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IP NETWORK

IP NETWORK. Prepared by IP O&M Section. TOPICS. Introduction IP Network Layers and their Functions IP Network Equipments Broadband Access Technologies. INTRODUCTION. What is IPNGN? Multi-Service Network Separated Planes Open Interfaces A packet Mode Technology Guaranteed QoS

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IP NETWORK

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  1. IP NETWORK Prepared by IP O&M Section

  2. TOPICS • Introduction • IP Network Layers and their Functions • IP Network Equipments • Broadband Access Technologies

  3. INTRODUCTION • What is IPNGN? • Multi-Service Network • Separated Planes • Open Interfaces • A packet Mode Technology • Guaranteed QoS • Supports generalized mobility

  4. INTRODUCTION Cont’d • Why NGN? • Fusion of services • Common network • IP in back bone • Split of different layers

  5. INTRODUCTION Cont’d • Ethio telecom’s IP Network is constructed in such a way that it can provide NGN (including GSM, Fixed NGN, CDMA, IP/Broadband Access Network services including Value Added Services) at regional cities, major cities, sub cities, and towns.

  6. IP NETWORK LAYERS & THEIR FUNCTIONS

  7. IP NETWORK LAYERS & THEIR FUNCTIONS Cont’d • Gateway layer/ deployed in 4 sites • Backbone layer/ deployed in 5 sites • Core layer/deployed in 17 sites • Edge layer/deployed in 25 sites, and • CS Layer/ deployed in 84 sites (75 cities)

  8. GATEWAY LAYER It contains Gateway Routers, Mainly functions to connect to an external network /internet/

  9. GATEWAY LAYER Cont’d

  10. GATEWAY LAYER Cont’d The Ethio Telecom has built extensively Ethiopia’s internet infrastructure to give better and quality internet service. Currently we have fifteen international internet links from Bole, BahirdarDiredawa and Shashemene gateways The Total Upstream /downstream bandwidth is 6475.5/6775.5 in Mbps

  11. GATEWAY LAYER Cont’d

  12. BACKBONE LAYER • Totally 10 sets of BR (T8000), distributed to five cities, • Each city deploys two sets of BR, full-meshed • connection, • This layer is mainly responsible for service traffic • forwarding and high capacity communication • facilities.

  13. SH AA DD BD MK BACKBONE LAYER Cont’d Equipment Protection Link Protection AddisAbaba Bahir Dar Shashemene Mekele Dire Dawa Fully Meshed Horizontal Connectivity with vertical redundancy

  14. CORE LAYER This layer is mainly responsible for service traffic forwarding, convergence and high capacity communication facilities.

  15. EDGE LAYER • Provides information exchange b/n the access and core network. • ProvidesIt is an entry point in to carrier/service provider core backbone networks. • Used for aggregation of core switches.

  16. EDGE LAYER Cont’d

  17. Three IP/MPLS Layers - 10Gbps

  18. ACCESS LAYER Access layer is where broadband access devices and ethio telecom’s other networks (GSM, CDMA, FL-NGN) are connected.

  19. NETWORK EQUIPMENTS • Routers: ZTE T8000,M6000-8,T1200, GER, BRAS • Switches: ZTE T160G and T64G • DSLAMs • MSAGs

  20. ZXR10 M6000-8 carrier class router • Switching Capacity: 1.92 Tbps • Weight: < 145 k g

  21. BROADBAND ACCESS TECHNOLOGIES • Broadband dial-up (PPPoE) and leased line (IPoE) services • ADSL2+ (up to 24Mbps) and VDSL2 (up to 250Mbps) services. • EPON – up to 1Gbps optical • GPON – up to 2.5Gbps optical

  22. ADSL2+ PPPOE Network Link and Traffic Flow BRAS BRAS Internet AAA Server IP-NGN Core BRAS • ADSL PPPOE Traffic Flow Procedure • Customer dials using the PPPOE protocol that includes customer account and password information. • BRAS accepts the customers’ dialup request, and then using the radius protocol, Synchronize the account/password and speed information from the AAA server, Authenticate. • If the account and password is correct, BRAS will assign a dynamic address to the customer. Customers get the internet access services through the PPPOE protocol and BRAS controls the speed of customer internet access. • If the account and password isn’t correct, BRAS Refuse the customer’s internet access request and disconnection link. Transmission MSAG ADSL2+ FL-NGN Access CC Copper TB Modem Customer

  23. ADSL2+ IPOE Network Link and Traffic Flow BRAS BRAS Internet IP-NGN Core BRAS • ADSL2+ IPOE Traffic Flow Procedure • Customer gateway is deployed on the BRAS; • Traffic goes to the BRAS then forwarded to the internet through IP NGN Network. • The speed of internet access limitation will be configured on the BRAS. Transmission MSAG ADSL2+ FL-NGN Access CC Copper TB Switch Customer

  24. Contacts of IP functional Maintenance Team Name Telephone No. Behailu Sisay 0911217654 Wondifraw Belachew 0911243521 Tigist Nigus 0911502522 Abebe Anjojo 0911500193 Abayneh Bahiru 0911504977 Aberra Gebre 0911503505

  25. THANKS!

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