Hi John, you might be spot on- graceful restart is configured for this peer and it does look like my side is respecting it: > show bgp neighbor <snip> Options: <Preference HoldTime AuthKey GracefulRestart LogUpDown PeerAS Refresh>
I'll let you know what I find out -andy On Thu, Mar 13, 2014 at 7:10 PM, John Neiberger <jneiber...@gmail.com>wrote: > I've only seen something like this once and it was a graceful restart > issue....er...."feature" on a Cisco router, so I doubt it's the same > problem here. In that situation, the router waited for a graceful restart > timer to expire before it would clear out the routes, and it was doing this > despite the fact that it had never received a signal that the other side > was doing a graceful restart. > > It seems unlikely that you'd be seeing the same type of problem, but the > symptoms sound very similar. > > John > > > On Thu, Mar 13, 2014 at 3:38 PM, Andy Litzinger < > andy.litzinger.li...@gmail.com> wrote: > >> One of my providers (and eBGP neighbor) recently had a hardware failure >> which caused the port that connects our two routers to go down. My router >> did detect the link failure and BGP pretty much immediately transitioned >> to >> an Idle state. my side is a Juniper MX80 running 11.4, their side I >> believe is a Cisco 6509. >> >> what surprised me is that it looks like routes toward that provider were >> not immediately removed from my routing table. Instead i see evidence of >> blackholing for almost 3 minutes. Is this normal behavior? is the >> behavior configurable? I thought it might be related to the BGP holdtime, >> but that appears to be set for 30 seconds. >> >> I see that cisco has a feature called 'fast-external-fallover' that >> bypasses the hold-down timer. Is there an equivalent in JunOS? what is >> the Juniper best practice to handle link failure between eBGP neighbors? >> >> thanks! >> -andy >> _______________________________________________ >> juniper-nsp mailing list juniper-nsp@puck.nether.net >> https://puck.nether.net/mailman/listinfo/juniper-nsp >> > > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp