nanog mailing list archives
RE: Multi site BGP Routing design
From: <John.Herbert () ins com>
Date: Fri, 5 Jun 2009 19:40:15 -0500
This is a good concept but if the ISP route is a Juniper then as I recall by default it looks ahead, sees the as-path routing loop if it were to send it to the other router, and doesn't send it. So while you might be able to configure it on the receiving router, if the sending router won't send it, you're SOL. j. ________________________________ From: Chuck Anderson [cra () WPI EDU] Sent: Friday, June 05, 2009 20:33 To: nanog () nanog org Subject: Re: Multi site BGP Routing design On Fri, Jun 05, 2009 at 05:50:28PM -0500, Justin Krejci wrote:
If the private link between the two sites fails, will BGP allow for us to access the IP subnets at site 2 from site 1 via the internet given that both sites are advertising under the same ASN?
Maybe. Especially if both sites are connected to the same ISP, you can tweak some BGP knobs to allow your own ASN to appear in the AS PATH N times where N > 1, and accept the routes anyway.
Current thread:
- RE: Multi site BGP Routing design, (continued)
- RE: Multi site BGP Routing design John.Herbert (Jun 05)
- Re: Multi site BGP Routing design Michael K. Smith (Jun 05)
- Re: Multi site BGP Routing design Steve Bertrand (Jun 05)
- RE: Multi site BGP Routing design Ivan Pepelnjak (Jun 06)
- Re: Multi site BGP Routing design Saqib Ilyas (Jun 06)
- Re: Multi site BGP Routing design Adam Greene (Jun 06)
- RE: Multi site BGP Routing design Justin Krejci (Jun 08)
- RE: Multi site BGP Routing design Ivan Pepelnjak (Jun 09)
- Re: Multi site BGP Routing design Steve Bertrand (Jun 05)
- RE: Multi site BGP Routing design John.Herbert (Jun 05)
- Re: Multi site BGP Routing design Chuck Anderson (Jun 05)
- Re: Multi site BGP Routing design Steve Bertrand (Jun 05)
- Re: Multi site BGP Routing design Randy Bush (Jun 05)
- Re: Multi site BGP Routing design Steve Bertrand (Jun 05)
- Re: Multi site BGP Routing design Randy Bush (Jun 05)
- Re: Multi site BGP Routing design Randy Bush (Jun 05)