SRv6 SR-TE binding SID support

Binding SID (BSID) segregates the network into multiple traffic engineering (TE) tunnels. You can allocate Segment Routing over IPv6 (SRv6) BSIDs under an SRv6-TE tunnel to reduce the stack size at the ingress node. The ingress node stores only a subset of TE database from other domains and transit nodes with the binding SID handles convergence. SRv6 binding supports both classic and micro SIDs (uSIDs).