[144899] in North American Network Operators' Group
Re: wet-behind-the-ears whippersnapper seeking advice on building a
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Tue Sep 20 17:09:00 2011
To: Dorn Hetzel <dorn@hetzel.org>
In-Reply-To: Your message of "Tue, 20 Sep 2011 16:13:57 EDT."
<CAFrZoh3RW19=8DmBmu6424nJzgM2E4cUXm4DM4aSpA_thb8C3w@mail.gmail.com>
From: Valdis.Kletnieks@vt.edu
Date: Tue, 20 Sep 2011 17:07:15 -0400
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Tue, 20 Sep 2011 16:13:57 EDT, Dorn Hetzel said:
> "full time connection to two or more providers" should be satisfied when the
> network involved has (or has contracted for and will have) two or more
> connections that are diverse from each other at ANY point in their path
> between the end network location or locations and the far end BGP peers,
I'm reading your statement as if you got the logic backwards - because this
doesn't rule out "pipe from one provider and tunnel across same pipe to another
provider, because the tunnel is diverse after it emerges from the first
provider's pipe. But since you know *up front* that the two connections have
fate sharing, it's not clear that it's "good enough" multihoming to count as
two *real* full time connections.
> points of failure, as long as their are any failure modes for which one
> connection can provide protection against that failure mode somewhere in the
> other connection.
As long as there is *A* failure mode? Hmm. <invents a movie-plot failure mode
involving crazed ninjas with katanas loose in a switch room at one provider>.
Yep, it's unlikely crazed ninjas will attack the switch rooms at both providers.
I'm pretty sure what you intended to say there isn't what I read it as...
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