Line card problems on the 40G are nightmares to diagnose. We had a similar problem on a couple of ours that they worked on for months, complete with special instrumentation on the LP's and an engineer on- site. They finally isolated it to too much broadcast traffic (ARPs, due to a network loop somewhere) overwhelming the LP, which then stopped responding.
Things seem much better at 2.3.0d, for what it's worth. We also configured "arp-port-rate-limit 200" per their recommendation to protect the LP from too much broadcast traffic. /cvk On Jun 27, 2007, at 6:53a, Henk.Roose at cwi.nl wrote: > Hello *, > > I have an NI40G that keeps locking up interfaces at random (could be > conce a week, every two weeks or once a month or so). It's > multihomed BGP > connected 10 Gig (primary) and 1 Gig (backup) to two Avici's > upstream. I'm > getting full feeds over both interfaces. Now, what happens is that one > of the line cards seems to stop forwarding traffic which causes the > BGP > sessions to die and I end up with my peerings in Connect state forever > (until I power off/on or reload). I haven't got the slightest idea > what > the cause might be. Anyone experienced this before? I have a call > open > at Foundry's but they haven't come up with anything so far. > > I'm running 2.3.0a btw.
