Introduction to CNGI-6IX Tsinghua Univ./CERENET

Outline 1.Background 2.Topology 3.Equipment 4.Addressing and Routing 5.Services 6.Traffic 7.Problems

1. Background CNGI-6IX –China Next Generation Internet Exchange Center –Started to provide service in the end of 2005 –Location Beijing (Tsinghua University) Hong Kong (Mega-iAdvantage)

CNGI demonstration networks

2. Topology

Participants CNGI participants –CERNET2 (AS23910) –China Telecom (AS4134) –China Unicom (AS9800) –China Netcom (AS18344) –China Mobile (AS24311) –China Tailcom (AS24425)

Domestic peers CERNET (AS4538) NSFCNet (AS9406) CJ-IPv6 (AS23912) Google-China (AS24424) …

External peers TEIN2-North (AS24489) APAN-JP (AS7660) KREONet2 (AS17579) HK-IX2 (AS4635) CUHK (AS3661) Google (AS15169) Cable & Wireless (AS1273) Hurricane (AS6939) …

3. Equipment Beijing –6 CNGI participants’ edge routers –2 CNGI-6IX core routers –2 CNGI-6IX core switches Hong Kong –1 CNGI-6IX core router

Equipments (Beijing)

CNGI participants’ edge router –CERNET2: Juniper T640 –China Telecom: Huawei NE80E –China Unicom: Juniper T320 –China Netcom: Juniper T640 –China Mobile: Huawei NE80E –China Tailcom: Huawei NE5000E

Equipments (Beijing) CNGI-6IX core router –Cisco CRS-16 –Juniper T640 CNGI-6IX core switch –Cisco 7609 –Force10 E600

Equipments (Hong Kong) CNGI-6IX core router –Cisco GSR

4. Addressing and Routing IPv6 block –2001:252::/32 –2001:7fa:5::/48 (obsolete) IPv4 block – /24 Just for MPLS/L2VPN service provisioning

Policy Principle of IPv6 peering policy –Open to receive all the IPv6 prefixes from CNGI participants and external peers –Conservative to advertise IPv6 prefixes based on agreed peering policy No transit service for external peers –Community-based

Community List CNGI participant –CERNET2:23911:23910 –China Telecom: 23911:4134 –China Unicom: 23911:9800 –China Netcom: 23911:18344 –China Mobile: 23911:24311 –China Tailcom: 23911:24425

Community List Domestic peer –CERNET:23911:4538 –NSFCNet:23911:9406 –CJ-IPv6:23911:23912 –Google-China:23911:24424

Community List External peers –TEIN2-North:23911:24489 –APAN-JP:23911:7660 –KREONet2:23911:17579 –HK-IX2:23911:4635 –CUHK:23911:3661 –Google:23911:15169 –Cable & Wireless:23911:1273 –Hurricane:23911:6939

5. Service Primary service –IPv6 exchange center CNGI participants Domestic peers –R&E –Commercial External peers –R&E –Commercial Advanced service –IPv6 Multicast –MPLS/L2VPN (IPv4-based)

6. Traffic Total traffic of CNGI participants and domestic peers (since Jan 1, 2008)

Traffic Total traffic of CNGI external peers (since Jan 1, 2008)

7. Problems IPv6 flow analysis (netflow v9) –Some equipments can’t support netflow-based IPv6 flow data collecting/exporting IPv6 prefix length filtering –Quite a number of organizations have applied small IPv6 block (/36-/48), which should not be globally routable according to certain historical document. –Should we accept such IPv6 prefixes from external peers? IPv6 R&E routes vs. IPv6 commercial routes –How to distinguish IPv6 R&E routes from IPv6 commercial routes?