B-MAC : All the bridges(routers) in backbone network are manually configured with a unique MAC address. These MAC addresses are used in forwarding base to identify which remote BEB should customer traffic be forwarded to.
B-SA : Denotes backbone MAC address of source bridge.
B-DA : Denotes backbone MAC address of destination bridge.
BEB : Backbone edge bridge is the router that faces customer edge node.
BCB : Backbone core bridge is transit node in provider's core network that switches frame towards destination.
B-VID : Vlan that carries PBB encapsulated customer traffic within core.
I-SID : Represents a unique service identifier associated with service instances.
B-Tag : Contains backbone vlan(B-VLAN) id information. I-Tag : Contains I-SID value and helps destination BEB router to determine which I-Component or service instance should the traffic be forwarded to.
S-VID : Vlan that receives customer traffic and is called Service Vlan identifier(S-VID). C-VID : Vlan tag received in customer's frame. This remains intact while it encapsulated and transported across provider network. C-SA : Original source MAC address of customer's frame. C-DA : Original destination MAC address of customer's frame.
l2vpn bridge group B-Comp-Grp bridge-domain B-Comp-Dmn
interface GigabitEthernet <> // Adds an interface to a bridge domain that allows packets to be // forwarded and received from other interfaces that are part of the same bridge domain. pbb core rewrite ingress tag push dot1ad <B-VID> symmetric // Defines backbone vlan id for core ! ! ! !