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Administrator Guide

ManualsBrandsDell ManualsAccess PlatformsC9010 Modular Chassis Switch
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* 11.1.1.1 11.1.1.2 Vl 101 Up 150 150
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* 12.1.1.1 12.1.1.2 Vl 102 Up 150 150
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* 13.1.1.1 13.1.1.2 Vl 103 Up 150 150
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 100 Up 150 150
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 101 Up 150 150
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 102 Up 150 150
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* fe80::2a0:c9ff:fe00:2 fe80::3617:98ff:fe34:12 Vl 103 Up 150 150
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Dell#
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
Establishing Sessions with OSPFv3 Neighbors
You can establish BFD sessions with all OSPFv3 neighbors at once or with all neighbors out of a specific interface. Sessions are
only established when the OSPFv3 adjacency is in the Full state.
To establish BFD with all OSPFv3 neighbors or with OSPFv3 neighbors on a single interface, use the following commands.
● Establish sessions with all OSPFv3 neighbors.
ROUTER-OSPFv3 mode
bfd all-neighbors
● Establish sessions with OSPFv3 neighbors on a single interface.
INTERFACE mode
ipv6 ospf bfd all-neighbors
To view the established sessions, use the show bfd neighbors command.
Configure BFD for IS-IS
When using BFD with IS-IS, the IS-IS protocol registers with the BFD manager. BFD sessions are then established with all
neighboring interfaces participating in IS-IS. If a neighboring interface fails, the BFD agent on the line card notifies the BFD
manager, which in turn notifies the IS-IS protocol that a link state change occurred.
Configuring BFD for IS-IS is a two-step process:
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Bidirectional Forwarding Detection (BFD)