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Date:      Mon, 29 Jul 2013 08:43:15 -0500
From:      lconrad@go2france.com
To:        <freebsd-questions@freebsd.org>
Subject:   Re: 2 lines
Message-ID:  <51f67173.42f.28e1f100.59197860@go2france.com>

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On Monday 29/07/2013 at 8:14 am, "Zyumbilev, Peter"  wrote:
> Hi,
>
> I have 2 fiber lines and using pfsense(freebsd) I can easily use them
> for backup of LAN --> Internet traffic i.e when primary is down, 
> second
> line kick in automatically.  However when one line is down all
> connections Internet --> LAN to certain service(e.g www) via that
> connection are down as expected.
>
> My question is: is there some smart(e.g DNS) solution that can help me
> overcome this ?
DNS works at a higher layer that physical connections, so cannot be 
the solution, but may be required in a solution.

fail-over for WAN link failure is the solution.

For DNS, if you're running public domain named services and you cannot 
bring up the backup WAN link on the same IP as the failed primary, 
then you'll have to dynamically update the domain names with new A 
record.

Len



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