I need an expert advice on this

Discussion in 'Server Networking' started by Chris, Dec 16, 2004.

  1. Chris

    Chris Guest

    I have 4 locations accross the us connected via hardware vpn. My main
    location has a sonicwall 4060 with two t1 as redundancy. If one fails the
    location (main) is able to still be online. Now during a t1 failure the other
    locations are not able to establish a vpn (their routers can only hold one ip
    address at a time) so I have to manually login into the routers and set the
    ip of my working t1 so that they can reconnect to the vpn. Now I know that
    thre are routers out there that can have more that one ip address like my
    4060 but they are a bit expensive so I was wondering if I can set Windows
    Server 2003 with ISA at all the locations and have those servers hold 2 IP
    addresses (my 2 t1 lines) and connect via vpn to my 4060 and if 1 of my t1
    fail the servers at the locations will use my next available ip to reconnect
    to the vpn?

    What's most of the companies do in a situation like this?

    Chris, Dec 16, 2004
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  2. No.
    ISA absolutely, positively will not.
    It is not a matter of ISA or your routers,...it is just the way TCP/IP
    works. That is why those other routers cost more,...they have aditional
    software features that function "above" TCP/IP and overcome the situation.

    You get way you pay for. If you aren't willing to pay, then you don't
    Phillip Windell, Dec 16, 2004
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  3. Chris

    Herb Martin Guest

    Well, yes, you can get the two VPNs to work, but
    it won't fail over as you wish.

    It's a (re)routing problem really.

    You might be able to write a program to test the
    connectivity and CHANGE the routing table
    programmatically (that is basically what those
    expensive routers do.)
    Herb Martin, Dec 16, 2004
  4. Check out a product called RainConnect from Rainfinity. It's a connection
    load-balancing and failover add-on you can run on ISA Server. RainConnect +
    ISA Server will accomplish what you're asking for.


    Steve Riley
    Steve Riley [MSFT], Dec 17, 2004
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