Install Guide

CONFIG mode
router bgp as-number
● Add the IP address of the neighbor for the specified autonomous system.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | ipv6–address | peer-group-name} remote-as as-number
● Enable the neighbor.
CONFIG-ROUTERBGP mode
neighbor ip-address | ipv6-address | peer-group-name no shutdown
● Specify the IPv4 address family configuration.
CONFIG-ROUTER-BGP mode
address-family ipv4 [multicast | vrf vrf-name]
multicast — Specifies the IPv4 multicast address family.
vrf vrf-name — Specifies the name of VRF instance associated with the IPv4 address-family configuration.
● Enable the neighbor to exchange prefixes for IPv4 unicast address family.
CONFIG-ROUTER-BGP-AF (Address Family) mode
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BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0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
Border Gateway Protocol (BGP)
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