[address-policy-wg] PI for Not-DNS Anycast.

On Wed, 13 Jun 2007, Sander Steffann wrote:

> Can you give more details of how this works with anycast? I am 
> interested in examples of non-DNS anycast applications. In the past 
> there have been questions about which protocols/applications other than 
> DNS can benefit from anycasting, and you seem to be the first with a 
> concrete example.

IRC uses a single TCP session and several IRC networks have deployed 
anycast as a way to limit amount of clients that can potentially ddos a 
single server. It seems to routing subsystem is stable enough for most 
users that even long lived TCP sessions as IRC (that might be up for 
weeks) work well with anycast.

It works best with regionally limited announcements though, as these tend 
to be more stable (direct peering relationships between ISPs).

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se