Command Line Reference Guide

284 | Bidirectional Forwarding Detection (BFD)
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Defaults
Refer to Parameters
Command Modes
ROUTER OSPF
ROUTER ISIS (Not available on C-Series)
Command
History
Usage
Information
Any timer values specified in INTERFACE mode using the command isis bfd all-neighbors override
timer values specified in this command. Likewise, using the no form of this command will not disable
BFD on an interface if BFD is explicitly enabled in INTERFACE mode using the command isis bfd
all-neighbors.
Related
Commands
bfd neighbor
c e
Establish a BFD session with a neighbor.
Syntax
bfd neighbor ip-address
Parameters
Defaults
None
Command Modes
INTERFACE
Command
History
Related
Commands
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 8.2.1.0 OSPF and ISIS BFD introduced on E-Series ExaScale
Version 7.6.1.0 OSPF BFD introduced on C-Series
Version 7.5.1.0 ISIS BFD introduced on E-Series
Version 7.4.1.0 OSPF BFD introduced on E-Series
show bfd neighbors Display BFD neighbor information on all interfaces or a specified interface.
ip-address
Enter the IP address of the neighbor in dotted decimal format (A.B.C.D).
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on C-Series
Version 7.5.1.0 Added support for VLAN and port-channel interfaces on E-Series.
Version 7.4.1.0 Introduced on E-Series
show bfd neighbors
Display BFD neighbor information on all interfaces or a specified
interface.