Reference Guide

282 | Bidirectional Forwarding Detection (BFD)
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Related
Commands
bfd protocol-liveness
e
Enable the BFD protocol liveness feature.
Syntax
bfd protocol-liveness
Defaults
Disabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
Protocol Liveness is a feature that notifies the BFD Manager when a client protocol (e.g
OSPF, ISIS) is disabled. When a client is disabled, all BFD sessions for that protocol are torn
down. Neighbors on the remote system receive an Admin Down control packet and are placed
in the Down state. Peer routers might take corrective action by choosing alternative paths for
the routes that originally pointed to this router.
clear bfd counters
c e
Clear all BFD counters, or counters for a particular interface.
Syntax
clear bfd counters
[interface]
Parameters
Defaults
None
Command Modes
EXEC Privilege
show bfd neighbors Display BFD neighbor information on all interfaces or a specified
interface.
Version 8.3.10.0 Introduced on S4810
Version 7.4.1.0 Introduced on E-Series
interface
(OPTIONAL) Enter one of the following keywords and slot/port or number
information:
• For a 1-Gigabit Ethernet interface, enter the keyword gigabitethernet
followed by the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword
tengigabitethernet followed by the slot/port information.
• For a SONET interface, enter the keyword sonet followed by the slot/
port information.
• For a port-channel interface, enter the keyword port-channel followed
by a number:
C-Series and S-Series Range: 1-128
E-Series Range: 1 to 255 for TeraScale, and 1 to 512 for ExaScale
• For VLAN interfaces, enter the keyword vlan followed by a number
from 1 to 4094. For ExaScale VLAN interfaces, the range is 1-2730
(VLAN IDs can be 0-4093).