10-20-2008 01:48 AM - edited 03-06-2019 02:02 AM
*Oct 20 06:38:54: %C4K_EBM-4-HOSTFLAPPING: Host 02:01:00:00:00:00 in vlan 7 is f
lapping between port Gi4/1 and port Gi4/6
reply ASAP
10-20-2008 02:09 AM
I saw this when we had server with teamed NIC connected to two different switches...it could be also incorrectly configured sever (teaming, etherchanel).. I would suggest to find machine connected to this ports and check configuration
10-20-2008 03:29 AM
It could mean someone has physically looped those 2 ports together or possible that someone is roaming between 2 ap's .
10-20-2008 06:40 AM
thanks for repply
both are trunk port, one l3 is root bridge
we are facing this problem only vlan 7 and vlan 1
gi4/1 is connected between two L3
Gi4/6 is a L2 switch for user connectivity.
All uplink are Trunk Port
waiting for reply
10-20-2008 08:21 AM
this could be issue with duplicate MAC ID on your network,someone might be assigned MAC id
manually to the NICs.
try to find out that device.
you can shutdown one of the port and try to locate the other one by
sh mac-address-table |include MAC ID
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