[f-nsp] NI40G interfaces blocking

[Charley Kline]

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.