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Author Topic: DHCP not working for one client  (Read 3591 times)

d3v1@nt

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DHCP not working for one client
« on: February 26, 2011, 10:01:24 AM »

I recently upgraded from a WRT54G and am having issues with a Win7 PC with wireless-N. Initially I had it configured static at 192.168.100.100 and everything worked, but the speeds were miserable (I followed all the forum posts and recommended settings). I noticed in the Status section of the router pages that the system showed up with the correct MAC address, but the IP showed as 192.168.100.10, which is the same as the router. Assuming this might be causing issues, I set a reservation for the system at .100 and set the client to use DHCP.  However, now it won't pull an IP address at all.  The status pages show the client with the correct MAC address, but an IP of 0.0.0.0.  I've verified the MAC address a dozen times and rebooted the router and the client dozens of times with no change. Even when I removed the reservation, the system won't pick up an IP.  I have a wireless-G client that's pulling an IP fine, so I know it's sort of working.  The wired LAN is working fine, too.  There are no IP conflicts, either. I changed DHCP to 'Always Broadcast (compatibility for some DHCP clients), but no change there, either.  The client sees the network and still has a good signal, but just won't grab an IP.

Any ideas appreciated!

I'm running Hardware Version: B1 /  Firmware Version: 2.01NA
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davevt31

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Re: DHCP not working for one client
« Reply #1 on: February 26, 2011, 10:49:44 AM »

When you setup you system did you keep the same SSID or make a new one?  If you kept the same you are better off creating a whole new wireless network.  Deleting the old connection from the wireless client and adding the new one.  All network connections are made through the MAC address so the wireless N client may still be looking for the older router.
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d3v1@nt

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  • Posts: 2
Re: DHCP not working for one client
« Reply #2 on: February 26, 2011, 01:02:00 PM »

Thanks for the quick reply.  Not surprisingly, it was due to the 'Idiot Factor'.  When I set it to a static IP, I disabled the DHCP service trying to free up as many resources as possible. Dumb move.

However, now that it's pulling the proper IP settings, I'm still getting low speeds -generally 52-58Mbps, occasionally jumping to 60Mbps. The router is set with all the recommended settings and I've systematically disabled most unneeded items, like QOS, etc.  Likewise, I've configured the NIC per Intel's recommended N-settings.  I also ran inSSIDer and moved to channel 9 since the other channels (particularly 1, 6, and 11) were frequently in use. Signal strength as reported by the router stays at 85-86%.  When I was using my WRT54G, I always had a solid 54Mbps connection that didn't fluctuate.

Any other suggestions to boost performance?

Thanks again.
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