Dell Force10 S4820T FTOS Command Reference Guide - Page 297

Use the keyword disable to disable BFD on a specific interface while BFD is configured in from CONFIGURATION mode. neighbor bfd ex Explicitly enable a BFD session with a BGP neighbor or a BGP peer group. Syntax Parameters Defaults Command Modes Command History Usage Information Related Commands neighbor {ip-address | peer-group-name} bfd ip-address peer-group-name Enter the IP address of the BGP neighbor that you want to explicitly enable for BFD sessions in dotted decimal format (A.B.C.D). Enter the name of the peer group that you want to explicitly enable for BFD sessions. None ROUTER BGP Version 8.3.19.0 Version 8.3.8.0 Version 8.4.1.3 Introduced on the S4820T. Introduced on the S4810. Introduced on the E-Series ExaScale. When you enable a BFD session with a specified BGP neighbor or peer group using the bfd neighbor command, the default BFD session parameters are used (interval: 100 milliseconds, min_rx: 100 milliseconds, multiplier: 3 packets, and role: active) if no parameters have been specified with the bfd all-neighbors command. When you explicitly enable a BGP neighbor for a BFD session with the bfd neighbor command: • The neighbor does not inherit the global BFD enable values configured with the bfd all-neighbors command or configured for the peer group to which the neighbor belongs. • The neighbor only inherits the global timer values configured with the bfd all-neighbors command: interval, min_rx, and multiplier. bfd all-neighbors neighbor bfd disable show bfd neighbors Enable BFD sessions with all neighbors discovered by Layer 3 protocols. Explicitly disable a BFD session with a BGP neighbor or a BGP peer group. Display BFD neighbor information on all interfaces or a specified interface. Bidirectional Forwarding Detection (BFD) | 297