The default is
active
.
Defaults
Refer to
Parameters
.
Command
Modes
ROUTER OSPF
ROUTER OSPFv3
ROUTER BGP
ROUTER ISIS
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant
Dell Networking OS Command Line Reference Guide
.
The following is a list of the Dell Networking OS version history for this command.
Version 9.0.2.0
Introduced on the S6000.
Version 9.2.
(0.0)
Introduced BFD for VRRP and OSPFv3 on Z9000, S4810, and
S4820T.
Version 9.0.0.0
Introduced BFD for BGP on the Z9000.
Version
8.3.19.0
Introduced on the S4820T.
Version 8.3.8.0
Introduced BFD for BGP on the S4810.
Version 8.4.1.3
Introduced BFD for BGP on the E-Series ExaScale.
Version 8.2.1.0
Introduced BFD for OSPF and ISIS on the E-Series ExaScale.
Version 7.6.1.0
Introduced BFD for OSPF on the C-Series.
Version 7.5.1.0
Introduced BFD for ISIS on the E-Series.
Version 7.4.1.0
Introduced BFD for OSPF on the E-Series.
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
or
ip ospf
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).
You can only enable BFD for VRRP in INTERFACE command mode (
vrrp bfd
all-neighbors
).
304
Bidirectional Forwarding Detection (BFD)
Summary of Contents for Networking S6000 System
Page 1: ...Dell Command Line Reference Guide for the S6000 System 9 5 0 0 ...
Page 558: ...Version 8 3 10 0 Introduced on the S4810 558 Equal Cost Multi Path ECMP ...
Page 579: ...Version 8 3 12 0 Introduced on the S4810 FCoE Transit 579 ...
Page 1331: ...Gi 3 40 configured rate 16384 actual rate 16384 sub sampling rate 1 Dell sFlow 1331 ...
Page 1480: ...Version 8 3 8 0 Introduced on the S4810 1480 Virtual Link Trunking VLT ...