I saw this question asked on another list and I'm curious to find out
if there is a good answer. A user has a high priority queue and a
default queue configured on an interface on a 1751 running some flavor
of 12.2. He is having intermittent dropped packets in the default
queue, as you would expect. However, he's wondering if there is some
sort of debugging that would show which packets are being dropped.
He's having other issues on the link and he'd like to find out if
adding another queue would be a good idea. I think he should already
know which traffic types are on his network that would require
priority handling, but that's beside the point.
Is debug ip packet the only way to see which packets are being dropped
or is there something a bit more granular available?
Thanks,
John
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Tue, May 09, 2006 at 08:57:32AM -0600, John Neiberger wrote:
I saw this question asked on another list and I'm curious to find out
if there is a good answer. A user has a high priority queue and a
default queue configured on an interface on a 1751 running some flavor
of 12.2. He is having intermittent dropped packets in the default
queue, as you would expect. However, he's wondering if there is some
sort of debugging that would show which packets are being dropped.

No. There isn't a good way.

He's having other issues on the link and he'd like to find out if
adding another queue would be a good idea. I think he should already
know which traffic types are on his network that would require
priority handling, but that's beside the point.

Is debug ip packet the only way to see which packets are being dropped
or is there something a bit more granular available?

No. Forget the debugs because they only work at process level
and I sure hope you are not running packets at process level.

You need to get a sniffer trace and compare that against your
class-map matches.

Not easy but it's the only real way.

Rodney

Thanks,
John

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