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Tomato router doesn't connect to cable modem

Discussion in 'Tomato Firmware' started by IanWorthington, Aug 26, 2012.

  1. IanWorthington

    IanWorthington LI Guru Member





    Just moved apartment and been set up with new cable internet with a cisco dpc2420 modem/router. My PCs connect to that fine with dhcp getting a gateway address of 192.168.0.1/255.255.255.0
    Now trying to connect my own tomato-powered Buffalo router to that. But it doesn't get a wan address via dhcp and though it says it connects when I assign it a wan static address of 192.168.0.x/255.255.255.0 I'm unable to ping 192.168.0.1 from it. LAN is on 192.168.1.x/255.255.255.0

    Turned tomato's wan dhcp back on, increased the logging level and get the following in the log. Does this suggest the isp's cisco modem is not responding to my request? And yes, the light is on, suggesting physical connectivity :)


    Dec 31 19:00:08 unknown cron.err crond[91]: crond (busybox 1.14.4) started, log level 8
    Dec 31 19:00:08 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:11 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:14 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:17 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:40 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:43 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:46 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:49 unknown daemon.info udhcpc[66]: Sending discover...
    Dec 31 19:00:52 unknown daemon.info udhcpc[66]: Sending discover...
    ...

    Have tried cloning the PC's MAC to the WAN without success. Ditto a MAC with a small change to the final octet.

    Have also tried powering off the cisco and the buffalo, allowed the cisco to come fully up before powering up the buffalo, then connecting them in case the cisco was blacklisting on the basis of too many dhcp requests


    Can't think of what else to try, any suggestions most welcome.



    [tomato] Status Overview - Google Chrome_2012-08-25_16-59-52.png



     
  2. Elfew

    Elfew Addicted to LI Member

    in internet - basic set WAN connection type to DHCP
     
  3. IanWorthington

    IanWorthington LI Guru Member

    The above log is from when I have wan set to dhcp. But it doesn't work with either dhcp or static.
     
  4. Engineer

    Engineer Network Guru Member

    From the looks, you have a router on a router. Turn the WAN of Tomato router to off and connect a LAN port on the Tomato router to the Modem/Router. Set a static IP for the Tomato router. Set the gateway for the Tomato router to point to the Modem/Router.
     
  5. IanWorthington

    IanWorthington LI Guru Member

    I do have a router connected to a router, yes. But I've always gone this by connecting my WAN to the modem/router before giving my two physical LANS each with distinct subnets. Then I route everything to my own router and port forward according to my own rules. Never had a problem like this before.

    Your suggestion would give me a single physical lan iiuc. And I don't think I can specify a gateway if I disable the WAN can I?
     
  6. Engineer

    Engineer Network Guru Member

    I know you can specify a gateway, but you're right, it essentially makes the Tomato router an access point on the larger network. I think you're right in that you would need to connect your WAN port to the modem/router to keep the networks separate. I don't have an answer but am curious as to what anyone else suggests.

    By the way, in under your WAN settings (in BASIC settings), is there a section to give type in an IP address of "Route Modem IP"? If so, did you place 192.168.0.1 in that field?
     

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