DHCP server stops working

Discussion in 'DD-WRT Firmware' started by bob_mcbob, May 5, 2005.

  1. bob_mcbob

    bob_mcbob Network Guru Member

    I have a WRT54G version 2.2 running the latest official release of DD-WRT. I bought it to replace a malfunctioning D-Link wireless router, and it's been working fairly well since then. I have it set to use WPA, MAC filtering, static DHCP (entered in the dhcpd box), etc.

    However, at least once a day, the DHCP server stops functioning. I sit down and move the mouse to disable the screensaver, and I see the connection has gone down at some point. It "reconnects" right away. Sometimes it will show up in the "limited functionality" state, but not always (just a Windows quirk I think). Looking at the event viewer shows the NIC lost its connection to the DHCP server when the connection went down. All the computers on the network die at the same time.

    The router itself is still working fine, it just refuses to assign IP addresses to any of the computer on the network. I can connect with a wireless client, but I get no network information from the router, so nothing works (can't even look at the status page). When I enter the information into the network connection configuration manually, everything works perfectly. The only thing that fixes the DHCP problem is unplugging the router -- rebooting doesn't do anything.

    Is the static DHCP system included in DD-WRT supposed to assign IP addresses dynamically, or do I have to manually enter all the information for each computer? I can do that, but I'd really like to know what's causing the problem.
  2. BrainSlayer

    BrainSlayer Network Guru Member

    you can use both ways. dd-wrt supports assignment of static ip's based on name and mac of a specified computer list and/or just the dynamic way.

    generally i'm working on this dhcpd problems, since i got the same once at week. but its very hard to get into this. so i need time for debugging it
  3. bob_mcbob

    bob_mcbob Network Guru Member

    Ahh, it's good to hear it's not just my router! It's not really a huge problem since I can just fill in all the information manually, but it would be nice to see it fixed at some point. Thanks!
  4. jagboy

    jagboy Network Guru Member

    i dont think that you can assign the comptuers on the network staistic ips and still use the internet. you have to assign the router the staitisc ip so it can hand it out to the clients
  5. joshag

    joshag Network Guru Member

    Assigning wireless clients static ip's has worked for me and they still have access to the internet. Nothing fancy. I was using another firmware version and it was having dhcp problems. In my aggrevation I assigned all clients static ip's and never had a problem w/ it.
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