[c-nsp] 6704-10GE huge input drops (flushes)

Dale W. Carder dwcarder at wisc.edu
Tue May 7 15:36:55 EDT 2013


Thus spake Saku Ytti (saku at ytti.fi) on Tue, May 07, 2013 at 02:23:27PM +0300:
> On (2013-05-07 12:11 +0100), Antonio Soares wrote:
> 
> > Yes, back-to-back L3 interface to a GSR. No MPLS, no sub-interfaces. Only IPv4/IPv6 addressing and ISIS there.
> > 
> > When the last occurrence happened, we saw an increase of 5 million drops.
> > 
> > It's a sporadic thing, it lasts a couple of minutes then everything returns to normal.
> 
> I would probably setup ERSPAN of SP/RP traffic and wait for drop counter to
> increase and see if I have something dodgy on capture. 
> But I'm bit worried if they're seen by that capture, as drop equals flush
> precisely.

You could also run "show buffers input-interface <blah> dump" to see
what is getting punted.

Dale


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