[c-nsp] 6500 (Sup7203-bxl / 6724-SFP) Input queue drops

[Kamlesh Sharma]

try this command which will tell what packet and source are sending the
traffic with ttl of 1
show buffer input-interface <> header/packet

On Mon, Dec 7, 2009 at 8:06 PM, Drew Weaver <drew.weaver at thenap.com> wrote:

> Drew Weaver wrote:
> > Hi,
> >
> > It is possible.
> >
> > We're a co-location style facility where we do not have direct
> > control over what the end systems do.
> >
> > I would think that a system like the 6500 should be able to handle a
> > little UDP traffic without losing its mind but i've been wrong about
> > things in the past =)
>
> Well, mtr is a traceroute style program, and one that can be quite
> aggressive at that (though useful). If it's sending a lot of packets at
> your router which have TTL=1 when they arrive, then that's a lot of CPU
> punts.
>
> You didn't specify whether anything was *wrong* here; are you
> experiencing problems, or just counter anomalies?
>
> I take it the port-channel is in routed mode, rather than switchport?
> --------------
>
> The problem is I'm seeing queue drops, so my first reaction to that was to
> see what kind of packets were being queued.
>
> You are correct the interface is not a switchport and has an IP assigned to
> it.
>
> thanks,
> -Drew
>
>
>
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-- 
Thanks
Kamlesh Sharma