DXX 6345 Description

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1551-ZAP 701 10 UEN REV A 2003-09-22

DXX MANAGED ACCESS SYSTEM DXX 6345 SWITCH NODE

PRODUCT DESCRIPTION

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DXX Managed Access System

DXX 6345 Switch Node

Product Description

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1551-ZAP 701 10 UEN REV A 2003-09-22


PRODUCT DESCRIPTION DOCUMENT INFORMATION

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DOCUMENT INFORMATION

Current Version

Document No/Rev Title Reference

1551-ZAP 701 10 Uen Rev A 2003-09-22

DXX Managed Access System, DXX 6345 Switch Node, Product Description

6345_pd001 Issue 1.0

Replaced Document

Document No/Rev Reasons for Update

New document

Document Checking and Approval

Controlled by (Magnus Dickson)

Date

2003-09-22

Magnus Dickson

Approved by (Anders Eriksson) Date 2003-09-22

Anders Eriksson

© 2003 Ericsson AB. All rights reserved.

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PRODUCT DESCRIPTION

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Table of Contents

1 Introduction ..............................................................................................................................4

2 Applications...............................................................................................................................6

2.1 STM-64 and STM-16, Link/Ring/Mesh..............................................................................6

2.2 Ring Interconnect...............................................................................................................6

2.3 SDXC 4/3/1.........................................................................................................................7

2.4 Data Transport...................................................................................................................8

2.5 Solutions Based on Combined DXX Products.....................................................................9 2.5.1 DXX 6345 Switch Node combined with the DXX 6320 Edge Node and the DXX 6340 Switch Node...9

3 System Description..................................................................................................................10

3.1 Interface Types.................................................................................................................10

3.2 Modularity .......................................................................................................................10

3.3 Synchronization Architecture ...........................................................................................10

3.4 Management System.........................................................................................................11

3.5 Subrack ............................................................................................................................11

3.6 Connection Function........................................................................................................12 3.7 Protection.........................................................................................................................12

4 Configuration Examples.........................................................................................................13

5 Platform Overview ..................................................................................................................15

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PRODUCT DESCRIPTION INTRODUCTION

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1 Introduction The DXX 6345 switch node is part of the DXX product portfolio for telecommunication transmission networks based on the standards and recommendations on SDH and OTN from ETSI and ITU-T. The DXX 6345 switch node enables the user to build future proof networks, which easily adapt to new services and have the ability of easy expansion. By utilizing the features of the DXX 6345 switch node, it is possible to solve the evolving needs for multiple services, networking, higher transmission rates and switching capacity . The DXX 6345 switch node is a next-generation SDH and multi-service provisioning platform that expands these capabilities together with the rest of DXX’ transport product portfolio.

• The DXX 6345 switch node can efficiently act as multi-service-platform with a very compact

architecture. • The DXX 6345 switch node fits equally well in different layers of the network thereby supporting a

distributed architecture. • The DXX 6345 switch node concept allows flexible configurations by combining both higher order SDH

(4/4) and lower order SDH (4/1) routing elements. Characteristics of the DXX 6345 switch node are: • Very high density and high capacity node fabric with 8 universal interface slots • 40 Gbit/s capacity per subrack • SDH and data interfaces, including support of electrical STM-1. • Independent switching of VC-4, VC-3 and VC-12 signals with separate 4/4 and 4/3/1 matrices allows for

independent grooming and protection at VC-12, VC-3 and VC-4 layer Applications: • Very efficient and powerful distributed grooming and cross-connect solutions through 40 Gbit/s capacity

4/4 and 4/3/1 cross-connect • Transport networks, regional networks in particular • Leased line and mobile network • 2.5-10 Gbit/s ring and multi-ring ADM

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PRODUCT DESCRIPTION INTRODUCTION

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• High Capacity Radio Access Network (HRAN) Hub, Ring Interconnector The DXX 6345 switch node allows for very compact, reliable and cost-efficient transmission systems with high flexibility. It enables unlimited drop of up to 128 VC-4 signals from an STM-64 line or multi-ring add-drop multiplexer. Configured as a VC-4 cross-connect up to 256 STM-1 equivalent physical ports are available. One ADM64 with two STM-64 interfaces and drops of 8 x STM-16 are implemented within a height of just 47,4 cm allowing for four systems in a standard, 300 mm deep ETSI rack. Configured as a combined VC-4, VC-3 and VC-12 cross-connect up to 256 STM-1 equivalent ports at 4/4 level and 128 ports at 4/3/1 level are available. Both network protection schemes as well as equipment protection are an integrated part of the DXX 6345 switch node thereby eliminating single point of failures. Management of the DXX 6345 switch node can, equally as for other DXX transport products, be performed from Ericsson DXX 8100 Network Manager. DXX 6345 can also be managed as stand-alone with a Craft Terminal. This product description describes the DXX 6345 switch node multi-service platform supporting a whole range of network element types like add-drop multiplexers, terminal multiplexers and cross-connect systems. All types can be equipped with numerous interfaces like SDH, up to STM-64, and various data interfaces and connect at both higher and lower order. The DXX 6345 and DXX 6350 Switch Nodes belong to the same product family and use the same interface modules. The main difference is in size of 4/4 cross-connect capacity. The 6345 and 6350 nodes support switching of 256 and 640 ports @ 4/4 respectively. For more detailed information about the specific release content please refer to the DXX 6345 switch node Product Reference Guide. Document number 2135-ZAP 70110.

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PRODUCT DESCRIPTION APPLICATIONS

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2 Applications

2.1 STM-64 and STM-16, Link/Ring/Mesh The DXX 6345 switch node architecture is ideal for STM-16 and STM-64 regional/metropolitan rings with nodes that drop off a mixture of SDH, 100 Mbit/s FE and GbE signals. An STM-64 example is shown in Fig. 2-1. The traffic in a ring can be protected using SNC or 2 fibre MS-SPRing protection.

Fig. 2-1 DXX 6345 switch node as ring add-drop multiplexer

Another application is a simple point-to-point system with two terminal multiplexers. This application can also be expanded with line add-drop multiplexers where an ADM is inserted in the line in order to give access to a number of channels in each direction. The ADM-64 allows dropping off a total capacity of 128 x STM-1 equivalents.

Fig. 2-2 DXX 6345 switch node as terminal and linear add-drop multiplexer

1+1 protection of the line, like MSP 1+1 or SNCP, is supported.

2.2 Ring Interconnect A cross-connect is generally used to make remote connection of line interfaces. It is therefore desirable to get a cross-connect that can encompass all the relevant interfaces. With the DXX 6345 switch node it is possible to interconnect up to 2 STM-64 rings or alternatively up to 8 STM-16 rings, all with full connectivity. In other words, effectively a 20 Gbit/s ring is feasible. These interconnections of multiple Add-Drop Multiplexers are made within one single equipment and are fully protected; hereby the need for cumbersome dual node ring interconnects based on e.g. MS-SPRing-SNC/MS-SPRing is eliminated.

STM - 16/STM - 64 ring

DXX 6345 node

Legend:

STM - 16/STM - 64 line

DXX 6345 node

Legend:

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Fig. 2-3 Network example with interconnected rings

2.3 SDXC 4/3/1 Because of its very high capacity and density the DXX 6345 switch node represents large Capital Expenditure (CapEx) and Operational Expenditure (OpEx) savings when compared to traditional SDXC installations. This also means that a distributed network architecture with 4/1 switching can be made very efficiently, so instead of back-hauling traffic to a centralized 4/1 switch, switching can be done locally and only a minor part of the traffic needs to go inter-regional. Other 4/1 cross-connect applications are interconnection of rings and grooming of traffic from multiple rings. The DXX 6345 switch node offers a full non-blocking 4/1 cross-connect capacity of 128 STM-1 equivalents within one single network element. Fig. 2-4 shows how the DXX 6345 switch node is applied as a cross-connect to groom the traffic between several rings. Dependent on the type of interfaces up to 32 rings can be interconnected. Due to the very high density of the DXX 6345 switch node resulting in much less requirements to power and floor-spacing compared to traditional 4/1 switches, the DXX 6345 switch node perfectly matches a distributed network architecture. Hereby also utilizing the network capacity more efficiently by reducing the need for back-hauling of traffic. Lower order interfaces are available by introducing the DXX 6310 access edge node, the DXX 6320 edge node and the DXX 6340 switch node in connection with the DXX 6345 switch node.

DXX 6345 node

Legend:

STM16 rings STM16/STM64

rings

DXX 6350 node

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Fig. 2-4 DXX 6345 switch node used for multiple ring-interworking/grooming at 4/1 level

2.4 Data Transport The DXX 6345 switch node supports transport of data services, both as data services externally mapped into SDH, e.g. as transport of contiguous concatenated signals, but also as direct transport of Ethernet packets over SDH. The latter is obtained by using dedicated interface modules, which interfaces directly at 100 Mbit/s FE or 1 Gbit/s Ethernet, hereby avoiding the use of SDH interfaces at e.g. router equipment. By eliminating the need for SDH interfaces on the LAN/router equipment the overall investment will be reduced significantly. The DXX 6345 switch node supports dynamic bandwidth allocation, which means that the user can adjust the size of the transport pipe in a flexible way. For GbE the pipe can be adjusted between a size of one single VC-4, i.e. 150 Mbit/s up to full capacity of the GbE signal by virtual concatenation of VC-4s. For 100 MbE both mapping and Layer2 switching is supported and the capacity can be adjusted between a single VC-12 up to full bandwidth. By utilizing this feature it is possible to offer a pay-as-you-grow service to the end-customer. Furthermore due to the support of Link Capacity Adjustment Scheme (LCAS) and the possibility of diverse routing, if a member of the concatenated group is failing, e.g. due to a fiber break, the link remains in service albeit at a lower capacity, i.e. the link works in a protected way. The transport of GbE applications is shown in Fig. 2-5

Fig. 2-5 DXX 6345 switch node used for transport of GbE (LCAS and diverse routing).

STM - 1/4/16 STM - 1/4/16

STM - 1/4/16 STM - 1/4/16

STM - 16/STM - 64

DXX 6345 node

Legend:

DXX 6340 node

GbE Router/ Switch

STM-16/STM-64 ring

DXX 6345 Legend:

GbE

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2.5 Solutions Based on Combined DXX Products

2.5.1 DXX 6345 Switch Node combined with the DXX 6320 Edge Node and the DXX 6340 Switch Node

Solutions, where lower order PDH interfaces are needed, can easily be made, by combining the DXX 6345 switch node with the DXX 6310 access edge node and the DXX 6340 switch node. In these products lower order PDH interfaces like 2 Mbit/s, 34 Mbit/s and 45 Mbit/s and data interfaces like 100 MbE are available. As the overall capacity of the PDH interface modules is relatively small the physical placement of those modules in the DXX 6340 node ensures that the high density of the DXX 6345 switch node can be used efficiently. Fig. 2-6 shows a mixed node of a DXX 6340 node and a DXX 6345 switch node. Here, the DXX 6345 switch node is used for ring-interworking and grooming/consolidation at both 4/4 and 4/1 level; further the DXX 6345 switch node enables the use of STM-64 interfaces.

Fig. 2-6 Combined DXX 6340 switch node and DXX 6345 switch node

STM-N

1 GbE

PDH/Data I/F

STM16/STM64

DXX 6345

Legend:

DXX 6340

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PRODUCT DESCRIPTION SYSTEM DESCRIPTION

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3 System Description

3.1 Interface Types The DXX 6345 switch node supports a number of SDH interfaces ranging from STM-1 up to STM-64, further Fast Ethernet and Gigabit Ethernet interfaces are supported.

Interface Bit-rate Options Number of interfaces per module

STM-64 9953 Mbit/s Optical I-64.1, S-64.2, L-64.2 1 STM-64 10600 Mbit/s Optical WL-64.2, colored 1 STM-16 2488 Mbit/s Optical S-16.1, L-16.2 2 STM-16 2488 Mbit/s Optical WL-16.2, colored 2 STM-4 622 Mbit/s Optical S-4.1, L-4.1, L-4.2 8 STM-1 155 Mbit/s Optical S-1.1, L-1.1, L-1.2 8 STM-1 155 Mbit/s Electrical 8 1 GbE 1000Mbit/s Optical, SX and LX 4 FE 100 Mbit/s Optical, FX 16

3.2 Modularity The core of the transport system is the matrix module. This module holds a complete 384 STM-1 equivalent port VC-4 matrix and also a 128 port VC-12 matrix. The synchronization function of the network element and MS protection switching control is located on the module also. The matrix module can be 1+1 equipment protected in hot standby. The subrack can hold up to eight interface modules of a total capacity up to 256 STM-1 equivalents. Interface modules can be STM-1 electrical/optical, STM-4, STM-16, STM-64, 100 Mbit/s FE and GbE interface. The STM-1 electrical modules can be 1:4 equipment protected. For physical interconnection of the electrical STM-1s small TIP modules that contain the CMI driver/equalizer and switches for equipment protection are used.

Each interface module holds a number of interfaces dependent on the type of interface module as indicated in the table above.

3.3 Synchronization Architecture The synchronization function is located on the matrix module. The system clock is selected from a list of reference sources: • four STM-n inputs, T1 reference, which can be freely chosen • two external sources, T3 reference, either 2 Mbit/s or 2 MHz The DXX 6345 node supports the SDH synchronization management, by using the Synchronization Status Message (SSM) functionality, which makes it possible to protect the synchronization network. This also applies to the dedicated Sync. input ports.

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3.4 Management System Management/supervision from an Operations System (OS) is possible via 3 types of interfaces: • F-interface (craft terminal interface) • Ethernet • Embedded Control Channel (ECC) As to the ECC channels two channels per STM-1 / STM-4/ STM-16 / STM-64 interface are available. The ECC may be transferred in: • DCCr bytes (D1-D3) of regenerator section overhead • DCCm bytes (D4-D12) of multiplexer section overhead • TU-12 signals The DXX 6345 switch node implements an ES-IS and IS-IS routing function.

3.5 Subrack The DXX 6345 switch node subrack can hold • up to 9 interface modules (8 for working traffic) • 2 matrix modules for 1+1 equipment protection • support modules like Central Controller and Power Supply Filter • fans Fig. 3-1 shows the DXX 6345 node subrack. Each interface position support a traffic capacity up to 5 Gbit/s dependent on the type of interface module used, which gives a maximum capacity of 40 Gbit/s for one single subrack.

Fig. 3-1 DXX 6345 switch node subrack

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3.6 Connection Function The connectivity of the DXX 6345 node can be described by a 384 port VC-4 cross-connect, whereof 256 ports are available as external interfaces and 128 ports interface to the lower order connection function. The lower order part can cross-connect up to 128 ports at 4/1 level, see Fig. 3-2. The connection function is fully non-blocking. The 4/4 and 4/1 matrices are completely independent, which allows the operator to truly operate the network elements on either 4/4 or 4/1 levels depending on the actual needs.

Fig. 3-2 DXX 6345 switch node connectivity

3.7 Protection The ADM, SDXC and TM equipment can perform 1+1 SNC protection of the VC-4, VC-3 and VC-12 signals and 2 fiber MS-SPRing protection as well as 1+1 MSP protection of the line signals. The SNC protection can be between any two VC-n signals and is defined by the detection criteria: • Loss of pointer and AIS detection in the server layer, further the SNC/N protection also uses the trail

trace identifier mismatch, unequipped and signal degrade from the VC-n layer. 2 fiber MS-SPRing and 1+1 MSP is possible between any two STM-N interfaces in the same subrack. MS protection is based on Loss of Frame and AIS detection in the MS layer. The MS protection schemes are defined by the topology: • 2 fiber MS-SPRing is a ring protection mechanism, which protects against link and node failures in rings

of up to 16 nodes. • 1+1 MSP is a line protection mechanism, which protect against link and module failures. On the equipment side equipment protection is available as: • 1+1 protection of cross-connect • 1+1 protection of synchronization function • 1:N of STM-1electrical modules (N up to 4) • Distributed power supply • 1+1 protection of power supply filter • Fans (2 out of 3)

384 VC-4 HO

128 VC-4

LO

I/FExternal I/F

~ 256 VC-4

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PRODUCT DESCRIPTION CONFIGURATION EXAMPLES

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4 Configuration Examples The DXX 6345 switch node offers full connectivity between all module slots thereby allowing very flexible and un-restricted configurations. By combining the DXX 6345 switch node and the DXX 6340 switch node, a very compact and power saving solution can be made. The DXX 6345 switch node holds the higher order interfaces and the cross-connect functionality both at 4/4 and 4/1, while the lower order PDH interfaces like e.g. 2 Mbit/s interfaces are located in the DXX 6340 switch node. In this way the relatively low density of the PDH interface modules does not occupy space in the DXX 6345 switch node subrack which otherwise would lead to wasted capacity of the cross-connect. With such an arrangement one bay of 60x60 cm2 footprint can hold up to 128 port SDXC 4/4/1 with for instance 14 x STM-16 and 756 x E1, as shown in Fig. 4-1.

Fig. 4-1 Very dense DXX 6340 switch node and DXX 6345 switch node solution

By combining the interface modules a whole range of very compact network elements can be created, as examples: • Fig. 4-2, an STM-64 ADM and drop of 64 signals at STM-16, STM-4 and STM-1 (both optical and

electrical) level, • Fig. 4-3, eight STM-16 rings in parallel, which gives the functionality of a 20 Gbit/s ring with full

interconnectivity at each node • Fig. 4-4, full 128 port 4/1 cross-connect with 32 x STM-1 and 24 x STM-4

Fan

DXX 6345 node

DXX 6340 node

DXX 6340 node

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PRODUCT DESCRIPTION CONFIGURATION EXAMPLES

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Fig. 4-2 ADM64 drop at STM-16, STM-4 and STM-1

Fig. 4-3 Eight STM-16 rings with full connectivity at 4/4 level

Fig. 4-4 Full 128 port 4/1 cross-connect with 32 x STM-1 and 24 x STM-4

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PRODUCT DESCRIPTION PLATFORM OVERVIEW

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5 Platform Overview • Equipment types

• TM64, ADM64 • TM16, ADM16 • TM4, ADM4 • Multi-ring applications • 256 port SDXC 4/4 • 128 port SDXC 4/3, 4/1

• Interfaces • STM-64: I-64.1, S-64.2, L-64.2 • STM-16: S-16.1, L-16.2 • STM-4: S-4.1, L-4.1, L-4.2 • STM-1: electrical, S-1.1, L-1.1, L-1.2 • 1 GbE: SX, LX • 100 Mbit/s FE: FX • Automatic Laser Shutdown/Restart (ALS/ALR) on all optical SDH interfaces

• Redundancy • Distributed power supply • 1+1 of cross-connect and synchronization function • 1:N of STM-1e modules

• Protection • 1+1 MSP and 2 fiber MS SPRing • VC-n SNC/I and SNC/N protection

• General • VC-n bi-directional connectivity • Test access and loop-back • Full synchronization management • Performance management, near-end and far-end • Remote software download • Alarm configuration and filtering on class level • Auxiliary port handling • Password protection of network elements

• Communications • NE management via Ethernet, DCCr, DCCm, TU-12, F interface (craft terminal) • ES-IS and IS-IS level 1 routing • User Channels • EOW

Documents

DXX 6345 Description