SAPs
Ethernet dot1q is supported - this is applicable to most PBB use cases, for example, one backbone VLAN ID used for native Ethernet tunneling
Ethernet null is supported - this is supported for a direct connection between PBB PEs, for example, no BVID is required
Default SAP types are blocked in the CLI for the B-VPLS SAP.
The following rules apply to the SAP processing of PBB frames:
For ‟transit frames” (not destined to a local BMAC), there is no need to process the ITAG component of the PBB Frames. Regular Ethernet SAP processing is applied to the backbone header (BMACs and BVID).
If a local I-VPLS instance is associated with the B-VPLS, ‟local frames” originated/terminated on local I-VPLSes are PBB encapsulated/de-encapsulated using the pbb-etype = 0x88e7.