I am trying to implement and test BGP in a lab environment. Due to some error, I have assigned wrong AS numbers to the routers and I would like to change that. Simply running the same commands with the correct configuration does not work. I have also tried to reset the BGP connection. But that resets the peers and not the router settings. Is there a way to simply remove any ad all BGP configurations that are present on teh router and such that the router will then have no instabnce of BGP running and I can start afresh with the configurations?

  • This is a implementation specific question, so without telling us on which equipment and routing software you're trying to do this we can't help.
    – Teun Vink
    Mar 30, 2017 at 6:40
  • @TeunVink cisco IoS , router cisco - IoSv
    – john
    Mar 30, 2017 at 6:45

1 Answer 1


This should work (but removes all bgp config):

no router bgp [old ASN]
router bgp [new ASN]
(rest of new config)

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