Install Guide

If neighbor soft-reconfiguration inbound command is not configured ever in the router, then doing a soft reset is
enough for the route-refresh updates to be sent.
Route-refresh updates for IPv4 and IPv6 prefixes
This section explains the route-refresh functionality in different combinations for IPv4 or IPv6 prefix configured with IPv4 or
IPv6 neighbors.
By default, the IPv4 prefixes is sent for all the neighbors irrespective of IPv4 address family is enabled or disabled. Following are
the different scenarios during which the route-refresh message is sent for the corresponding neighbors:
By default, the route-refresh message for IPv4 prefixes is sent for both the IPv4 and IPv6 neighbors. Following is an example
configuration in which IPv4 prefixes are enabled by default and the corresponding route-refresh message:
DellEMC(conf-router_bgp)# show config
!
router bgp 100
redistribute connected
neighbor 20.1.1.2 remote-as 200
neighbor 20.1.1.2 no shutdown
neighbor 20::2 remote-as 200
neighbor 20::2 no shutdown
!
address-family ipv6 unicast
redistribute connected
exit-address-family
!
DellEMC(conf-router_bgp)#do clear ip bgp 20.1.1.2 soft in
May 8 15:28:11 : BGP: 20.1.1.2 sending ROUTE_REFRESH AFI/SAFI (1/1)
May 8 15:28:12 : BGP: 20.1.1.2 UPDATE rcvd packet len 56
May 8 15:28:12 : BGP: 20.1.1.2 rcvd UPDATE w/ attr: origin ?, path 200, nexthop
20.1.1.2, metric 0,
<output truncated>
DellEMC(conf-router_bgp)#do clear ip bgp 20::2 soft in
May 8 15:28:04 : BGP: 20::2 sending ROUTE_REFRESH AFI/SAFI (1/1)
May 8 15:28:04 : BGP: 20::2 UPDATE rcvd packet len 56
May 8 15:28:04 : BGP: 20::2 rcvd UPDATE w/ attr: origin ?, path 200, nexthop 20.1.1.2,
metric 0,
<output truncated>
In the below example, under the IPv6 address family configuration, only the IPv6 neighbor is enabled using neighbor ipv6–
address activate command. If you execute, clear ip bgp neighbor-ipv4–address soft in command, only the
IPv4 route-refresh update is sent. If you execute clear ip bgp neighbor-ipv6–address soft incommand, both the
IPv4 and IPv6 route-refresh updates are sent. Following is an example configuration in which IPv6 prefixes is enabled for a IPv6
neighbor and the corresponding route-refresh message:
DellEMC(conf-router_bgp)# show config
!
router bgp 100
redistribute connected
neighbor 20.1.1.2 remote-as 200
neighbor 20.1.1.2 no shutdown
neighbor 20::2 remote-as 200
neighbor 20::2 no shutdown
!
address-family ipv6 unicast
redistribute connected
neighbor 20::2 activate
exit-address-family
!
DellEMC(conf-router_bgp)#do clear ip bgp 20.1.1.2 soft in
May 8 15:28:11 : BGP: 20.1.1.2 sending ROUTE_REFRESH AFI/SAFI (1/1)
May 8 15:28:12 : BGP: 20.1.1.2 UPDATE rcvd packet len 56
May 8 15:28:12 : BGP: 20.1.1.2 rcvd UPDATE w/ attr: origin ?, path 200, nexthop
20.1.1.2, metric 0,
<output truncated>
192
Border Gateway Protocol (BGP)