[c-nsp] Cisco 7301 running at 99% CPU doing iBGP update

[jamie baddeley]

On Tue, 2006-06-27 at 11:51 -0700, Bruce Pinsky wrote:
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> Rodney Dunn wrote:
> > Wonder if he's getting recursive next hops.
> > 
> > Make sure all your iBGP peers are next hop self.

Thanks for the thoughts guys.

Yep, got that as standard in IBGP peer group. And the iBGP peer is
learning things appropriately (if not somewhat slowly (the update ended
up taking an hour)) - Next hop is set to the iBGP peer you learn it from
etc.

I already had MTU hardset to 9000 on both interfaces. Right now the link
between the two routers is a 2 metre piece of ethernet cable running at
1 gig. No errors being reported. I'll change down to something like 1500
MTU to see if that makes a difference and turn damned autoneg off (even
if we do have no errors)

About the only other thing I should point out is that the International
Feed is coming via EBGP multihop, and I'm using OSPF to stand up the
loopbacks in the IGP. But I'd be amazed if they had anything to do with
it.

cheers

jamie