Which of the following statements regarding the use of Bidirectional Forwarding Detection (BFD) in a Cisco SD-WAN environment are true?
Which of the following statements regarding the use of Bidirectional Forwarding Detection (BFD) in a Cisco SD-WAN environment are true?
Bidirectional Forwarding Detection (BFD) in a Cisco SD-WAN environment is used not only for link failure detection but also for measuring loss and latency, which are key metrics for application-aware routing. Additionally, BFD is typically enabled for OMP (Overlay Management Protocol) to ensure optimal performance and fault detection across overlay tunnels. While it provides essential link statistics, it is not true that BFD cannot be disabled on SD-WAN routers or that it does not support BGP.
Answer provided is correct: Runs on SD-WAN tunnel to detect failures in the overlay tunnel Is enabled by default and cannot be disabled Is typically enabled for OMP Besides link failures, it also measures latency, loss, and other link statistics used by application-aware routing https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/ios-xe-17/routing-book-xe/m-bfd-for-routing-protocols.html#Cisco_Concept.dita_26cf6354-cce5-4799-b140-f518adc78a40
The BFD (Bidirectional Forwarding Detection) is a protocol that detects link failures as part of the Cisco SD-WAN (Viptela) high availability solution, is enabled by default on all vEdge routers, and you cannot disable it. BFD and related parameters: Path liveliness and quality measurement detection protocol: Up/Down, loss/latency/jitter, IPSec tunnel MTU, Runs between all routers in the topology Uses hello (up/down) interval, poll interval and multiplier for detection
A & C are correct
The question doesn't say to select more than one answer? I chose C.
totally agree
surprising that Cisco enforces the use of BFD on it's SDWAN solution. but A & C are the answers