Users Guide

Parameters
ip-address Enter the IP address of the BGP neighbor that you want to explicitly disable 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 disable for BFD
sessions.
Defaults None
Command Modes ROUTER BGP
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.13(0.0) Introduced support for enabling BFD on non-default VRFs for IPv4 BGP, default,
and non-default VRFs for IPv6 BGP on the S3100 series, S3048–ON, S4048–ON,
S4048T-ON, S5000, S6000, S6000–ON, S6010–ON, S6100–ON, C9010, Z9500,
and Z9100–ON.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
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.
Usage
Information
When you explicitly disable a BGP neighbor for a BFD session with the neighbor bfd disable
command:
● The neighbor does not inherit the global BFD disable values configured with the bfd neighbor
command or configured for the peer group to which the neighbor belongs.
● The neighbor only inherits the global timer values configured with the bfd neighbor command:
interval, min_rx, and multiplier.
When you remove the Disabled state of a BFD for a BGP session with a specified neighbor by entering
the no neighbor bfd disable command, the BGP link with the neighbor returns to normal
operation and uses the BFD session parameters globally configured with the bfd neighbor command
or configured for the peer group to which the neighbor belongs.
show bfd neighbors
Display BFD neighbor information on all interfaces or a specified interface.
Syntax
show bfd [vrf vrf name] neighbors [interface] [detail]
Parameters
vrf vrf name (Optional) Enter the keyword vrf and then the name of the VRF to display the
BFD sessions with all neighbors within the VRF.
Bidirectional Forwarding Detection (BFD) 341