Re: Coampaq WL200 & prism2

From: Jouni Malinen (
Date: 2002-02-28 14:20:16 UTC

On Thu, Feb 28, 2002 at 12:39:44PM +0000, Jarkko Raja wrote:

> This is my dmesg printout. Can anyone tell what the [RetryErr] messages
> menas.

They are packets for which the card did not receive an acknowledgement before retry limit (4 or 8 tries if I remember correctly) was reached.

> I get this king of messages and also "invalid misc" errors in iwconfig.

These are probably also from failed transmissions (e.g., invalid frame checksunm).

> Sometimes the Compaq's card suddenly stop working and the the pcmcia
> has to be restarted to get is working again. Do I have problems in
> PCI, Pcmcia, WL200, Firmware or driver or is this normal ?

If it stops working totally (i.e., no packets get through), then it is not exactly normal. I have seen various cases in which the card seems to die suddenly (it does not seem to respond to anything before reset) under load. Most of these have been fixed in the latest driver, but there may well be some problems left.

Retry and FCS errors are quite normal, especially if the stations are near the limit of the radio coverage.

Jouni Malinen
SSH Communications Security Corp

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