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Congested Ports/dropping Packets and QOS

Congested Ports/dropping Packets and QOS

EtherNation_Use
Contributor II
Create Date: Oct 8 2013 8:49PM

Hello's
I'm experiencing port congestion and hence packets dropped on certain ports. This is an issue since the ports are VOIP ports.
My questions are as follows.
1) When I run Show ports congestion I see packets dropped on certain ports.
2) When I run Show ports QOSmonitor congestion I see no packets dropped.

I was under the impression that all traffic that was not marked would fall into the QP1 queue and other marked traffic would fall into the respective queues
If i'm dropping packets and can see this using the show ports congestion command, should i also not be able to see this in the qosmonitor congestion command? I'm trying to figure out what queue the traffic being dropped is in.

Many thanks for your time,
Blue
(from bluehades)
5 REPLIES 5

treese
Contributor
I increased the shared buffer port about year ago, but didn't help. Haven't tried the flow control part. Thanks

PARTHIBAN_CHINN
Contributor
is the ethernet port connecting to server.
flow control might be the problem.

You can enable flow control or contact TAC
so that they could check if pause frames are received due to which traffic is congested.

You can try to increase Ports shared buffer .

treese
Contributor
I have similar situation with a gig ETH link that doesn't seem to go over 65% but see drops consistently. No layer 2 errors seen too.

craymond
New Contributor III
I have talked to quite a few individuals that have the same issue. Has anyone found a resolution?
GTM-P2G8KFN