Dell EMC Networking OS Configuration Guide for the S5048F–ON System 9.14.2.4

Establishing Sessions with OSPF Neighbors for the Default VRF

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.

To establish BFD with all OSPF neighbors or with OSPF neighbors on a single interface, use the following commands.

• Enable BFD globally.
  CONFIGURATION mode
  bfd enable
• Establish sessions with all OSPF neighbors.
  ROUTER-OSPF mode
  bfd all-neighbors
• Establish sessions with OSPF neighbors on a single interface.
  INTERFACE mode
  ip ospf bfd all-neighbors

R2(conf-router_ospf)#bfd all-neighbors
R2(conf-router_ospf)#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
* 2.2.2.2  2.2.2.1    Tf 1/1    Up    100    100    3    O
* 2.2.3.1  2.2.3.2    Tf 1/1    Up    100    100    3    O