How does CX2K work.pdf

How CX2600 and CX2200 (CX2K) work

How CX2600 and CX2200 (CX2K) work

April 20-24, 2009NEC Corporation

NEC Confidential

Agenda

OverviewFunctionalities

OptimizationData OffloadingQoS FunctionPseudo Wire EmulationSynchronization over a Packet Switched NetworkEthernet OAM

ApplicationConclusion

NEC Confidential

CX2K Overview

NEC Confidential

Aggregates traffic from fixed and mobile technologies: 2G (TDM), 3G (ATM), 3.5G (IP), Wimax (IP) and future (LTE).

Transports Legacy and IP traffic through PDH/SDH, ATM or IP networks.

Unifies TDM and ATM traffic into an IP network (using PWE feature).

High bandwidth capacity with QoS management according to each service requirement.

Complete set of interfaces: Ethernet 10/100M/1G, ATM, SDSL, SDH and TDM.

Data and data traffic separation and transport through IP and TDM networks

CX2600 seriesCX2600 series

TDM NWPDH

ATM

SDH

ATM

SDH

ATM

RNC

BSC

3G

2GBTS

Node B

CX2KCX2KEthernet NW

Core NW

IP/ Ether

IP/ Ether

IP/ Ether

Node B

3.5GCX2KCX2K

NEXT GENERATION BACKHAUL AGGREGATOR

Integrated Packet switch and TDM cross-connect.

Highly flexible and accurate synchronization features

Full featured VLAN , IPv6 QoS support and bandwidth guarantee among different traffic and customers

CX2200CX2200(compact box)(compact box)

CX2200 / CX2600 Overview

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Mobile Backhaul cost-effective solution by using CX2K

2G/2.5G Backhaul based on TDMConcern- add equipment for E1 line increasing- increase leased line

2G/2.5G Backhaul based on TDM2G/2.5G Backhaul based on TDMConcern- add equipment for E1 line increasing- increase leased line

3G/3.5G Backhaul based on ATMConcern- add equipment for E1 line increasing- increase leased line- correspond data traffic increasing

3G/3.5G Backhaul based on ATM3G/3.5G Backhaul based on ATMConcern- add equipment for E1 line increasing- increase leased line- correspond data traffic increasing

ALL IP BackhaulConcern- deal at same time with different

technology- replace equipment

ALL IP BackhaulALL IP BackhaulConcern- deal at same time with different

technology- replace equipment

Traffic Aggregation

How is cost saving realized using CX2K?How is cost saving realized using CX2K?

Traffic Aggregation and separation with off-load

Single platform for backhaul evolution(CX supports various interface, Hybrid switch, PWE etc)

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CX2K Functionalities

1. How is Optimization being done?

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Multiplexing & Aggregation Schemes for TDM

CX2600,CX2200

CX2600

E1

E1

E1TDM

64K TSW

E1

E1

XC for each 64k Timeslots


E1

E1

STM1(ch)TDM

64K TSW

E1

E1

STM1



E1

Fifteen Time Slots(15 x 64kbps)

Fifteen Time Slots(15 x 64kbps)

Thirty Time Slots(30 x 64kbps)

Full Time Slots(30 x 64kbps)

Full Time Slots(30 x 64kbps)

Two VC-12 in STM-1(2 x 2Mbps)

BTS

BTS

BTS

BTS

Several E1s are multiplexed and mapped on VC12s into a STM-1 interface.

Several E1s (partially occupied) are multiplexed to one or more E1s interfaces.

CX2K reduce the number of E1 lines through a TDM aggregation CX2K reduce the number of E1 lines through a TDM aggregation based on an integrated 64K crossbased on an integrated 64K cross--connect according to occupied connect according to occupied ratio.ratio.

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Multiplexing & Aggregation Schemes for ATM

CX2600,CX2200

ATM

E1(IMA)GbE

PWE

E1(IMA)

E1(IMA) ATMoE

ATMoE

ATME1(IMA) ATMoE

VLAN

ATM

GbE

PWE

EtherSW

VPI/VCI is mapped to VLAN internally


Several ATM E1s are multiplexed into one or more ATM E1s with detection of idle (null) cells.

ATM

GbE

PWE

ATM

E1(IMA)

CX2600,CX2200

ATM

E1(IMA)GbE

PWE

STM-1

E1(IMA) ATMoE

ATMoE

ATME1(IMA) ATMoE

VLAN

ATM

GbE

PWE

EtherSW

STM1



ATM

GbE

PWE

ATM

STM-1

Null cellNode-B

Node-B

Node-B

Node-B

As the encapsulated header is only used internally, EtherSW performs switching with no additional output overhead.

Several ATM E1s are multiplexed into one STM-1 with detection of idle (null) cells.

CX2K reduce the amount of E1 CX2K reduce the amount of E1 IMAsIMAs (3G traffic) through an ATM (3G traffic) through an ATM aggregation based on a full featured hybrid switch according to aggregation based on a full featured hybrid switch according to occupied ratio.occupied ratio.

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Multiplexing & Aggregation Schemes for IP backhaul

CX2K

TDMoP and ATMoP functionalities encapsulates TDM and ATM traffic, respectively.

All Traffic is mapped into VLANs according to bandwidth and QoS requirements.

GbEEther

FE/GbEPolicer

ATME1(IMA) ATMoP

ATME1(IMA) ATMoP

TDSW

VLAN

GbE

E1 CESoPTDM

E1 CESoPTDM

FE/GbE

Guaranteedbandwidthfor TDM

1:1 Protection (EtherPS)

Allocated bandwidthFor ATM and Ether is configurable

Ethernet Switch

HSDPA

WIMAX

BTS

Node-B

2G, 3G/3.5G traffic are transported through PWE (Pseudo Wire 2G, 3G/3.5G traffic are transported through PWE (Pseudo Wire Emulation) with guaranteed bandwidth.Emulation) with guaranteed bandwidth.CX2K can provide CX2K can provide QoSQoS according to each service requirement.according to each service requirement.

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Application for the existing PDH/SDH network

RNC/BSC

Existing PDH networkBTS/Node-B

CX2200CX2200 CX2600CX2600

Wimax

E1 x 1 8(Channel Bonding)

RNC/BSC

BTS/Node-B

CX2200CX2200 CX2600CX2600Wimax

STM-1

E1

E1

Ether

E1

E1

Ether

2G, 3G/3.5G traffic and Broadband data (2G, 3G/3.5G traffic and Broadband data (WimaxWimax etc) can be sent to etc) can be sent to existing PDH/SDH network.existing PDH/SDH network.CX2K can deliver expanding service and service offerings for fasCX2K can deliver expanding service and service offerings for fast t return on investment by using existing PDH/SDH network.return on investment by using existing PDH/SDH network.

Existing SDH network

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2G(BTS)

Ether Node

3G(NodeB)

Ether

E1(TDM)

E1(ATM)

Ethernet

EoSDHE1(TDM)

E1(ATM)

FE/GbE

Packet SW

TDMSW

TDMoP

ATMoPGFP

CX2200/CX2600

STM-1

CX2Ks Ethernet over SDH feature

Ether

E1(TDM)

E1(ATM)

Ethernet

EoSDH E1(TDM)

E1(ATM)

FE/GbE

Packet SW

TDMSW

TDMoP

ATMoPGFP

CX2200/CX2600

2G(BSC)

3G(RNC)Ether

EthernetEthernet

EthernetEthernet STMSTM--11E1(TDM/ATM)E1(TDM/ATM)E1(TDM/ATM)

Ethernet EthernetEthernet

EthernetEthernet E1(TDM/ATM)E1(TDM/ATM)

TDM: SAToP/CESoPSNATM: ATMoPTDM: SAToP/CESoPSNATM: ATMoP TDM: SAToP/CESoPSN

ATM: ATMoPTDM: SAToP/CESoPSNATM: ATMoP

GFP mapping GFP mapping


Ether

STMSTM--11

Ether Ether



Enable to transport Ethernet frames onto SDH network by Ethernet over SDH (GFP mapping).TDM/ATM frames also can be transmitted to SDH network with Ethernet frames by Ethernet conversion (CES). 2 STM-1 ports are available for transporting Ethernet frames onto SDH interfaces. Ethernet over SDH module supports 1+1 STM-1 APS function for enhanced reliability.

* CX2600 : end of Dec, 2008CX2200 : end of Sep, 2008

NEC Confidential

2G(BTS)

Ether Node

3G(NodeB)

Ether

E1(TDM)

E1(ATM)

Ethernet

EoPDHE1(TDM)

E1(ATM)

FE/GbE

Packet SW

TDMSW

TDMoP

ATMoPGFP

CX2200/CX2600

E1 x 1~8

CX2Ks Ethernet over PDH feature

Ether

E1(TDM)

E1(ATM)

Ethernet

EoSDH E1(TDM)

E1(ATM)

FE/GbE

Packet SW

TDMSW

TDMoP

ATMoPGFP

CX2200/CX2600

2G(BSC)

3G(RNC)Ether

EthernetEthernet

EthernetEthernet E1 x 1~8E1 x 1~8E1(TDM/ATM)E1(TDM/ATM)E1(TDM/ATM)

Ethernet EthernetEthernet

EthernetEthernet E1(TDM/ATM)E1(TDM/ATM)

TDM: SAToP/CESoPSNATM: ATMoPTDM: SAToP/CESoPSNATM: ATMoP TDM: SAToP/CESoPSN

ATM: ATMoPTDM: SAToP/CESoPSNATM: ATMoP



Ether

E1 x 1~8E1 x 1~8

Ether Ether



Enable to transport Ethernet frames onto PDH network by Ethernet over PDH (GFP mapping).Channel bonding is supported as well.TDM/ATM frames also can be transmitted to PDH network with Ethernet frames by Ethernet conversion (CES).

* CX2600 : 1st half of 2009CX2200 : the end of Dec, 2008

NEC Confidential

2. How is Data Offloading being done?

NEC Confidential

Data Offloading can be realized through the CX2Ks Hybrid Switch Capability

CX2K Multi-service switching Diagram

E1 Leased Line

SDH / ATM Network

Packet Network

BSC

RNC

E1/STM-1

E1(IMA)/STM-1

FE/GbE

E1(TDM)/E1(IMA)/STM-1

FE/GbE

TrafficSeparation:

CellMUX

TDM SW (64kbps)

Packet SW

CX2600/CX2200

EoS

CESoPSN/SAToP

CESoPSN/SAToP

ATMoPCellMUX ATMoP

Ethernet over SDH will be available end of Sept. 2008

NEC Confidential

E1(ATM)

Traffic Separation

E1(TDM) E1(TDM)TDM SW

Packet SW

CX2200

Classification and separation of the traffic based on service requirement can be realized on CX2200.

Classification and separation of the traffic based on service requirement can be realized on CX2200.

2G(BTS)

3G(Node-B)

E1(ATM)

FE/GbE

Packet Network

Data traffic(Best effort)

Voice(Critical traffic)

PDHSTF

P

-

S

W

MEM

RadioFrameMUX

Direct Mappingto Radio Frame

E1E1E1

ETH

ETH

PASOLINK NEO

PASOLINK & CX2200 solution Off-load of data traffic can be realized on CX2200 when expanding

broadband access service Expanding capacity with same frequency band can be realized Maintain service quality of legacy service

Expand capacity with same frequency band Expand capacity with same frequency band

NEC Confidential

3G and 3.5G voice traffic can directly be sent through a TDM/ATM network (real time services)

3G and 3.5G data traffic can be sent through an IP Network (non real time services)

Intelligent QoS switch allows gradual migration of Voice and Data traffic to a pure IP network.

GbEEthernet Switch

GbEEther

FE/GbEPolicer

ATME1(IMA) ATMoP

ATMoPATM

E1(IMA) ATMoPVLAN

ATME1(IMA) ATMoP

STM1

Traffic separation between Voice and Data based on VPI/VCI

Packet Switch with ATMoP function.HSDPA

WIMAX

CX2K

Classification and Separation Schemes

Node-B

Voice can be sent to TDM/ATM network and data traffic from 3G anVoice can be sent to TDM/ATM network and data traffic from 3G and d 3.5G can be sent directly to an IP/Ethernet network considering 3.5G can be sent directly to an IP/Ethernet network considering each each QoSQoS service requirement.service requirement.

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3. QoS Function

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User A: 100Mbpsassigned basedon the ratio of input traffic rate.

QoS Function

Bandwidth control based on Best Effort, output traffic rate of each flowis assigned based on the ratio of input traffic rate.

User B: 50Mbps

Physical port BW=100Mbps

User A: 67Mbps

User B: 33Mbps

Best Effortequipment

Traffic of heavy users (ex: P2P users) can occupy bandwidth of the physical port-> unfare condition occurs between each users!

What is Best Effort?

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CIR: 20MbpsBE: 50Mbps


100Mbps CIR: 20MbpsBE: 46Mbps


Minimum guarantee rateOperator A: 20MbpsOperator B: 10Mbps

100M

Incoming BW200M

Time

CIR2BE1

CIR1

BE2100M

Time

CIR2BE1

CIR1

UBR2Outgoing BW

BE2

In case of the congestion,traffic is properly allocated based on the minimum guarantee rate.

MinimumGuarantee

MaximumLimitation

Fair RateControl

CX2K performs advanced bandwidth control based on traffic flow .Minimum and fair extra bandwidth can be assigned according to service and customers requirements ideal for site sharing & BW reuse

Fare Rate sharing and Bandwidth control

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QoS Mechanism (1) Overview

Class Mapping

Ingress Policer

Output Scheduler

Switch Fabric

Class Mapping

Egress Policer

Token Bucket

No.of VLANsIPv4 ToS/DSCP IPv6 TC/DSCPVLAN PRI Ethertype

MACVLAN

EthertypeIPv4/v6

MACVLAN

EthertypeIPv4/v6

Pri A

Ingress Processing

VLAN1Pri B Pri C Pri D

Th ATh BTh C

Th D

VLANn Others

Per-flow Rate Monitor

DiscardThreshold

Round Robin

No.of Egress Ports

Switching Egress Processing

Policy Rule

The CX2600 is designed with NECs original Buffer-less per-flow metering algorism to suppress the jitter and delay ultimately.

Scheduling per VLAN offers Fair Sharing rate to each VLAN.

The CX2600 is designed with NECs original Buffer-less per-flow metering algorism to suppress the jitter and delay ultimately.

Scheduling per VLAN offers Fair Sharing rate to each VLAN.

Classification the priority class and overwrite CoS field

Classification the priority class and overwrite CoS field

Policing per VLAN with RED (Random Early Discard) for each priority class

Policing per VLAN with RED (Random Early Discard) for each priority class

Scheduling per VLAN(Minimum rate guarantee and Fair Sharing for remained bandwidth)

Scheduling per VLAN(Minimum rate guarantee and Fair Sharing for remained bandwidth)

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QoS Mechanism (2) Class Mapping

Overwriting CoS values and determining the internal priority classes based on the policy rule per VLANs

Class Mapping

Ingress Policer

Output Scheduler

Switch Fabric

Class Mapping

Egress Policer

Ingress Processing Switching Egress Processing

ClassMapping

IPv4 ToS/DSCP IPv6 TC/DSCPVLAN PRI Ethertype

MACVLAN

EthertypeIPv4/v6

MACVLAN

EthertypeIPv4/v6

Policy Rule

Ingress Egress

IPv4 ToS/DSCP IPv6 TC/DSCPVLAN PRI Ethertype

MACVLAN

EthertypeIPv4/v6

MACVLAN

EthertypeIPv4/v6

Policy Rule

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QoS Mechanism (3) Policer

Ingress

All parameters are configurable per VLANsVLAN CoS are mapped to 4 classes internallyMaximum bandwidth and burst length are configurable for each 4 classDrop Mechanism is selectable

Egress

The same configuration as Ingress

Class Mapping

Ingress Policer

Output Scheduler

Switch Fabric

Class Mapping

Egress Policer

Ingress Processing Switching Egress Processing

Policer

Token Bucket

No. of VLANs

Pri A Pri B Pri C Pri D

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4. Pseudo Wire Emulation Function

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E1(ATM)

E1(TDM)

Pseudo Wire Emulation

2G(BTS)

3G(Node-B)FE/GbE

E1TDM

E1ATM

SAToP/CESoPSN

ATMoP

CX2200

FE

Wimax

FE/GbEPDHSTF

P

-

S

W

MEM

RadioFrameMUX

Direct Mappingto Radio Frame

E1E1E1

ETH

ETH

PASOLINK NEO

Shaper w/ bufferClassifier

M A C

V L A N

Ethertype

IPv4/v6

M A C

V L A N

Ethertype

IPv4/v6

Shaping Rate

PASOLINK & CX2200 solution The legacy service (2G/3G) and next generation service are integrated on Ethernet Best effort services are integrated on CX2200

Service bandwidth can be optimized (QoS)

The transport of TDM/ATM service through the packet network can be realized on CX2200. The transport of TDM/ATM service through the packet network can be realized on CX2200.

UBR2(3G best effort)

UBR1(Wimax best effort)

CBR(Realtime service)

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Packet Header

T1 Payload

CESoP

Ch24Ch24 Ch2Ch2 Ch1Ch1 FF Ch24Ch24 Ch1Ch1 FF Ch24Ch24 Ch2Ch2 Ch1Ch1 FF Header Header

Header Header FFCh1Ch1Ch2Ch2Ch24Ch24

Ch24Ch24 Ch1Ch1 FF Ch24Ch24 Ch2Ch2 Ch1Ch1 FF

Packet Switching Network

CES

Ch24Ch24 Ch2Ch2 Ch1Ch1 FF Ch24Ch24 Ch1Ch1 FF Ch24Ch24 Ch2Ch2 Ch1Ch1 FF Header Header


Ch24Ch24 Ch1Ch1 FF Ch24Ch24 Ch2Ch2 Ch1Ch1 FF

TDM Network

CES (SAToP / CESoPSN)

Ch24Ch24 Ch2Ch2 Ch1Ch1 FF


Ch24Ch24 Ch2Ch2 Ch24Ch24 Ch2Ch2

Header Header

Ch24Ch24 Ch2Ch2 Ch1Ch1 Ch24Ch24 Ch2Ch2 Ch1Ch1

CESoP

Ch24Ch24 Ch2Ch2 Ch1Ch1 FF


Ch24Ch24 Ch2Ch2 Ch24Ch24 Ch2Ch2

Header Header

Ch24Ch24 Ch2Ch2 Ch1Ch1 Ch24Ch24 Ch2Ch2 Ch1Ch1

CES

T1 Payload Packet Header

Packet Switching NetworkTDM Network

SAToP (RFC4553 )- Structure-Agnostic Time Division Multiplexing (TDM)over Packet (SAToP)

- Unstructured Frame Level Packetizing

draft-ietf-pwe3-cesopsn- Structure-aware TDM Circuit Emulation Service over Packet Switched Network (CESoPSN)

- structured NxDS0 Level Packetizing (Packet Level TDM Cross Connect)

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5. Synchronization over Packet Switched Network

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Synchronization over Packet Switched Network

Slipping Synchronization in wide area mobile backhaulSync. Performance must meet 50 ppb of 3GPP specification even under various jitter conditions for 2G/3G services.

RNC

BTS

Node-B/ BTS

PRC

E1 PDH TDM Backhaul(Sync Network)

Clock Distribution

RNC

BTS

Node-B/ BTS

PRC

E1 PDH Packet Backhaul(Async Network)

NEC Confidential

Clock & Data (recovered from

PWE/RTP packet)

Clock/Timing Recovery(1)The following synchronization methods are supported on the CX2600 series.

Data

BackhaulBackhaul

Clock & Data

T1/ STM-1 CX2600/220CX2600/220

E1 Clock and Data

Clock (within RTP Header)

T1/E1 Data (PWE/CES)

CESoP

CX2600/220FE / GbE

CESoP

Timing Recovery with Legacy TDM clock recovery from line TDM data (Legacy Clock synchronization technique)

Timing Recovery with RTP(PWE/CES)Clock and data use the same packet connectionRTP(Real-time Transport Protocol IETF RFC3551): using sequence number and timestamp information, RTP offers framework that packet receiver can recover clock and timing of the source.

BackhaulBackhaul

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Clock Synchronization

CX2K offers several types of CX2K offers several types of Clock synchronization functionClock synchronization function

PRC Clock

Adaptive Clock (RTP,IEEE1588v2)

End-to-End solution

Edge-to-Edge (Link-level) solution

Pseudo Wire Emulation

(Async)Sync Ethernet Sync Ethernet

PRC Clock

PRC: Primary Reference Clock

PRC

RNC

Node-B Packet Ring

STM-1E1

ETH (over SDH)ETH

ETH

Hotspot

Node-B

CX2200

CX2600

SAToP / CESoPSN sequence number based suitable for TDMoPIEEE1588v2 (Standard Precision Time Protocol) suitable for ATMoPITU-T G.8261 Synchronous Ethernet > suitable for both TMDoP and ATMoPClock recovery from PDH physical port > considering E1

NEC provides 3GPP defined clock quality with CX2K throughout the network with Adaptive Clock.

Slipping Synchronization in wide area mobile backhaulSync. Performance must meet 50 ppb of 3GPP specification even under various jitter conditions for 2G/3G services

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6. Ethernet OAM

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Ethernet OAM

Fault ManagementCC (Continuity Check)LB (Loop Back) It corresponds to ping in IP.LT (Link Trace)

It corresponds to trace route in IP.

Performance MonitoringLM (Frame Loss Management)DM (Frame Delay Management)

To maintain the service availability and quality for the packet network, powerful OAM toolset is required. To maintain the service availability and quality for the packet network, powerful OAM toolset is required.

CX2K provide Fault management and Performance monitoring by Ethernet OAM (ITU-T Y.1731 and IEEE 802.1ag).

BTS/Node-B BSC/RNCOperator A Operator B

Provider X

CC

LB

LT

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CX2K Application

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A typical transmission network image

Access Network

Regional Backhaul

Core / Backbone Network

BTS/Node-B

RNC/BSCBTS/Node-B

MSC

GMSC

SGSN

GGSN

MobileBackhaul

BTS/Node-B

RNC / BSC

MSC/GMSCConsidering Globes network, CX2K will give more

value within the MW radio network

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Packet Radio Solution (CX2200 + Pasolink)

MW Ethernet Radio

Pasolink

CX2200

1U

1U

IDUIDU

NEC Confidential

Difference between w/o CX2200 and w/CX2200Pasolink + CX2200

IDUIDU

Pasolink with FE

IDUFE

IDUFE

zz QoSQoS (SLA)(SLA)

zz OAM (OPEX)OAM (OPEX)

zz ReliabilityReliability

The priority traffic control is managed by 4 level priority class.

The priority traffic control is managed by 4 level priority class.

Maintainability and administration and performance monitoring on Radio is provided.

Maintainability and administration and performance monitoring on Radio is provided.

High reliability and bundling on Radio links is provided. ( 1+1 redundancy )

High reliability and bundling on Radio links is provided.( 1+1 redundancy )

As for low priority traffic (ex. Data), minimum bandwidth is guaranteed by minimum guarantee and maximum limitation per class.

As for low priority traffic (ex. Data), minimum bandwidth is guaranteed by minimum guarantee and maximum limitation per class.

SDH-like maintainability and administration on Ethernet can be provided by Ethernet OAM.

SDH-like maintainability and administration on Ethernet can be provided by Ethernet OAM.

High reliability on Ethernet is provided by various redundant protocols. ( Spanning Tree Protocol, Link Aggregation*, Ethernet APS, Ethernet Ring Protocol )

High reliability on Ethernet is provided by various redundant protocols. ( Spanning Tree Protocol, Link Aggregation*, Ethernet APS, Ethernet Ring Protocol )

Deliveringmore delicate

SLA !

OPEX Improvementon Ethernet !

ReliabilityUp!!

Pasolink Pasolink Pasolink Pasolink

CX2200 CX2200

InInadditionaddition

* Connection of CX and Paso is excluded .

E1

CX2200

PWE

Aggre

MUX

Pasolink

ETHETH

E1

SW

NEC Confidential

MW Radio System Migration Scenario (2G/3G-->2G/3G/HSPA)

PASOLINK PASOLINK

IMAGroup

IMAGroup

E1(IMA) E1(IMA)

E1(TDM)

2G

3G

E1(TDM)

E1(IMA) E1(IMA)

[ 2G/3G ]

[ 2G/3G/HSPA ]

PASOLINK

CX2200

PASOLINK

E1(IMA) E1(IMA)CX2200

E1(TDM)

2G

3G

E1(TDM)

IMAGroup

3G IMAGroup

E1(IMA)

E1(TDM) E1(TDM)

E1(IMA)

NEC Confidential

MW Radio System Migration Scenario (with Offload)

TDM SW PacketS

W

[ 2G/3G/HSPA ]

TrafficSeparation:

Voice (Critical Traffic)

Data(Best Effort)

PASOLINK

CX2200

PASOLINK

E1(IMA)

STM-1(ATM)

CX2200

E1(TDM)

2G

3G

E1(TDM)

IMAGroup

3G

E1(IMA)E1(IMA)

E1(TDM) E1(TDM)

E1(IMA)

Packet Network

E1(TDM) E1(TDM)

E1(IMA) E1(IMA)

FE/GbE

NEC Confidential

Typical Configuration with Pasolink

CX2200CX2200 1U

16xE1/T1 TDM

8xFE

2x GbE

BB Service(GbE x2, FE x6)

E1(IMA) x 12 E1(TDM) x 2E1(IMA) x 12GbE x 2FE x 6

E1(TDM) x 1FE x 2

E1(TDM) x 2

PASOLINK PASOLINK

E1(IMA) x 4CX2200

E1(TDM) x 22G

3G

IMAGroup

3G

FE x 2

E1(TDM) x 1E1(TDM) x 1

FE x 2

3G

E1(IMA) x 4

E1(IMA) x 4

GbE x 2

FE x 6

NEC Confidential

Typical Configuration with Pasolink

CX2200CX2200 1U

16xE1/T1 TDM

8xFE

2x GbE

BB Service(FE x6)

E1(IMA) x 12 E1(TDM) x 2E1(IMA) x 12GbE x 2FE x 6

GE x 2

E1(TDM) x 2

PASOLINK PASOLINK

E1(IMA) x 4CX2200

E1(TDM) x 22G

3G

IMAGroup

3G

GbE x 1 GbE x 1

3G

E1(IMA) x 4

E1(IMA) x 4

FE x 6

NEC Confidential

Conclusion

CX2K is a cost-effective solution for backhauling aggregated 2G/3G/HSDPA/Wimax and Future IP trafficCX2K is future-proof to handle current and future services of GlobeCX2K is the best Mobile Backhaul Solution as it provides All-in-One support

NEC Confidential

Reference Information

NEC Confidential

CX2200 is a flexible and compact gateway that consolidates 2G (TDM), 3G (ATM), 3.5G (IP), Wimax (IP), DSL (IP), WiFi (IP) and others traffic, into any kind of network.

Pseudo Wire Emulation supportSAToP (RFC4553)CESoPSN (draft-ietf-pwe3-cesopsn)ATM over Packet (RFC4717)Clock Synchronization (RTP, IEEE1588v2 PTP)

Hybrid SwitchingEthernet SwitchingDS0 Level TDM Cross Connect

Ethernet OAM & ProtectionOAM (Y.1731/802.1ag)Linear Protection (G.8031)Ring Protection (G.8032)

QoS functionPacket Policer / ShaperATM Shaper

MPLS functionLDP / RSVP-TE / OSPF-TE (roadmap)

Integrated8 x FE

Downlink Card16 x T1/E1 (TDM / ATM IMA)16 x T1/E1 (TDM)8 x T1/E1 (TDM)1 x STM-1 (ATM)

Uplink Card2 x GbE (2 ports)4 x SHDSL8 x T1/E1 (ETH over PDH)2 x STM-1 (ETH over SDH)

NEXT GENERATION BACKHAUL AGGREGATOR

CX2200 overview

NEC Confidential

440mm

44mm

2 DC Power Connector

Power Switch

RS-232CLocal Craft Interface

Management ETH Interface

240mm

Down-Link Card

16xE1/T1 TDM/ATM

8xE1/T1 TDM

16xE1/T1 TDM

1x STM-1 ATM

2x GbE

8x E1/T1 ETHoPDH

4x SHDSL

2x STM-1 ETHoSDH

Up-Link Card

CPU-Packet Switch Card with8x FE

Basic

Enhanced (MPLSSupport)

Fan module

CX2200 shelf and interfaces

NEC Confidential

CX2600 series is a scalable and high performance aggregation solution focused on medium and high traffic sites. CX2600 series manages dense and complex multi- technology network interconnection through a complete set of interfaces.

CX2600 series overview

CX2600220

CX2600210

CX2600202

Interfaces Lines Maximum # of Line Inetrfaces

10/100BASE-TX (8p) 4 4 2

100BASE-FX (8p) 4 4 2

1000BASET/X (1p) 12 6 2

1000BASE-PX (1p) 12 6 2

1000BASE-T (8p) 12 6 2

1000BASE-X (8p) 12 6 2

TDM T1/E1 (8p) 12 6 2

TDM STM-1 (1p) 12 6 2

ATM T1/E1 (8p) 12 6 2

ATM STM-1/OC-3c (1p) 12 6 2

CX2600/220

CX2600/210

CX2600/202

Advanced Traffic AggregationPacket-based QoS with full bandwidth control (maximum rate limitation, minimum rate guarantee and fair bandwidth sharing, based on the per-flow metering)ATM aggregation (internal packet mechanism)IP, ATM and PDH traffic aggregation

Hybrid Packet/TDM Switching24Gbps Packet switching (25kbps granularity) and 2Gbps TDM cross-connect (64kbps granularity) fully integrated into a single card.

Pseudo Wire EmulationTDM (SAToP, CEoPSN) and ATM (ATMoP) Emulation over IP/MPLS/EthernetClock Synchronization (RTP, IEEE1588v2 PTP)MPLS signaling (LDP extension)

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Intelligent QoS for EthernetElaborate bandwidth control with per- flow metering (maximum limitation, minimum guarantee and fair sharing for each VLAN and class, broadcast/multicast rate limitation)CoS Mapping and Internal Class MappingEnhanced discard algorithm (UPC- RED) for improving TCP throughput on the overload condition

Advanced VLAN features802.1Q VLAN, 802.1ad(Extended VLAN) and VLAN-tag swapping Port isolation within VLANJumbo Frame for VLAN-tag stacking

Supporting IPv6Classification and CoS mapping based on IPv6 Traffic Class headerMulticasting with MLD snooping

High Availability and ManageabilityHitless switchover for common functional modules (CPU/Switch card and Power Supply)GbE 1:1 Protection, 802.3ad LAG and STM-1 1:1 APS for the link/trail protection802.1D/w Spanning Tree Protocol for the network restorationOAM Fault Management for Ethernet and ATM/SDHPer-flow Traffic Metering (SNMP Private MIB)VLAN Reachability and Loop Detection

Fault ManagementCC (Continuity Check)LB (Loop Back)LT (Link Trace)

Performance MonitoringDM (Delay and jitter Management)

CX2600 series overview

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TDM function

DS0 Level Native TDM Cross Connect (multiplexing)

E1/T1TDM

E1/T1TDM

E1/T1TDM

idle timeslot exclusion

E1/T1TDM

E1/T1TDM TDM -> CES

CES (SAToP / CESoPSN)

SAToP/CESoPSN

T1/E1

ETH

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E1 / T1 mode and impedance (75/100/120 ohm) Per module basis mode configuration

Framing mode can be specified per port basis- E1 Framing: basic G.704, CRC-4 multiframe, CRC-4 multiframe without CAS,

unstructured- T1 Framing: SF(D4), ESF

TDM / ATM mode Per port basis mode configuration

ex) Port 1-3,10: TDM mode Port 4-9, 11-16: ATM mode

E1/T1 Port Specification

CX2200/100 offers a flexible E1/T1 ports configuration

TDM port

TDM Cross connect modeCES mode (per module basis

configuration)- SAToP- CESoPSN

ATM port

IMA / non-IMAUp to 8 IMA groups per equipment

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ATM function

ATM 2 ATM (ATM Aggregation)

E1/T1ATM

E1/T1ATM

E1/T1ATM

ATM Aggregation

E1/T1TDM

E1/T1TDM ATM -> ATM over

Packet

ATM over Packet

E: Ethernet (MAC Header)PT: Packet Transport

- VLAN- UDP/IP- MPLS

PW: Pseudo Wire Control Word

ETH

PWATM EPT

STM-1

Up to 256 PVC Both VP connection and VC connection are supported

STM-1

or

STM-1

or

NEC Confidential

Ethernet / VLAN function

Up to 256 VLAN (1-4094 VID) Port based VLAN, Tag based VLAN, IEEE 802.1ad (Provider

Bridges) IPv4 ToS/ IPv6 Traffic Class -> VLAN CoS mapping MAC Leaning: up to 16K, VLAN ID plus MAC SA based

LearningLayer 2 Switching

ETHVLAN

ETHVLAN

ETHVLAN

NEC Confidential

NEC Confidential

Memo

How CX2600 and CX2200 (CX2K) workAgendaCX2K OverviewCX2200 / CX2600 OverviewMobile Backhaul cost-effective solution by using CX2KCX2K Functionalities 1. How is Optimization being done?Multiplexing & Aggregation Schemes for TDMMultiplexing & Aggregation Schemes for ATMMultiplexing & Aggregation Schemes for IP backhaulApplication for the existing PDH/SDH networkCX2Ks Ethernet over SDH featureCX2Ks Ethernet over PDH feature2. How is Data Offloading being done?CX2K Multi-service switching DiagramTraffic SeparationClassification and Separation Schemes3. QoS Function 18Fare Rate sharing and Bandwidth controlQoS Mechanism (1) OverviewQoS Mechanism (2) Class MappingQoS Mechanism (3) Policer4. Pseudo Wire Emulation FunctionPseudo Wire Emulation 255. Synchronization over Packet Switched Network 27 28Clock Synchronization6. Ethernet OAMEthernet OAMCX2K ApplicationA typical transmission network image 34 35 36 37 38 39ConclusionReference InformationCX2200 overviewCX2200 shelf and interfacesCX2600 series overviewCX2600 series overview 46 47 48 49 50Memo

Documents

How does CX2K work.pdf