From: James (james@towardex.com)
Date: Fri Jul 02 2004 - 18:49:38 GMT-3
The easiest way to migrate an AS is to use local-as on peering and customer
sessions first, then start planning maintenance for global network reload with
new configs. This is how some of the major backbones have migrated their
networks today.
Most backbones I've seen don't seem to like using confederations if at all
possible.
-J
On Fri, Jul 02, 2004 at 04:19:33PM -0400, Tom Martin wrote:
> It is tough to follow Howard and offer any kind of practical advice on
> BGP... But I will throw my idea out on the assumption that you're
> studying for the lab and just looking for options for "what if"
> scenarios...
>
> You could configure the existing AS 100 as a confederation AS within AS
> 200 by adding a single line:
>
> router bgp 100
> bgp confederation identifier 200
>
> That would also have the effect of advertising AS 200 to EBGP peers,
> without reconfiguration of any existing neighbors. That assumes that you
> aren't going to have new neighbors, that your neighbors will be
> correctly configured for your "new" AS, etc.
>
> -- Tom
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccienj
> Sent: Friday, July 02, 2004 2:54 PM
> To: ccielab@groupstudy.com
> Subject: BGP AS-Migration
>
> An ISP currently on AS 100 will move to AS 200 next year, to avoid
> reconfiguration for this year's customer's what would be best solution
> to
> minimize reconfiguration.
>
> I think BGP Local-as would be the best way to handle this any other
> ideas ?
>
> thanks,
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
This archive was generated by hypermail 2.1.4 : Sun Aug 01 2004 - 10:11:46 GMT-3