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 and pseudowire
BVPLS service resiliency, loop avoidance solutions - Mesh, active/standby pseudowires and multi-chassis endpoint
IVPLS service resiliency, loop avoidance solutions - Mesh, active/standby pseudowires (PE-rs only role), BGP multihoming
To support these resiliency options, extensive support for blackhole avoidance mechanisms is required.