nanog mailing list archives
Re: Comcast's 6to4 Relays
From: Geoff Huston <gih () apnic net>
Date: Wed, 20 Apr 2011 21:25:01 +1000
On 20/04/2011, at 11:43 AM, Martin Millnert wrote:
Either way, there certainly IS a place in networks for Toredo services, since SO MANY devices for the CPE end of the connectivity equation still have zero support for IPv6.
If you are prepared to tolerate a connection failure rate in the order of 37% or so, then I could agree with you, but that's a pretty impressive failure rate!
I must point you to Geoff Hustons most recent ISP posting: http://www.potaroo.net/ispcol/2011-04/teredo.html
...
And there are some situations where it is OK that only 2 out of 3 connections succeed, if it means your system can work better: Notably, peer-to-peer applications can make use of this to establish connections in a cloud, using DHT instead of DNS for peer propagation, and Teredo relays as the rendezvous mechanism.
In my opinion any service that runs at a 37% failure rate of connections is a disservice. The peer-to-peer folk can tolerate its miserable reliability and lousy performance because of the massive redundancy in the peer-to-peer environment that means that that a peer-to-peer player can just ignore the connections that fail. But do we need to head to use applications that build in huge margins of oversupply in their communications model just to tolerate the unreliability of Teredo? Geoff
Current thread:
- Comcast's 6to4 Relays Brzozowski, John (Apr 19)
- Re: Comcast's 6to4 Relays Doug Barton (Apr 19)
- Re: Comcast's 6to4 Relays Jared Mauch (Apr 19)
- Re: Comcast's 6to4 Relays Mikael Abrahamsson (Apr 19)
- Re: Comcast's 6to4 Relays Cameron Byrne (Apr 19)
- Re: Comcast's 6to4 Relays Butch Evans (Apr 19)
- Re: Comcast's 6to4 Relays Martin Millnert (Apr 19)
- Re: Comcast's 6to4 Relays Geoff Huston (Apr 20)
- Re: Comcast's 6to4 Relays Fred Baker (Apr 19)
- CIsco IOS bug info request Eric Parsonage (Apr 20)
- RE: CIsco IOS bug info request Erik Bais (Apr 20)
- Re: CIsco IOS bug info request Ingo Flaschberger (Apr 20)
- Re: CIsco IOS bug info request Randy Bush (Apr 20)
- Re: Comcast's 6to4 Relays Doug Barton (Apr 19)
- Re: Comcast's 6to4 Relays Brzozowski, John (Apr 20)
- Re: Comcast's 6to4 Relays Doug Barton (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)
- Re: Comcast's 6to4 Relays Steven Bellovin (Apr 20)
- Re: Comcast's 6to4 Relays Owen DeLong (Apr 20)