How can I best use two internet providers on the same network.

Posted on 2007-09-29
Last Modified: 2013-12-07
I have two internet providers. The first ISP is connected to a router that we do not manage.  It is managed by our primary software provider we use it for email retrieval and to connect to a system provided by them all computers using their system need authenticated IP's.  We have a second ISP that we use for general internet usage and by employees who do not need to access the system that ISP 1  provides.  The second ISP is connected to a Sonicwall router that we use to manage and monitor internet usage.  My question is how can I utilize the features on the Sonicwall with the users connected to the router provided by ISP 1?  One idea I had is to assign the Sonicwall and authenticated IP address for ISP1 have all users use the Sonicwall as their gateway and have a static route to ISP1.  Question that I have is do I need to have different subnets?
Question by:rrincones
    LVL 5

    Accepted Solution

    You can get another router that support dual WAN. you can configure it for Load balance or Fail Over.

    There are Pro and cons to both configuration.

    Load Balance:
    Both ISPs are used at the same time; Bandwidth is increased just to name a few

    Some secure website doesn't allow you to login because both WAN IPs are sent to there server.
    If one ISP fails you loose internet access

    Fail Over:
    When one ISP goes down the other automatically kicks in. The down time is as low as 40 secs.

    Bandwidth is restricted to only one ISP

    Author Comment

    Thanks for the reply.

    I failed to mention that we have to use the router provided by ISP 1.  
    And we are not allowed to manage it.

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