Same MAC address in 2 different VLANs

joost at joost at
Fri Jul 19 10:39:22 UTC 2013

> Hello,
> Could any one comment about the use of the same MAC address in 2
> separate VLANs?
> Will this be an issue?

You might run into problems if the two (virtual) systems are attached to a
different port on your switch. Some switches don't take the vlan into
account when learning on which port a mac address exists. These switches
will see the mac address jumping between ports all the time.


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