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What does this log mean?

Posted on 2009-03-31
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Last Modified: 2012-05-06
3/31/2009 5:55:07 AM c4507r_core Warning 318: 000702: Host 00:50:56:84:15:3F in vlan 1 is flapping between port Gi4/4 and port Gi3/11

3/31/2009 12:05:48 AM c4507r_core Warning 266: 000650: Host 00:50:56:84:15:3F in vlan 1 is flapping between port Gi3/11 and port Gi3/7

I know what flapping is, but why would it be reported like it is above (i.e.: Flapping between port x and port y).  We have servers plugged into these ports
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Question by:dissolved
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4 Comments
 
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JFrederick29 earned 2000 total points
ID: 24028017
Do you have NIC teaming setup on the servers?  If so, you can see this if the NIC is doing load balancing instead of "fail on fault".  Verify the NIC teaming configuration is set to "fail on fault".
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by:dissolved
ID: 24028091
yea the nics are set to team.  So I want it to fail on fault correct? Not load balance?
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Expert Comment

by:JFrederick29
ID: 24028136
Yes, correct, fail on fault.  Only use load balance when you have an etherchannel connection with the switch.
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Author Closing Comment

by:dissolved
ID: 31564778
thanks
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