[isp-bgp] Re: BGP administrative distance question

[Thanh_Mai@...]

I'm sorry, i was not clear.
This is in reference to IBGP and EBGP distances only, so If I set EBGP to
20 and IBGP to 200, I will always preferr EBGP regardless of AS-PATH, etc.
NO IGP routes involved.
Thanks,
-Thanh




Pete Templin <petelists@...> on 05/07/2004 11:20:33 AM

Please respond to isp-bgp@isp-bgp.com

Sent by:    Pete Templin <petelists@...>


To:    isp-bgp@isp-bgp.com
cc:
Subject:    [isp-bgp] Re: BGP administrative distance question


Thanh_Mai@... wrote:

> I was wondering if anyone out there has an opinion on why having the
> administrative distance determine the best path(bypassing the traditional
> selection algorithm) would be a bad idea? Any reasons for it?

What do you mean "bypassing the traditional selection algorithm"?
Administrative distance ALREADY comes before the BGP path selection
algorithm - the BGP rules only matter if there are two (or more) BGP
choices and NO other choices with lower administrative distance.

Off the top of my head, I could understand (possibly) some adjustment of
administrative distance values for IGPs and EGPs, but I think a router
could get a little confused if xGPs had lower AD values than connected
interfaces.

pt






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