On (2013-01-22 07:59 -0700), John Neiberger wrote: > But thinking about that, it once again makes me wonder why we are > redistributing the default into ISIS. If the default already exists in iBGP > and the next-hop is in ISIS, that's going to converge pretty quickly. I'll > have to think about this some more. There's probably some obvious factor > that I'm overlooking.
In your edge boxes, advertise to full-mesh iBGP some eBGP route which you consider important and stable, such as 8.8.8.8. You can pick few if you want. In your non-full-route boxes have static route to 8.8.8.8. Now all your routers see all edge boxes as default destinations and will choose which ever is closest, in terms IGP metric. If one edge connection to INET, your 8.8.8.8 will be pulled, and static route won't recurse to that edge anymore To add robustness, in case you don't trust 8.8.8.8 to be there always you can add another eBGP route, or fall back to ASBR loop0 by having static route with worse admin distance. -- ++ytti _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
