Anycast and prefix segments in SPRING for IS-IS protocols

There is support for anycast segment identifiers (SIDs) and prefix SIDs in source packet routing in networking (SPRING). Currently there is support for node segments in Junos OS supports node segments for IPv4 and IPv6 when they are explicitly configured under the [edit protocols isis source-packet-routing node-segments] hierarchy. Now you can provision prefix SIDs along with node SIDs to prefixes that are advertised in IS-IS protocols through policy configuration. Anycast SID is a prefix segment that identifies a set of routers. You can configure explicit-NULL flag on all prefix SID advertisements and configure shortcut for SPRING routes using family inet-mpls or family inet6-mpls .