Skip to main content
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.

Dell EMC Networking OS Configuration Guide for the S5048F–ON System 9.14.2.8

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.

show bfd neighbors

*       - Active session role
Ad Dn   - Admin Down
B       - BGP
C       - CLI
I       - ISIS
O       - OSPF
O3      - OSPFv3
R       - Static Route (RTM)
M       - MPLS
V       - VRRP
VT      - Vxlan Tunnel

LocalAddr        RemoteAddr      Interface  State Rx-int Tx-int Mult   Clients
* 5.1.1.1        5.1.1.2         Po 30      Up    200    200    3        O

* 6.1.1.1        6.1.1.2         Vl 30      Up    200    200    3        O

* 7.1.1.1        7.1.1.2         Tf 1/21    Up    200    200    3        O

The following example shows the show bfd vrf neighbors command output showing the nondefault VRF.

show bfd vrf VRF_blue neighbors

*       - Active session role
Ad Dn   - Admin Down
B       - BGP
C       - CLI
I       - ISIS
O       - OSPF
O3      - OSPFv3
R       - Static Route (RTM)
M       - MPLS
V       - VRRP
VT      - Vxlan Tunnel

LocalAddr        RemoteAddr      Interface   State Rx-int Tx-int Mult VRF Clients
* 5.1.1.1        5.1.1.2         Po 30       Up    200    200    3    255    O

* 6.1.1.1        6.1.1.2         Vl 30       Up    200    200    3    255    O

* 7.1.1.1        7.1.1.2         Tf 1/1      Up    200    200    3    255    O

The following example shows the show bfd vrf neighbors detail command output showing the nondefault VRF called “VRF_blue”.

show bfd vrf VRF_blue neighbors detail

Session Discriminator: 5
Neighbor Discriminator: 3
Local Addr: 5.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 5.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: Port-channel 30
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:15
Statistics:
Number of packets received from neighbor: 78
Number of packets sent to neighbor: 78
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    

Session Discriminator: 7
Neighbor Discriminator: 2
Local Addr: 6.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 6.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: Vlan 30
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:15
Statistics:
Number of packets received from neighbor: 78
Number of packets sent to neighbor: 78
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    

Session Discriminator: 6
Neighbor Discriminator: 1
Local Addr: 7.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 7.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: twentyFiveGigE 1/21
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:14
Statistics:
Number of packets received from neighbor: 73
Number of packets sent to neighbor: 73
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    
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: TwentyfiveGigE 1/3
State: Up
Configured parameters:
 TX: 100ms, RX: 100ms, Multiplier: 3
Neighbor parameters:
 TX: 250ms, RX: 300ms, Multiplier: 4
Actual parameters:
 TX: 300ms, RX: 250ms, Multiplier: 3
Role: Active
Delete session on Down: False
Client Registered: CLI
Uptime: 00:02:04
Statistics:
 Number of packets received from neighbor: 376
 Number of packets sent to neighbor: 314
 Number of state changes: 2
 Number of messages from IFA about port state change: 0
 Number of messages communicated b/w Manager and Agent: 6
DellEMC#

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\