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Bidirectional Forwarding Detection | 177
Figure 9-5. Establishing a BFD Session for Physical Ports
To establish a session:
Verify that the session is established using the command
show bfd neighbors, as shown in Figure 9-6.
Figure 9-6. Viewing Established Sessions for Physical Ports
The command show bfd neighbors detail shows more specific information about BFD sessions
(Figure 9-7).
Step Task Command Syntax Command Mode
1 Enter interface mode
interface
CONFIGURATION
2 Assign an IP address to the interface if one is not already
assigned.
ip address ip-address INTERFACE
3 Identify the neighbor with which the interface will
participate in the BFD session.
bfd neighbor ip-address
INTERFACE
R1: ACTIVE Role
R2: ACTIVE Role
Force10(config)# bfd enable
Force10(config)# interface gigabitethernet 4/24
Force10(conf-if-gi-2/1)# ip address 2.2.2.1/24
Force10(conf-if-gi-2/1)# bfd neighbor 2.2.2.2
fnC0038m
p
2/14/24
Force10(config)# bfd enable
Force10(config)# interface gigabitethernet 2/1
Force10(conf-if-gi-2/1)# ip address 2.2.2.2/24
Force10(conf-if-gi-2/1)# bfd neighbor 2.2.2.1
R1(conf-if-gi-4/24)#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 3 C
BFD Session Enabled