Command Line Reference Guide

Bidirectional Forwarding Detection (BFD) | 313
Command Modes
ROUTER BGP
Command
History
Usage
Information
When you explicitly disable a BGP neighbor for a BFD session with the neighbor bfd disable
command, the neighbor does not inherit the global BFD values configured with the bfd all-neighbors
command or configured for the peer group to which the neighbor belongs.
When you remove the disabled state of a BFD for BGP session with a specified neighbor by entering
the no neighbor bfd disable command, the BGP neighbor uses the BFD session parameters globally
configured with the bfd all-neighbors command or configured for the peer group to which the neighbor
belongs.
Related
Commands
show bfd counters
c e
Display BFD counter information.
Syntax
show bfd counters [bgp | isis | ospf | vrrp | static-route] [interface]
Parameters
Version 8.4.2.5 Introduced on the C-Series and E-Series TeraScale.
Version 8.3.8.0 Introduced on the S4810.
Version 8.3.7.0 Introduced on the S4810.
Version 8.4.1.3 Introduced on the E-Series ExaScale.
bfd all-neighbors Enable BFD sessions with all neighbors discovered by Layer 3 protocols.
bfd neighbor Explicitly enable a BFD session with a BGP neighbor or a BGP peer group.
show bfd neighbors Display BFD neighbor information on all interfaces or a specified interface.
interface
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 40-Gigabit Ethernet interface, enter the keyword
fortyGigE
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 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).
bgp
(OPTIONAL) Enter this keyword to display counter information for BFD
sessions established with BGP neighbors.
isis
(OPTIONAL) Enter this keyword to display counter information for BFD
sessions established with ISIS neighbors. This option is not available on
C-Series.
ospf
(OPTIONAL) Enter this keyword to display counter information for BFD
sessions established with OSPF neighbors.