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2 WAN interfaces with IPs on the same subnet

NorsmithNorsmith Newbie ✭
in WAN Acceleration

Have a questions regarding the second WAN port settings on my Sonicwall Tz270

Trying to setup the second interface as a WN port for the External IP in the same subnet as the first WAN interface and have the Error Message:
"…Subnet on this interface overlaps with another interface…"

Is it any solution to use 2 external IP on the same subnet fort the 2 WAN interfaces?

Thanks.

Category: WAN Acceleration
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Best Answer

  • CORRECT ANSWER
    ArkwrightArkwright All-Knowing Sage ✭✭✭✭
    Answer ✓

    The short answer is "no".

    Why do you need two physical interfaces in the same network? Is this for redundancy?

Answers

  • NorsmithNorsmith Newbie ✭

    Thanks for answer,

    yes for redundancy.

  • ArkwrightArkwright All-Knowing Sage ✭✭✭✭

    I don't think PortShield works for WAN interfaces but there are some other modes.

    L2 bridge mode might work, but I suggest you test it to make sure behaves in the way you're expecting.

    https://www.sonicwall.com/support/knowledge-base/configuring-layer-2-bridge-mode-in-sonicos-enhanced/170505396170557

  • NorsmithNorsmith Newbie ✭
    Don't really understand :-) but will try to figure out it.
    I have 2 VPN channels and guess in this scenario I have to make a lot of adjustment compared with the regular failover WAN port .
    In any case thanks for answering :-)
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