Poor-Mans Redundant Internet Connections?

Discussion in 'Networking Issues' started by TylerBrown, Mar 20, 2006.

  1. TylerBrown

    TylerBrown Network Guru Member

    I've currently got a WRT54GS running with some Sveasoft firmware. I've also just ordered a new WRV54G which should be in my hands in a few days. My internet connection has been pretty unreliable for the past month or two and Bell doesn't seem to be able to remedy the situation.

    I've got a neighbour that lets me access his internet connection through his wireless router, but this requires firing up the laptop which has the wireless card and setting up a bridge between the wireless card and the ethernet port, and then plugging the ethernet port into the WAN port on the WRT54GS.

    Here is what I would like to do if possible. Set up the WRV54G as the primary router running a DHCP server and wireless. All desktop PC's will be wired to the WRV54G and my internet connection will be plugged into the WRV's WAN port. Pretty simple thus far.

    What I'm not sure about is if I can set up my WRT54GS so that it is connected wirelessly as a client to my neighbours wireless router. A CAT5 cable would then run from one of the WRT's ports (not the WAN port, just a regular port) to one of the ports on the WRV.

    How well would this work? Would it actually provide redundant internet connections? Or would this simply confuse the hell out of my routers causing all kinds of problems?
  2. bluebox

    bluebox Network Guru Member

    It won't work for several reasons, the simplest being that because DHCP tells the computers where the gateway is. The DHCP router isn't going to change this when the Internet goes down.

    There are several other reasons, and what you want to do is actually much more difficult than it appears on the surface. I have a setup with a server with 3 nics that crudely load balances and constantly checks for Internect connectivity over two different connections (cabe and DSL) and it is more than you can do (well) in a WRT.

    What you *could* do, and I really thought of doing this myself with my setup here, is use my bluebox scripts to do your Internet feed for your network. These scripts will constantly check for a good Internet feed and will immediately rescan when you lose your route to the Internet. Since one of your feeds is already wireless this may be an easy fit for you.
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