EthioTelecom IP NGN Network

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Course Objectives

• Getting familiar with the topology of IPNGN network• Explain the function of devices in the network • Explain the implementation of services

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Course Contents

• Chapter I IP NGN Overview

• EthoTelecom Backbone Network

• Logical Topology of IPNGN Network

• Network Topology of Dessie Site

Internal Use Only▲

<Confidential and Proprietary Information of ZTE CORPORATION>

For Internal Use Only▲

<Confidential and Proprietary Information of ZTE Corporation ><Confidential and Proprietary Information of ZTE CORPORATION>

Internal Use Only▲

Course Contents

• Chapter I IP NGN Overview

• EthoTelecom Backbone Network

• Logical Topology of IPNGN Network

• Network Topology of Dessie Site

Internal Use Only▲

<Confidential and Proprietary Information of ZTE CORPORATION>

Logical Topology Of IP NGN network

For Internal Use Only▲

<Confidential and Proprietary Information of ZTE Corporation ><Confidential and Proprietary Information of ZTE CORPORATION>

Internal Use Only▲

Course Contents

• Chapter I IP NGN Overview

• EthoTelecom Backbone Network

• Logical Topology of IPNGN Network

• Network Topology of Dessie Site

Internal Use Only▲

<Confidential and Proprietary Information of ZTE CORPORATION>

Network Topology of Dessie Site

For Internal Use Only▲

<Confidential and Proprietary Information of ZTE Corporation ><Confidential and Proprietary Information of ZTE CORPORATION>

Internal Use Only▲

Course Contents

• Chapter II Basic Function of Devices • CS – Convergence Switches

• ER – Edge Router

• CR Routers – Core Router

• BR – Backbone Routers

• GER – General Excellent Router

• BRAS –

• RR – Route Reflector

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CS ( Convergence Switch)

The function of switch include:• Converge traffic from different services and route to the edge router

• Provide interface for different services

• Isolation of data for different services based on vlan

• Port level QOS

ZXR10 T240G/T160G/T64G/T40GMPLS 10G Routing SW

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ER ( Edge Router)

The function of ER include:• Serves as a gateway for different services

• VPN based Isolation of services

• Different policies related to each services are defined on the ER

• Services routes are advertised here

M6000 routers are used as ER routers

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CR ( Core Router)

The function of CR include:• Converge traffic from ER routers on a site

• Provide redundant link to the BR routers

M6000 routers are also used as CR routers

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BR ( Backbone Router)

The function of BR include:• Route inter site/regional traffic

• Provide redundant link to the CR routers with a mesh topology

• Advertize default route to ER routers for Data services

T8000 routers are used as BR routers

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GER ( General Excellent Router)

The function of GER include:• Provide NAT service for internet traffic

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BRAS ( Broad Band Access Server)

The function of BRAS include:• Serves as a gateway for IPoE and PPPOE users

• Isolate broadband users based on vlan and interface

• Allocate IP address for broadband users

10800E routers serve as bras in IP NGN network

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RR ( Route Reflector)

The function of RR include:• Reflect VPNV4 route to ER

M6000 routers are used as RR routers ?

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Service Deployment In IP NGN network

Services carried by IP NGN network:• GSM/ CDMA traffic

• Fixed line traffic

• Data/Internet traffic

All services are deployed as a separate VPN

MPBG used as routing protocol

MPLS switching provides routing through the

network

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Summary

Network Topology of IP NGN

The function of devices in IP NGN network

Service deployment in IP NGN network