Administrator Guide

* - 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 Gi 2/1 Up 100 100 3 O
* 2.2.3.1 2.2.3.2 Gi 2/2 Up 100 100 3 O
Establishing Sessions with OSPF Neighbors for nondefault VRFs
To configure BFD in a nondefault VRF, follow this procedure:
• Enable BFD globally.
CONFIGURATION mode
bfd enable
• Establish sessions with all OSPF neighbors in a specific VRF.
ROUTER-OSPF mode
bfd all-neighbors
• Establish sessions with OSPF neighbors on a single interface in a specific VRF.
INTERFACE mode
ip ospf bfd all-neighbors
• to disable BFD on a specific OSPF enabled interface, use the ip ospf bfd all-neighbors disable command. You can also
use the no bfd enable command to disable BFD on a specific interface.
The following example shows the configuration to establish sessions with all OSPF neighbors in a specific VRF:
router ospf 20 vrf VRF_blue
bfd all-neighbors
!
The following example shows the configuration to establish sessions with all OSPF neighbors on a single interface in a specific VRF:
int vlan 20
ip vrf forwarding vrf VRF_blue
ip ospf bfd all-neighbors
The following example shows the show bfd neighbors command output.
DellEMC# show bfd neighbors
* - Active session role
Ad Dn - Admin Down
B - BGP
C - CLI
I - ISIS
O - OSPF
O3 - OSPFv3
R - Static Route (RTM)
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
* 10.1.3.2 10.1.3.1 Gi 1/3 Up 300 250 3 C
DellEMC# show bfd neighbors detail
Session Discriminator: 1
Neighbor Discriminator: 1
Local Addr: 10.1.3.2
Local MAC Addr: 00:01:e8:02:15:0e
Remote Addr: 10.1.3.1
Remote MAC Addr: 00:01:e8:27:2b:f1
Int: GigabitEthernet 1/3
State: Up
138
Bidirectional Forwarding Detection (BFD)