IP address denied by DHCP message

JHyerczykJHyerczyk Palos Park, Illinois (26 miles SW of Chicago)
edited February 2007 in Science & Tech
My IP address lease has been reduced to only 2 hour increments. I checked my error log and found the following message listed hundreds of times over the past week: IP Address lease 192.168.1.100 for the Network Card with network address 00106023A27F has been denied by the DHCP server 68.87.72.13 (The DHCP Server sent a DHCONACK message.)

What is going on? I cannot function having to repair my IP address every two hours or reboot my PC every 2 hours. How do I fix this?

Comments

  • RWBRWB Icrontian
    edited February 2007
    Check in your router... there should be a lease time setting you can set to infinite or something. But it depends on what you got. Just curious, how does your setup work? Cable/DSL, Modem to router or modem/router combo?
  • JHyerczykJHyerczyk Palos Park, Illinois (26 miles SW of Chicago)
    edited February 2007
    RWB wrote:
    Check in your router... there should be a lease time setting you can set to infinite or something. But it depends on what you got. Just curious, how does your setup work? Cable/DSL, Modem to router or modem/router combo?
  • JHyerczykJHyerczyk Palos Park, Illinois (26 miles SW of Chicago)
    edited February 2007
    Thanks for your help. I have a modem to router connection. I am using cable. I'll look for the unlimited lease setup.
  • PterocarpousPterocarpous Rosie the Riveter Lives On in CA, USA! New
    edited February 2007
    JHyerczyk wrote:
    ...My IP address lease has been reduced to only 2 hour increments. I checked my error log and found the following message listed hundreds of times over the past week: IP Address lease 192.168.1.100 for the Network Card with network address 00106023A27F has been denied by the DHCP server 68.87.72.13 (The DHCP Server sent a DHCONACK message.)
    Hi Hyerczyk. Welcome to Short-Media!

    RWB's recommendation to check your router's lease configuration is a good idea. That's the 1st thing I'd check too.

    If the problem persists after checking the lease configuration, please, continue...
    • The "00106023A27F" no. is likely your router's WAN MAC address. (less likely would be your router's LAN MAC address, your NICs or you cable modem's).
    • The reason I say the router's WAN MAC address is because the WAN (Internet) should only be seeing the router's WAN MAC - not any of the others..
    • The DHCP server that is referred to in the error message is likely your ISP's.
    • The problem you're experiencing does sound like a router issue. Having said that, it won't hurt to check w/ your ISP and to check connections to the LAN side (the side your computer connects to) and WAN side (the side the cable modem connects to) of your router.
    • Have you contacted your ISP and...
      • Verified that the DHCP server is correct
      • Had them check the signal strength coming to and from your cable modem (on the WAN (their) side)?
      • Told them about the error message you're getting? (The error message may mean something to them since it is their DHCP server...)
    • If you're connection to the router is wired, change your patch cable and connect to a different port.
    • Change the patch cable between the router WAN port and the cable modem, too.
    • Check the power connections to your cable modem and your router.
      • Do you have problems w/ power sags (brown outs) or spikes in your area or in your home?
      • Do the lights flicker or have you had any power outtages recently?
      • Make sure the power supplied to your router and cable modem (all of your computer-related equipment for that matter) is clean and stable.
      • Make sure they are plugged into a working suge protector (that the LED is still lit on it) or, better yet, an UPS.
      • Make sure that the house wiring circuit or any type of "strip" etc. that they are plugged into is not overloaded or doesn't have other equipment plugged in that requires a lot of currrent to run or can place noise on the line. (e.g. a compressor, or old laser printing or copying equipment, etc.)
    • The problem could be on the LAN side w/ respect to the LAN DHCP server built into the router.
    • To check that out, assign your computer an STATIC IP address w/in the subnet you're on. (e.g. 192.168.1.45)
    • Set your router as the DHCP server in your NIC's TCP/IP Properties configuration. (I'm assuming your router's LAN IP is 192.168.1.100, yes?)
    • If the problem goes away,...
      • Check w/ the manufacturer of the router for any firmware updates that might be available
      • Apply the update then set your IP configuration back to dynamic again.
      • If the problem persists or if there's no firmware update available, then RMA the router.
    • Who is the manufacturer and what is the model no. (including the version no.) of your router?
    • If you haven't done so already, apply any available firmware updates to your router.
    • Are there other computers on your network?
    • If so, are they experiencing the same issue?
    • How do they connect to the router? (wired or wireless)?
    • Is your NIC Wired or Wireless?
    • Do you have another NIC you can use for now? (perhaps there's one integrated on your motherboard) that you can use instead?
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