I'm trying to decide which IGP I want to go with for our IPv6 deployment. Anyone have any experiences with OSPF for IPv6 in the IOS 12.3 mainline? Is it stable enough?
I'm contemplating iBGP over OSPF..
We're using both OSPFv3 and ISIS (in different parts of the
network) for a v6 IGP.
We've used the mainline based code a few times and it seems
to work ok in 12.3.
We've since moved to 12.2S on those devices.
- jared
ISC uses IS-IS for both v4 and v6 in its home network (3557). Most of the ciscos there are running 12.2S, but there's one running 12.3T.
We also use OSPF in our F root nameserver clusters as part of our usual load distribution strategy (ciscos running 12.2S, with adjacencies to FreeBSD nameservers running Zebra).
http://www.isc.org/pubs/tn/isc-tn-2003-1.html
We have not yet encountered any v6-specific problems with either of these.
Joe
I'm trying to decide which IGP I want to go with for our IPv6 deployment. Anyone have any experiences with OSPF for IPv6 in the IOS 12.3 mainline? Is it stable enough?
I can't tell you anything about the stability in a production environment, but I haven't seen any problems in test setups.
You may want to consider some form of IS-IS (integrated or multi-topology). OSPFv3 and IPv6 support for IS-IS seem to have entered IOS at roughly the same time, so in the absense of more specific information, there is no reason to presume that one is more mature than the other.
I'm contemplating iBGP over OSPF..
Why not give Cisco the chance to screw up OSPFv3 first? 
We use OSPFv3 on our backbone (OSPFv2 for IPv4, separate routing
processes but largely identical metric/timeout configuration) using
mostly 12.2(17d)SXB on Catalyst 6500/7600 OSRs and various 12.3T
(pre-)releases on 7200/7500. Works fine.