Administrator Guide

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)
fall-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Prefix advertised 0, denied 0, withdrawn 0
Connections established 6; dropped 5
Last reset 00:19:37, due to Reset by peer
Notification History
'Connection Reset' Sent : 5 Recv: 0
Local host: 20.20.20.2, Local port: 65519
Foreign host: 10.10.10.1, Foreign port: 179
DellEMC#
To verify that fast fall-over is enabled on a peer-group, use the show ip bgp peer-group command (shown in bold).
DellEMC#show ip bgp peer-group
Peer-group test
fall-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):
10.10.10.1*
DellEMC#
router bgp 400
neighbor test peer-group
neighbor test fall-over
neighbor test no shutdown
neighbor 10.10.10.1 remote-as 500
neighbor 10.10.10.1 fall-over
neighbor 10.10.10.1 update-source Loopback 0
neighbor 10.10.10.1 no shutdown
DellEMC#
Configuring Passive Peering
When you enable a peer-group, the software sends an OPEN message to initiate a TCP connection.
If you enable passive peering for the peer group, the software does not send an OPEN message, but it responds to an OPEN
message.
Border Gateway Protocol (BGP)
201