|Our home wireless network utilizes a US Robotics router connected directly to the DSL modem. On the wireless side we have two desktop computers (XP & Vista), two XP laptops, two Netbooks (XP and Win7), a Wii, Roku box and a Canon printer, all sharing the network... not always at the same time, of course, but at least two or three wireless connections at any one time. These each use their own built-in wireless adapters, except for the older desktops that have USB wireless adapters.|
Surprisingly, most of the time everything is just fine, but every other day or so, one device does not get a DHCP assignment when it boots up. The computer shows good signal and proper SSID, but only 'local' or 'limited' connectivity. Doing a Windows 'Repair' or rebooting the computer does not help at all, it takes a trip to the attic to reboot the router, which always brings things back into operation.
This is an unprotected (no encryption) network, and the DHCP lease time is the default 6 hours. Other router setup parameters are the default values as well, including a generous range of IPs that the router can assign to wireless clients.
A friend with a different rounter has this problem occasionally also; any help is much appreciated.