[c-nsp] Troubleshooting Input Queue Drops on 7600 running 12.2(33)SRC5

Jared Mauch jared at puck.nether.net
Thu Jul 1 11:14:23 EDT 2010


In the 6500/7600, I believe anything over 1500 mtu is counted as a giant, even if you have jumbo frames configured.

- Jared

On Jul 1, 2010, at 10:56 AM, John Neiberger wrote:

> Have you checked for matching bugs on CCO? I remember having a weird
> bug like this on a 3600 series router one time. I don't think it was
> this exact thing, but it was just some oddball thing that I could
> never explain. I searched CCO and found a bug listing that described
> what I was seeing. An upgrade resolved the problem.
> 
> On Thu, Jul 1, 2010 at 8:45 AM, Devon True <devon at noved.org> wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
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>> On 7/1/2010 10:29 AM, John Neiberger wrote:
>>> I missed the beginning of this thread. Have you determined what is
>>> causing the giants in the first place?
>> 
>> I have not. I was hoping that the output from 'debug ip cef packet
>> g1/1/1 input rate 5 detail' would shed some light, but I do not see
>> packets greater than 404 bytes.
>> 
>>   1080 length=56,
>>    118 length=48,
>>     42 length=60,
>>     38 length=40,
>>     32 length=64,
>>     20 length=70,
>>      6 length=74,
>>      6 length=52,
>>      4 length=58,
>>      2 length=404,
>>      2 length=172,
>>      2 length=100,
>> 
>> - --
>> Devon
>> 
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> 
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