Wednesday, October 27, 2010

Cogent (AS174) does not have a full ipv6 table yet

As of date Cogent (AS174) still has not entered into a peering agreement with Hurricane Electric (AS6939), resulting in significantly less prefixes than most IPv6 transit providers will give you. I've compiled a list of prefixes that are missing in Cogent's table.

Most IPv6 transit providers will give you roughly 3500 prefixes, but Cogent only carries around 2500 prefixes.

If you want to be reachable from all over the world over IPv6, it's best to get a second and third IPv6 transit provider that give you a full IPv6 routing table. In other words, avoid having a Cogent-only network.

txt file: ipv6-prefixes-that-cogent-misses-as-of-27-Oct-2010.txt

2 comments:

mcr said...

I've opened a ticket with cogent to complain to them about this.
They think that a partial routing table is "business as normal".
I now have a tunnel to he.net.
I am not impressed.

Donn Lee said...

Sadly, I'm not surprised by this finding. Bad cogent.