Reference Guide

Bidirectional Forwarding Detection | 177
To change parameters for static route sessions:
View session parameters using the command
show bfd neighbors detail, as shown in the example in
Changing physical port session parameters.
Disabling BFD for static routes
If BFD is disabled, all static route BFD sessions are torn down. A final Admin Down packet is sent to all
neighbors on the remote systems, and those neighbors change to the Down state (Message 3).
To disable BFD for static routes:
Configuring BFD for OSPF
When using BFD with OSPF, the OSPF protocol registers with the BFD manager on the RPM. BFD
sessions are established with all neighboring interfaces participating in OSPF. If a neighboring interface
fails, the BFD agent on the line card notifies the BFD manager, which in turn notifies the OSPF protocol
that a link state change occurred.
Configuring BFD for OSPF is a two-step process:
1. Enable BFD globally. Refer to Enabling BFD globally.
2. Establish sessions for all or particular OSPF neighbors. Refer to Establishing sessions with OSPF
neighbors.
Related configuration tasks
• Changing OSPF session parameters.
• Disabling BFD for OSPF.
Establishing sessions with OSPF neighbors
BFD sessions can be established with all OSPF neighbors at once, or sessions can be established with all
neighbors out of a specific interface. Sessions are only established when the OSPF adjacency is in the full
state.
Step Task Command Syntax Command Mode
1 Change parameters for
all static route sessions.
ip route bfd interval milliseconds min_rx milliseconds
multiplier value role [active | passive]
CONFIGURATION
Step Task Command Syntax Command Mode
1 Disable BFD for static routes. no ip route bfd CONFIGURATION