What happens if same MACaddress on 2 exclusive VLANs on same switch?

[dave2001]

What would happen when there is one smart switch with 2 VLANs
(exclusive, port based, say port1-8=VLAN1 and port9-16=VLAN2)
and say the MAC address (00:12:34:56:78:9A) on port 1 is the
same as MAC address (00:12:34:56:78:9A) on port 9?
Does the switch get confused about frames getting
sent to a MAC address that exists on both VLANs?


How this could come about:
Older home routers had different MAC address on WAN port
than the MAC address on LAN port.
I could set up 2 VLANs and connect the routerWAN-port to VLAN1
and routerLAN-port to VLAN2 and it would work.

Newer home routers have the same MAC address for the WAN port
as the LAN port.
So connecting the newrouterWAN-port to VLAN1 and the
newrouterLAN-port to VLAN2 creates the above situation
with the same MAC address at 2 different ports, one on each VLAN.

I'd appreciate any help/advice.

 

[thiggins]

VLANs keep broadcasts local to the VLAN. This would include ARP and DHCP. So I think that you would be ok.

But since you have all the gear, why not try it and let us know?