SRv6 TE micro SID support for transport and L3VPN

This feature extends support micro segment identifier (uSID) for SRv6 traffic engineering (TE). We support SR TE micro-SID only with default block configurations across the whole network domain or if any block configs are present, then that confiig must be the same throughout the whole network. The Packet Forwarding Engine (PFE) supports bit shifting operations for both :: and : routes. You must configure the full SID, the way it is advertised in IS-IS IGP, that is : or ::.

This feature introduces the following configuration statements:

• micro-srv6-sid statement under the protocols source-packet-routing segment-list hierarchy to configure micro-SID in SRTE SRv6 segment-list
• strict-adjacency statement under the protocols source-packet-routing segment-list hierarchy to strictly follow the micro adjacency SID

You can configure the segment-list containing micro-SIDs with the existing SRv6 configuration statement like the traditional SRv6 configuration. The only difference between the traditional and micro-SID configuration is that in traditional SRv6 TE segment-list configuration, you must use the configuration statement srv6-sid. However, for micro-SID configuration, you must use the new configuration statement micro-srv6-sid.