Question 360
An enterprise network designer recommends: Allow supported PIM shortest-path-tree switchover when appropriate. Which situation most clearly calls for this action?
Explanation
Correct Answer
This case requires the Shortest-path-tree switchover action. A receiver-side router can join a direct source tree rather than continuing through the shared RP tree.
Incorrect Answers
This other case would be better matched to Use the PIM designated-router election process for the shared LAN. A selected PIM router acts on the LAN's receiver interest to build upstream state.
This other case would be better matched to Configure a supported rendezvous-point mapping for the intended ASM groups. The shared-tree join messages can reach the correct rendezvous point.
This other case would be better matched to Enable and verify compatible PIM operation on the expected routed interfaces. Adjacent multicast routers can exchange Hello and build control-plane neighbor state.