1 Reply Latest reply on Aug 26, 2016 12:19 PM by adamwiso

    Log / location indicate LBT move

    ShawnPD Novice

      Hi,

      I am trying to track down which log and possibly what entry would show the move of a vm from one vmnic to another.  We are trying to pin down an issue with particular application that drives high network use from time to time and think the move from one vmnic to another vmnic may be the issue.  But would like to correlate the LBT action with the issue on the vm if at all possible.

      So again looking for the log or logs that would indicate LBT has moved a vm from one vmnic to another vmnic ... any ideas?

        • 1. Re: Log / location indicate LBT move
          adamwiso Enthusiast
          vExpert

          First you will be able to see the NIC use another vmnic in esxtop -> n (Sure you are already aware of this).  If you want to find this action in the logs, take to vmkernel log.  First find what the DV port ID your VM is using, use esxcfg-vswitch -l

           


          Once you have this take to the vmkernel log and look for entries like this.

           

          NetPort: 3101: resuming traffic on DV port 124

          This should match up with the DV port ID above where you believe the flapping to be occurring.  I just tested this today and it matched up.  If you wonder what the terminology for the resuming traffic on DV port refers to, its as the failover happens you verrry briefly lose connection, this is it re-establishing.