Reference Guide
176 | Bidirectional Forwarding Detection
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Establishing sessions for static routes
Sessions are established for all neighbors that are the next hop of a static route.
Figure 11-5. Enabling BFD for Static Routes
To establish a BFD session:
Verify that sessions have been created for static routes using the command
show bfd neighbors, as shown
in the example below. View detailed session information using the command
show bfd neighbors detail, as
shown in the example in Changing physical port session parameters.
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)
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
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.
Step Task Command Syntax Command Mode
1 Establish BFD sessions for all neighbors that are the next hop
of a static route.
ip route bfd CONFIGURATION
2.2.2.1/24
fnC0039m
p
4/24
2/1
2/2
6/0
FTOS(config)# interface gigabitethernet 2/2
FTOS(conf-if-gi-2/2)# ip address 2.2.3.1/24
FTOS(conf-if-gi-2/2)# no shutdown
FTOS(config)# interface gigabitethernet 4/24
FTOS(conf-if-gi-4/24)# ip address 2.2.2.1/24
FTOS(conf-if-gi-4/24)# no shutdown
FTOS(config)# ip route 2.2.3.0/24 2.2.2.2
FTOS(config)# ip route bfd
FTOS(config)# interface gigabitethernet 6/0
FTOS(conf-if-gi-6/0)# ip address 2.2.3.2/24
FTOS(conf-if-gi-6/0)# no shutdown
FTOS(config)# interface gigabitethernet 2/1
FTOS(conf-if-gi-2/1)# ip address 2.2.2.2/24
FTOS(conf-if-gi-2/1)# no shutdown
FTOS(conf-if-gi-2/1)# bfd neighbor 2.2.2.1
R1
2.2.3.2/24
2.2.3.1/242.2.2.2/24
R2
R3