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(Optional) Preventing an Interface from Dynamically Establishing an IPv6 BFD Session
Context
After the ipv6 bfd all-interfaces enable command is used for an IS-IS process on a P2P network, all IS-IS interfaces whose neighbors are Up establish dynamic BFD sessions; all IS-IS interfaces whose neighbors are Up on a broadcast network establish BFD sessions between DISs and non-DISs. If you do not expect certain IS-IS interfaces to establish dynamic BFD sessions, you can disable these interfaces from dynamically establishing BFD sessions. Do as follows to disable the specified interface from dynamically establishing BFD sessions: