Dell S4048T, Configuration Manual

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LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
2.2.2.1 2.2.2.2 Te 4/24 Up 100 100 4 R
To view detailed session information, use the
show bfd neighbors detail
command, as shown in the
examples in Displaying BFD for BGP Information .
Changing Static Route Session Parameters
BFD sessions are configured with default intervals and a default role.
The parameters you can configure are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and
system role. These parameters are configured for all static routes. If you change a parameter, the change
affects all sessions for static routes.
To change parameters for static route sessions, use the following command .
• Change parameters for all static route sessions.
CONFIGURATION mode
ip route bfd interval milliseconds min_rx milliseconds multiplier value role
[active | passive]
To view session parameters, use the
show bfd neighbors detail
command, as shown in the examples in
Displaying BFD for BGP Information
Disabling BFD for Static Routes
If you disable BFD, 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.
To disable BFD for static routes, use the following command.
• Disable BFD for static routes.
CONFIGURATION mode
no ip route bfd
Configure BFD for OSPF
When using BFD with OSPF, the OSPF protocol registers with the BFD manager. BFD sessions are established
with all neighboring interfaces participating in OSPF. If a neighboring interface fails, the BFD agent notifies the
BFD manager, which in turn notifies the OSPF protocol that a link state change has occurred.
Configuring BFD for OSPF is a two-step process:
1 Enable BFD globally.
2 Establish sessions with OSPF neighbors.
Related Configuration Tasks
• Changing OSPF Session Parameters
• Disabling BFD for OSPF
Bidirectional Forwarding Detection (BFD) 188