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DRB dictates VLAN for LAN for inter-RBridge communication
Default: RBridges send all inter-RBridge communication with (outer header) VLAN tag=1
RB1 may be configured to send Hellos on a set {S} of VLANs, with one (say VLAN X) marked as the inter-RBridge VLAN
If RB1 is the DRB, it sends Hellos on all in {S}, but specifies “use VLAN X”
Other RBridges send Hellos (and all other inter-RBridge traffic) with outer tag X
RB1 continues to send, and listen for, Hellos on all {S}
Note that {S} need not be all the VLANs RB1 supports
PPT Version