Driver ipw2200 needs updating
The Zy DAS ZD1211 chipset is very popular in consumer USB wireless devices (e.g, AOpen/D-Link WL54).Zy DAS was acquired by Atheros in April 2006, and the ZD1211 chipset was rebranded as AR5007UG.You can find more information of your wireless hardware from the Linux Wireless website to get more information about the driver and the hardware support.We have listed some hardware that is supported, but would welcome more information to improve this wiki.This will pull in dkms and a bunch of other dependencies required to build the madwifi kernel module.If this worked out fine, you need to load the modules: The Atheros AR5007EG (AR242x 802.11 abg) card is a special case.The kernel shipped with Cent OS is not the latest and greatest kernel, it is a known, stable and proven kernel that may be a few years old (depending on the release).
With Cent OS-5.4 (kernel-2.6.18-164.el5 and upwards), these wireless devices operate correctly.
These devices are supported by the zd1211rw kernel driver.
Ralink RT2561 series chipsets are supported by the rt61pci kernel driver.
The main reason for this is that wireless device manufacturers do not allow the free redistribution of the firmware that is required to make the device work.
If you don't have a network connection, simply download the firmware RPM packages named ipw2100-firmware from RPMforge at on another system and transfer the file using a USB stick.The ipw2200 driver up to version 1.0.6 (in combination with some newer kernels) had a problem getting DHCP leases (it turned out to be a bug in the broadcasting code). Older ipw2200 driver versions shipped by many distributions have been reported to freeze a T43 after several minutes of intensive communication.