Reference Guide

152 | Bidirectional Forwarding Detection (BFD)
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Configuring BFD for port-channels is a two-step process:
1. Enable BFD globally on all participating routers. See Enabling BFD globally.
2. Enable BFD at interface level at both ends of the port-channel.
Related configuration tasks
• Change session parameters.
• Disable BFD a port-channel.
Establishing sessions on port-channels
To establish a session, BFD must be enabled at interface level on both ends of the link, as shown in the
following illustration. The session parameters do not need to match.
Figure 7-27. Establishing Sessions on Port-Channels
To establish a session on a port-channel:
View the established sessions using the command
show bfd neighbors, as shown in the following example.
Step Task Command Syntax Command Mode
1 Establish a session on a port-channel. bfd neighbor ip-address INTERFACE PORT-CHANNEL
fnC0044mp
4/24
FTOS(config-if-range-gi-4/24-5)# port-channel-protocol lacp
FTOS(config-if-range-gi-4/24-5)# port-channel 1 mode active
FTOS(config-if-range-gi-4/24-5)# no shutdown
FTOS(config-if-range-gi-4/24-5)# interface port-channel 1
FTOS(config-if-po-1)# ip address 2.2.2.1/24
FTOS(config-if-po-1)# no shutdown
FTOS(config-if-po-1)# bfd neighbor 2.2.2.2
2/1
4/25 2/2
Port Channel 1
4/24
4/25
FTOS(config-if-range-gi-2/1-2)# port-channel-protocol lacp
FTOS(config-if-range-gi-2/1-2)# port-channel 1 mode active
FTOS(config-if-range-gi-2/1-2)# no shutdown
FTOS(config-if-range-gi-2/1-2)# interface port-channel 1
FTOS(config-if-po-1)# ip address 2.2.2.2/24
FTOS(config-if-po-1)# no shutdown
FTOS(config-if-po-1)# bfd neighbor 2.2.2.1