[98380] in North American Network Operators' Group
Re: large organization nameservers sending icmp packets to dns servers.
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Mon Aug 6 20:20:29 2007
In-Reply-To: <9416.1186432995@turing-police.cc.vt.edu>
Cc: "Patrick W. Gilmore" <patrick@ianai.net>
From: "Patrick W. Gilmore" <patrick@ianai.net>
Date: Mon, 6 Aug 2007 20:17:04 -0400
To: nanog@merit.edu
Errors-To: owner-nanog@merit.edu
On Aug 6, 2007, at 4:43 PM, Valdis.Kletnieks@vt.edu wrote:
> On Mon, 06 Aug 2007 16:11:36 EDT, Matthew Crocker said:
>
>> But you could, it isn't hard to dump a BGP view into a box from a
>> border router and use that map to determine the proper DNS records to
>> return.
>
> It's harder than it looks, given the number of people who pop up on
> this list
> and ask how to get BGP to Do The Right Thing when 2 paths are the
> same length
> but vastly differing in bandwidth, number-of-actual-hops, and/or
> latency....
Plus you are assuming BGP knows the right answer.
People here are arguing ICMP Echo is a bad metric. BGP makes ICMP
look like the gold standard.
--
TTFN,
patrick
