ELINE service is defined in PBB (IEEE 802.1ah) as a point-to-point service over the B-component infrastructure. The Nokia implementation provides 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 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.