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Defaults
Refer to
Parameters
.
Command
Modes
ROUTER OSPF
ROUTER OSPFv3
ROUTER BGP
ROUTER ISIS
INTERFACE (BFD for VRRP only)
Command
History
Version 9.2(0.0)
Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
All neighbors inherit the timer values configured with the
bfd neighbor
command except in the following cases:
• Timer values configured with the
isis bfd all-neighbors
commands in
INTERFACE mode override timer values configured with the
bfd neighbor
command. Likewise, using the
no bfd neighbor
command does not disable
BFD on an interface if you explicitly enable BFD using the
isis bfd all-
neighbors
command.
• Neighbors that have been explicitly enabled or disabled for a BFD session with
the
bfd neighbor
or
neighbor bfd disable
commands in ROUTER BGP
mode do not inherit the global BFD enable/disable values configured with the
bfd neighbor
command or configured for the peer group to which a
neighbor belongs. The neighbors inherit only the global timer values
(configured with the
bfd neighbor
command).
Related
Commands
show bfd neighbors
— displays BFD neighbor information on all interfaces or a
specified interface.
bfd neighbor
— explicitly enables a BFD session with a BGP neighbor or a BGP peer
group.
neighbor bfd disable
— explicitly disables a BFD session with a BGP neighbor or a
BGP peer group.
bfd disable
Disable BFD on an interface.
Syntax
bfd disable
Re-enable BFD using the
no bfd disable
command.
Defaults
BFD is disabled by default.
Bidirectional Forwarding Detection (BFD)
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