Configuring BGP4 peer groups

A peer group can be created and neighbor IPv4 addresses can be associated with the peer group.
  1. Enter the configure terminal command to access global configuration mode.
    device# configure terminal
  2. Enter the router bgp command to enable BGP routing.
    device(config)# router bgp
  3. Enter the local-as command to configure the autonomous system number (ASN) in which your device resides.
    device(config-bgp-router)# local-as 1000
  4. Enter the neighbor peer-group-name peer-group command to create a peer group.
    device(config-bgp-router)# neighbor mypeergroup1 peer-group 
  5. Enter the neighbor peer-group-name remote-as command to specify the ASN of the peer group.
    device(config-bgp-router)# neighbor mypeergroup1 remote-as 11
  6. Enter the neighbor ip-address peer-group command to associate a neighbor with the peer group.
    device(config-bgp-router)# neighbor 10.2.2.2 peer-group mypeergroup1
  7. Enter the neighbor ip-address peer-group command to associate another neighbor with the peer group.
    device(config-bgp-router)# neighbor 10.3.3.3 peer-group mypeergroup1

The following example creates a peer group and specifies two neighbors to belong to the peer group.

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# local-as 1000
device(config-bgp-router)# neighbor mypeergroup1 peer-group
device(config-bgp-router)# neighbor mypeergroup1 remote-as 11
device(config-bgp-router)# neighbor 10.2.2.2 peer-group mypeergroup1
device(config-bgp-router)# neighbor 10.3.3.3 peer-group mypeergroup1