Reference Guide

264 | Bidirectional Forwarding Detection (BFD)
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bfd all-neighbors
c e z
Enable BFD sessions with all neighbors discovered by Layer 3 protocols IS-IS,
OSPF, or BGP on router interfaces, and (optionally) reconfigure the default timer
values.
Syntax
bfd all-neighbors
[interval interval min_rx min_rx multiplier value role {active | passive}]
Parameters
Defaults
Parameters
Command Modes
ROUTER OSPF
ROUTER BGP
ROUTER ISIS (Not available on C-Series)
Command
History
interval milliseconds
(OPTIONAL) Enter this keyword to specify non-default BFD
session parameters beginning with the transmission interval.
Range: 50 to 1000
Default: 100
min_rx milliseconds
Enter this keyword to specify the minimum rate at which the local
system would like to receive control packets from the remote system.
Range: 50 to 1000
Default: 100
multiplier value
Enter this keyword to specify the number of packets that must be
missed in order to declare a session down.
Range: 3 to 50
Default: 3
role [active | passive] Enter the role that the local system assumes:
• Active—The active system initiates the BFD session. Both
systems can be active for the same session.
• Passive—The passive system does not initiate a session. It only
responds to a request for session initialization from the active
system.
Default: Active
Version 9.0.0.0 BFD for BGP was introduced on the Z9000.
Version 8.3.8.0 BFD for BGP was introduced on the S4810.
Version 8.4.1.3 BFD for BGP was introduced on the E-Series ExaScale.
Version 8.2.1.0 BFD for OSPF and ISIS introduced on the E-Series ExaScale.
Version 7.6.1.0 BFD for OSPF introduced on the C-Series.
Version 7.5.1.0 BFD for ISIS introduced on the E-Series.
Version 7.4.1.0 BFD for OSPF introduced on the E-Series.