A protected DWDM circuit with disjoint fiber routes and guaranteed restoration times is ordered to connect two hub sites. Which BFD design consideration is true in relation to protected DWDM?
A) BFD failure detection must be longer than DWDM restoration time
B) BFD is incompatible with protected DWDM
C) BFD failure detection must be faster than DWDM restoration time
D) The BFD hello timer must match the DWDM circuit restoration time

Question

Quizplus · Accepted Answer

BFD (Bidirectional Forwarding Detection) is used to detect faults in the path between two forwarding engines. For effective fault detection, BFD failure detection should be faster than the DWDM restoration time to ensure quick rerouting and minimal disruption.

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