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    I can't create two gateways with the same IP

    2.0-RC Snapshot Feedback and Problems - RETIRED
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    • E
      ericopf last edited by

      Hi folks,

      I have two WAN interfaces on my pfsense 2.0, and both use the same Gateway ('cause both are on the same subnet offcourse).

      I can't create a gateway for each interface because when I try shows this message:

      "The gateway IP address "200.XXX.XXX.1" already exists."

      And I can't select the same gateway for two interfaces because I only can select one gateway per interface.

      Thanks in advanced.

      Érico

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      • jimp
        jimp Rebel Alliance Developer Netgate last edited by

        You can't use the same gateway on two interfaces. If you want to use two links to the same ISP in that way, you'll need some kind of NAT router in front of one connection so it will appear to have a unique gateway.

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        • E
          ericopf last edited by

          Thank you jimp,

          I'm sorry for my little knowledge about that, but why can't I do this ? Is it possible isn't ?

          I have two IPs that use the same gateway, is there a way to set up this without turn on another computer ?

          Thank you.

          Érico

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          • jimp
            jimp Rebel Alliance Developer Netgate last edited by

            No, it is not currently possible to route to the same gateway through two separate interfaces.

            It's been discussed at length on this forum before. If you search the archives you will find many discussions on the topic.

            Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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            • E
              ericopf last edited by

              Thanks, but is it a pfsense or TCP/IP limitation ?

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              • jimp
                jimp Rebel Alliance Developer Netgate last edited by

                It is a general network routing limitation, without getting into too much detail.

                There are ways around it, such as ECMP, but they are not working well enough to be a viable solution for load balancing/failover/etc in the way that they need to be used by pfSense.

                Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

                Need help fast? Netgate Global Support!

                Do not Chat/PM for help!

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                • R
                  rpsmith last edited by

                  you might be able to have your ISP switch one of your connections to a static IP.  that will probably cost you a few more $ every month but that should give you a different gateway from your non-static connection.

                  Roy…

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                  • E
                    ericopf last edited by

                    jimp,

                    Thanks for your answer, don't need get into more details, I get it. =)

                    rpsmith,

                    Both connections have static IPs.  ???

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                    • R
                      rpsmith last edited by

                      in that case all you need to do is ask your ISP to move one of your connections to a different subnet.

                      Roy…

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