sound like you need a routing protocol, if you have access to manage all the 
routers


On Wed, Oct 10, 2007 at 09:44:09PM -0600, Tony Hagans wrote:
> Currently I have a setup that involves connections from several different 
> providers ranging from 6 mbit DSL's to 10 mbit fractional DS3 connections 
> tied together to provide multipath high availability internet in our area for 
> schools and businesses.  We recently extended our coverage to another area 
> which has several other ISP's.  The box that is doing multiwan right now is 
> the only gateway for the entire network and for some sites it is several hops 
> back to that gateway.  My goal is for us to purchase bandwidth in other 
> locations, install a linux box and have multiple gateways available, but I 
> think this is easier said than done.  I will diagram this as best I can for 
> you in current and future setup modes.
> 
> Currently:
> 
> ISP 1                 ISP 2              ISP 3             etc...
>   |                           |                      |                    |
> 
>                            Multiwan box
>                       
>                                       |
> 
>                                  Area 1
> 
>                    /                  |                 \
> 
>              Area 2          Area 3           Area 4
> 
> Goal:
> 
> Currently:
> 
> ISP 1                 ISP 2              ISP 3              etc...
>   |                           |                      |                    |
> 
>                            Multiwan box
>                       
>                                       |
> 
>                                  Area 1
> 
>                    /                  |                 \
> 
>              Area 2          Area 3           Area 4
> 
>               |                                           |
>        Linux Box                             Linux Box
>               |                                            |
>            ISP x                                    ISP y
> 
> My goal is for people in area 1-4 to all be able to use any of the 
> connections to ISP 1-z and if one fails it passes the traffic through the 
> network to an available route.  Area 1-4 don't current have any linux 
> hardware but it has been a long standing plan to put some in place in those 
> areas as well so if that is required it could be done.  These areas are all 
> serviced by different small ISP's and would make acceptable alternate routes 
> say if a backhual failed for some reason so that is the goal.
> 
> Thanks for any input.
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> 

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