300-415 · Question #348
What is the BFD multiplier in application-aware routing?
The correct answer is A. 6. In Cisco SD-WAN application-aware routing, BFD (Bidirectional Forwarding Detection) uses a fixed multiplier of 6 to determine when a path is considered down.
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Options
- A6
- B7
- C8
- D9
How the community answered
(36 responses)- A94% (34)
- B3% (1)
- D3% (1)
Why each option
In Cisco SD-WAN application-aware routing, BFD (Bidirectional Forwarding Detection) uses a fixed multiplier of 6 to determine when a path is considered down.
The BFD multiplier in Cisco SD-WAN application-aware routing is hardcoded to 6. This means if 6 consecutive BFD hello packets are missed, the path is declared down and traffic is rerouted to an alternative path based on the configured SLA policy.
A multiplier of 7 is not the value used; the SD-WAN BFD multiplier is fixed at 6 and is not user-configurable.
A multiplier of 8 is incorrect; the BFD multiplier in application-aware routing is specifically set to 6, not 8.
A multiplier of 9 is not used; the fixed BFD multiplier value in Cisco SD-WAN application-aware routing is 6.
Concept tested: BFD multiplier in SD-WAN application-aware routing
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/application-aware-routing.html
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