Setup Guide

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>
DellEMC(conf-router_bgp)#do clear ip bgp 20::2 soft in
May 8 15:40:08 : BGP: 20::2 sending ROUTE_REFRESH AFI/SAFI (1/1)
May 8 15:40:08 : BGP: 20::2 sending ROUTE_REFRESH AFI/SAFI (2/1)
May 8 15:40:08 : BGP: 20::2 UPDATE rcvd packet len 56
May 8 15:40:08 : BGP: 20::2 rcvd UPDATE w/ attr: origin ?, path 200, nexthop 20.1.1.2,
metric 0,
Controlling route-refresh updates
You can control route-refresh updates for IPv4 and IPv6 prefixes.
Following is the list of commands to control the route-refresh updates for IPv4 and IPv6 prefixes:
Table 11. Command for respective route-refresh updates
Command Route-refresh Updates
clear ip bgp neighbor-ipv4-address ipv4 unicast soft in
Only IPv4 route-refresh updates using
IPv4 neighbor
clear ip bgp neighbor-ipv6-address ipv6 unicast soft in
Only IPv6 route-refresh updates using
IPv6 neighbor
clear ip bgp neighbor-ipv4-address ipv6 unicast soft in
Only IPv6 route-refresh updates using
IPv4 neighbor
clear ip bgp neighbor-ipv6-address ipv4 unicast soft in
Only IPv4 route-refresh updates using
IPv6 neighbor
Aggregating Routes
Dell EMC Networking OS provides multiple ways to aggregate routes in the BGP routing table. At least one specific route of the
aggregate must be in the routing table for the configured aggregate to become active.
To aggregate routes, use the following command.
AS_SET includes AS_PATH and community information from the routes included in the aggregated route.
● Assign the IP address and mask of the prefix to be aggregated.
CONFIG-ROUTER-BGP mode
aggregate-address ip-address mask [advertise-map map-name] [as-set] [attribute-map map-
name] [summary-only] [suppress-map map-name]
188
Border Gateway Protocol (BGP)