[89647] in North American Network Operators' Group
Re: Backbone Monitoring Tools
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Mar 29 13:49:25 2006
To: Ashe Canvar <acanvar@gmail.com>
Cc: nanog@nanog.org
In-Reply-To: Your message of "Tue, 28 Mar 2006 16:07:27 PST."
<c6f8c0e90603281607r5f0d66c6r7397f3fddedd9250@mail.gmail.com>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 29 Mar 2006 13:48:33 -0500
Errors-To: owner-nanog@merit.edu
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On Tue, 28 Mar 2006 16:07:27 PST, Ashe Canvar said:
> 2. actively detect routing changes / failover to redundant paths
> using traceroutes
> i.e. alert if SFO->CHG->NYC changes to SFO->LXE->HOU->NYC
> ( link state protocols suck as far as testing backup paths go)
Two words: "Asymmetric routes". Just be aware of the implications.
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