Concept Guide

* 11.1.1.1 11.1.1.2 Vl 101 Up 150 150 3
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* 12.1.1.1 12.1.1.2 Vl 102 Up 150 150 3
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* 13.1.1.1 13.1.1.2 Vl 103 Up 150 150 3
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 100 Up 150 150 3
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 101 Up 150 150 3
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 102 Up 150 150 3
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 103 Up 150 150 3
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DellEMC#
Changing OSPFv3 Session Parameters
Congure BFD sessions with default intervals and a default role.
The parameters that you can congure are: desired tx interval, required min rx interval, detection multiplier,
and system role. Congure these parameters for all OSPFv3 sessions or all OSPFv3 sessions on a particular interface. If you change a
parameter globally, the change aects all OSPFv3 neighbors sessions. If you change a parameter at the interface level, the change aects
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.
• 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 nal 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.
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Bidirectional Forwarding Detection (BFD)