Deployment Guide

bfd protocol-liveness
Enable the BFD protocol liveness feature.
Syntax
bfd protocol-liveness
Defaults Disabled
Command Modes CONFIGURATION
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
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.10.0 Introduced on the S4810.
7.4.1.0 Introduced on the E-Series.
Usage
Information
Protocol Liveness is a feature that notifies the BFD Manager when a client protocol (for example,
OSPF and ISIS) is disabled. When a client is disabled, all BFD sessions for that protocol are torn down.
Neighbors on the remote system receive an Admin Down control packet and are placed in the Down state.
Peer routers might take corrective action by choosing alternative paths for the routes that originally
pointed to this router.
bfd save-downsession
Enable to save the BFD down sessions.
Syntax
bfd save-downsession
To disable the configuration, use no bfd save-downsession command.
Defaults Disabled
Command Modes CONFIGURATION
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
9.14(1.5) Introduced on the S3048–ON, S4048–ON, S4048T-ON, S6010–ON, and Z9100–
ON.
Usage
Information
Although the Dell EMC Networking OS help does not display the save-downsession keyword under
bfd configuration, the command works if you manually type it in the CLI prompt.
Dell EMC Networking OS saves the BFD down sessions. Use remote-exec cp p bfdm call
bfdmPrintDownSess command to view all the BFD down sessions and remote-exec cp p bfdm
call bfdmPrintNbrDnSess command to view the BFD down sessions for a BFD neighbor.
314 Bidirectional Forwarding Detection (BFD)