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Question 29 - JN0-280 discussion

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What is the main purpose of Bidirectional Forwarding Detection (BFD)?

A.

to detect network path failures

Answers
A.

to detect network path failures

B.

to determine if the forwarding routes are correct

Answers
B.

to determine if the forwarding routes are correct

C.

to detect the forwarding protocol

Answers
C.

to detect the forwarding protocol

D.

to determine packet round-trip latency

Answers
D.

to determine packet round-trip latency

Suggested answer: A

Explanation:

Bidirectional Forwarding Detection (BFD) is a network protocol used to detect failures in the network path between two devices quickly.

Step-by-Step Breakdown:

Path Failure Detection:

BFD provides a low-overhead mechanism for detecting failures in forwarding paths across Layer 3 networks. It is much faster than traditional routing protocol timers and can detect failures within milliseconds.

BFD in Routing:

BFD can be integrated with routing protocols like OSPF, BGP, or IS-IS to trigger a faster convergence when a network path goes down.

Juniper

Reference:

BFD Configuration: Juniper devices use BFD to monitor network paths and ensure fast failure detection, enhancing network resilience.

asked 10/10/2024
Stephen DeWhite
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