Dell Force10 S4810P Configuration Manual page 160

To remove the disabled state of a BFD for BGP session with a specified neighbor, enter the
{ip-address | peer-group-name} bfd disable
with the neighbor returns to normal operation and uses the BFD session parameters globally configured
with the
bfd all-neighbors
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, refer to
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.
• The neighbor inherits only the global timer values that are configured with the
command (interval, min_rx, and multiplier).
If you explicitly enable (or disable) a peer group for BFD that has no BFD parameters configured (e.g.
advertisement interval) using the
BFD settings configured with the
Displaying BFD for BGP Information
To display information about BFD for BGP sessions on a router, enter one of the following
commands:
Task
Verify a BFD for BGP configuration.
Verify that a BFD for BGP session has been
successfully established with a BGP neighbor. A
line-by-line listing of established BFD
adjacencies is displayed.
Check to see if BFD is enabled for BGP
connections.
Displays routing information exchanged with
BGP neighbors, including BFD for BGP
sessions.
The following examples show the BFD for BGP output displayed for these
160
| Bidirectional Forwarding Detection (BFD)
command in
command or configured for the peer group to which the neighbor belongs.
command)
neighbor ip-address bfd
neighbor ip-address bfd disable
neighbor peer-group-name bfd
bfd all-neighbors
Command
show running-config bgp
Verifying a BFD for BGP Configuration
show bfd neighbors [interface] [detail]
Verifying BFD sessions with BGP neighbors
using show bfd neighbors
BFD sessions with BGP neighbors using
show bfd neighbors detail
show ip bgp summary
Displaying BFD for BGP status
show ip bgp neighbors [ip-address]
Displaying Routing Sessions with BGP
neighbors
configuration mode. The BGP link
ROUTER BGP
neighbor peer-group-name bfd
command)
Configure Peer
command, the peer group inherits any
command.
and Verifying
show
no neighbor
command
Groups.
bfd all-neighbors
bfd all-neighbors
show
Command Mode
EXEC Privilege
EXEC Privilege
EXEC Privilege
EXEC Privilege
commands.