FTOS Configuration Guide for the C-Series - Force10 Networks

To establish a BFD session:
Step Task Command Syntax Command Mode
1 Establish BFD sessions for all neighbors that are the
next hop of a static route.
Verify that sessions have been created for static routes using the command show bfd neighbors, as shown
in Figure 428. View detailed session information using the command show bfd neighbors detail, as
shown in Figure 426.
Figure 428 Viewing Established Sessions for Static Routes
R1(conf)#ip route 2.2.3.0/24 2.2.2.2
R1(conf)#ip route bfd
R1(conf)#do show bfd neighbors
* - Active session role
Ad Dn - Admin Down
C - CLI
I - ISIS
O - OSPF
R - Static Route (RTM)
Changing static route session parameters
BFD sessions are configured with default intervals and a default role. The parameters that can be
configured 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:
View session parameters using the command show bfd neighbors detail, as shown in Figure 426 on
page 607.
Disabling BFD for static routes
ip route bfd CONFIGURATION
Step Task Command Syntax Command Mode
1 Change parameters for all static
route sessions.
BFD for Static Routes Enabled
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
2.2.2.1 2.2.2.2 Gi 4/24 Up 100 100 4 R
ip route bfd interval milliseconds min_rx
milliseconds multiplier value role [active |
passive]
CONFIGURATION
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 26 on
page 607).
FTOS Configuration Guide, version 7.7.1.0 609