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    Unable to get an IP from modem to complete setup

    Scheduled Pinned Locked Moved General pfSense Questions
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    • D
      delshadow
      last edited by

      I'm attempting to set up a pfsense router on an old notebook with one NIC.
      I've configured 2 VLANs on the notebook, VLAN100(WAN) and VLAN200(LAN).
      On a DELL 2824 Managed switch I want the Cable Modem to go in port 1 and the pfsense notebook to go in port 2. I've reserved port 24 for managing the switch. Ports 3-23 are for LAN traffic.
      On the switch I've set VLAN100 on ports 1 and 2, both Tagged.
      VLAN200 ports 1 and 2 Tagged, ports 3-23 Untagged.
      VLAN1 port 24 untagged.
      PVID for ports 1 and 2 is 100, ports 3-23 is 200, and port 24 is 1.
      With a notebook(not pfsense notebook) plugged into any port 3-23 I can access pfsense GUI Management.
      The problem is that I cannot get an IP from the Modem from DHCP on VLAN100.
      I've rebooted the Modem multiple times, but still do not get an IP address from the Modem.
      I'm pretty sure the problem is in my configuration on the switch.
      Not really sure where to go from here. Help would be appreciated!!

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      • S
        Smoothrunnings
        last edited by

        1. does your modem give out an IP based on MAC address?
        2. when take down your VLAN's on the laptop and plug in the modem to it does it work?
        3. Are you able to ping the laptop over it's WAN and LAN vlans?

        Sounds like you have reverse engineer the problem and check everything over. If your modem assigns an IP by MAC make sure there is a being broadcasted.

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        • D
          delshadow
          last edited by

          I'll check these first thing when I get home this evening and report back.

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          • D
            delshadow
            last edited by

            1. Not sure, but I don't think so.
            2. I plugged a different laptop directly to the modem and it got an IP and was able to surf the internet.
            3. I didn't check this this time.

            However, I did connect the modem and notebook(not pfsense) to an unmanaged switch, and, as expected, it worked just fine.
            When I connect the modem and notebook(not pfsense) to a managed switch on the same vLAN I do not get an IP.

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            • D
              delshadow
              last edited by

              Well I changed to a different managed switch, configured it the same way as before, and everything worked like a charm.

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              • DerelictD
                Derelict LAYER 8 Netgate
                last edited by

                Interesting because the port going to your modem should be untagged on VLAN 100.

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

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