IP address denied by DHCP message

[JHyerczyk]

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?

[RWB]

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?

[JHyerczyk]

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?

[JHyerczyk]

Thanks for your help. I have a modem to router connection. I am using cable. I'll look for the unlimited lease setup.

[Pterocarpous]

...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 (http://webopedia.com/TERM/W/wide_area_network_WAN.html) MAC address (http://webopedia.com/TERM/M/MAC_address.html). (less likely would be your router's LAN MAC address, your NICs (http://webopedia.com/TERM/n/network_interface_card_NIC.html) 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 (http://www.webopedia.com/TERM/D/DHCP.html) server that is referred to in the error message is likely your ISP's (http://www.webopedia.com/TERM/I/ISP.html).
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 (http://www.webopedia.com/TERM/l/local_area_network_LAN.html) 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 (http://www.short-media.com/forum/showthread.php?t=53524)) is clean and stable.
Make sure they are plugged into a working suge protector (http://www.webopedia.com/TERM/s/surge_protector.html) (that the LED (http://www.webopedia.com/TERM/L/LED.html) is still lit on it) or, better yet, an UPS (http://www.webopedia.com/TERM/U/UPS.html).
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 (http://www.webopedia.com/TERM/R/RMA.html) 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 (http://webopedia.com/TERM/i/integrated.html) on your motherboard) that you can use instead?