Hello Pawel,
I'm a bit late to this and I see that the discussion went off on a different track. But in answer to your original question, you could use the following
sw0# sh ip int br rb all | inc Ve|Status
Interface Rbridge IP-Address Vrf Status Protocol
Ve 100 63 192.168.253.163 mgmt-vrf up up
Ve 100 64 192.168.253.164 mgmt-vrf up up
sw0#
As you see this will give you the Ve interfaces for each RBridge and also status.
Steve
