Users Guide

remote-as 20
no shutdown
OS10(config-router-neighbor)# do show running-configuration bgp
!
router bgp 20
neighbor 11.1.1.2
password 9 f785498c228f365898c0efdc2f476b4b27c47d972c3cd8cd9b91f518c14ee42d
remote-as 20
no shutdown
Fast external fallover
Fast external fallover terminates EBGP sessions of any directly adjacent peer if the link used to reach the peer goes down. BGP
does not wait for the hold-down timer to expire.
Fast external fallover is enabled by default. To disable or re-enable it, use the [no] fast-external-fallover command.
For the fast-external-fallover command to take effect on an established BGP session, you must reset the session using
the clear ip bgp {* | peer-ipv4-address | peer-ipv6-address} command.
View fast external fallover configuration
OS10(config)# do show running-configuration bgp
!
router bgp 300
!
neighbor 3.1.1.1
remote-as 100
no shutdown
!
neighbor 3::1
remote-as 100
no shutdown
!
address-family ipv6 unicast
activate
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# show configuration
!
interface ethernet1/1/1
ip address 3.1.1.3/24
no switchport
no shutdown
ipv6 address 3::3/64
OS10(conf-if-eth1/1/1)# shutdown
OS10(conf-if-eth1/1/1)# do show ip bgp summary
BGP router identifier 11.11.11.11 local AS number 300
Neighbor AS MsgRcvd MsgSent Up/
Down State/Pfx
3.1.1.1 100 6 6
00:00:15 Active
3::1 100 8 11
00:00:15 Active
OS10(conf-if-eth1/1/1)#
View fast external fallover unconfiguration
OS10(config-router-bgp-300)# do show running-configuration bgp
!
router bgp 300
no fast-external-fallover
!
neighbor 3.1.1.1
remote-as 100
no shutdown
!
neighbor 3::1
remote-as 100
no shutdown
Layer 3
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