Static adjacency segment identifier for IS-IS

You can configure static adjacency segment ID (SID) labels for an interface. You can configure two IPv4 adjacency SIDs (protected and unprotected), IPv6 adjacency SIDs (protected and unprotected) per level per interface. You can use the same adjacent SID for multiple interfaces by grouping a set of interfaces under an interface-group and configuring the adjacency-segment for that interface-group. For static adjacency SIDs, the labels are picked from either a static reserved label pool or from segment routing global block (SRGB).