PBB Features
Page 448 7210 SAS M Services Guide
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.
PBB Resiliency for PBB epipe service
The PBB epipe service can be protected using G.8032 (the G8032 instance is created to protect the
PBB B-VPLS service). For more information and for an example see Overview of G.8032
Operation.
PBB Resiliency for B-VPLS
The following VPLS resiliency mechanisms are also supported in PBB VPLS:
• Native Ethernet resiliency supported in both I-VPLS and B-VPLS contexts
• Distributed LAG, MC-LAG, RSTP
• MSTP in a management VPLS monitoring (B- or I-) SAPs.
• The G.8032 is supported for B-VPLS service. The G.8032 support is used only with PBB
Epipe service from the current releases and cannot be used with PBB I-VPLS service.
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