Loopfree-alternate has been enabled on a router for its link-state routing protocol. For which types of segments will the router attempt to find a backup path, so that they become protected by fast re-route?
A.
Only segments defined by a Node-SID.
B.
Only segments defined by an Adjacency-SID.
C.
Segments defined by a Node-SID and segments defined by an Adjacency-SID.
D.
No segments, unless segment-routing fast-reroute is also explicitly enabled.
Loopfree-alternate is a mechanism that enables fast re-route for link-state routing protocols, it allows the router to find a backup path for both Node-SID and Adjacency-SID segments, so that they become protected by fast re-route.
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