Dell Force10 C150 Configuration Manual page 187

Step Task
5 Configure parameters for a BFD session
established with all neighbors discovered by
BGP.
OR
Establish a BFD session with a specified BGP
neighbor or peer group using the default BFD
session parameters.
Notes:
- When you establish a BFD session with a specified BGP neighbor or peer group using the neighbor bfd
command, the default BFD session parameters are used (interval: 100 milliseconds, min_rx: 100 milliseconds,
multiplier: 3 packets, and role: active).
- When you explicitly enable or disable a BGP neighbor for a BFD session with the neighbor bfd or neighbor
bfd disable commands:
- The neighbor does not inherit the BFD enable/disable values configured with the bfd all-neighbors 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-neighbors command (interval,
min_rx, and multiplier).
6 Repeat Steps 1 to 5 on each BGP peer participating in a BFD session.
Disabling BFD for BGP
To disable a BFD for BGP session with a specified neighbor, enter the
} bfd disable
peer-group-name
To remove the disabled state of a BFD for BGP session with a specified neighbor, enter the
{ |
ip-address peer-group-name
with the neighbor returns to normal operation and uses the BFD session parameters globally configured
bfd all-neighbors
with the
Using BFD in a BGP Peer Group
If you establish a BFD session for the members of a peer group (
in ROUTER BGP configuration mode), members of the peer group may have BFD:
• Explicitly enabled (
• Explicitly disabled (
• Inherited (neither explicitly enabled or disabled) according to the current BFD configuration of the
peer group. For information on BGP peer groups, see
If you explicitly enable (or disable) a BGP neighbor for BFD that belongs to a peer group:
• The neighbor does not inherit the BFD enable/disable values configured with the
command or configured for the peer group to which the neighbor belongs.
Command Syntax
bfd all-neighbors [interval millisecs
min_rx millisecs multiplier value role
{active | passive}]
OR
neighbor {
peer-group-name
ROUTER BGP configuration mode
command in
} bfd disable
command in
command or configured for the peer group to which the neighbor belongs.
neighbor bfd
ip-address
neighbor bfd disable
ip-address
|
ip-address
} bfd
neighbor {
ROUTER BGP
configuration mode. The BGP link
neighbor
command)
command)
Configure Peer Groups on page
Command Mode
CONFIG-ROUTER-
BGP
|
ip-address
.
no neighbor
bfd
command
peer-group-name
232.
bfd all-neighbors
Bidirectional Forwarding Detection | 187