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Message from discussion Routing Suggestions
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Owen DeLong  
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 More options Jan 18 2011, 8:26 pm
From: Owen DeLong <o...@delong.com>
Date: Tue, 18 Jan 2011 17:26:26 -0800
Local: Tues, Jan 18 2011 8:26 pm
Subject: Re: Routing Suggestions
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On Jan 18, 2011, at 4:54 PM, Robert Bonomi wrote:

>> Date: Fri, 14 Jan 2011 01:50:40 -0800
>> From: Randy Bush <ra...@psg.com>
>> Subject: Re: Routing Suggestions

>> i'm with jon and the static crew.  brutal but simple.

>> if you want no leakage, A can filter the prefix from it's upstreams, both
>> can low-pref blackhole it, ...

> One late comment --

> OP stated that the companies were exchanging 'sensitive' traffic. I suspect
> that they di *NOT* want this traffic to route over the public internet -if-
> he private point-to-point link goes down.  if they're running any sort of a
> dynamic/active routing protocol then -that- route is going to disappear
> if/*WHEN* the private link goes down, and the packets will be subject to
> whatever other routing rules -- e.g. a 'default' route -- are in place.

> This would seem to be a compelling reason to use a static route -- insuring
> that traffic _fails_ to route, instead of failing over to a public internet
> route, in the event of a link failure.

That's why I always prefer to put this traffic inside an IPSEC VPN. Then,
you gain the advantage of being able to let the internet serve as a backup
for your preferred private path while still protecting your sensitive information.

Then I use dynamic routing and take advantage of the diverse path capabilities.

Owen


 
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