introduction to cngi-6ix
DESCRIPTION
Introduction to CNGI-6IX. Tsinghua Univ./CERENET 2008-10-21. Outline. Background Topology Equipment Addressing and Routing Services Traffic Problems. 1. Background. CNGI-6IX China Next Generation Internet Exchange Center Started to provide service in the end of 2005 Location - PowerPoint PPT PresentationTRANSCRIPT
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Introduction to CNGI-6IX
Tsinghua Univ./CERENET
2008-10-21
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Outline
1. Background
2. Topology
3. Equipment
4. Addressing and Routing
5. Services
6. Traffic
7. Problems
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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)
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CNGI demonstration networks
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2. Topology
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Participants
• CNGI participants– CERNET2 (AS23910)– China Telecom (AS4134)– China Unicom (AS9800)– China Netcom (AS18344)– China Mobile (AS24311)– China Tailcom (AS24425)
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Domestic peers
• CERNET (AS4538)
• NSFCNet (AS9406)
• CJ-IPv6 (AS23912)
• Google-China (AS24424)
• …
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External peers
• TEIN2-North (AS24489)• APAN-JP (AS7660)• KREONet2 (AS17579)• HK-IX2 (AS4635)• CUHK (AS3661)• Google (AS15169)• Cable & Wireless (AS1273)• Hurricane (AS6939)• …
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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
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Equipments (Beijing)
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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
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Equipments (Beijing)
• CNGI-6IX core router– Cisco CRS-16– Juniper T640
• CNGI-6IX core switch– Cisco 7609– Force10 E600
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Equipments (Hong Kong)
• CNGI-6IX core router– Cisco GSR-
12410
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4. Addressing and Routing
• IPv6 block– 2001:252::/32– 2001:7fa:5::/48 (obsolete)
• IPv4 block– 210.25.189.0/24
• Just for MPLS/L2VPN service provisioning
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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
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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
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Community List
• Domestic peer– CERNET: 23911:4538– NSFCNet: 23911:9406– CJ-IPv6: 23911:23912– Google-China: 23911:24424
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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
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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)
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6. Traffic
• Total traffic of CNGI participants and domestic peers (since Jan 1, 2008)
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Traffic
• Total traffic of CNGI external peers (since Jan 1, 2008)
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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?