Command History Version 9.0.0.0 Introduced on Z9000.Version 8.3.12.0 Introduced on S4810.Version 8.2.1.0 Introduced on the E-Series ExaScale.Version 7.5.1.0 Introduced on the E-Series.UsageInformationThis command provides the flexibility to fine tune the timer values based on individual interfaceneeds when ISIS BFD is configured in CONFIGURATION mode. Any timer values specified withthis command override timers set using the bfd all-neighbors command. Using the noform of this command does not disable BFD if BFD is configured in CONFIGURATION mode.Use the keyword disable to disable BFD on a specific interface while BFD is configured inCONFIGURATION mode.neighbor bfdExplicitly enable a BFD session with a BGP neighbor or a BGP peer group.E-Series ExaScale, Z-Series, S4810Syntax neighbor {ip-address | peer-group-name} bfdParametersip-address Enter the IP address of the BGP neighbor that you want to explicitlyenable for BFD sessions in dotted decimal format (A.B.C.D).peer-group-name Enter the name of the peer group that you want to explicitly enable forBFD sessions.Defaults noneCommand Modes ROUTER BGPCommand History Version 9.0.0.0 Introduced on the Z9000.Version 8.3.8.0 Introduced on the S4810.Version 8.4.1.3 Introduced on the E-Series ExaScale.UsageInformationWhen you enable a BFD session with a specified BGP neighbor or peer group using the bfdneighbor command, the default BFD session parameters are used (interval: 100milliseconds, min_rx: 100 milliseconds, multiplier: 3 packets, and role: active) if you have notspecified parameters with the bfd neighbor command.When you explicitly enable a BGP neighbor for a BFD session with the bfd neighborcommand:• The neighbor does not inherit the global BFD enable values configured with the bfdneighbor command or configured for the peer group to which the neighbor belongs.322
