When considering bidirectional forwarding detection, which two statements are correct? (Choose two.)

Question

Options

• AThe BFD default minimum interval is 3.
• BYou can configure BFD per interface within the protocol stanza.
• CThe BFD operation always consists of minimum intervals and multipliers.
• DThe BFD default multiplier is 5.

• A
  3% (1)
• B
  89% (32)
• D
  8% (3)

Explanation

Bidirectional Forwarding Detection (BFD) is a protocol used to detect faults in the forwarding path between two routers. It provides rapid failure detection, enhancing the performance of routing protocols like OSPF, BGP, and IS-IS. Per Interface Configuration: BFD can be configured on a per-interface basis within the protocol stanza (e.g., OSPF, BGP). This allows granular control over where BFD is enabled and the failure detection intervals for specific interfaces. Minimum Interval and Multiplier: BFD uses a minimum interval (the time between BFD control packets) and a multiplier (the number of missed packets before the path is declared down). The combination of these two defines the detection time for failures.

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