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N1Kv - empty packet capture

we see increasing output drops on a veth interface on a nexus 1000v.

DS-N1K-10# sh clock
Tue Apr 8 06:05:03 UTC 2014
DS-N1K-10# sh int Veth19 | incl Drops
    0 Input Packet Drops 415678974 Output Packet Drops
...

DS-N1K-10# sh clock
Tue Apr  8 06:06:07 UTC 2014
DS-N1K-10# sh int Veth19 | incl Drops
    0 Input Packet Drops 415701498 Output Packet Drops

to figure out what is dropped we used vempkt capture but we dont see packets.

Here the session output:

 

DS-N1K-10# module vem 3  execute vemcmd show port
  LTL   VSM Port  Admin Link  State  PC-LTL  SGID  Vem Port  Type
   ...

   59     Veth19     UP   UP    FWD       0     0  LI-UAPP03a ethernet1 
...             

DS-N1K-10# module vem 3 execute vempkt stop
Will suspend log after next 0 entries
DS-N1K-10# module vem 3 execute vempkt clear
Cleared log
DS-N1K-10# module vem 3 execute vempkt capture drop ltl 59
Successfully set packet capture specification
DS-N1K-10# module vem 3 execute vempkt stop
Suspended log
DS-N1K-10# module vem 3 execute vempkt display detail all

Also the exported capture file is empty:
 

DS-N1K-10# module vem 3 execute vempkt pcap /tmp/vempkt_capture_drop.cap
Export Complete!
DS-N1K-10#

Is there a way to find out what is dropped?

Everyone's tags (1)
1 REPLY
Cisco Employee

Hi Schade,Given that you are

Hi Schade,

Given that you are not seeing any actual drops in the vempkt, it is this defect 

CSCtx66382: show interface counters ( veths ) show large values.

You can view the defect with this link:

https://tools.cisco.com/bugsearch/bug/CSCtx66382

Thanks,

Joe

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