CONFIG-ROUTER-BGP mode
neighbor {ip-address | peer-group-name} fail-over
Example of Verifying that Fast Fail-Over is Enabled on a BGP Neighbor
Example of Verifying that Fast Fail-Over is Enabled on a Peer-Group
To verify fast fail-over is enabled on a particular BGP neighbor, use the show ip bgp neighbors
command. Because fast fail-over is disabled by default, it appears only if it has been enabled (shown in
bold).
Dell#sh ip bgp neighbors
BGP neighbor is 100.100.100.100, remote AS 65517, internal link
Member of peer-group test for session parameters
BGP version 4, remote router ID 30.30.30.5
BGP state ESTABLISHED, in this state for 00:19:15
Last read 00:00:15, last write 00:00:06
Hold time is 180, keepalive interval is 60 seconds
Received 52 messages, 0 notifications, 0 in queue
Sent 45 messages, 5 notifications, 0 in queue
Received 6 updates, Sent 0 updates
Route refresh request: received 0, sent 0
Minimum time between advertisement runs is 5 seconds
Minimum time before advertisements start is 0 seconds
Capabilities received from neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
CISCO_ROUTE_REFRESH(128)
Capabilities advertised to neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
CISCO_ROUTE_REFRESH(128)
fail-over enabled
Update source set to Loopback 0
Peer active in peer-group outbound optimization
For address family: IPv4 Unicast
BGP table version 52, neighbor version 52
4 accepted prefixes consume 16 bytes
Prefix advertised 0, denied 0, withdrawn 0
To verify that fast fail-over is enabled on a peer-group, use the show ip bgp peer-group command
(shown in bold).
Dell#sh ip bgp peer-group
Peer-group test
fail-over enabled
BGP version 4
Minimum time between advertisement runs is 5 seconds
For address family: IPv4 Unicast
BGP neighbor is test
Number of peers in this group 1
Peer-group members (* - outbound optimized):
202 Border Gateway Protocol IPv4 (BGPv4)