[c-nsp] C2960G and output drops

[Gert Doering]

Hi,

On Wed, Oct 01, 2008 at 07:07:59PM +0300, Tassos Chatzithomaoglou wrote:
> Gert Doering wrote on 01/10/2008 11:19:
> 
> > - how can I find out why the switch is dropping packets?
> 
> You can try the "sh platform port-asic stats" command:
> 
> 2960#sh platform port-asic stats ?
>   drop           Drop Statistics

Nothing like good counters... :-)

#sh platform port-asic stats drop gi0/10
[... "Frames 0" lines omitted...]
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 69425656

#sh platform port-asic stats drop asic 1
...
  Port  0 TxQueue Drop Stats: 69447671
  Port  1 TxQueue Drop Stats: 0
  Port  2 TxQueue Drop Stats: 0
  Port  3 TxQueue Drop Stats: 0

#sh platform port-asic stats enq g0/10
  Interface Gi0/10 TxQueue Enqueue Statistics
    Queue 0
      Weight 0 Frames 2
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 34
      Weight 2 Frames 57548
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 3505735486

... so that basically tells me what I was assuming - "all packets go into
the same queue (no QoS marking going on here, all packets are important), 
and some of them get dropped".

I'm not really sure how to start from here towards "*why* is it dropping
the packets"?

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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