Can I configure the same LAN IP range with two different interfaces?

Posted on 2014-08-31
Last Modified: 2014-09-01
Sonicwall TZ215
Interface X0,
Interface X1, public IP from ISP
Interface X5, <--- this is what I need to configure

Behind X0, is our production LAN. Now we  need to create the same network ( behind X5. Sonicwall did not allow me to do this, the error said overlapping IP range.

How can I work around this?

Please help!

PS - here is more info to help understand the situation
We are on a server migration project. We need to make a test network behind X5 that is exactly the same IP range as the production network behind X0
Question by:techcity
    LVL 11

    Expert Comment

    by:Joseph O&#39;Loughlin
    Without access to the hardware, I believe yes.
    Simply put both ports into the same vlan.
    Basically the internal ports are on a switch, but the rest of the device is a router.
    LVL 11

    Accepted Solution

    You can only do Layer2 bridging X5 interface to X0 interface, that way X5 resides into the X0 subnet still separated by different zones you configured the interfaces.
    LVL 1

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