1. Enable the BFD globally. Refer to Enabling BFD Globally.
2. Establish sessions with VLAN neighbors. Refer to Establish Sessions with VLAN Neighbors.
Related Configuration Task
• Changing VLAN Session Parameters.
• Disabling BFD for VLANs.
Establish Sessions with VLAN Neighbors
To establish a session, enable BFD at interface level on both ends of the link, as shown in the following
illustration. The session parameters do not need to match.
Figure 15. Establishing Sessions with VLAN Neighbors
To establish a BFD session with a VLAN neighbor, follow this step.
• Establish sessions with a VLAN neighbor.
INTERFACE VLAN mode
bfd neighbor ip-address
View the established sessions using the show bfd neighbors command, as shown in the following
example.
R2(conf-if-vl-200)#bfd neighbor 2.2.3.2
R2(conf-if-vl-200)#do show bfd neighbors
* - Active session role
Ad Dn - Admin Down
C - CLI
I - ISIS
O - OSPF
R - Static Route (RTM)
V - VRRP
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
* 2.2.3.2 2.2.3.1
Vl 200 Up 100 100 3 C
170
Bidirectional Forwarding Detection (BFD)
