White Papers

● The neighbor only inherits the global timer values configured with the bfd neighbor command:
interval, min_rx, and multiplier.
Related
Commands
neighbor bfd disable — explicitly disables a BFD session with a BGP neighbor or a BGP peer group.
show bfd neighbors — displays the BFD neighbor information on all interfaces or a specified interface.
neighbor bfd disable
Explicitly disable a BFD session with a BGP neighbor or a BGP peer group.
Syntax
neighbor {ip-address | peer-group-name} bfd disable
Parameters
ip-address Enter the IP address of the BGP neighbor that you want to explicitly disable for
BFD sessions in dotted decimal format (A.B.C.D).
peer-group-name Enter the name of the peer group that you want to explicitly disable for BFD
sessions.
Defaults none
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
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 disable values configured with the bfd all-neighbor
command or configured for the peer group to which the neighbor belongs.
● The neighbor only inherits the global timer values configured with the bfd all-neighbor
command: interval, min_rx, and multiplier.
When you remove the Disabled state of a BFD for a BGP session with a specified neighbor by entering the
no neighbor bfd disable command, the BGP link with the neighbor returns to normal operation
and uses the BFD session parameters globally configured with the bfd all-neighbor command or
configured for the peer group to which the neighbor belongs.
Related
Commands
bfd all-neighbors — enables BFD sessions with all neighbors discovered by Layer 3 protocols.
show bfd neighbors — displays the BFD neighbor information on all interfaces or a specified interface.
show bfd neighbors
Display BFD neighbor information on all interfaces or a specified interface.
Syntax
show bfd [vrf vrf name] neighbors [interface] [detail]
Parameters
vrf vrf name (Optional) Enter the keyword vrf and then the name of the VRF to display the
BFD sessions with all neighbors within the VRF.
interface (OPTIONAL) Enter one of the following keywords and slot/port or number
information:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
● For a port channel interface, enter the keywords port-channel then a
number.
Bidirectional Forwarding Detection (BFD) 257