Glossary
!
router bgp 1
!
address-family ipv4 vrf vrf1
neighbor 10.1.1.2 remote-as 2
neighbor 10.1.1.2 no shutdown
neighbor 20::2 remote-as 2
neighbor 20::2 no shutdown
bfd all-neighbors
exit-address-family
!
address-family ipv6 unicast vrf vrf1
neighbor 20::2 activate
exit-address-family
DellEMC(conf-router_bgp)#
Disabling BFD for BGP
You can disable BFD for BGP.
To disable a BFD for BGP session with a specified neighbor, use the first command. To remove the disabled state of a BFD for
BGP session with a specified neighbor, use the second command.
The BGP link with the neighbor returns to normal operation and uses the BFD session parameters globally configured with the
bfd all-neighbors command or configured for the peer group to which the neighbor belongs.
● Disable a BFD for BGP session with a specified neighbor.
ROUTER BGP mode
neighbor {ip-address | ipv6–address |peer-group-name} bfd disable
● Remove the disabled state of a BFD for BGP session with a specified neighbor.
ROUTER BGP mode
no neighbor {ip-address | ipv6–address | peer-group-name} bfd disable
Displaying BFD for BGP Information
You can display related information for BFD for BGP.
To display information about BFD for BGP sessions on a router, use the following commands and refer to the following
examples.
● Verify a BFD for BGP configuration.
EXEC Privilege mode
show running-config bgp
● 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.
EXEC Privilege mode
show bfd neighbors [interface] [detail]
● Check to see if BFD is enabled for BGP connections.
EXEC Privilege mode
show ip bgp summary
● Displays routing information exchanged with BGP neighbors, including BFD for BGP sessions.
EXEC Privilege mode
show ip bgp neighbors [ip-address]
The following example shows verifying a BGP configuration.
R2# show running-config bgp
!
router bgp 2
neighbor 1.1.1.2 remote-as 1
neighbor 1.1.1.2 no shutdown
neighbor 2.2.2.2 remote-as 1
Bidirectional Forwarding Detection (BFD)
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