Virtual Private LAN Services
7750 SR OS Services Guide Page 785
PBB and BGP-AD
BGP auto-discovery is supported only in the BVPLS to automatically instantiate the BVPLS
pseudowires and SDPs as described in BGP Auto-Discovery for LDP VPLS on page 482.
PBB ELINE Service
ELINE service is defined in PBB (IEEE 802.1ah) as a point-to-point service over the B-
component infrastructure. Alcatel-Lucent’s implementation offers support for PBB ELINE
through the mapping of multiple Epipe services to a Backbone VPLS infrastructure.
The use of Epipe scales the ELINE services as no MAC switching, learning or replication is
required in order to deliver the point-to-point service.
All packets ingressing the customer SAP are PBB encapsulated and unicasted through the B-
VPLS “tunnel” using the backbone destination MAC of the remote PBB PE.
All the packets ingressing the B-VPLS destined for the Epipe are PBB de-encapsulated and
forwarded to the customer SAP.
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