FTOS Configuration Guide for the C-Series - Force10 Networks

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.
Figure 429 Establishing Sessions with OSPF Neighbors
Force10(conf-if-gi-2/1)# ip address 2.2.2.2/24
Force10(conf-if-gi-2/1)# no shutdown
Force10(conf-if-gi-2/1)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.2.0/24 area 0
Force10(config-router_ospf )# bfd all-neighbors
AREA 0 AREA 1
4/24 2/1 2/2 6/0
2.2.2.1/24 2.2.2.2/24 2.2.3.1/24
2.2.3.2/24
Force10(conf-if-gi-4/24)# ip address 2.2.2.1/24
Force10(conf-if-gi-4/24)# no shutdown
Force10(conf-if-gi-4/24)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.2.0/24 area 0
Force10(config-router_ospf )# bfd all-neighbors
To establish BFD with all OSPF neighbors:
Step Task Command Syntax Command Mode
1 Establish sessions with all OSPF neighbors. bfd all-neighbors ROUTER-OSPF
To establish BFD for all OSPF neighbors on a single interface:
Step Task Command Syntax Command Mode
1 Establish sessions with all OSPF neighbors on a
single interface.
Force10(conf-if-gi-2/2)# ip address 2.2.3.1/24
Force10(conf-if-gi-2/2)# no shutdown
Force10(conf-if-gi-2/2)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.3.0/24 area 1
Force10(config-router_ospf )# bfd all-neighbors
R1 R2
R3
Force10(conf-if-gi-6/0)# ip address 2.2.3.2/24
Force10(conf-if-gi-6/0)# no shutdown
Force10(conf-if-gi-6/0)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.3.0/24 area 1
Force10(config-router_ospf )# bfd all-neighbors
R4
2.2.4.2/24
6/1
2.2.4.1/24
fnC0040mp
ip ospf bfd all-neighbors INTERFACE
View the established sessions using the command show bfd neighbors, as shown in Figure 430.
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Force10(conf-if-gi-6/0)# ip address 2.2.4.2/24
Force10(conf-if-gi-6/0)# no shutdown
Force10(conf-if-gi-6/0)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.4.0/24 area 1
Force10(config-router_ospf )# bfd all-neighbors
Force10(conf-if-gi-6/1)# ip address 2.2.4.1/24
Force10(conf-if-gi-6/1)# no shutdown
Force10(conf-if-gi-6/1)# exit
Force10(config)# router ospf 1
Force10(config-router_ospf )# network 2.2.4.0/24 area 1
Force10(config-router_ospf )# bfd all-neighbors