[c-nsp] issues with 6500 platform

[Peter Rathlev]

On Tue, 2011-02-08 at 10:01 -0600, Jason Cardenas wrote:
> #show platform hardware capacity
...
> Interface Resources
>   Interface drops:
>     Module    Total drops:    Tx            Rx      Highest drop port:  Tx   Rx
>     3                 3020928236             0                          12   0

That might be a problem. What does "show interface" counters tell you
about "output drops", at least for Gi3/12 but probably also other
interfaces? Are the 3,020,928,236 drops a significant amount compared to
"packets output"?

Try "show queueing interface Gi3/X" for every X with a significant
amount of "output drops".

It does not in itself explain why the drops are selective of course.
Unless you have some complex-ish QoS-marking somewhere.

> Pete Lumbus, we're looking into that direction; but we simply don't
> have anything like "QoS, tcp adjust-mss" on our interfaces

But you have QoS enabled globally. With no interface specific
configuration you might have worse results than with no QoS at all.

-- 
Peter