Users Guide
neighbor bfd
Explicitly enable a BFD session with a BGP neighbor or a BGP peer group.
S4820T
Syntax
neighbor {ip-address | peer-group-name} bfd
Parameters
ip-address 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).
peer-group-name Enter the name of the peer group that you want to explicitly enable for BFD
sessions.
Defaults none
Command Modes ROUTER BGP
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000–ON.
9.0.2.0 Introduced on the S6000.
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.8.0 Introduced on the S4810.
8.4.1.3 Introduced on the E-Series ExaScale.
Usage Information
When you enable a BFD session with a specied 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 you have not specied parameters with the bfd neighbor
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 congured with the bfd neighbor
command or congured for the peer group to which the neighbor belongs.
• The neighbor only inherits the global timer values congured with the bfd neighbor command:
interval, min_rx, and multiplier.
Related Commands
neighbor bfd disable — Explicitly disables a BFD session with a BGP neighbor or a BGP peer group.
Bidirectional Forwarding Detection (BFD)
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