Dual DHCP type wan's now? (cable modems)



  • Does PFsense support dual dhcp type wans now? e.g. I want to connect 2 cable modems.

    thanks
    Rim

    PS I tried PFsense a long time ago and I think I had to drop it because it didnt support dual dhcp.



  • You can have a second WAN as a DHCP client.
    However what you cannot have is the same subnet and/or the same gateway on two WANs.

    (although if you have two different gateways in the same subnet it would work but i dont think this is your problem :) )



  • @GruensFroeschli:

    You can have a second WAN as a DHCP client.
    However what you cannot have is the same subnet and/or the same gateway on two WANs.

    (although if you have two different gateways in the same subnet it would work but i dont think this is your problem :) )

    Thank you, does pfsense allow you to route between the 2 subnets?

    thanks again



  • Yes of course.
    But if the clients in one of the subnets have another IP than the pfSense as gateway you will have to create a static route on their gateway.
    (or enable RIP to exchange the routing information automatically, although i like static routes for this kind of setup better).



  • GruensFroeschli is of course completely correct, I was running two cable modems in DHCP mode but I found I was using static routes more and more. Then when one of the IP's changed it would screw it up. Not only that when a modem rebooted but not all the way I would get a link up but it would have a 192.168.x.x address and this would confuse things further. The most effective 'fix' is to bung a dirt cheep access point between each modem and turn its firewall off then you can set static IP's and add as many static routes as you like  ;)

    Check out my setup <= May take a while to load under IE


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