0 HKIX Hong Kong Internet eXchange Cheng, Che-Hoo Computer Services Center The Chinese University of Hong Kong

29-Jan-1997CSC, CUHK1 Introduction l Set up by CSC of CUHK in Apr 95 l Mainly for intra-Hongkong traffic l Serve ISPs only l 32 ISPs connected now l 12-13Mbps (5-min) peak l Everybody gains benefits but arguments and politics are inevitable.

29-Jan-1997CSC, CUHK2 Technical Aspects of HKIX l CUHK provides space (open racks), electricity, air- conditioning and manpower for coordination and operations. l Ethernet coax initialy l Upgraded to Ethernet switch in Dec 95 l Use BGP4 l Mandatory multilateral peering agreement (MLPA) l Use Cisco 2501 as route server/route reflector l Routing information distribution controlled by IP network address or Origin AS access lists in the route server l Minimum speed: T1 l Two T3 links now

Schematic Diagram of HKIX (Phase II) Jun 96 CSC/ITSU, The Chinese University of Hong Kong © Overseas Hong Kong CUHK IAP A IAP B IAP C IAP D Route Server Router Ethernet Switch T1/E1 T3 10Mbps 100Mbps 10Mbps Internet

29-Jan-1997CSC, CUHK4 Success of HKIX l Operated by a relatively neutral and non-profit party so little competition seen by participants l Free-of-charge service l Low set-up cost and simple configuration l MLPA and no settlement (Free to set up bilateral agreements among participants) l Everyone is equal; No discrimination l ISPs’ Need of highly efficient network infrastructure l Enthusiasm of CSCstaff

Intra-AP Internet Traffic Via HKIX Jun 96 CSC/ITSU, The Chinese University of Hong Kong © Global Internet IAP in JP IAP A in HK IAP B in HK Hight Speed Local Link HKIX IPL

29-Jan-1997CSC, CUHK6 Possible Future of HKIX l More connection options (e.g. ATM and FDDI) l More choices of carriers l More FM and colocation services l More intra-AP traffic l Multicast over HKIX? l IPV6? l Charging to cover cost