Install Guide

neighbor {ip-address | ipv6–address | peer-group-name} activate
NOTE: Neighbors have to be activated using neighbor activate command in the respective address family.
To exchange other address prefix types (IPv4 multicast or IPv6 unicast), the neighbors must be activated under
the respective address family configuration such as address-family ipv4 multicast (for IPv4 multicast)
andaddress-family ipv6 unicast(for IPv6).
DellEMC(conf)# router bgp 10
DellEMC(conf-router_bgp)# neighbor 20.20.20.1 remote-as 200
DellEMC(conf-router_bgp)# neighbor 20.20.20.1 no shutdown
DellEMC(conf-router_bgp)# address-family ipv4 multicast
DellEMC(conf-router_bgp_af)# neighbor 20.20.20.1 activate
DellEMC(conf-router_bgp_af)# exit
Following is the sample output of show ip bgp ipv4 multicast summary command.
DellEMC# show ip bgp ipv4 multicast summary
BGP router identifier 1.1.1.1, local AS number 10
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
1 neighbor(s) using 8192 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 200 0 0 0 0 0 00:00:00 0
DellEMC#
Example-Configuring BGP routing between peers
The following example show how BGP is configured between two peers.
Figure 23. BGP topology with two AS
To support your own IP addresses, interfaces, names, and so on, you can copy and paste from these examples to your CLI. Be
sure that you make the necessary changes.
Example-Configuring BGP routing between peers
Example of enabling BGP in Router A
Following is an example to enable BGP configuration in the router A.
RouterA# configure terminal
RouterA(conf)# router bgp 40000
RouterA(conf-router_bgp)# bgp router-id 10.1.1.99
RouterA(conf-router_bgp)# timers bgp 80 130
RouterA(conf-router_bgp)# neighbor 192.168.1.1 remote-as 45000
RouterA(conf-router_bgp)# exit
RouterA(conf)#
The neighbors configured under CONFIGURATION-ROUTER-BGP mode and are defined using the neighbor remote-as
command exchange only IPv4 unicast address prefixes.
Example of enabling BGP in Router B
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Border Gateway Protocol (BGP)