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Questions # 11:

The exhibit presents packets being transmitted inside an LSP's multi-segment primary path going from router R1 to router R8. The LSP also has a standby secondary path, and Seamless-BFD has been enabled on the primary path. The link between routers R1 and R2 fails, and fast re-route (FRR) is triggered. As a result, router R1 forwards the packets to router R3 and adds the proper FRR encapsulation to reach which router?

Question # 11

Options:
A.

To reach router R2, which is the LSP's intended next-hop.

B.

To reach router R5, which is the shortest way to go back to the original path.

C.

To reach router R4, which is the tail-end of the active segment.

D.

To reach router R8, which is the tail-end of the LSP.

Questions # 12:

An SR-TE LSP with a path definition that includes router R4 as a loose hop and for which Seamless-BFD has been enabled is following the path shown in the exhibit. What happens after router R4 fails if the routers along the path follow the default behavior?

Question # 12

Options:
A.

The head end will periodically try to calculate a new path at a rate defined by the retry timer.

B.

The head end will periodically try to calculate a new path at a rate defined by the resignal timer.

C.

The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.

D.

The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence.

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