[c-nsp] OutDiscards (ME3600X)

Waris Sagheer (waris) waris at cisco.com
Thu Dec 15 04:18:58 EST 2011

Are you experiencing any microburst? What is the egress or NNI link?


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Christian
Sent: Thursday, December 15, 2011 12:38 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] OutDiscards (ME3600X)

Hi list,

although I'am only seeing a load of ~ 0.2 - 1 Mbps on a 100Mb-link of a
it's showing some hundred OutDiscards all 1-5 minutes.

#sh int g0/3 count err
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize
Gi0/3                0            0            0            0

#sh int g0/3 | i CRC|rate|media|queue
  Full-duplex, 100Mb/s, media type is T
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 49000 bits/sec, 33 packets/sec
  30 second output rate 119000 bits/sec, 35 packets/sec
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

It seems that this changes if I configure a policy-map with a
and a queue-limit with a maximum configured size of 491520 Bytes.

policy-map foo
 class class-default
 queue-limit 491520 bytes
int g0/3
 service-policy output foo

I'am confused and feel really uncertain about this... :-(

Some enlightenment please!

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