API Guide

ipv6 ospf ospf-instance area area-address
VRF CONFIGURATION Mode
6. Establish BFD session with OSPFv3 neighbors in a single OSPF interface in a non-default VRF instance.
ipv6 ospf bfd all-neoghbors
VRF CONFIGURATION Mode
7. Enter ROUTER-OSPF mode in a non-default VRF instance.
router ospf ospf-instance vrf vrf-name
CONFIGURATION Mode
8. Establish BFD sessions with all OSPFv2 instances in a non-default VRF.
bfd all-neighbors
Changing OSPFv3 session parameters
Configure BFD sessions with default intervals and a default role.
The parameters that you can configure are: desired tx interval, required min rx interval, detection multiplier, and system role.
Configure these parameters for all OSPFv3 sessions or all OSPFv3 sessions on a particular interface. If you change a parameter
globally, the change affects all OSPFv3 neighbors sessions. If you change a parameter at the interface level, the change affects
all OSPF sessions on that interface.
NOTE: By default, OSPF uses the following BFD parameters for it's neighbors: min_tx = 200 msec, min_rx = 200 msec,
multiplier = 3, role = active. If BFD is configured under interface context, that will be given high priority.
To change parameters for all OSPFv3 sessions or for OSPF sessions on a single interface, use the following commands:
1. Change parameters for OSPF sessions.
bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role [active
| passive]
ROUTER-OSPFv3 Mode
2. Change parameters for all OSPF sessions on an interface.
ipv6 ospf bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value
role [active | passive]
INTERFACE CONFIGURATION Mode
Disabling BFD for OSPFv3
If you disable BFD globally, all sessions are torn down and sessions on the remote system are placed in a Down state. If you
disable BFD on an interface, sessions on the interface are torn down and sessions on the remote system are placed in a Down
state. Disabling BFD does not trigger a change in BFD clients; a final Admin Down packet is sent before the session is
terminated.
To disable BFD sessions, use the following commands:
1. Disable BFD sessions with all OSPF neighbors.
no bfd all-neighbors
ROUTER-OSPFv3 Mode
2. Disable BFD sessions with all OSPF neighbors on an interface.
ipv6 ospf bfd all-neighbors disable
INTERFACE CONFIGURATION Mode
To re-enable BFD, disabled the interface alone using the following commands:
● no ipv6 ospf bfd all-neighbors command
● ipv6 ospf bfd all-neighbors
Layer 3
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