Difference between revisions of "Cisco Aironet Wireless 802.11b"

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(→‎Known problems: updates)
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=== Known problems ===
 
=== Known problems ===
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''Linux 2.4'' Older airo or mpi350 drivers might not work with certain (more recent) Cisco [http://bellet.info/laptop/airo_mpi.HOWTO.txt firmware]. Evidently there is a Windows tool where you can modify the firmware, but if you've already nuked your win32 partition like I have, you'll be in a pickle. For Linux 2.4, you want older firmware version 5b00.08 or 5.00.03, which is available with version 3.4.9 of the Cisco Windows drivers.
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====Linux 2.4====
 +
The older airo or mpi350 drivers might not work with certain (more recent) [http://bellet.info/laptop/airo_mpi.HOWTO.txt Cisco firmware]. Evidently there is a Windows tool allowing you to modify the firmware, but if you already nuked your win32 partition, you'll be in a pickle. For Linux 2.4, you would want an older firmware version 5b00.08 or 5.00.03, which is packaged with version 3.4.9 of the Cisco Windows drivers.
  
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There also have been reports that the Window driver auto-magically updates the firmware, so if you dual boot between operating systems one day your Wireless under the Linux kernel may stop working. I haven't had that happen to me, but be careful about Windows Update or Microsoft Update. ''Never'' update the Cisco software in Windows—it also updates the firmware silently.
+
{{NOTE|There also have been reports that the Window driver auto-magically updates the firmware, so if you dual boot between operating systems one day your linux wireless driver may stop working. Be careful about Windows Update or Microsoft Update. '''Never''' update the Cisco software in Windows - it also updates the firmware silently.}}
  
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''Linux 2.6'' For Linux 2.6, this is not a problem. Cisco updated its mpi350 driver and the fixes have been reverse-engineered and incorporated in the open-source airo driver for Linux 2.6. I am running Cisco firmware version 5.60.17 (and previously 5.20.17) with Linux 2.6.11 (supplied with SuSE 9.3) and airo driver 0.6. The firmware was upgraded under WinXP automatically with the Cisco driver update. The older firmware also works with the Linux 2.6 driver
+
====Linux 2.6====
 +
The above described problem does not apply to 2.6 kernels. Cisco updated its mpi350 driver and the fixes have been reverse-engineered and incorporated in the open-source airo driver for Linux 2.6. I.e. Cisco firmware version 5.60.17 and 5.20.17 work with Linux 2.6.11 and airo driver 0.6. The firmware is upgraded under WinXP automatically with Cisco driver updates. Older firmware also works with the Linux 2.6 driver
  
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Get firmware information from {{path|/proc/driver/aironet/eth?/Status}} (eth0 or eth1) (airo driver) or {{path|/proc/driver/mpi350/Status}} (mpi350 driver).
+
Get firmware information from {{path|/proc/driver/aironet/eth?/Status}} (eth0 or eth1) (airo driver) or {{path|/proc/driver/mpi350/Status}} (mpi350 driver).
  
 
=== ThinkPads this card may be found in ===
 
=== ThinkPads this card may be found in ===

Revision as of 12:15, 19 October 2005

Cisco Aironet Wireless 802.11b

This is a Mini-PCI WiFi Adapter that is installed in a Mini-PCI slot.

Features

  • Chipset: Cisco
  • IEEE Standards: 802.11b
  • PCI ID: 14b9:a504

Mini-PCI WiFi Adapter

IBM Partnumbers

IBM Order PN (WW): 31P8301
IBM Order PN (Japan): 31P8302
IBM Order PN (EMEA): 31P8303
IBM Order PN (China): 31P8304
IBM FRU PN (WW): 26P8319, 26P8435, 26P8496
IBM FRU PN (Japan): 26P8323, 26P8369, 26P8500
IBM FRU PN (EMEA): 26P8321, 26P8367, 26P8498
IBM FRU PN (China): 26P8325, 26P8371, 26P8502
Other IBM FRU PN: 91P7406,91P7408,91P7410,26P7412

Also known (in IBM literature) as....

  • Cisco Aironet Wireless 802.11b Mini PCI
  • 802.11b Cisco Wireless Card (Sherman III)

Linux WiFi driver

A opensource Linux 'airo' driver is available, and included in recent 2.6 kernels. There is a sourceforge project page for this driver, but it seems unmaintained. One of the developers has his own project page here, but there have not been any updates since September 2004.

In addition there is a slightly dated 'mpi350' driver available from Cisco after jumping through a bunch of hoops, such as providing Cisco with your personal information. The current Cisco driver version is 2.1 and only supports select Linux 2.4 kernels. The Cisco driver does not support Linux commands such as iwconfig. However, one can use the Cisco ACU GUI with the Linux 'airo' driver for read-only status information.

Known problems

Linux 2.4

The older airo or mpi350 drivers might not work with certain (more recent) Cisco firmware. Evidently there is a Windows tool allowing you to modify the firmware, but if you already nuked your win32 partition, you'll be in a pickle. For Linux 2.4, you would want an older firmware version 5b00.08 or 5.00.03, which is packaged with version 3.4.9 of the Cisco Windows drivers.

NOTE!
There also have been reports that the Window driver auto-magically updates the firmware, so if you dual boot between operating systems one day your linux wireless driver may stop working. Be careful about Windows Update or Microsoft Update. Never update the Cisco software in Windows - it also updates the firmware silently.

Linux 2.6

The above described problem does not apply to 2.6 kernels. Cisco updated its mpi350 driver and the fixes have been reverse-engineered and incorporated in the open-source airo driver for Linux 2.6. I.e. Cisco firmware version 5.60.17 and 5.20.17 work with Linux 2.6.11 and airo driver 0.6. The firmware is upgraded under WinXP automatically with Cisco driver updates. Older firmware also works with the Linux 2.6 driver

Get firmware information from /proc/driver/aironet/eth?/Status (eth0 or eth1) (airo driver) or /proc/driver/mpi350/Status (mpi350 driver).

ThinkPads this card may be found in

External Sources

Retrieved from "https://www.thinkwiki.org/w/index.php?title=Cisco_Aironet_Wireless_802.11b&oldid=13258"