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

Peter Rathlev peter at rathlev.dk
Tue May 7 01:21:43 EDT 2013


On Mon, 2013-05-06 at 23:59 +0100, Antonio Soares wrote:
> Before:
> ++++++++++++++++++++++++++++++++
> cat6k#sh int te1/1 | inc drops
>   Input queue: 1/2000/10310609/10310609 (size/max/drops/flushes); Total
> output drops: 0
> cat6k#
> ++++++++++++++++++++++++++++++++
> 
> After:
> ++++++++++++++++++++++++++++++++
> cat6k#sh int te1/1 | inc drops
>   Input queue: 0/2000/15863293/15863293 (size/max/drops/flushes); Total
> output drops: 0
> cat6k#
> ++++++++++++++++++++++++++++++++
> 
> This is a L3 interface is connected directly to a 12K (sip-601+spa-10ge).

Hm... the queue size of 2000 is default for a switchport where 75 is
default for a L3 port. Did you just happen to increase it with
"hold-queue 2000 in"?

The drops might not just be the port. Traffic directed at the CPU might
get dropped and will (AFAIK) be counted towards drops on the input port.

-- 
Peter




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