Relationships Between Networks

Relationships Between Networks A Global Perspective Berlin, June 7, 2001 Dr. Mathew P. Dovens Cable & Wireless

Agenda 1. Internet Globalization Cable & Wireless 2. Peering History,concept, strategy, mechanism 3. Example: Euro Networks Peering local, regional, global 4. Peering Policies US, global 5. Summary, Q&A

Growth Rates 14,000 12,000 CAGR 1996-2005 Terabytes/Day 10,000 8,000 6,000 Internet Traffic 96% 4,000 Data Traffic 30% 2,000 Circuit 0 Switched 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 12% Circuit Switched Voice & Internet T raffic F orecas t Worldwide (1996-2005) S ource: R enaissance Consulting

Everything over IP and IP over everything

Market Reaction C&W has undergone a radical trans formation and we believe it is better pos itioned to deliver than ever before. Credit Suisse First Boston, Aug 00 C&W is res tructured and one of the few fully funded E uropean telecom operators and is s et to compete a 's ingle AS number', global IP network by the end of 2001, enabling the s tronges t quality of IP services." Morgan S tanley, Aug 00 The stage is set for the greatest transformation story in E uropean telecoms. T hese days nobody has any doubts about what Cable & Wireles s is for." T he E conomis t, S ept 00

Peering

Backbones connect to each other: they PEER %DFNERQH 1HWZRUN %DFNERQH 1HWZRUN %DFNERQH 1HWZRUN %DFNERQH 1HWZRUN

Route Announcements %DFNERQH 1HWZRUN %DFNERQH 1HWZRUN Networks announce routes to one another Peers announce only their own address space Peers only accept traffic destined for themselves

MCI Backbone 1995 45 Mbps DS-3 6( - 6& 0 +$ '1 < -,' & &+ :6 '1 7 3 * 125 :25 :71 1< 8 /& $ 57 2 '0 3 $6 7 *1 - +6 1 DS3 Link Single Core POP 32 % Dual Core POP

n*oc-192c backbones

Direct and Public Peering in the US ISPs ISPs ISPs ISP MAE West Ameritech NAP MAE East ISP Direct Peers n x DS3 and/or n x OC-3c and/or n x OC-12c ISP n x DS3 and/or n x OC-3c and/or n x OC-12c PacBell NAP nxds3 + OC-12c &DEOH :LUHOHVV %DFNERQH nxds3 PAIX nxds3 + OC-12c OC-12c Sprint NAP nxds3 + OC-12c nxds3 C&W Customers ISPs ISPs ISPs

US Internet Industry Structure Tier One C&W, Worldcom/UUNET, Sprint, GC National Backbone Providers Tier Two Regional Providers Tier Three Local ISP s Over 4000 Providers in the US

Global Peering Global IS P GC Global IS P AS 3561 One AS R egional IS P EUNet R egional IS P Ebone R egional IS P CWE Natl IS P Natl IS P Natl IS P Natl IS P ECRC Natl IS P CWC

Peering Strategy Use Groups of Routes Community strings can be announced selectively Easy to implement Vendor independent Provide value for value Similar geographical coverage Similar position in the marketplace Similar mutual benefit

Paradigm Change To Peer Or Not To Peer turns into: - Peer with whom? - Peer at which locations? - Peer with which routes? Peering can, once again, be a mutually beneficial relationship of equals

Reality Check: Cable & Wireless European Networks

Global IP Node Rollout 2000/01 84 new network nodes 200 European POPs 18 Web hosting centers with over 1,000,000 sq.ft.

(XURSHDQ,QWHJUDWLRQ

Current European Peering Cable & Wireless 16 Euro ISPs have: - > 325 peering relationships - > 1200 logical peering connections Few or no rules Few documented relationships LINX Peering Agreement is standard Peering in many locations

MIX/Milan Copenhagen Paris DE-CIX Frankfurt The Vienna Internet exchange (VIX) Euro Exchange Points NAP Nautilus Rome M-CIX Munich SIX Bern/Zurich PIX/Lisbon ESPANIX Madrid Paris Munich MAE Paris/Frankfurt Norwegian Internet exchange FICIX Amsterdam BNIX Brussels 7HOHKRXVH,QWHUQHW ([FKDQJH7,; Zurich Finnish Commercial Internet Exchange London LoNAP London Geneva D-GIX Stockholm

Peering Policies

C&W US Peering Policy Highlights of Requirements Redundant US national OC-48c backbone Consistent route announcements Nodes in 9 geographic areas Do not announce third party routes Have presence at 4 NAPs of at least DS-3 Minimum 20 Mbps average traffic 24x7 NOC Traffic imbalance 2 : 1 or less Full CIDR routes, BGP-4, aggregate, no default Register routes & policy with IRR Must nor receive this peers route announcements from third party KWWSZZZFZFRPXVSHHULQJ

Summary Relationships of equals Global, Regional, National Community strings enable us to do so Multi-Billion Network Investment Global network, single AS n*lambda: US, Europe, Japan Peering Strategy Similar investments and scope Similar mutual benefit Relationships of equals

Questions?