Which task must be performed first to Implement BFD in an IS-IS environment?

Which task must be performed first to Implement BFD in an IS-IS environment?
A . Disable Cisco Express Forward.ng on all interfaces running routing protocols other than IS-IS
B . Configure BFD under the IS-IS process
C . Configure all ISIS routers as Level 2 devices
D . Configure BFD in an interface configuration mode

View Answer

Answer: D

Explanation:

https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/routing/63x/b-routing-cg-ncs5500-63x/b-routing-cg-ncs5500-63x_chapter_0111.html#concept_CD8762104EE84F1795CE48058A19D9ED