300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

By Cisco · Question Mode

QuestionQ227

Unicast Routing

Which statement regarding BFD on Cisco IOS XR Software is true?

  • A Cisco IOS XR router must use LDP to route back to the Cisco IOS router to establish the peer relationship.
  • B Cisco IOS XR Software does not support BFD multihop for IPv4.
  • C Cisco IOS XR router must use dynamic routing or a static route back to the Cisco IOS router to establish the peer relationship.
  • D BFD is not compatible between Cisco IOS XR and Cisco IOS Software.
Explanation

A Cisco IOS router can designate a Cisco IOS XR router as its BFD peer, but Cisco IOS XR must have a return path to the Cisco IOS router through dynamic routing or a static route to establish that peer relationship. Cisco documents this IOS/IOS XR BFD interoperability requirement.

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