Hi - I have a question regarding when to use a single VRID and when to use differnet VRIDs. As I understand it, a VRID designates a virtual router pair - when 2 routers have the same VRID they are able to exchange VRRP messages.
In my example above - If I have CORE A and CORE B in the same buildling with the same 3 VLANs on - should I use a different VRID for each VLAN or the same VRID for all VLANS. Historically we have always used 1 VRID for all vlans across the cores and it has worked as we would expect.
The only reason I ask the question is when configuring ports on the core with multiple VLANs we often get the following warning from the switch;
WARNING : Port <port number> belongs to multiple VLANs with the same VRID
I'm not sure why the switch warns of this - why is this a problem/warning?