WOT: dual wans

Discussion in 'Windows Small Business Server' started by Gary Karasik, Apr 30, 2008.

  1. Gary Karasik

    Gary Karasik Guest


    Say I buy a multi-wan router and have a second WAN line installed as a
    backup. When the primary line goes down and the router auto-switches to the
    backup line, the IP address will change. How then do people at remote
    offices connect to the server?
    Gary Karasik, Apr 30, 2008
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  2. Russ \(SBITS.Biz\), Apr 30, 2008
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  3. Set up your DNS to use both addresses, since they will normally come in via
    either one. So you'd have two DNS addresses pointing to
    "remote.example.com". (This assumes load balancing, instead of pure backup.)

    Another alternative is to use an application, running on the SBS server,
    that monitors the DNS address and changes it if there's a change. I use
    DirectUpdate and have for years. Works just fine with just about any DNS
    service you can imagine. (We use ZoneEdit for ours.) This is the best option
    if you have your dual WAN router configured for backup only. Finally, some
    routers have a limited number of DNS services they support and will
    automatically update against. Unfortunately, the list is usually pretty
    short. If yours is on it, great.
    Charlie Russel - MVP, Apr 30, 2008
  4. Gary Karasik

    Tom Guest

    Is it better to get 2 ADSL account for backup OR 1 adsl and 1 wireless as I
    think if there is any problem with phone exchange then both landlines
    connected to Internet might have issues therefore backup wireless connection
    would be better as a backup, Not sure though :) Never tried.
    Tom, Apr 30, 2008
  5. having two different technologies (and ISPs) involved is usually a wise
    idea. I run DSL on one, and Cable on the other. If the power goes out, that
    cable line goes down almost immediately. But the DSL line will stay up quite
    a while in most cases.
    Charlie Russel - MVP, Apr 30, 2008
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