Migration path from CERNET to CERNET2

1. Migration path fromCERNET to CERNET2

2. 国际下一代互联网 城域网 城域网 国际交换中心1 国际交换中心2 核心网 接入网/CPN 接入网/CPN 接入网/CPN GigaPoP GigaPoP GigaPoP 主干网1 主干网N GigaPoP GigaPoP GigaPoP GigaPoP 主干网2 GigaPoP GigaPoP 接入网/CPN 接入网/CPN Backbone structure of CNGI

3. other CNGI backbone International Next Generation Research Networks IX NOC CERNET2 backbone Gigapop Gigapop Access Network End network End network End network End network structure of CERNET2

4. GE GE 10GE CWDM tunnel IPv4 user network CWDM GE GE IPv4 User network CERNET2 IPv6 backbone CERNET IPv4 backbone IPv6 user network IPv6 user network IPv6 user network User network tunnel

5. DNS FTP WWW TELNET Streaming BBS NTP “GO” game And others Application available for v6

6. Pro & Con • High bandwidth – we do this way at this stage • QoS - • Security – Source address authorization • E2E – no NAT hopefully • Connectivity to v4 world - yes • More applications – still need time to prove • Free of charge - no • User number growth rate – we will see