I have two Nexus 5010s in a vPC pair with a bunch of FEXs vPC dual-homed between them. I am encountering a problem where, from the point of view of the vPC Primary switch, a MAC address would move from the switch port its connecting to (Eth119/1/25) to the VPL port-channel (Po1). However from the point of view of the vPC Secondary switch the MAC address would remain on the switch port. I lose connectivy to the server from outside the datacenter when this happens. This is happening sporadically to only a small handful for MACs in the datacenter... most other MACs are fine.
Anyone have any clues?
| | |
| | VPL FEX ------- server
| | |
State 1:connectivity is fine, ping works
switch1# sh mac address-table address 0050.56a5.0002
It jumps in and out of that condition for incosisten time periods and at incosistent intervals... ie. mac learned on po1 and stays for couple minutes, then its learned on e119/1/25 on both switches for several minutes, then goes back to po1 after several mintues... whackamole
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