Stinger Release 9.7.3 or later SHDSL with IMA Capability ... · PDF fileStinger® SHDSL LIM with IMA Capability Configuration Guide Software version 9.7.3 363-217-016R9.7.3 Issue 2

Stinger®

SHDSL LIM with IMA Capability

Configuration GuideSoftware version 9.7.3

363-217-016R9.7.3Issue 2

October 2005

Copyright © 2005 Lucent Technologies Inc. All rights reserved.

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Every effort was made to ensure that the information in this document was complete and accurate at the time of printing, but information is subject to change.

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Hereby, Lucent Technologies, declares that the equipment documented in this publication is in compliance with the essential requirements and other relevant provisions of the Radio and Telecommunications Technical Equipment (RTTE) Directive 1999/5/EC.

To view the official Declaration of Conformity certificate for this equipment, according to EN 45014, access the Lucent INS online documentation library at http://www.lucentdocs.com/ins.

Safety, compliance, and warranty Information

Before handling any Lucent Access Networks hardware product, read the Edge Access and Broadband Access Safety and Compliance Guide included in your product package. See that guide also to determine how products comply with the electromagnetic interference (EMI) and network compatibility requirements of your country. See the warranty card included in your product package for the limited warranty that Lucent Technologies provides for its products.

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Contents

About This Information Product

Purpose ........................................................................................................................................................ ix

Reason for reissue ....................................................................................................................................... ix

Intended audience ........................................................................................................................................ ix

Supported platforms .................................................................................................................................... ix

How to use this information product ........................................................................................................... ix

Safety information .........................................................................................................................................x

Related information .......................................................................................................................................x

Information product support ........................................................................................................................ xi

Technical support ........................................................................................................................................ xi

How to order ................................................................................................................................................ xi

How to comment ........................................................................................................................................ xii

1 About the Stinger SHDSL LIM with IMA capability

Overview ................................................................................................................................................... 1-1

Welcome to the SHDSL LIM with IMA capability .................................................................................. 1-2

Installing the LIM ...................................................................................................................................... 1-3

LED status lights ....................................................................................................................................... 1-4

Hardware specifications ............................................................................................................................ 1-5

ATM features ............................................................................................................................................. 1-7

IMA features ............................................................................................................................................. 1-9

Related configuration profiles ................................................................................................................. 1-12

2 Provisioning SHDSL Ports

Overview ................................................................................................................................................... 2-1

Introduction to UNI mode ......................................................................................................................... 2-2

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Contents

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Basic SHDSL interface configuration

Top-level contents of the SHDSL profile ................................................................................................. 2-4

Activating an SHDSL port for use ............................................................................................................ 2-5

Defining the call control procedure .......................................................................................................... 2-6

Link-specific line configuration

SHDSL line-config subprofile contents .................................................................................................... 2-8

Configuring a line to interoperate with the CPE device ......................................................................... 2-12

Bonding two adjacent ports for higher bandwidth .................................................................................. 2-13

Configuring a connection on an SHDSL port

Sample VCC to a DSL subscriber ........................................................................................................... 2-16

3 Provisioning IMA

Overview ................................................................................................................................................... 3-1

Introduction to IMA .................................................................................................................................. 3-2

IMA group requirements ........................................................................................................................... 3-4

Provisioning IMA groups

Contents of the IMAGROUP profile ........................................................................................................ 3-6

Creating an IMA group ............................................................................................................................. 3-9

Configuring IMA hardware options

Introduction to the IMAHW-CONFIG profile ........................................................................................ 3-14

Contents of the IMAHW-CONFIG profile ............................................................................................. 3-15

Configuring IMA links

IMA links in transmit and receive directions .......................................................................................... 3-18

Contents of the SHDSL ima-options subprofile ..................................................................................... 3-19

Configuring IMA link characteristics ..................................................................................................... 3-21

Configuring trunk-port CAC

Connection admission control (CAC) on trunk ports ............................................................................. 3-24

Configuring trunk port CAC ................................................................................................................... 3-26

Configuring virtual path switching

Introduction to VP switching on the SHDSL LIM with IMA capability ................................................ 3-30

Configuring VPCs in a subtending configuration ................................................................................... 3-32

4 Administrative Tools

Overview ................................................................................................................................................... 4-1

Contents

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Introduction to STAT profiles .................................................................................................................... 4-2

Displaying SHDSL status and statistics

Introduction to the SHDSL-STAT profile ................................................................................................. 4-4

Viewing line state and mode ..................................................................................................................... 4-5

Checking physical line status .................................................................................................................... 4-6

Viewing LIM sparing information ............................................................................................................ 4-8

Viewing the allocated VPI and VCI .......................................................................................................... 4-9

Viewing IMA link status ......................................................................................................................... 4-10

Viewing physical line statistics ............................................................................................................... 4-12

Viewing IMA link statistics ..................................................................................................................... 4-14

Displaying IMA group status and statistics

Viewing IMA group configuration and status information ..................................................................... 4-18

Viewing IMA group statistics ................................................................................................................. 4-22

Administrative commands

Displaying IMA interface information .................................................................................................... 4-24

Displaying IMA group information ........................................................................................................ 4-26

Using sealing current

What is sealing current? .......................................................................................................................... 4-28

How to use sealing current ...................................................................................................................... 4-29

Index

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Contents

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List of figures



1-1 Faceplate LEDs ............................................................................................................................ 1-4


2-1 SHDSL four-wire bonding diagram ............................................................................................. 2-2

2-2 Sample VCC to a DSL subscriber .............................................................................................. 2-16

3 Provisioning IMA

3-1 Components of a four-link IMA group ........................................................................................ 3-2

3-2 Inverse multiplexing over ATM (IMA) ........................................................................................ 3-3

3-3 Example of oversubscribing trunk bandwidth on an IMA group .............................................. 3-26


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List of figures

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Purpose

The purpose of this information product is to document configuration of the Stinger SHDSL LIM with IMA capability, including SHDSL line provisioning, port bonding, and IMA configuration.

Reason for reissue

This issue of this document (Issue 2, October 2005) supersedes Issue 1 (September 2005). This issue updates the document to remove incorrect information about configuring a SHDSL LIM port to recover the Stinger system clock. The use of a SHDSL LIM port to recover the Stinger system clock is not supported on the SHDSL LIM with IMA capability. (This restriction does not apply to other Stinger SHDSL LIMs.)

Intended audience

This document is addressed to network administrators implementing DSL aggregation and SHDSL-IMA trunking in a Stinger system.

Supported platforms

The SHDSL LIM with IMA capability can be used in the following Stinger platforms, and is compatible with all control module versions and trunk modules in those platforms.

• Stinger FS

• Stinger FS+

• Stinger LS

• Stinger LS+

• Stinger RT

• Stinger MS+

How to use this information product

Use this guide to install and configure a Stinger SHDSL LIM with IMA capability.

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Safety information

Before installing a Stinger unit, be sure to read the safety instructions in the Edge Access and Broadband Access Safety and Compliance Guide. For information specific to your unit, see the “Safety-Related Physical, Environmental, and Electrical Information” appendix in the Getting Started Guide for your Stinger unit.

Related information

The Stinger documentation set consists of the following manuals, which can be found at http://www.lucent.com/support.

Read me first:

• Edge Access and Broadband Access Safety and Compliance Guide. Contains important safety instructions and country-specific information that you must read before installing a Stinger unit.

• TAOS Command-Line Interface Guide. Introduces the TAOS command-line environment and shows you how to use the command-line interface effectively. This guide describes keyboard shortcuts and introduces commands, security levels, profile structure, and parameter types.

Installation and basic configuration:

• Getting Started Guide for your Stinger platform. Shows how to install your Stinger chassis and hardware. This guide also shows you how to use the command-line interface to configure and verify IP access and basic access security on the unit, and how to configure Stinger control module redundancy on units that support it.

• Module guides. For each Stinger line interface module (LIM), trunk module, or other type of module, an individual guide describes the module’s features and provides instructions for configuring the module and verifying its status.

Configuration:

• Stinger ATM Configuration Guide. Describes how to integrate the Stinger into the ATM and Digital Subscriber Line (DSL) access infrastructure. The guide explains how to configure PVCs, and shows how to use standard ATM features such as quality of service (QoS), connection admission control (CAC), and subtending.

• Stinger IP Control Module Configuration Guide. For Stinger systems with an IP control module, this guide describes how to integrate the system into the IP infrastructure.

• Stinger Private Network-to-Network Interface (PNNI) Supplement. For the optional PNNI software, this guide provides quick-start instructions for configuring PNNI and soft PVCs (SPVCs), and describes the related profiles and commands.


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• Stinger SNMP Management of the ATM Stack Supplement. Describes SNMP management of ATM ports, interfaces, and connections on a Stinger unit to provide guidelines for configuring and managing ATM circuits through any SNMP management utility.

RADIUS:

• TAOS RADIUS Guide and Reference. Describes how to set up a unit to use the Remote Authentication Dial-In User Service (RADIUS) server and contains a complete reference to RADIUS attributes.

Administration and troubleshooting:

• Stinger Administration Guide. Describes how to administer the Stinger unit and manage its operations. Each chapter focuses on a particular aspect of Stinger administration and operations. The chapters describe tools for system management, network management, and Simple Network Management Protocol (SNMP) management.

Reference:

• Stinger Reference. An alphabetic reference to Stinger profiles, parameters, and commands.

• TAOS Glossary. Defines terms used in documentation for Stinger units.

Information product support

Document support telephone numbers are:

• 1 888 727 3615 (for the continental United States)

• 630 713 5000 (for all countries).

Technical support

For technical support, contact your local customer support team. Reach them via the web at https://support.lucent.com/ or the telephone number listed under the Technical Assistance Center menu at http://www.lucent.com/contact/.

How to order

To order Lucent Technologies information products, use the following websites or the email, phone, and fax contacts linked from “Contact Us” on those sites:

Documentation: http://www.lucentdocs.com

Training: https://training.lucent.com/

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How to comment

To comment on this information product, use the Online Comment Form at http://www.lucent-info.com/comments/enus/ or send email to the Comments Hotline at [email protected].

Related documentsThe following industry documents provide background information about features described in this guide:

• RFC 1483, Multiprotocol Encapsulation over ATM Adaptation Layer 5.

• RFC 1700, Assigned Numbers

• RFC1723, RIP Version 2: Carrying Additional Information

• RFC 2236, Internet Group Management Protocol Version 2

• RFC 1112, Host Extensions for IP Multicasting

• RFC 2132, DHCP Options and BOOTP Vendor Extensions

• RFC 2131, Dynamic Host Configuration Protocol

• RFC 951, Bootstrap Protocol

• RFC 3046, DHCP Relay Agent Information Option

• IEEE 802.1Q-1998, IEEE Standard for Local and Metropolitan Area Networks: Virtual Bridged Local Area Networks

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Overview

Introduction

This chapter provides general information about the Stinger Single-Pair High-Speed Digital Subscriber Loop (SHDSL) Line Interface Module (LIM) with Inverse Multiplexing for ATM (IMA) capability.

Contents

This chapter covers the following topics:

Welcome to the SHDSL LIM with IMA capability 1-2

Installing the LIM 1-3

LED status lights 1-4

Hardware specifications 1-5

ATM features 1-7

IMA features 1-9

Related configuration profiles 1-12

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Welcome to the SHDSL LIM with IMA capabilityAbout the Stinger SHDSL LIM with IMA capability

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Welcome to the SHDSL LIM with IMA capability

Introduction

The SHDSL LIM with IMA capability has 48 single-pair SHDSL ports, which can be independently configured to provide approximately 2.3Mbps bandwidth per port, or bonded in adjacent pairs (four-wire bonding) to provide higher bandwidth access. The physical SHDSL ports are on a line protection module (LPM), which connects to the LIM via the chassis backplane.

With the required Lucent Technologies software license, the SHDSL LIM with IMA capability supports multi-pair operation using the ATM Forum IMA protocol.

Connection configuration methods

You can configure user connections in local profiles (via Telnet or SNMP access) or through a central RADIUS service.

SNMP statistics

The SHDSL LIM with IMA capability supports 15-minute, 24-hour, and total statistics for a rich set of performance parameters, accessible via the Simple Network Management Protocol (SNMP).

Installing the LIMAbout the Stinger SHDSL LIM with IMA capability

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Installing the LIM

Purpose

This procedure describes how to install a LIM in an unused LIM slot of a Stinger chassis. If you must replace an existing LIM instead, see the Stinger Getting Started Guide for the platform you are using.

Before you begin

If power to the unit is not turned off, an electrical energy hazard is present within the card cage. Remove all metallic objects from hands and wrist to prevent bridging of live contact points, and put on an antistatic wrist strap.

Installation procedure

To install the SHDSL LIM with IMA capability, follow these steps:

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1 Put on an antistatic wrist strap and plug it into an ESD grounding jack on the Stinger unit.

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2 Remove the blank slot cover from the LIM slot.

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3 Align the SHDSL LIM with the card guides and carefully slide the module into the unit.

WARNING

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When sliding the LIM into the slot, keep the LIM connector away from components on adjacent LIMs. Do not force the module.

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4 Once the card has engaged its bus connector, press firmly to be sure it is fully seated. If the slot has ejectors, depress both ejectors simultaneously.

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5 Using a number 2 Phillips screwdriver, secure the LIM by tightening the thumbscrews.

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LED status lightsAbout the Stinger SHDSL LIM with IMA capability

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LED status lights

The two status lights begin blinking upon startup or restart of the module, and then remain dark until the module passes its power-on self test (POST).

Figure 1-1 Faceplate LEDs

When the module passes the POST and becomes operational, the ACTIVE light illuminates. It is the only light that is on during normal operation.

LED Description

FAULT Illuminates orange to indicate that the LIM failed to pass POST.

ACTV Illuminates green to indicate that the LIM is fully operational and no errors have been detected, and remains illuminated during normal operation.

FAU

LT

AC

TV

ACTV LED

FAULT LED

Hardware specificationsAbout the Stinger SHDSL LIM with IMA capability

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Hardware specifications

Physical dimensions

Height: 15 inches (38.1cm)

Width: 1.06 inches (2.69cm)

Depth: 9 inches (22.8cm)

Weight

3.8 pounds (1.7kg)

Electrical safety compliance

GR-090-CORE, R14-7(737)

Maximum range

24,000 ft. with 24 AWG wire at 192kbps

12,000 ft. with 24 AWG wire at 2.312Mbps

Operating voltage range

-38Vdc(min) to -75Vdc (max)

Operating temperature

-40°F–149°F (-40°C–65°C)

Relative humidity

5% to 95%, limited to 0.024 lb water/lb dry air above 29°C (operating and storage) as specified in GR-57-CORE: R10-2[1466],R10-5[1469]

Operating altitude

0 to 13,123 feet (0 to 4000 meters) as specified in GR-57-CORE, R10-6[1470]

Heat dissipation

<=100 W total (120 W with Sealing Current enabled)

Maximum power requirement

80W

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Hardware specificationsAbout the Stinger SHDSL LIM with IMA capability

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Physical interfaces

48 SHDSL two-wire ports provided on LPM that connects through the chassis backplane

Faceplate LEDs

ACTV—green

FAULT—orange

See “LED status lights” (p. 1-4).

Standards compliance

ITU-T G.991.2:

• Two-wire in ATM or IMA mode

• Four-wire operation (two bonded pair) in UNI mode only

DSL Forum TR-060 (physical-layer and higher-layer)

European Telecommunications Standards Institute (ETSI) TS 101 524 v1.2.1

Sealing current

The module supports the use of sealing current as described in “Using sealing current” (p. 4-27).

EOC protocol compliance

Embedded Operations Channel (EOC) protocol compliance is defined within the ITU-T G.991.2 standard specification. The EOC protocol provides identification and statistical information about the SHDSL interface and its remote repeaters and associated customer premises equipment (CPE) and central office equipment nodes.

Platform support

The module is supported in Stinger FS, FS+, LS, LS+, MS+, and RT shelves, with any control module and trunk modules supported by a given software version.

Redundancy

LIM sparing and LIM port sparing is supported in UNI mode.

In IMA mode, LIM sparing is supported.

ATM featuresAbout the Stinger SHDSL LIM with IMA capability

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ATM features

Introduction

The SHDSL LIM with IMA capability supports the ATM feature set described in this section.With the exception of certain limitations that apply when a port is operating in UNI mode rather than IMA mode, this feature set applies to both the UNI and the IMA modes of operation.

ATM specifications

Compliance with the following ATM Forum specifications:

• ATM Forum User-Network Interface (UNI) Specification Version 3.1, (AF-UNI-0010.002), and backward compatible with the previous version, AF-UNI-0010.001

• ATM Forum Traffic Management Specification Version 4.0, (AF-TM-0056.000)

Types of ATM connections

The module provides support for the following ATM permanent connections:

• LIM-LIM VP

• LIM-Trunk VP

• LIM-LIM VC

• LIM-Trunk VC

• LIM-CM terminating ATM connections with IP control module

F4/F5 OAM

The module provides support for all OAM features supported on previous Stinger SHDSL modules.

Traffic policing

The module provides support for policing upstream traffic on a per-connection basis (in both ATM and IMA mode).

Traffic management

The module provides support for all ATM traffic management features supported on previous Stinger SHDSL modules (in both ATM and IMA mode).

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ATM featuresAbout the Stinger SHDSL LIM with IMA capability

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VPI-VCI values

VPI-VCI values can be selected from the full range of available values, without limitations, for VP and VC cross-connections. This is in accordance with UNI standards. The following ranges apply:

• VPI: 0-255

• VCI: 32-65535

Subtending applications

Each port is configurable as the CO or CPE end of the connection. For bonded ports in UNI mode, both ports of an odd-even pair must be the same type, for example ports {1,2}, ports {3,4}, and so forth.

Limitation on active connections per port in UNI mode

The maximum number of simultaneously active connections on any UNI port is 8. This maximum applies to any combination of ATM connection types on both two-wire and bonded four-wire UNI ports. It does not apply to ports in IMA mode.

IMA featuresAbout the Stinger SHDSL LIM with IMA capability

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IMA features

Introduction

When the IMA software license is enabled, the following IMA features are supported in addition to the features described in “ATM features” (p. 1-7).

IMA specifications

The SHDSL LIM with IMA capability complies with the ATM Forum Inverse Multiplexing for ATM (IMA) Specification Version 1.1, (AF-PHY-0086.001), and is backward compatible with the previous version, AF-PHY-0086.000.

Supported optional requirements from the IMA specification v1.1:

O-1 Distribution of ICP cells within an IMA frame in a uniform fashion.

O-2 and O-3 IMA frame sizes of 32, 64, 128 (default) and 256 supported. IMA frame size is configurable by the user.

O-4 Configurable IMA ID

O-9 and O-10 Independent Transmit Clock (ITC)

O-11 Indication of incoming stuff event in the 4th, 3rd and 2nd ICP cells preceding the stuff event

O-12 Rely on at least one ICP cell with correct CRC-10 in order to process the incoming stuff event indication code

O-13 Configurable limit for maximum tolerable differential delay among the constituent lines in an IMA group

O-14 Report cause for link being unusable (inhibited, failed, fault or mis-connected)

O-15 Configurable value of minimum number of links that should be in the group so that the IMA group is still operational. PTx (transmit direction) is configurable and PRx (receive direction) is automatically set equal to PTx. When more than PTx or PRx links enter an alarm state, the IMA group goes into alarm.

O-16 Configurable values of alpha (a), beta (b), and gamma (g) per IMA interface group (each interface group has one set of these three parameters). These parameters are used to control the IMA Frame Sync procedure.

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IMA capacities

Maximum number of two-wire ports in an IMA group: 32

Maximum number of IMA groups per LIM: 24

Maximum active connections per port in IMA mode

Maximum number of simultaneously active VP/VC connections:

• At least 1924 per IMA group

Number of active VP connections

The module provides support for multiple simultaneously active VP connections per port:

• At least four per UNI port (two-wire or four-wire) or per IMA group

• At least 48 per LIM

Support for multiple active VP connections allows operators to use a simpler provisioning scenario for subtended shelves. For example, one VP connection can be configured for each ATM service category.

Differential delay

The module supports up to 30 milliseconds of differential delay on the individual two-wire ports of an IMA group.

O-17 Transition from any state to hunt state when cells are no longer being received from the physical layer.

O-18 Maintain IMA frame synchronization when one of the two SICP cells has a HEC/CRC error.

O-20 through O-25 IMA performance monitoring parameters

O-26 and O-27 IMA performance parameters accumulated over 15-minute and 24-hour intervals and are accessible via SNMP. Total statistics are also accessible via SNMP.

O-28 and O-29 Report implementation-specific Tx-fault or Rx-fault conditions declared at the near-end.

O-30 In the case of LIF, LODS, RFI-IMA and Fault failure alarms, this product allows configuration of other values for default persistence checking time.

O-32 and O-33 Support for IMA MIB and SNMP-based management


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Dynamic port configuration

SHDSL ports can be added to an IMA group or deleted from an IMA group dynamically, without disrupting existing traffic.

Test pattern

The SHDSL LIM with IMA capability can receive and respond to a test pattern procedure for detecting misconnected links within an IMA group. With the current software version, the SHDSL LIM with IMA capability does not generate a test pattern.

Subtending applications

When using an IMA group for subtending, all links within the group must be configured with the same setting as either the CO or CPE end of a subtending connection. Use the CO setting for all links within a group on the subtending shelf. Use the CPE setting for all links within a group on the subtended shelf.

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Related configuration profilesAbout the Stinger SHDSL LIM with IMA capability

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Related configuration profiles

This section introduces the profiles needed for configuring the SHDSL LIM with IMA capability. Additional information about each profile and the parameters and subprofiles with it can be found in the Stinger Reference. For details about slot and module management, see the Stinger Adminstration Guide.

Profile Description

SHDSL Created by the system for each SHDSL port when a module is installed. This profile is used to provision the line and to configure IMA traffic characteristics. See Chapter 2, “Provisioning SHDSL Ports” and Chapter 3, “Provisioning IMA”.

CONNECTION Created by the operator for ATM links bound to the SHDSL port or IMA group. Sample profiles are provided in Chapter 2, “Provisioning SHDSL Ports” and Chapter 3, “Provisioning IMA”. For background information, see the Stinger ATM Configuration Guide.

IMAGROUP Created by the operator for defining an IMA group. All group-related IMA parameters are stored in this profile. See Chapter 3, “Provisioning IMA”.

IMAHW-CONFIG Created by the system for 24 possible IMA groups. This profile is used to fine-tune IMA processing options. See Chapter 3, “Provisioning IMA”

HIGH-SPEED-SLOT-STATIC-CONFIG

Created by the system for each IMA group as it becomes active. This profile is used to configure connection admission control (CAC) for trunk interfaces. See Chapter 3, “Provisioning IMA”.

LIM-SPARING-CONFIG Created by the system when it detects the presence of PSM or CLT modules. You manage LIM sparing by configuring this profile on a spare SHDSL LIM. For details about this profile, see the Stinger Line Protection Module (LPM) Guide.

XDSL-SLOT-CONFIG Created once by the system for all LIM slots and (optionally) by the operator for individual LIM slots. This profile is used to turn on sealing current. See Chapter 4, “Administrative Tools”.

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Overview

Purpose

This chapter explains how to

• Enable an SHDSL port and fine-tune the line configuration

• Bind two adjacent SHDSL ports for a higher bandwidth link

Contents


Introduction to UNI mode 2-2

Basic SHDSL interface configuration 2-3

Link-specific line configuration 2-7

Configuring a connection on an SHDSL port 2-15

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Introduction to UNI modeProvisioning SHDSL Ports

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Introduction to UNI mode

What is UNI mode?

When the IMA protocol is not being used, SHDSL ports operate in User-Network Interface (UNI) mode.

Port capacity

The maximum capacity of an SHDSL port in UNI mode is approximately 2.3Mbps. If two adjacent ports are bonded, the capacity of the bonded port is approximately 4.6Mbps.

Two-wire SHDSL ports

The SHDSL LIM with IMA capability supports 48 two-wire SHDSL ports. Two-wire SHDSL operation is specified in ITU-T G.991.2.

Bonding of two adjacent SHDSL ports

Four-wire operation (two bonded pair) is a form of inverse multiplexing in which the capacities of two adjacent two-wire ports are combined to provide one logical link that provides approximately twice the throughput. Bonding is specified in ITU-T G.991.2.

Figure 2-1 shows that bonding occurs at a sublayer within the SHDSL-specific functionality of the transmission path. In these sublayers, the inverse multiplexing functionality does not depend on the higher layers being ATM or any other format.

Figure 2-1 SHDSL four-wire bonding diagram

SHDSL-specific sublayers

Bonding function at TPS-TC sublayer

PMS-TC layer

PMD layer

PMS-TC layer

PMD layer

End-user traffic on one ATM connection

Pair 1 Pair 2

OverviewProvisioning SHDSL Ports

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Basic SHDSL interface configuration

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Overview

Purpose

This section describes how to enable an SHDSL port and specify the call-control procedure that determines at which point the ports become active.

Contents

This section covers the following topics:

• Top-level contents of the SHDSL profile

• Activating an SHDSL port for use

• Defining the call control procedure

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Top-level contents of the SHDSL profileProvisioning SHDSL Ports

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Top-level contents of the SHDSL profile

Overview of SHDSL profile contents

Following are the SHDSL profile contents at the top level. All parameters are shown with default values:

[in SHDSL/{ shelf-1 slot-3 46 }]name = 1:3:46physical-address* = { shelf-1 slot-3 46 }enabled = nosparing-mode = inactiveignore-lineup = system-definedline-config = { 0 146 15 static { any-shelf any-+

What the settings represent

Parameter Setting

name Name of the interface. The default value is the interface address in shelf:slot:item format (for example, 1:2:1), but you can assign a text string of up to 16 characters.

physical-address Physical address of the interface.

enabled Enables or disables the interface. Set this parameter to yes to enable the line for use.

sparing-mode Enables or disables port redundancy. LIM port redundancy is not currently supported.

ignore-lineup Call control procedure to use for this port. By default, the system monitors the physical-line states of its interfaces and allows connections to be established only when the line state is fully up. Call-control procedures enable the system to establish connections even when the line state is not fully up, so DSL subscribers can establish and maintain connections in the operating states that exist before the modems are fully trained, as well as in the standard port-up state.

See “Enabling call control for a specific line” (p. 2-6).

line-config A subprofile for configuring the line to enable a specific link to work properly. See “SHDSL line-config subprofile contents” (p. 2-8).

Activating an SHDSL port for useProvisioning SHDSL Ports

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Activating an SHDSL port for use

To activate an SHDSL port, set the enabled parameter to yes . For example:

read shdsl { 1 3 1}set enabled = yeswrite -f

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Defining the call control procedureProvisioning SHDSL Ports

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Defining the call control procedure

Enabling call control system wide

For ease of configuration, you can enable call-control procedures system wide by using the following commands:

read systemset ignore-lineup = yeswrite -f

Because the DSL lines have a default system-defined setting for ignore-lineup , setting this parameter in the SYSTEM profile affects all lines that do not explicitly change the default call-control.

Enabling call control for a specific line

You can override the SYSTEM profile setting by setting the ignore-lineup value to yes or no in the SHDSL profile. For example, the following commands specify that the first SHDSL line in slot 3 will not allow connections unless the line is fully up:

read shdsl { 1 3 1}set ignore-lineup = nowrite -f


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Link-specific line configuration

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Overview

Purpose

This section describes additional configuration settings that enable the port to interoperate properly with specific CPE devices, or to become part of an IMA group. It also shows how to bond two 2-wire ports for 4-wire operations.

Contents


• SHDSL line-config subprofile contents

• Configuring a line to interoperate with the CPE device

• Bonding two adjacent ports for higher bandwidth

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SHDSL line-config subprofile contentsProvisioning SHDSL Ports

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SHDSL line-config subprofile contents

When to use the line-config subprofile

In UNI mode, additional line configuration might be required for a specific link to work properly, depending on the characteristics of the link. At a minimum, the line-mode parameter must be set to UNI (the default value) for an SHDSL port to operate in UNI mode.

For required settings when configuring a line as a constituent link in an IMA group, see “IMA group requirements” (p. 3-4).

Overview of the SHDSL line-config subprofile

Following are the parameters of the SHDSL line-config subprofile, shown with their default values:

[in SHDSL/{ shelf-1 slot-3 46 }:line-config]trunk-group = 0nailed-group = 146vp-switching-vpi = 15activation = staticcall-route-info = { any-shelf any-slot 0 }unit-type = coentr-enabled = noclock-source = not-eligibleclock-priority = middle-priorityloop-back = nonemargin = 2dbsnext-margin = disablerate-mode = automin-rate = 72000max-rate = 2312000gshdsl-standard-network-type = north-american-annex-aannexb-anfp-enabled = nogshdsl-psd-type = symmetricmaster-binding-port = noima-option-config = { { 0 3 fast auto 10 0 } { 3 fast 10 100 a+ line-mode = uni


Parameter Setting

trunk-group Not currently used. Use the default value (zero).


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nailed-group Nailed-group number representing the dedicated bandwidth of the SHDSL port.

For a line operating in UNI mode, use the unique default number assigned by the system.

For a line bundled into an IMA group, all lines in the same group must be configured with the same nailed-group number.

vp-switching-vpi See “Configuring virtual path switching” (p. 3-29).

activation Not currently used. Leave the default value.

call-route-info Not currently used. Leave the default value (the zero address).

unit-type Type of unit. Specify coe (the default) for central office equipment (COE). Remote equipment must be the opposite setting, customer premises equipment (CPE).

ntr-enabled Enables or disables network time reference (NTR). When this parameter is set to yes and the line’s unit-type parameter is set to coe , a remote CPE can recover clock through the SHDSL port.

clock-source The use of a SHDSL LIM port to recover the Stinger system clock is not supported on the SHDSL LIM with IMA capability. (This restriction does not apply to other Stinger SHDSL LIMs.)

clock-priority

loop-back Enables loopback mode for testing the lines. The default value (none) enables the line to pass data normally. For details about loopback testing, see the Stinger Adminstration Guide.

margin Noise margin value (in decibels). Specifying a value less than 6 causes modems to train at higher rates, but on noisy loops, also causes them to become unstable and retrain. The default value is 2 decibels. If this parameter is set to a value greater than 6 decibels, the modems train at lower rates, but are more stable and are less likely to retrain on noisy loops.

snext-margin Specifies an Snext margin range that allows compensation for self-noise generated by adjacent SHDSL lines in the same bundle. A value other than disable will reduces the maximum rate that the loop trains at.

Parameter Setting

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rate-mode Specifies whether the line rate is fixed or automatic. The default auto causes the modem to attempt to train at a rate within the range specified by the min-rate and max-rate parameters.

With the fixed value, the modem attempts to train only at the rate specified by the max-rate parameter.

Each line bundled into an IMA group must be configured with fixed bandwidth.

Each port to be bound with an adjacent port in UNI mode must be configured with fixed bandwidth.

min-rate Minimum rate in kilobits per second at which a modem trains when the rate-mode parameter is set to auto . By default, the minimum rate is set to 72000.

Each line bundled into an IMA group must be configured with the min-rate value equal to the max-rate value, and the values must be the same for each line in the group.

max-rate Maximum rate at which the modem trains. For central office equipment (COE), you need only configure the maximum rate value. The modem uses a G.994.1 handshake protocol to communicate the maximum rate value to the customer premises equipment (CPE). By default, the maximum rate is set to 2312000.

Each line bundled into an IMA group must be configured with the min-rate value equal to the max-rate value, and the values must be the same for each line in the group.

gshdsl-standard-network-type

The G.991.2 standard network type for the network that is connected to the SHDSL port. This setting specifies the modem output characteristics for either a North American (north-american-annex-a) or European (european-annex-b) network. If unit-type is set to cpe , you can use the auto-detect setting to allow the system to select the network type automatically.

annexb-anfp-enabled

Used for internal test purposes. Leave at default value of no .

gshdsl-psd-type The LIM outputs a symmetric power spectral density (PSD), based on the G.shdsl standard G.991.2. With the default symmetric setting, the modem outputs a symmetric power spectral density for all rates. This is the only setting currently supported.

Parameter Setting


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master-binding-port

Enables or disables the port for bonding to the next adjacent port. Bonding two SHDSL ports together aggregates their bandwidths. For details, see “Bonding two adjacent ports for higher bandwidth” (p. 2-13).

Bonding is enabled by configuring an odd numbered port as master. The next even numbered port is bonded to the master port.

The rate-mode parameter must be set to fixed . The enabled parameter must be set to yes for both ports. The master port’s max-rate and rate-mode parameter values are used for both ports.

ima-option-config A subprofile for configuring IMA transmit and receive links. See “SHDSL line-config subprofile contents” (p. 2-8).

line-modeSpecifies the required operational mode of the SHDSL link. The default mode of operation is UNI mode.

Each line bundled into an IMA group must be configured with a line mode set to IMA. This configures the link in the correct framing mode and enables it to join the IMA group.

Parameter Setting

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Configuring a line to interoperate with the CPEdevice

Provisioning SHDSL Ports

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Configuring a line to interoperate with the CPE device

Overview

If the subscriber’s CPE device supports automatic adaptation to the highest bandwidth rate available, you can often use the default settings in the SHDSL line-config subprofile. However, if the CPE supports only fixed rate, you must modify the default values and assign a single bandwidth rate for the device. This section provides a sample fixed-rate configuration.

Sample configuration using a fixed rate

To activate service on the two-wire port { 1 14 25 } to interoperate with a CPE that supports fixed-rate modem training at 2.312Mbps, follow these steps:

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1 Enable the SHDSL port for service.

read shdsl { 1 14 25 }set enabled = yes

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2 Set the rate mode to fixed.

set line-config rate-mode = fixed

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3 Set the minimum rate equal to the maximum rate, and write the profile.

set line-config min-rate = 2312000write -f

Bonding two adjacent ports for higher bandwidthProvisioning SHDSL Ports

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Bonding two adjacent ports for higher bandwidth

Overview of port bonding

Port bonding allows the combining of two adjacent ports to double the available bandwidth. The port pairs on both the COE and CPE sides must support port bonding. Stinger-to-Stinger connections can be supported by setting one pair of ports to a unit-type of coe and the other to a unit-type of cpe .

Example of port bonding

In this example we connect Stinger #1 to Stinger #2 using port bonding to support greater bandwidth. We bind ports 5 and 6 on the SHDSL LIM in slot 3 on Stinger #1 and ports 1 and 2 on the SHDSL LIM in slot 2 for Stinger #2. Note that the slave ports automatically assume the settings from the master ports:

For Stinger #1:

read shdsl {1 3 5} set enabled = yes set line-config rate-mode = fixedset line-config master-binding-port = yesset line-config unit-type = coewrite -f

read shdsl {1 3 6}set enabled = yes write -f

For Stinger #2:

read shdsl {1 2 1} set enabled = yes set line-config rate-mode = fixedset line-config master-binding-port = yesset line-config unit-type = cpewrite -f

read shdsl {1 2 2}set enabled = yes write -f

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Configuring a connection on an SHDSL port

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Overview

Purpose

This section provides a step-by-step example of how to configure a working VCC connection to a CPE device.

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Sample VCC to a DSL subscriberProvisioning SHDSL Ports

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Sample VCC to a DSL subscriber

Purpose

This section describes how to configure a virtual channel connection (VCC) for a DSL subscriber, using a single two-wire SHDSL port in UNI mode.

Supported VPI-VCI range

To configure a VCC, you must assign a VPI and VCI to both the ingress (DSL) and egress (trunk) sides of the connection. The VPI-VCI ranges for ports on the SHDSL LIM with IMA capability are as follows:

• VPI: 0-255

• VCI: 32-65535

VPI 0 is always reserved for VCCs. A range of VPIs is allocated for VPCs, and cannot be used for VCCs. By default, VPI 15 and higher are allocated for VPCs, so you must use a VPI less than 15 when configuring VCCs. For more information, see “Reserving VPIs for VPCs” (p. 3-30) and the Stinger ATM Configuration Guide.

Typical LIM slot setting not used

The following parameter, which is typically used for provisioning a VPI-VCI range for a LIM slot, does not apply to the SHDSL LIM with IMA capability:

[in SLOT-STATIC-CONFIG/{ shelf-1 slot-11 0 }]vpi-vci-range = vpi-0-15-vci-32-127

Description of the sample network

Figure 2-2 shows an ATM circuit between SHDSL port 5 in slot 4, and ATM trunk port 2 in slot 17. For details about configuring ATM circuits, see the Stinger ATM Configuration Guide.

Figure 2-2 Sample VCC to a DSL subscriber

Steps

VPI 0, VCI 36VPI 0, VCI 38ATM

Stinger DSLAM

SHDSLOC3


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To configure an ATM circuit from an SHDSL port to an OC3 trunk port, perform the following steps:

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1 Enable the SHDSL and trunk ports.

read shdsl { 1 4 5 }set enabled = yeswrite -f

read oc3-atm { 1 17 2 }set enabled = yeswrite -f

Result: The ports are available for use.

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2 Determine the nailed-group numbers assigned to the SHDSL and trunk ports. For example:

which -n {1 4 5}Nailed group corresponding to port { shelf-1 slot-4 5 } is 155which -n {1 17 2}Nailed group corresponding to port { shelf-1 trunk-module-1 2

} is 802

Result: You now have the nailed-group numbers required to define the transmission path of the ATM circuit.

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3 Create a CONNECTION profile for the DSL user using the nailed-group numbers of the two ports. The default VPI 0 is used in combination with the VCI numbers shown in Figure 2-2.

new connection atm-connset active = yesset encapsulation-protocol = atm-circuitset ip-options ip-routing-enabled = noset atm-options nailed-group = 155set atm-options vci = 36set atm-connect-options nailed-group = 802set atm-connect-options vci = 38write -f

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Following is a comparable circuit definition in a RADIUS profile:

permconn-ST-2 Password = "ascend" Service-Type = Outbound, Framed-Protocol = ATM-CIR, User-Name = "atm-conn", Ascend-ATM-Group = 155, Ascend-Route-IP = Route-IP-No, Ascend-ATM-Vpi = 0, Ascend-ATM-Vci = 36, Ascend-ATM-Connect-Vpi = 0, Ascend-ATM-Connect-Vci = 38, Ascend-ATM-Connect-Group = 802,

Result: The DSL subscriber has connectivity to the ATM core network.

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3 Provisioning IMA

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Overview

Purpose

This chapter explains how to:

• Bundle multiple two-wire SHDSL lines into an IMA group

• Configure IMA processor options for each line in the group

• Configure IMA receive and transmit characteristics for each line in the group

• Configure oversubscription of the IMA group bandwidth

• Use IMA bandwidth in a subtending application

Contents


Introduction to IMA 3-2

IMA group requirements 3-4

Provisioning IMA groups 3-5

Configuring IMA hardware options 3-13

Configuring IMA links 3-17

Configuring trunk-port CAC 3-23

Configuring virtual path switching 3-29

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Introduction to IMAProvisioning IMA

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Introduction to IMA

What is an IMA group?

An IMA group is a group of bundled links that provide the aggregate payload throughput of the bundled links. IMA group bandwidth is approximately equivalent to the SHDSL line rate (2.3Mbps) times the number of links in the group.

An IMA group with four links

Figure 3-1 shows how an IMA group bundles the capacity of four links. This IMA group can provide up to about 9.2 Mbps (4 times 2.3 Mbps) of throughput.

Figure 3-1 Components of a four-link IMA group

Inverse multiplexing operations within an IMA group

Inverse multiplexing is used to break up a high-speed cell stream at the transmit side and send it across multiple constituent links, and then to reconstruct the transmission back into the original order of ATM cells at the receive end. Figure 3-2 shows a block diagram of how IMA processing occurs between the transmit and receive sides of a link.

SHDSL-specific sublayers

PMS-TC layer

PMD layer

End-user traffic on one ATM connection

Pair 1

TPS-TC layer

PMS-TC layer

PMD layer

TPS-TC layer

PMS-TC layer

PMD layer

TPS-TC layer

PMS-TC layer

PMD layer

TPS-TC layer

IMA function

Pair 2 Pair 3 Pair 4

Introduction to IMAProvisioning IMA

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Figure 3-2 Inverse multiplexing over ATM (IMA)

For the inverse multiplexing and demultiplexing of an ATM cell stream to occur properly, both ends of the IMA link must agree on IMA configuration values. See “Creating an IMA group” (p. 3-9).

Inverse Multiplexer Inverse Multiplexer

Variable delay IMA circuits

Cells distributed to SHDSL lines Cells reassembled in proper order

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IMA group requirementsProvisioning IMA

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IMA group requirements

IMAGROUP profile requirement

You create an IMA group by creating and configuring an IMAGROUP profile. The nailed-group assignment in the IMAGROUP profile must match the nailed-group assignment in all of the constituent line configurations.

Requirements for each constituent line

Each line bundled into an IMA group must meet the following requirements:

• All lines must be configured with fixed-rate bandwidth.

• All lines must be configured with an equal maximum and minimum rate.

• All lines must be configured with the same line speed.

• All lines must be configured with a line mode set to IMA.

• All lines must be configured with the same nailed-group number.

• Only two-wire lines can be bundled into an IMA group.

There is no restriction on which lines can participate in an IMA group. For example, port 1 and port 48 can be in the same IMA group.

For details about the line configuration parameters, see “SHDSL line-config subprofile contents” (p. 2-8).

OverviewProvisioning IMA

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Provisioning IMA groups

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Overview

Purpose

This section defines the IMA group configuration settings and provides a step-by-step example of how to configure an IMA group.

Contents


• Contents of the IMAGROUP profile

• Creating an IMA group

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Contents of the IMAGROUP profile

Purpose

This section describes the possible settings in the IMAGROUP profile.

Overview of the IMAGROUP profile

Following are all related IMA group parameters, shown with default settings:

[in IMAGROUP/""]name* = ""active = nonailed-group = 0group-symmetry-mode = symmetric-operationversion = v1-1do-version-fallback = noignore-lineup = system-definedlasr = yesne-tx-clk-mode = ctctx-min-num-links = 1rx-min-num-links = 1ima-id = 0frame-length = 128diff-delay-max = 25check-far-end-ima-id = noexpected-far-end-ima-id = 0far-end-check-frame-length = noexpected-far-end-frame-length = 128atm-if-delay = 0tpp-test-link = 0tpp-test-pattern = -1tpp-state = disabledvp-switching-vpi = 15pref-physical-address = { any-shelf any-slot 0 }


Parameter Setting

name A text name for the profile, up to 15 characters.

active Enables or disables the profile. See “Log messages reporting duplicate nailed groups” (p. 3-11).

nailed-group Nailed-group number assigned to the IMA group and all of its constituent SHDSL links.


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group-symmetry-mode

Currently, only the default setting is supported.

version ATM Forum IMA specification version (1.0 or 1.1).

do-version-fallback

Enables or disables fallback to version 1.0 of the IMA specification if the far end does not support 1.1. Version fallback is not supported on the SHDSL LIM with IMA capability.

ignore-lineup Specifies whether the Stinger system ignores line status when determining whether calls are established.

lasr Enables or disables link addition and slow recovery (LASR) procedures. LASR procedures are always enabled on the SHDSL LIM with IMA capability.

ne-tx-clk-mode Specifies the IMA group clocking mode (common or independent).

tx-min-num-links Specifies the minimum number of active transmission links required for the IMA interface to remain in operational state (from 1 to 8).

rx-min-num-links Specifies the minimum number of active receive links required for the IMA interface to remain in operational state (from 1 to 8).

ima-id Specifies the IMA ID (0 through 255) for the group.

frame-length Specifies the number of cells in an IMA frame (frame length to be used by the IMA group.

diff-delay-max Specifies the permissible range of differential delay for IMA groups, expressed in milliseconds (msecs).

For the SHDSL LIM with IMA capability, the range is from 0 to 25 msecs.

check-far-end-ima-id

Enables or disables verification of the far-end IMA ID during group startup. Verification of far-end IMA ID is not supported on the SHDSL LIM with IMA capability.

expected-far-end-ima-id

This parameter is not used on the SHDSL LIM with IMA capability.

far-end-check-frame-length

Enables or disables verification of the far-end frame length during group start up. Verification of far-end frame length is not supported on the SHDSL LIM with IMA capability.

Parameter Setting

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expected-far-end-frame-length

This parameter is not used on the SHDSL LIM with IMA capability.

atm-if-delay This parameter is not used on the SHDSL LIM with IMA capability.

tpp-test-link This parameter is not used on the SHDSL LIM with IMA capability.

tpp-test-pattern This parameter is not used on the SHDSL LIM with IMA capability.

tpp-state This parameter is not used on the SHDSL LIM with IMA capability.

vp-switching-vpi A VPI value that represents the minimum VPI to be used for VP switching. All VPI values equal to or greater than this value are allocated for VPCs. See “Configuring virtual path switching” (p. 3-29).

pref-physical-address

Specifies a preferred physical address for the IMA group.

With the default wildcard setting ({ any-shelf any-slot 0 }), when you create the IMAGROUP profile, the system software assigns the shelf and slot number of the SHDSL LIM with IMA capability and an item number from 50 to 73, for a maximum of 24 possible IMA groups.

See “How an IMAHW-CONFIG profile is associated with an IMA group” (p. 3-14).

Parameter Setting

Creating an IMA groupProvisioning IMA

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Creating an IMA group

Purpose

This section shows you how to create a three-link IMA group and use it for trunk egress.

Before you begin

Before you begin creating an IMA group, verify that the required Lucent Technologies software license is enabled by checking the BASE profile. For example:

get base ima-enabled[in BASE:ima-enabled]ima-enabled = yes

If the license is not enabled in your system, the related functionality and profiles are not accessible. For information about obtaining and enabling Lucent Technologies software licenses, contact your Lucent sales representative.

Creating and using an IMA group

In the following sample configuration, SHDSL interfaces 1 through 3 in slot 11 are bundled in an IMA group named “ima1.” The traffic stream from a DSL subscriber on port 9 of slot 1 is switched to the IMA bandwidth for trunk egress.

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1 Configure the first SHDSL line to be bundled into the IMA group.

This interface uses its default nailed-group number, which is 501.

read shdsl { 1 11 1 }set enabled = yesset line-config rate-mode = fixedset line-config min-rate = 2312000set line-config max-rate = 2312000set line-config line-mode = imawrite -f

Result: The SHDSL interface in the group has been configured with a fixed-rate of the maximum line speed, and a line mode set to IMA. The nailed-group assigned by default to the first SHDSL interface in the group must be used by all subsequent SHDSL interfaces in the group, and the group configuration.

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2 Enable the second and third SHDSL interface and assign the same nailed-group number as the first interface in the group.

read shdsl { 1 11 2 }

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set enabled = yesset line-config nailed-group = 501set line-config rate-mode = fixedset line-config min-rate = 2312000set line-config max-rate = 2312000set line-config line-mode = imawrite -f

read shdsl { 1 11 3 }set enabled = yesset line-config nailed-group = 501set line-config rate-mode = fixedset line-config min-rate = 2312000set line-config max-rate = 2312000set line-config line-mode = imawrite -f

Result: The subsequent links have been configured with the same line speed as the first link, a fixed-rate mode, and a line mode set to IMA. By assigning the same nailed-group number as the first line in the group, these lines are bundled into a group. See “Log messages reporting duplicate nailed groups” (p. 3-11) for related information.

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3 Create the IMAGROUP profile that will represent the aggregate bandwidth of the three links, and assign the same nailed-group number.

new imagroup ima1set active = yesset nailed = 501write -f

Result: The IMA group has been enabled. The constituent links can now come up.

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4 Create a CONNECTION profile for a DSL subscriber on port 9 in slot 1 (nailed-group 9) that uses the IMA group for outbound bandwidth.

new connection ima-connset active = yesset atm-options nailed = 9set atm-options vpi = 0set atm-options vci = 40set atm-connect-options = 501set atm-connect-options vpi = 0set atm-connect-options vci = 42write -f


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Result: The outgoing traffic on this connection uses the IMA bandwidth.

........................................................................................................................................................E N D O F S T E P S

For more details about configuring ATM circuits, see the Stinger ATM Configuration Guide.

Log messages reporting duplicate nailed groups

A system without IMA prevents configuration of duplicate nailed-group numbers. With IMA, each link in an IMA group must use the same nailed-group number.

If you configure multiple SHDSL profiles with the same nailed-group number before configuring the IMAGROUP profile, the system logs an error message and refuses to activate the line when it detects the first instance of a duplicate nailed-group. However, when you save the IMAGROUP profile with the same nailed-group, the system activates the constituent SHDSL links.

Similarly, if you disable or delete an IMAGROUP profile, when the system detects a duplicate nailed-group it logs error messages and brings down all but one of the constituent links. To reactivate those interfaces in UNI mode, you must reconfigure the SHDSL profile with a unique nailed-group assignment.

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Configuring IMA hardware options

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Overview

Purpose

This section describes the IMAHW-CONFIG profile, and how it is associated with each IMA group configured on the SHDSL LIM with IMA capability.

Contents


• Introduction to the IMAHW-CONFIG profile

• Contents of the IMAHW-CONFIG profile

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Introduction to the IMAHW-CONFIG profile

About the IMAHW-CONFIG profile

IMAHW-CONFIG profiles are used to configure IMA frame synchronization and cell delineation options for an IMA group, as defined in ITU-T Recommendation I.432 and ANSI T1.646.

The system creates 24 IMAHW-CONFIG profiles.The profiles are indexed using a physical address { shelf slot item }.

• The shelf and slot numbers correspond to the shelf and slot number of the SHDSL LIM with IMA capability.

• The item number is from 50 to 73, one for all possible IMA groups on the 48-port SHDSL LIM with IMA capability.

How an IMAHW-CONFIG profile is associated with an IMA group

When you create an IMAGROUP profile, the system software updates the IMAGROUP profile’s pref-physical-address setting with the index of an IMAHW-CONFIG profile. Normally, the first IMA group on a slot would be assigned the IMAHW-CONFIG profile with the index {shelf-1 slot-N 50}, the second IMA group would be assigned the IMAHW-CONFIG profile with the index {shelf-1 slot-N 51}, and so forth. However, it is possible to explicitly associate an IMAHW-CONFIG profile with an IMAGROUP profile by explicitly configuring the IMAGROUP pref-physical-address parameter.

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Contents of the IMAHW-CONFIG profile

Purpose

This section describes the possible settings of the IMAHW-CONFIG profiles.

Overview of the IMAHW-CONFIG profile

Following are the profile contents, shown with default settings for the first IMA group on a LIM in slot 12:

[in IMAHW-CONFIG/{ shelf-1 slot-12 50 }]name = 1:12:50physical-address* = { shelf-1 slot-12 50 }alpha-ima-value = 2beta-ima-value = 2gamma-ima-value = 1alpha-cell-delin-value = 7delta-cell-delin-value = 6

What the IMAHW-CONFIG settings represent

Parameter Setting

name A text name for the profile, up to 15 characters. By default, the system assigns the physical address of the port in the format shelf:slot:item.

physical-address A physical address on the LIM slot ({ shelf slot item }). The item numbers can be from 50 to 73 for the 24 possible IMA groups on the SHDSL LIM with IMA capability. See “How an IMAHW-CONFIG profile is associated with an IMA group” (p. 3-14).

alpha-ima-value Alpha value (1 or 2) to specify the number of consecutive invalid IMA Control Protocol (ICP) cells to be detected before changing to IMA HUNT state from the SYNC state.

beta-ima-value Number of consecutive invalid ICP cells (from 1 to 5) to be detected before moving to the IMA HUNT state from the SYNC state.

gamma-ima-value Gamma value (from 1 to 5) to specify the number of consecutive valid ICP cells to be detected before moving to IMA SYNC from the PRESYNC state.

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alpha-cell-delin-value

Not applicable to this module.

delta-cell-delin-value


Parameter Setting


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Configuring IMA links

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Overview

Purpose

This section describes how to configure the transmit and receive links of the constituent lines of an IMA group.

Contents


• IMA links in transmit and receive directions

• Contents of the SHDSL ima-options subprofile

• Configuring IMA link characteristics

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IMA links in transmit and receive directionsProvisioning IMA

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IMA links in transmit and receive directions

Purpose

This section introduces terms and definitions related to IMA link configuration.

Link IDs

An IMA link corresponds to a unidirectional logical channel carried over one direction of a clear channel facility. An IMA link is identified by the value of the link ID (LID) field contained in the IMA control protocol (ICP) cells carried over that IMA link.

IMA transmit and receive links

Both the near end and far end of an IMA link operate independently in the transmit and received directions, to allow for the smooth introduction of a link as well as the graceful removal of a link if error conditions occur. The system maintains a link state machine (LSM) for each direction of the link, to ensure that it has up-to-date link information at all times.

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Contents of the SHDSL ima-options subprofile

Purpose

This section describes the possible settings of the SHDSL line configuration IMA options.

Overview of the SHDSL ima-options subprofile

The ima-options subprofile contains the txlink-config and rxlink-config subprofiles for configuring settings that can affect the LSM for the transmitting and receiving side, respectively.

Following are the subprofile contents, shown with default values:

in SHDSL/{ shelf-1 slot-11 1 }:line-config:ima-option-config:txlink-config]

ne-tx-lid = 0add-link-cond-time = 3link-recovery-type = fastfault-clearing-type = autofault-clearing-time = 10priority = 0

[in SHDSL/{ shelf-1 slot-11 1 }:line-config:ima-option-config:rxlink-config]

add-link-cond-time = 3link-recovery-type = fastrec-link-cond-time = 10rx-lid-learning-time = 100fault-clearing-type = autofault-clearing-time = 10in-defect-int-time = 2500out-defect-int-time = 10000defect-ratio = 10


The SHDSL LIM with IMA capability currently supports only a subset of the options in the txlink-config and rxlink-config subprofiles, as described in the following table.

Parameter Setting

ne-tx-lid Near end transmit LID for the link (0-31). The default setting (0) is used for configuring automatic LID selection, so LID 0 cannot be configured manually.

add-link-cond-time Not applicable to this module.

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link-recovery-type Not applicable to this module.

fault-clearing-time


priority Not applicable to this module.

rec-link-cond-time Not applicable to this module.

rx-lid-learning-time


in-defect-int-time Number of milliseconds a defect can persist before the LSM for the receive link enters a FAILED state. The default value of 2500 corresponds to 2.5 seconds.

out-defect-int-time

Number of milliseconds before which, if no defect persists, the LSM for the receive link leaves the FAILED state. The default value of 10000 corresponds to 10 seconds.

defect-ratio Not applicable to this module.

Parameter Setting

Configuring IMA link characteristicsProvisioning IMA

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Configuring IMA link characteristics

Purpose

This section shows how to configure characteristics of constituent links of an IMA group.

Before you begin

Both ends of the IMA transmission path must agree about the link characteristics. Before configuring the IMA options for the SHDSL links, you must determine the corresponding settings at the far end.

Sample configuration

The following steps configure an IMA group that contains two SHDSL lines and uses a transmit link ID of 12. This setting must be compatible with the far end of the IMA transmission path.

........................................................................................................................................................................................................................

1 Configure the first SHDSL line to be bundled into the IMA group, and set the ne-tx-lid parameter to 12.

read shdsl { 1 12 12 }set enabled = yesset line-config rate-mode = fixedset line-config min-rate = 2312000set line-config max-rate = 2312000set line-config line-mode = imaset line-config ima-option-config txlink-config ne-tx-lid = 12write -f

Result: The SHDSL interface in the group has been configured for IMA, using the default nailed group for this line (562).

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2 Configure the second SHDSL interface to be bundled into the IMA group, and set the ne-tx-lid parameter to 12.

read shdsl { 1 11 2 }set enabled = yesset line-config nailed-group = 562set line-config rate-mode = fixedset line-config min-rate = 2312000set line-config max-rate = 2312000set line-config line-mode = imaset line-config ima-option-config txlink-config ne-tx-lid = 12write -f

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Result: The second link has been configured for IMA, with the same nailed-group number and the same transmit link ID setting as the first line in the group.

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3 Create the IMAGROUP profile that will represent the aggregate bandwidth of the three links, and assign the same nailed-group number.

new imagroup ima-562set active = yesset nailed = 562write -f

Result: The IMA group has been enabled. The constituent links can now come up.s


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Configuring trunk-port CAC

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Overview

Purpose

This section describes how trunk-port connection admission control (CAC) works and how to configure it for the SHDSL LIM with IMA capability.

Contents


• Connection admission control (CAC) on trunk ports

• Configuring trunk port CAC

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Connection admission control (CAC) on trunkports

Provisioning IMA

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Connection admission control (CAC) on trunk ports

Purpose

This section describes the settings used to oversubscribe bandwidth on the SHDSL LIM with IMA capability.

Using the LIM for trunk egress

Because IMA provides increased bandwidth, the SHDSL LIM with IMA capability can be used for applications such as trunking between a subtending and a subtended Stinger unit. For that reason, trunk port CAC is supported for IMA groups. When an IMA group is created, the system creates a HIGH-SPEED-SLOT-STATIC-CONFIG profile for the group.

What is CAC?

CAC is the set of actions taken by the network during the call set-up phase to determine whether a connection request can be accepted or should be rejected based on availability of bandwidth.

To take advantage of the statistical nature of connections, you can configure an oversubscription factor that enables the system to accept a greater number of guaranteed connections than it currently has sufficient guaranteed bandwidth for.

Overview of the HIGH-SPEED-SLOT-STATIC-CONFIG trunk-cac-config subprofile

Following are the relevant CAC parameters, shown with default values, for a sample IMA group containing two SHDSL ports in slot 11:

[in HIGH-SPEED-SLOT-STATIC-CONFIG/{ shelf-1 slot-11 49 }:trunk-cac-config[1]]

enable = yesport-num = ""line-rate = 4600over-subscription = 10


Parameter Setting

enable Enable/disable CAC on the port. CAC is enabled by default.

port-num Read-only address of the IMA interface within the unit.

Connection admission control (CAC) on trunkports

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line-rate Read-only value that specifies the usable payload bandwidth of the IMA interface in kilobits per second. For an IMA group, the value reflects the aggregate payload bandwidth of the constituent links.

over-subscription Integer value from 0 to 10,240 used to provision the amount of oversubscription of the trunk port’s payload bandwidth. The system calculates oversubscription internally by multiplying this value by the maximum payload rate and dividing the product by 10. For example, with a setting of 20, the system oversubscribes up to twice the IMA interface’s payload rate. If this parameter is set to a value from 1 through 9, the port’s bandwidth is undersubscribed. For example, with a setting of 7, the system undersubscribes down to 70% of the payload rate. A value of zero disables CAC.

Parameter Setting

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Configuring trunk port CAC

Purpose

This section shows you how to configure bandwidth oversubscription for an IMA group.

Before you begin

Before you begin, determine the required oversubscription of the IMA group.

Description of the sample network

In the network shown in Figure 3-3, the DSL connections require 6000Kbps of trunk-side bandwidth. The trunk egress port is a two-link IMA group with a maximum data rate of 4600Kbps. To allow 6000Kpbs of connections on a maximum capacity of 4600Kbps, oversubscription is required.

Figure 3-3 Example of oversubscribing trunk bandwidth on an IMA group

Steps

To configure the IMA group and enable oversubscription of its bandwidth, follow these steps:

........................................................................................................................................................................................................................

1 Configure the IMA group for two SHDSL ports in slot 11.

read shdsl { 1 11 1 }set line-config nailed-group = 501set enabled = yeswrite -fread shdsl { 1 11 2 }set line-config nailed-group = 501set enabled = yeswrite -f

ATM

Stinger

Subscribers

SHDSL-IMA

4.6Mbps3Mbps

3Mbps


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new imagroup ima-9set active = yesset nailed-group = 501write -f

Result: The IMA group is available for use.

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2 Configure oversubscription on the IMA group’s bandwidth:

read high-speed-slot-static-config { 1 11 49 }set trunk-cac-config 1 over-subscription = 20write -f

Result: With an over-subscription value of 20, the IMA interface can accept upstream traffic from the DSL LIMs until the total of required bandwidth for all connections is twice the IMA group’s payload bandwidth. However, no single connection can be provisioned for guaranteed bandwidth greater than the actual IMA payload bandwidth of 4600Kbps.

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Configuring virtual path switching

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Overview

Purpose

This section explains how to use VP switching using IMA groups and provides a step-by-step example of using VPCs with IMA bandwidth in a subtending environment.

Contents


• Introduction to VP switching on the SHDSL LIM with IMA capability

• Configuring VPCs in a subtending configuration

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Introduction to VP switching on the SHDSL LIMwith IMA capability

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Introduction to VP switching on the SHDSL LIM with IMA

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capability

VPC capacity

The SHDSL LIM with IMA capability supports up to four VPCs per IMA group and up to 48 VPCs per LIM. The range of valid VPI numbers for VPCs is 1-255.

VPI-VCI range parameter not used

The following parameter, which is typically used for provisioning a VPI-VCI range for a LIM slot, does not apply to the SHDSL LIM with IMA capability:

[in SLOT-STATIC-CONFIG/{ shelf-1 slot-11 0 }]vpi-vci-range = vpi-0-15-vci-32-127

Reserving VPIs for VPCs

The following parameter, shown with its default setting, determines the range of VPIs allocated for VP switching:

[in SHDSL/{ shelf-1 slot-11 1 }:line-config]vp-switching-vpi = 15

For the SHDSL LIM with IMA capability, this setting specifies the minimum VPI value to be used for virtual path switching. With this default value, all VPIs greater than or equal to 15 are allocated for virtual path switching.

Configuring VPIs for VP switching

To specify a range of VPIs to be used for VP switching for an IMA group, you must configure both the SHDSL profiles and the IMAGROUP profile. For example, to allow four VPCs in an IMA group that contains three links, follow these steps:

........................................................................................................................................................................................................................

1 Specify a VP-switching VPI of 252 in the SHDSL profile for each of the bundled lines.

read shdsl { 1 11 1 }set line-config vp-switching-vpi = 252write -f



Introduction to VP switching on the SHDSL LIMwith IMA capability

Provisioning IMA

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Result: VPIs 252, 253, 254, and 255 are reserved for VPCs.

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2 Specify the same VPI in the IMAGROUP profile.

read imagroup ima1set vp-switching-vpi = 252write -f

Result: The IMA group can now support up to four VPCs.

........................................................................................................................................................E N D O F S T E P S

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Configuring VPCs in a subtending configuration

Purpose

This section describes how to configure virtual path connections to carry all traffic of a specific ATM service category, such as constant bit rate (CBR) and unspecified bit rate (UBR), from a subtended Stinger system to the central subtending unit.

Before you begin

In addition to virtual path switching, this example makes use of configurable outgoing queues, a subtending configuration, and ATM service categories. For information about these topics, see the Stinger ATM Configuration Guide.

Description of sample network

Figure 3-1 shows two subtended Stinger systems, each with a four-link IMA group, and a subtending Stinger system, which has two four-link IMA groups.

Table 3-1 Subtending on IMA group bandwidth

Steps

To configure the subtending configuration in Figure 3-1, follow these steps:

........................................................................................................................................................................................................................

1 Configure a four-link IMA group as the subtended trunk port on each subtended Stinger system. For example:

read shdsl { 1 10 1 }set line-config nailed-group = 451set line-config vp-switching-vpi = 13set enabled = yeswrite -f

VPI 53ATM

Subtending Stinger

VPI 13

VPI 13

Subscribers

OC3

SHDSL-IMA

Subtended Stingers


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read shdsl { 1 10 4 }set line-config nailed-group = 451set enabled = yesset line-config vp-switching-vpi = 13write -f

new imagroup subtended-egressset active = yesset nailed = 451set line-config vp-switching-vpi = 13write -f

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2 Create user connections for subscribers serviced by the subtended Stinger systems. The connections use VPI 13 for egress on the IMA group (nailed group 451). For example:

new connection user-1set active = yesset atm-options vci = 35set atm-options vpi = 8set atm-options nailed-group = 155set atm-connect-options vci = 32set atm-connect-options vpi = 13set atm-connect-options nailed-group = 451write -f

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3 Configure the subtending Stinger system with two four-link IMA groups for receiving traffic streams from the subtended units. For example:


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new imagroup subtending-trunk-1set active = yesset vp-switching-vpi = 13set nailed = 551write -f






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new imagroup subtending-trunk-2set active = yesset vp-switching-vpi = 13set nailed = 555write -f

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4 Configure the subtending Stinger system with a VPC between the IMA group (which receives subtended upstream traffic) and an egress OC3 trunk port. For example:

new connection subtend-switchthruset active = yesset atm-options vpi = 13set atm-options nailed-group = 551set atm-options vp-switching = yesset atm-connect-options vpi = 53set atm-connect-options nailed-group = 852set atm-options vp-switching = yeswrite -f

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Overview

Introduction

This chapter explains how to:

• Retrieve status information and statistics for SHDSL lines with or without IMA capability

• Retrieve status information and statistics for active IMA groups

• Enable sealing current on the LIM slot

For additional information about LIM management, see the Stinger Adminstration Guide.

Contents


Displaying SHDSL status and statistics 4-4

Displaying IMA group status and statistics 4-17

Administrative commands 4-23

Using sealing current 4-27

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Introduction to STAT profiles

When an SHDSL LIM with IMA capability becomes operational, the system creates an SHDSL-STAT profile for each interface. When an IMA group becomes operational, the system creates an IMA-GROUP-STAT profile.

These profiles are volatile, read-only profiles that provide alarm and performance monitoring statistics. The statistical information is viewable both in the command-line interface and by external SNMP management utilities.

OverviewAdministrative Tools

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Displaying SHDSL status and statistics

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Overview

Purpose

This section explains how to use the SHDSL-STAT profile settings to obtain status information and statistics about the SHDSL LIM with IMA capability operations.

Contents


• Introduction to the SHDSL-STAT profile

• Viewing line state and mode

• Checking physical line status

• Viewing LIM sparing information

• Viewing the allocated VPI and VCI

• Viewing IMA link status

• Viewing physical line statistics

• Viewing IMA link statistics

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Introduction to the SHDSL-STAT profile

Overview of the SHDSL-STAT profile

Following are the profile contents, shown with representative values for an operational SHDSL interface in slot 3:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }]physical-address* = { shelf-1 slot-3 1 }line-state = activespare-physical-address = { any-shelf any-slot 0 }sparing-state = sparing-nonesparing-change-reason = unknownsparing-change-time = 0sparing-change-counter = 0vpi-vci-range = vpi-0-15-vci-32-127vp-switching-vpi = 15physical-status = { 0 coe default out-of-service+physical-statistic = { { 0 0 0 } no 0 0 passed 0+line-mode = uniima-link-status = { active active active active +ima-link-statistic = { 0 0 0 1 0 0 0 1 0 0 1 0 1+

Viewing line state and modeAdministrative Tools

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Viewing line state and mode

Overview of line state and mode parameters

The following settings provide information about the SHDSL line and its current state:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }]physical-address* = { shelf-1 slot-3 1 }line-state = activeline-mode = uni

What the settings indicate

Parameter Indicates

physical-address The location of the interface in the system (shelf, slot, port).

line-state The overall state of the line.

does-not-exist—Link is not detected.

disabled—Line is disabled.

loss-of-sync—Red-alarm state, + or –.

yellow-alarm—Yellow-alarm state.

ais-receive—Receiving keep-alive signal.

loss-of-cell-delineation—ATM receiver is in loss of cell delineation state.

active—The line is active and operational.

line-mode The mode in which the line is operating, UNI (a single ATM interface) or IMA (a member of an IMA group)

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Checking physical line status

Overview of physical-status parameters

The physical-status subprofile provides information about the SHDSL line and its current state:

[in SHDSL-STAT/{ shelf-1 slot-3 10 }:physical-status]if-group-index = 0unit-type = coeinterface-type = defaultdev-line-state = startup-handshakeoperational-rate = 0firmware-ver = "R2.0 "hardware-ver = 0network-type = annex-a


Parameter Indicates

if-group-index SNMP interface group index of the line.

unit-type Operating mode specified by the unit-type parameter in the SHDSL profile.

interface-type Type of interface. Currently, only the default setting it supported.

dev-line-state Current state of the interface, which can be one of the following:

port-up—Connected to CPE and data can be transferred.

test—Line is in test mode.

start-up-handshake—Startup handshake is occurring.

start-up-training—Startup training is occurring.

start-up-download—Startup download is occurring.

idle—Line is idle.

down—Line is not currently operational.

out-of-service—Line is out of service.

unknown—Line status is unknown.

analog-loopback—Line is in analog loopback mode.

digital-loopback—Line is in digital loopback mode.

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operational-rate A numeric field that displays a value from 0 to 4624000 to indicate the data rate for this symmetric interface.

firmware-ver Version number of the module firmware.

hardware-ver Hardware version of the SHDSL modem.

network-type This lists current Standard Network type, annex-a , annex-b , or annex-b-anfp .

Parameter Indicates

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Viewing LIM sparing information

Overview of LIM sparing parameters

The following settings provide information about the LIM sparing:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }]spare-physical-address = { any-shelf any-slot 0 }sparing-state = sparing-nonesparing-change-reason = unknownsparing-change-time = 0sparing-change-counter = 0


Parameter Indicates

spare-physical-address

Shelf, slot, and port number of the spare (redundant) LIM.

sparing-state State of the redundancy function. If redundancy is not enabled, sparing-none is the value. If sparing is enabled and the LIM slot is a primary LIM, the value can be primary-active or primary-inactive . If sparing is enabled and the LIM slot is the secondary (spare) LIM, the value can be secondary-active or secondary-inactive .

sparing-change-reason

How redundancy is activated. Valid values are inactive , manual and automatic .

sparing-change-time

The time that the last change in redundancy state occurred.

sparing-change-counter

Each redundancy change, for example, primary to secondary, secondary to primary, which increments the counter. The counter resets when the Stinger starts or restarts.

Viewing the allocated VPI and VCIAdministrative Tools

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Viewing the allocated VPI and VCI

Overview of VPI-VCI parameters

The following settings show which VPIs are allocated for VPCs:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }]vpi-vci-range = vpi-0-15-vci-32-127vp-switching-vpi = 15


Parameter Indicates

vpi-vci-range Ignore this value for the SHDSL LIM with IMA capability.


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Viewing IMA link statusAdministrative Tools

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Viewing IMA link status

Overview of IMA link status parameters

The following settings show the current status of the IMA link:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }:ima-link-status]near-end-tx-link-state = activenear-end-rx-link-state = activefar-end-tx-link-state = activefar-end-rx-link-state = activenear-end-rx-failure-status = no-failurefar-end-rx-failure-status = no-failuretx-lid = 0rx-lid = 0relative-delay = 0rx-test-pattern = 255rx-testproc-status = disabledvalid-intervals = 9invalid-intervals = 9


Parameter Indicates

near-end-tx-link-state

The current state of the near-end transmit link.

near-end-rx-link-state

The current state of the near-end receive link.

far-end-tx-link-state

The current state of the far-end transmit link (as reported via ICP cells).

far-end-rx-link-state

The current state of the far-end receive link (as reported via ICP cells).

near-end-rx-failure-status

The current link failure status of the near-end receive link.

far-end-rx-failure-status

The current link failure status of the far-end receive link (as reported via ICP cells).

tx-lid The outgoing link ID (LID) used currently on the link by the local end. This value has meaning only if the link belongs to an IMA group.

Viewing IMA link statusAdministrative Tools

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rx-lid The incoming LID used currently on the link by the remote end as reported via ICP cells. This value has meaning only if the link belongs to an IMA group.

relative-delay The latest measured delay on this link relative to the link, in the same IMA group, with the least delay.

rx-test-pattern During the IMA test pattern procedure, this setting identifies the received test pattern, which may then be compared to the transmitted test pattern.

rx-testproc-status This setting indicates the status of the IMA test pattern procedure. A value of disabled means the test is not running. A value of operating means the test is running and no error has been found on this interface. A value of linkFail means an error has been detected on this link during the test.

valid-intervals The number of previous 15-minute intervals for which valid data was collected.

invalid-intervals The number of 15-minute intervals for which no valid data is available.

Parameter Indicates

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Viewing physical line statisticsAdministrative Tools

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Viewing physical line statistics

Overview of line statistics parameters

The physical-statistic subprofile provides statistics about the SHDSL line operations:

[in SHDSL-STAT/{ shelf-1 slot-2 10 }:physical-statistic]line-up-timer = { 0 0 3 }rx-signal-present = yesline-quality = 36up-dwn-cntr = 3self-test = passedtransmit-power = 10framer-sync-status = in-synccode-violations = 17 errored-second = 2 severely-errored-second = 1 losw-second = 1 unavailable-second = 0 loop-attenuation = 10snr-margin = 40stur-loop-attenuation = 2stur-snr = 40


Parameter Indicates

line-up-timer How long the line has been up (days, hours, and minutes in {dd hh mm} format).

rx-signal-present Whether a receiving signal is present (yes or no).

line-quality Line quality in decibels. A value of 25dB or better is required for reliable data transfer.

up-down-cntr Number of times the link has transitioned from an up state to a down state since the module was last reset.

self-test Outcome of modem chipset self-test.

transmit-power Current transmission power that the transceiver is using, reported in dBm.

Viewing physical line statisticsAdministrative Tools

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framer-sync-status State of the SHDSL framer. Provides troubleshooting information and can assist in determining loss of signal (LOS). This parameter reports one of the following values:

in-sync—Framer is in sync. The SHDSL framers are successfully transmitting SHDSL frames.

out-of-sync—SHDSL framer is out of sync and is not trying to gain sync.

code-violations Number of SHDSL cyclic redundancy check (CRC) anomalies occurring during the accumulation period.

errored-second Number of 1-second intervals during which one or more CRC anomalies are declared and/or one or more loss of synchronous word (LOSW) defects are declared.

severely-errored-second

Number of 1-second intervals during which at least 50 CRC anomalies are declared or one or more LOSW defects are declared.

losw-second Number of 1-second intervals during which one or more SHDSL LOSW defects are declared.

unavailable-second Number of 1-second intervals for which the SHDSL line is unavailable. The SHDSL line becomes unavailable at the onset of 10 contiguous severely errored seconds (SES)-Ls. Once unavailable, the SHDSL line becomes available at the onset of 10 contiguous seconds with no SES-Ls.

loop-attenuation Current loop attenuation in decibels.

snr-margin A numeric field that displays a value of -127 to 128 to indicate the signal-to-noise ratio margin on the line, in decibels.

stur-loop- attenuation

The current signal reduction in the loop, in decibels. The stur-loop-attenuation parameter value is received by the central office equipment (COE) from the customer premises equipment (CPE), and thus characterizes how the loop attenuation looks from the CPE’s perspective.

stur-snr Signal-to-noise ratio on the line (in decibels). For an SHDSL interface, a reading of 24dB or higher is required for reliable data transfer. The stur-snr parameter value is received by reported message from the customer premises equipment (CPE) as a direct request from the central office equipment (COE), and thus is the CPE’s snr reading.

Parameter Indicates

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Viewing IMA link statisticsAdministrative Tools

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Viewing IMA link statistics

Overview of IMA link statistics parameters

The following settings show statistics about the IMA link operations:

[in SHDSL-STAT/{ shelf-1 slot-3 1 }:ima-link-statistic]ima-violations-counter = 0oif-anomalies-counter = 0near-end-sev-errored-secs-counter = 0far-end-sev-errored-secs-counter = 1near-end-unavail-secs-counter = 0far-end-unavail-secs-counter = 0near-end-tx-unusable-secs-counter = 0near-end-rx-unusable-secs-counter = 1far-end-tx-unusable-secs-counter = 0far-end-rx-unusable-secs-counter = 0near-end-tx-num-failures-counter = 1near-end-rx-num-failures-counter = 0far-end-tx-num-failures-counter = 1far-end-rx-num-failures-counter = 1tx-stuffs-counter = 11207rx-stuffs-counter = 11205elapsed-seconds = 9


Parameter Indicates

ima-violations-counter

The number of errored, invalid or missing ICP cells, except during SES-IMA or UAS-IMA conditions.

oif-anomalies-counter

The number of OIF anomalies, except during SES-IMA or UAS-IMA conditions, at the near-end.

near-end-sev-errored-secs-counter

The number of one-second intervals containing >= 30% of the ICP cells counted as IV-IMAs, or one or more link defects (e.g., LOS, OOF/LOF, AIS, or LCD), LIF defects, or LODS defects, except during UAS-IMA condition.

far-end-sev-errored-secs-counter

The number of one-second intervals containing one or more RDI-IMA defects, except during UAS-IMA-FE condition.


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near-end-unavail-secs-counter

The number of unavailable seconds at the near-end. Unavailability begins at the onset of 10 contiguous SES-IMA and ends at the onset of 10 contiguous seconds with no SES-IMA.

far-end-unavail-secs-counter

The number of unavailable seconds at the far-end. Unavailability begins at the onset of 10 contiguous SES-IMA-FE and ends at the onset of 10 contiguous seconds with no SES-IMA-FE.

near-end-tx-unusable-secs-counter

The number of seconds with Tx Unusable indications from the near-end Tx LSM.

near-end-rx-unusable-secs-counter

The number of seconds with Rx Unusable indications from the near-end Rx LSM.

far-end-tx-unusable-secs-counter

The number of seconds with Tx Unusable indications from the far-end Tx LSM.

far-end-rx-unusable-secs-counter

The number of seconds with Rx Unusable indications from the far-end Rx LSM.

near-end-tx-num-failures-counter

The number of times a near-end transmit failure alarm condition has been entered on this link (i.e., some form of implementation-specific transmit fault).

near-end-rx-num-failures-counter

The number of times a near-end receive failure alarm condition has been entered on this link (i.e., LIF, LODS, RFI-IMA, Mis-Connected or some form of implementation-specific receive fault).

far-end-tx-num-failures-counter

The number of times a far-end transmit failure alarm condition has been entered on this link (i.e., Tx-Unusable-FE).

far-end-rx-num-failures-counter

The number of times a far-end receive failure alarm condition has been entered on this link (i.e., Rx-Unusable-FE).

tx-stuffs-counter Number of stuff events inserted in the transmit direction.

rx-stuffs-counter Number of stuff events inserted in the receive direction.

elapsed-seconds Number of seconds that have elapsed since the beginning of the current measurement period.

Parameter Indicates

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Displaying IMA group status and statistics

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Overview

Purpose

This section shows how to use the IMA-GROUP-STAT profile settings to obtain status information and statistics about a particular IMA group.

Contents


• Viewing IMA group configuration and status information

• Viewing IMA group statistics

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Viewing IMA group configuration and statusinformation

Administrative Tools

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Viewing IMA group configuration and status information

Overview of IMA-GROUP-STAT profile

Each IMAGROUP-STAT profile contains configuration and status information specific to one group. Following are the IMA-GROUP-STAT profile contents, shown with representative values for an active IMA group named ima-15-2:

[in IMA-GROUP-STAT/ima-15-2]name* = ima-15-2physical-address = { shelf-1 slot-15 9 }near-end-ima-group-state = operationalfar-end-ima-group-state = operationalfailure-status = no-failurefar-end-txclock-mode = ctctx-timing-ref-link = 2rx-timing-ref-link = 3rx-ima-id = 0rx-frame-length = 128least-delay-link = 3diff-delay-max-obs = 0running-secs = 5646tx-avail-cellrate = 7184rx-avail-cellrate = 7184tx-num-config-links = 2rx-num-config-links = 2tx-num-active-links = 2rx-num-active-links = 2tx-oam-label-value = 3rx-oam-label-value = 3last-change-time = 45tpp-test-link = 0tpp-test-pattern = 255tpp-test-status = disabledvalid-intervals = 6invalid-intervals = 90vpi-vci-range = vpi-0-15-vci-32-127vp-switching-vpi = 15ima-group-statistic = { 0 0 0 }nailed-group = 702utopia-address = 2



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Parameter Indicates

name Name of the IMA group.

physical-address Physical address of the IMA group.

near-end-ima-group-state

Current state of the near-end IMA group state machine.

far-end-ima-group-state

Current state of the far-end IMA group state machine, as reported.

failure-status Current failure status of the IMA group (the reason why the group traffic state machine is in the down state).

far-end-txclock-mode

Transmit clocking mode used by the far-end IMA group.

ctc—Common transmit clock: Transmit clock of the links within the IMA group are derived from same clock source.

itc—Independent transmit clock: Transmit clock of the links within the IMA group are derived from their respective receive clocks.

tx-timing-ref-link Index of the transmit timing reference link (0 to 24) to be used by the near-end for IMA data cell clock recovery. The value of 0 (zero) is used if no link has been configured in the IMA group, or if the transmit timing reference link has not yet been selected.

rx-timing-ref-link Index of the receive timing reference link (0 to 24) to be used by the near end for IMA data cell clock recovery from the physical layer. The system uses the recovered clock as a reference when it delivers cells to the higher layer, which is the ATM layer.

The value of 0 (zero) is used if no link has been configured in the IMA group, or if the receive timing reference link has not yet been detected.

rx-ima-id IMA ID currently in use by the near-end IMA function ((0 to 255).

rx-frame-length IMA frame length received from the remote IMA function: 32, 64, 128, or 256 cells in length.

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least-delay-link Index of the link (0 to 24) configured in the IMA group which has the smallest link propagation delay. The value of 0 (zero) is used if no link has been configured in the IMA group, or if the link with the smallest link propagation delay has not yet been determined.

diff-delay-max-obs Latest maximum differential delay observed (in milliseconds) between the links having the least and most link propagation delay, among the receive links that are currently configured in the IMA group.

running-secs Number of seconds this IMA group has been in the operational state.

tx-avail-cellrate Current cell rate (truncated value in cells per second) provided by this IMA group in the transmit direction, considering all the transmit links in the active state.

rx-avail-cellrate Current cell rate (truncated value in cells per second) provided by this IMA group in the receive direction, considering all the receive links in the active state.

tx-num-config-links

Number of links (0 to 24) configured to transmit in this IMA group. This parameter overwrites the value of the imaGroupNumRxActLinks attribute when the IMA group is configured in group symmetry mode.

rx-num-config-links

Number of links (0 to 24) configured to receive in this IMA group.

tx-num-active-links

Number of links (0 to 24) configured to transmit and currently active in this IMA group.

rx-num-active-links

Number of links (0 to 24) configured to receive and currently active in this IMA group.

tx-oam-label-value IMA OAM label value (1 to 255) transmitted by the near end IMA unit.

rx-oam-label-value IMA OAM label value (0 to 255) transmitted by the far end IMA unit. A value of 0 indicates that the system has not received an OAM label yet.

last-change-time The number of seconds or milliseconds since the IMA group last changed state.

tpp-test-link SNMP interface (-1 through 24) to be used as the test link in the test pattern procedure.

Parameter Indicates



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tpp-test-pattern Number that specifies the test pattern transmitted in the IMA control protocol (ICP) cell (octet 17) on the link during the IMA test pattern procedure.

tpp-test-status Current state of the test pattern procedure.

disabled—Test pattern procedure is currently disabled on this link.

operating—Test pattern procedure is currently operating on this link.

link-fail—Test pattern procedure has failed on this link.

valid-intervals Number of previous 15-minute intervals for which valid data was collected.

Valid range for this read-only parameter is from 0 (zero) through 96. The value is 96 unless the IMA link was added to the IMA group within the last 24 hours, in which case the value is the number of complete 15-minute intervals since the link was added to an IMA group.

invalid-intervals Number of 15-minute intervals for which no valid data is available.

Valid range for this read-only parameter is from 0 (zero) through 96.

vpi-vci-range Ignore this value for the SHDSL LIM with IMA capability.


ima-group-statistic

Subprofile containing IMA group statistics.

nailed-group Nailed-group number assigned to the IMA group and its constituent links.

utopia-address Ignore this value for the SHDSL LIM with IMA capability.

Parameter Indicates

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Viewing IMA group statisticsAdministrative Tools

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Viewing IMA group statistics

Overview of IMA group statistics parameters

The ima-group-statistics subprofile displays error statistics collected for 15-minute intervals. Following are the subprofile contents:

[in IMA-GROUP-STAT/ima-15-2:ima-group-statistic]unavailable-secs = 0near-end-num-failures = 0far-end-num-failures = 0


Parameter Indicates

unavailable-secs Number of one-second intervals within the current 15-minute interval in which the IMA group traffic state machine was down.

near-end-num-failures

Number of times a near-end group failure such as config-aborted or insufficient-links has been reported within the current 15-minute interval.

far-end-num-failures

Number of times a far-end group failure such as config-aborted-FE, blocked-FE, or insufficient-links-FE has been reported within the current 15-minute interval.


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363-217-016R9.7.3Issue 2, October 2005

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Administrative commands

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Overview

Purpose

This section describes commands for displaying a focused status information. For complete details about these commands, see the Stinger Reference.

Contents


• Displaying IMA interface information

• Displaying IMA group information

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Displaying IMA interface informationAdministrative Tools

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Displaying IMA interface information

The imalines command displays the status of all lines, or those that are in use, free, or disabled, on any IMA modules in the system. For example:

imalines -a

All IMA lines: (dvOp dvUpSt dvRq sAdm lMode Nailg)Line { 1 3 1 } (Up Assign UP UP IMA 00101)Line { 1 3 2 } (Up Assign UP UP IMA 00101)Line { 1 3 3 } (Up Assign UP UP IMA 00101)Line { 1 3 4 } (Up Assign UP UP IMA 00101)Line { 1 3 5 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 6 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 7 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 8 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 9 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 10 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 11 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 12 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 13 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 14 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 15 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 16 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 17 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 18 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 19 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 20 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 21 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 22 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 23 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 24 } (Down Idle DOWN DOWN IMA 00101)Line { 1 3 25 } (Up Assign UP UP IMA 00125)Line { 1 3 26 } (Up Assign UP UP IMA 00125)Line { 1 3 27 } (Up Assign UP UP IMA 00125)Line { 1 3 28 } (Up Assign UP UP IMA 00125)Line { 1 3 29 } (Up Assign UP UP IMA 00125)Line { 1 3 30 } (Up Assign UP UP IMA 00125)Line { 1 3 31 } (Up Assign UP UP IMA 00125)Line { 1 3 32 } (Up Assign UP UP IMA 00125)Line { 1 3 33 } (Up Assign UP UP IMA 00125)Line { 1 3 34 } (Up Assign UP UP IMA 00125)Line { 1 3 35 } (Up Assign UP UP IMA 00125)Line { 1 3 36 } (Up Assign UP UP IMA 00125)Line { 1 3 37 } (Up Assign UP UP IMA 00125)Line { 1 3 38 } (Up Assign UP UP IMA 00125)

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Line { 1 3 39 } (Up Assign UP UP IMA 00125)Line { 1 3 40 } (Up Assign UP UP IMA 00125)Line { 1 3 41 } (Up Assign UP UP IMA 00125)Line { 1 3 42 } (Up Assign UP UP IMA 00125)Line { 1 3 43 } (Up Assign UP UP IMA 00125)Line { 1 3 44 } (Up Assign UP UP IMA 00125)Line { 1 3 45 } (Up Assign UP UP IMA 00125)Line { 1 3 46 } (Up Assign UP UP IMA 00125)Line { 1 3 47 } (Up Assign UP UP IMA 00125)Line { 1 3 48 } (Up Assign UP UP IMA 00125)

For details, see the Stinger Reference.

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Displaying IMA group informationAdministrative Tools

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Displaying IMA group information

The imagroups commands displays the status of any IMA groups that have been created, or those that are in use, free, or disabled, on any IMA modules in the system. For example:

imagroups -a

All IMA groups: (dvOp dvUpSt dvRq sAdm nailg)

ima1 {1 1 25} (Up Assign UP UP 1)ima51 {1 2 25} (Up Assign UP UP 51)Slot_2_1 {1 2 29} (Down Idle UP UP 1826)Slot_4_1 {1 4 9} (Down Idle UP UP 1825)ima651 {1 14 50 } (Up Assign UP UP 651)symmetricom {1 14 51} (Down Idle UP UP 675)

For details, see the Stinger Reference.


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363-217-016R9.7.3Issue 2, October 2005

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Using sealing current

............................................................................................................................................................................................................................................................

Overview

Purpose

This section shows how to enable sealing current for the SHDSL LIM with IMA capability.

Contents


• What is sealing current?

• How to use sealing current

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What is sealing current?Administrative Tools

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What is sealing current?

Sealing current is defined in the Bellcore and CCITT Layer 1 specifications. It is a low current (1-20mA) DC signal applied to the copper pair to reduce oxidation at line splices, and to provide a troubleshooting aid in the field.

How to use sealing currentAdministrative Tools

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How to use sealing current

You can enable the use of sealing current on SHDSL lines by using the XDSL-SLOT-CONFIG profile. Following are the profile contents, shown with default values:

[in XDSL-SLOT-CONFIG/{ any-shelf any-slot 0 }]slot-address* = { any-shelf any-slot 0 }sealing-current-on = no

Parameter Setting

slot-address The location of the interface in the system (shelf, slot, port). With the default index, all LIMs are affected by the setting. To use sealing current only for the SHDSL LIM with IMA capability, create a new profile with the appropriate slot number, and set the sealing-current-on parameter to yes .

sealing-current-on Enables or disables sealing current on all ports of the LIM or LIMs indicated by the slot-address setting. By default, sealing current is on during the initialization sequence of the SHDSL LIM with IMA capability. After POST completes, the sealing current circuit is turned off.

Setting this parameter to yes turns sealing current on for 20 seconds once every 24hrs.

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How to use sealing currentAdministrative Tools

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Index

.............................................................................

.............................................................................

.............................................................................

A activation, 2-9

active, 3-6

add-link-cond-time, 3-19

alpha-cell-delin-value, 3-16

alpha-ima-value, 3-15

annexb-anfp-enabled, 2-10

ATM Forum Inverse Multiplexing for ATM (IMA) Specification Version 1.1, 1-9

ATM Forum Traffic Management Specification Version 4.0, 1-7

ATM Forum User-Network Interface (UNI) Specification Version 3.1, 1-7

ATM PVCs, 1-7number of active VP

connections, 1-10

atm-if-delay, 3-8

B beta-ima-value, 3-15

C call-control procedures, 2-4

call-route-info, 2-9

check-far-end-ima-id, 3-7

clock-priority, 2-9

clock-source, 2-9

code-violations, 4-13

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D defect-ratio, 3-20

delta-cell-delin-value, 3-16

dev-line-state, 4-6

diff-delay-max, 3-7

diff-delay-max-obs, 4-20

do-version-fallback, 3-7

DSL Forum TR-060, 1-6

E elapsed-seconds, 4-15

enabled, 2-4

enabling an SHDSL line, 2-5

errored-second, 4-13

ETSI TS 101 524 v1.2.1, 1-6

expected-far-end-frame-length, 3-8

expected-far-end-ima-id, 3-7

F F4/F5 OAM, 1-7

failure-status, 4-19

far-end-check-frame-length, 3-7

far-end-ima-group-state, 4-19

far-end-rx-failure-status, 4-10

far-end-rx-link-state, 4-10

far-end-rx-num-failures-counter, 4-15

far-end-rx-unusable-secs-counter, 4-15

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far-end-sev-errored-secs-counter, 4-14

far-end-txclock-mode, 4-19

far-end-tx-link-state, 4-10

far-end-tx-num-failures-counter, 4-15

far-end-tx-unusable-secs-counter, 4-15

far-end-unavail-secs-counter, 4-15

fault-clearing-time, 3-20

frame-length, 3-7

framer-sync-status, 4-13

G gamma-ima-value, 3-15

group-symmetry-mode, 3-7

gshdsl-psd-type, 2-10

gshdsl-standard-network-type, 2-10

H hardware specifications, 1-5

high-speed-slot-static-config, 3-24

I IEEE 802.1Q-1998 standard, xii

if-group-index, 4-6

ignore-lineup, 2-4, 2-6, 3-7

IMA

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group containing four links, 3-2

group requirements, 3-4

group, creating, 3-9

inverse multiplexing operations, 3-2

software license enabled, 3-9

test pattern procedure, 4-11

IMA modedifferential delay, 1-10

maximum active connections per port, 1-10

maximum number of IMA groups per LIM, 1-10

maximum number of ports in a group, 1-10

IMAGROUP profile, 3-6

ima-group-statistic, 4-21

IMAHW-CONFIG profile, 3-15

ima-id, 3-7

ima-violations-counter, 4-14

in-defect-int-time, 3-20

installation, 1-3

interface-type, 4-6

invalid-intervals, 4-11, 4-21

ITU-T G.991.2, 1-6, 2-2

L lasr, 3-7

last-change-time, 4-20

least-delay-link, 4-20

LED status lights, 1-4

line-config, 2-4

line-mode, 4-5

line-quality, 4-12

line-state, 4-5

line-up-timer, 4-12

link-recovery-type, 3-20

log messages reporting duplicate nailed groups, 3-11

...........................................................................

...........................................................................

loop-attenuation, 4-13

loop-back, 2-9

losw-second, 4-13

M margin, 2-9

master-binding-port, 2-11

Maximum number of IMA groups per LIM, 1-10

Maximum number of two-wire ports in an IMA group, 1-10

max-rate, 2-10

min-rate, 2-10

N nailed-group, 2-9, 3-6, 4-21

name, 2-4

near-end-ima-group-state, 4-19

near-end-rx-failure-status, 4-10

near-end-rx-link-state, 4-10

near-end-rx-num-failures-counter, 4-15

near-end-rx-unusable-secs-counter, 4-15

near-end-sev-errored-secs-counter, 4-14

near-end-tx-link-state, 4-10

near-end-tx-num-failures-counter, 4-15

near-end-tx-unusable-secs-counter, 4-15

near-end-unavail-secs-counter, 4-15

network time reference (NTR), 2-9

network-type, 4-7

ne-tx-clk-mode, 3-7

ne-tx-lid, 3-19

ntr-enabled, 2-9

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O oif-anomalies-counter, 4-14

operational-rate, 4-7

out-defect-int-time, 3-20

P physical interfaces, 1-6

physical-address, 2-4, 3-15

platform support, 1-6

pref-physical-address, 3-8

priority, 3-20

R RADIUS profiles, 2-18

rate-mode, 2-10

rec-link-cond-time, 3-20

related documents, xii

relative-delay, 4-11

RFCs for background information, xii

running-secs, 4-20

rx, 4-19

rx-avail-cellrate, 4-20

rx-frame-length, 4-19

rx-ima-id, 4-19

rx-lid, 4-11

rx-lid-learning-time, 3-20

rx-min-num-links, 3-7

rx-num-active-links, 4-20

rx-num-config-links, 4-20

rx-oam-label-value, 4-20

rx-signal-present, 4-12

rx-stuffs-counter, 4-15

rx-test-pattern, 4-11

rx-testproc-status, 4-11

rx-timing-ref-link, 4-19

S sealing currentheat dissipation with, 1-5

I N - 3363-217-016R9.7.3Issue 2, October 2005

Index

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how to use, 4-27

self-test, 4-12

severely-errored-second, 4-13

SHDSLATM circuit on, 2-16

binding two adjacent ports, 2-11

enabling a line, 2-5

ima-options subprofile, 3-19

line-config subprofile, 2-6, 2-8

profile contents, 2-4

sublayers used in bonding, 2-2

two-wire and four-wire ports, 2-2

SHDSL-STAT profile, 4-4

snext-margin, 2-9

SNMP access, 1-2

snr-margin, 4-13

spare-physical-address, 4-8

sparing-change-counter, 4-8

sparing-change-reason, 4-8

sparing-change-time, 4-8

sparing-mode, 2-4

sparing-state, 4-8

stur-loop- attenuation, 4-13

stur-snr, 4-13

T tpp-state, 3-8

tpp-test-link, 3-8, 4-20

tpp-test-pattern, 3-8, 4-21

tpp-test-status, 4-21

Traffic management, 1-7

Traffic policing, 1-7

transmit-power, 4-12

trunk interfacesCAC support, 3-24

trunk-cac-config, 3-24

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.............................................................................

trunk-group, 2-8

tx-avail-cellrate, 4-20

tx-lid, 4-10

tx-min-num-links, 3-7

tx-num-active-links, 4-20

tx-num-config-links, 4-20

tx-oam-label-value, 4-20

tx-stuffs-counter, 4-15

tx-timing-ref-link, 4-19

U unavailable-second, 4-13

UNI modedefined, 2-2

number of active connections per port, 1-8

unit-type, 2-9, 4-6

up-down-cntr, 4-12

V valid-intervals, 4-11, 4-21

version, 3-7

Virtual path connections, 1-10

VPI-VCI values, 1-8

vpi-vci-range, 4-9, 4-21

vp-switching-vpi, 2-9, 3-8, 4-9, 4-21

I N - 4 363-217-016R9.7.3Issue 2, October 2005

Index

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Documents

Stinger Release 9.7.3 or later SHDSL with IMA Capability ... · PDF fileStinger® SHDSL LIM with IMA Capability Configuration Guide Software version 9.7.3 363-217-016R9.7.3 Issue 2