Dual Wan - Linksys RV082 - having some redudancy issues.

We setup a Linksys RV082 at one of our client's locations to be used as a redundant Dual Wan router.  They have both a cable and a DSL line run in and are setup within the router.  The setup seems easy enough and had been working for a while.  Now all of a sudden if the cable drops out (WAN1)  the DSL won't automatically pick up.  If I unplug the WAN1 and just leave the DSL in WAN2 it'll start working again off of the DSL.  I'm wondering why the DSL (WAN2) no longer picks up if WAN1 is out.  

If we login to the Linksys Setup I can disconnect one and connect the other but not both simultaneously.  Something seems to be up.

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Rob WilliamsConnect With a Mentor Commented:
Wonder if it is depending on the type of lost connectivity. It may see it as still being an available connection. For example if DNS capabilities users wouldn't be able to use the Internet but the connection would still exist and be pingable.

Regardless, I would recommend upgrading the firmware. This is one of Linksys most popular units and they frequently bring out firmware updates. It's possible your basic firmware has become corrupt. Installing the latest over top would at least assure it is clean. Back up your configuration first.
Fluid_ImageryAuthor Commented:
I tried upgrading the firmware a while back when it was doing the same thing.  I tested it while I was there and it seemed to work fine, then 4 months later (last weekend) either it failed again or the main internet just didn't ever drop out.

Btw,  After it stopped working I just had them reboot the router and it kicked back on again.  I'm not a fan of Linksys products but it's the cheapest one around with a decent name that was supposed to do what we wanted.

What if I set it up as a Load Balancing dual wan and not a fail over?
Rob WilliamsCommented:
They usually switch over fine if you disconnect the cable, where that is a definite disconnect, but I find they don't always switch over. As mentioned it depends on the actual problem.

As for dual wan as opposed to fail over, is that an option? I don't have one here to check. Some have that option, but I thought the Linksys were both by default.
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Fluid_ImageryAuthor Commented:
I'm going to stop over there tomorrow to upgrade the firmware and try a few other things.  I don't have the configuration in front of me either to see the different settings.  Maybe it's just a bad box.
Rob WilliamsCommented:
Let us know how it goes. Good luck.

For the record I have had about 12 - 15 RV042's in place for 2 years, and the only failures I have had were 2 AC adapters.
Rob WilliamsCommented:
Thanks Fluid_Imagery.
Cheers !
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