The Linksys rvo business series routers have built in WAN failover as well..
however ive never tried running asterisk behind one...

What about a CRON script that pings the gateways of both ISP's..  and if one
goes down, have the default gw in the route table set to the other..  ..
-Christopher

-----Original Message-----
From: Philip Prindeville [mailto:philipp_s...@redfish-solutions.com] 
Sent: Thursday, September 23, 2010 1:09 AM
To: astlinux-users@lists.sourceforge.net
Subject: Re: [Astlinux-users] Multi-home AstLinux?

  There are ways to do what you're doing without a reboot.

You first need to figure out what state changes before/after the reboot, and
then come up with a way to automate that.



On 9/22/10 8:31 PM, Ionel Chila wrote:
> For a data center it may be an appropriate solution but for a small shop
or home
> use this is just an extra piece of hardware to buy, maintain and a failure
point
> as well. I wish there was something elegant that can be built into the
astlinux
> image.... I have two ISP at home and Comcast regularly sucks. My other ISP
is
> over WiMax and reliability is much better. Unfortunately I have to deal
with
> WiMax latency but is a good backup plan when Comsucks takes forever to fix
> anything. My crude setup does work and is automated, it just requires
reboot.
> Even restarting Asterisk won't connect back to my SIP providers....
>
>
>
>
> ----- Original Message ----
> From: Philip Prindeville<philipp_s...@redfish-solutions.com>
> To: astlinux-users@lists.sourceforge.net
> Sent: Wed, September 22, 2010 6:08:17 PM
> Subject: Re: [Astlinux-users] Multi-home AstLinux?
>
>    About the only really cleanly working solution I can think of is to
have a
> "proxy" in a data center that accepts traffic for address 'A', and then
> encapsulates it (either via IPsec ESP with NULL encryption or with GRE)
and then
> forwards the traffic to your IP addresses B and C.
>
> You can decide what policy you want for that: easiest is all traffic to B
as
> long as the tunnel is up, and then failing over to C when the tunnel goes
> down...
>
> That, on the other hand, introduces another point of failure, and requires
you
> to potentially renumber your network to expose 'A' as your address
(whereas
> previously 'B' or 'C' might have been your published address).
>
>
> On 9/22/10 3:12 PM, Dan Ryson wrote:
>>     Thanks Philip.
>>
>> Regardless of what it should be called, what we need is fail-over
>> diversity.  For our purposes, we hope to avoid having two circuits from
>> the same provider because when our cable modem stops working, cable
>> Internet service also quits working at neighboring businesses in our
>> complex.  We've found the same to be true for our DSL line.  However,
>> they've never (knock wood) failed at the same time.
>>
>> Dan
>>
>> On 9/22/2010 3:42 PM, Philip Prindeville wrote:
>>>      Technically, "multi-homed" is exactly that: having more than one IP
>>> address.
>>>
>>> Doing hot-failover with no loss of connectivity is a lot easier to do
with two
>>> circuits of the same kind (or at least through the same provider,
terminating
>>> into the same peering gateway).
>>>
>>>
>>> On 9/22/10 8:16 AM, James Babiak wrote:
>>>> Dan,
>>>>
>>>> You're not really 'multi-homed', you just have two Internet circuits.
If
>>>> one goes down, it's not like you can use the same IP address on the
>>>> other one.
>>>>
>>>> What you can do though is setup the second circuit as a fail-over if
the
>>>> first one goes down. We do this and it works very well. We basically
>>>> have a script running in the background that monitors for connectivity
>>>> on the primary circuit. If it loses connectivity for so many seconds,
it
>>>> will test to see if the secondary circuit is online. If it is, it
>>>> changes the default route to use the secondary. It continually
monitors,
>>>> using a host route, to see if the primary circuit comes back, and if so
>>>> it changes the default route back over to it.
>>>>
>>>> Keep in mind that any external calls in progress when the primary goes
>>>> down would die.
>>>>
>>>> -James
>>>>
>>>> On 09/22/2010 10:42 AM, Dan Ryson wrote:
>>>>>        I think this topic has already been discussed before on this
list.
>>>>> However, Google and I can't seem to find the discussion thread.
>>>>>
>>>>> We have fixed IPs from both a cable and DSL provider.  It it feasible
to
>>>>> our multi-home AstLinux using a Soekris net5501?  If so, how?
>>>>>
>>>>> Thanks.
>>>>>
>>>>> Dan
>>>>>
>>>>>
>


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