Administrator Guide

ROUTER BGP mode
no neighbor {ip-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
neighbor 2.2.2.2 no shutdown
neighbor 3.3.3.2 remote-as 1
neighbor 3.3.3.2 no shutdown
bfd all-neighbors
The following example shows viewing all BFD neighbors.
The following example shows viewing BFD neighbors with full detail.
The bold lines show the BFD session parameters: TX (packet transmission), RX (packet reception), and multiplier (maximum
number of missed packets).
The following example shows viewing configured BFD counters.
The following example shows viewing BFD summary information.
The bold line shows the message displayed when you enable BFD for BGP connections.
R2# show ip bgp summary
BGP router identifier 10.0.0.1, local AS number 2
BGP table version is 0, main routing table version 0
BFD is enabled, Interval 100 Min_rx 100 Multiplier 3 Role Active
3 neighbor(s) using 24168 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
1.1.1.2 1 282 281 0 0 0 00:38:12 0
2.2.2.2 1 273 273 0 0 (0) 04:32:26 0
3.3.3.2 1 282 281 0 0 0 00:38:12 0
The following example shows viewing BFD information for a specified neighbor.
The bold lines show the message displayed when you enable a BFD session with different configurations:
160
Bidirectional Forwarding Detection (BFD)