Enable ASN Capability for a BGP4 Neighbor

  1. Access global configuration mode.
    device# configure terminal
  2. Access BGP configuration mode.
    device(config)# router bgp
  3. Specify the autonomous system in which your device resides.
    device(config-bgp-router)# local-as 1000
  4. Enable 4-byte ASN capability for a neighbor.
    device(config-bgp-router)# neighbor 10.1.2.3 capability as4 enable
    This example shows the neighbor command, the IP address of the neighbor, and the capability as4 keywords.
The following example summarizes the commands in this procedure.
device# configure terminal
device(config)# router bgp
device(config-bgp-router)# local-as 1000
device(config-bgp-router)# neighbor 10.1.2.3 capability as4 enable