Reference 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 Te 2/1 Up 100 100 3 O
* 2.2.3.1 2.2.3.2 Te 2/2 Up 100 100 3 O
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 OSPFv3 sessions on that interface.
To change parameters for all OSPFv3 sessions or for OSPFv3 sessions on a single interface, use the following commands.
To view session parameters, use the show bfd neighbors detail command, as shown in the example in Displaying BFD
for BGP Information.
● Change parameters for all OSPFv3 sessions.
ROUTER-OSPFv3 mode
bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role [active
| passive]
● Change parameters for OSPFv3 sessions on a single interface.
INTERFACE mode
ipv6 ospf bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value
role [active | passive]
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.
● Disable BFD sessions with all OSPFv3 neighbors.
ROUTER-OSPFv3 mode
no bfd all-neighbors
● Disable BFD sessions with OSPFv3 neighbors on a single interface.
INTERFACE mode
ipv6 ospf bfd all-neighbors disable
Configure BFD for OSPFv3
BFD for OSPFv3 provides support for IPV6.
Configuring BFD for OSPFv3 is a two-step process:
1. Enable BFD globally.
2. Establish sessions with OSPFv3 neighbors.
Bidirectional Forwarding Detection (BFD)
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