Reference Guide
Minimum time between advertisement runs is 30 seconds
For address family: Unicast
BGP neighbor is ebgppg, peer-group external
Update packing has 4_OCTET_AS support enabled
Number of peers in this group 1
Peer-group members:
View running conguration
OS10(config-router-neighbor)# do show running-configuration bgp
!
router bgp 300
!
neighbor 3.1.1.1
inherit template ebgppg
no shutdown
!
template ebgppg
remote-as 100
Neighbor fall-over
The BGP neighbor fall-over feature reduces the convergence time while maintaining stability. When you enable fall-over, BGP tracks IP
reachability to the peer remote address and the peer local address.
When remote or peer local addresses become unreachable, BGP brings the session down with the peer. For example, if no active route
exists in the routing table for peer IPv6 destinations/local address, BGP brings the session down.
By default, the hold time governs a BGP session. Congure BGP fast fall-over on a per-neighbor or peer-group basis. BGP routers typically
carry large routing tables as frequent session resets are not desirable. If fail-over is enabled, the connection to an internal BGP peer is
immediately reset if the host route added to reach the internal peer fails.
1 Enter the neighbor IP address in ROUTER-BGP mode.
neighbor ip-address
2 Disable fast fall-over in ROUTER-NEIGHBOR mode.
no fall-over
3 Enter the neighbor IP address in ROUTER-BGP mode.
neighbor ip-address
4 Enable BGP fast fall-Over in ROUTER-NEIGHBOR mode.
fall-over
Congure neighbor fall-over
OS10(config)# router bgp 100
OS10(config-router-bgp-100)# neighbor 3.1.1.1
OS10(config-router-neighbor)# remote-as 100
OS10(config-router-neighbor)# fall-over
OS10(config-router-neighbor)# no shutdown
Verify neighbor fall-over on neighbor
OS10(config-router-neighbor)# do show ip bgp neighbors 3.1.1.1
BGP neighbor is 3.1.1.1, remote AS 100, local AS 100 internal link
BGP version 4, remote router ID 3.3.3.33
BGP state ESTABLISHED, in this state for 00:17:17
Last read 00:27:54 seconds
Hold time is 180, keepalive interval is 60 seconds
Configured hold time is 180, keepalive interval is 60 seconds
Fall-over enabled
Layer 3
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