Reference Guide

268 | Bidirectional Forwarding Detection (BFD)
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Related
Commands
bfd protocol-liveness
e
Enable the BFD protocol liveness feature.
Syntax
bfd protocol-liveness
Disable the protocol liveness feature using the command no 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 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 32 for EtherScale, 1 to 255 for TeraScale and 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).