TOI Author :: Girish Dasari

SRv6 is the segment routing using IP v6 Data plane. The segment ID is encoded as an IPv6 address. The Micro-Segment extension to SRv6 has representation of SIDs to enable compressing multiple of them into a single IPv6 address.

At a transit router when multiple LSP are available for a given destination from different protocols EOS does stitching based on hard coded preferences. LFIB stitching preferences give a provision to stitch together different LSPs based on configurable preferences. For each protocol(destination) preference can be configured for a given source protocol.

IS-IS SR Stateful Switchover (SSO) support allows for a switchover from an active supervisor to a standby supervisor where MPLS traffic remains undisrupted during switchover. This involves reconciliation of all Segment Routing related information in the network using IS-IS Graceful Restart procedures. And also installing the same in forwarding hardware in a manner that does not disrupt the ongoing traffic.

IS IS adjacency is not formed between devices with different address families configured. For example,  a router