Re: WML11 and packet loss at level 25%

From: Jouni Malinen (
Date: 2002-09-29 14:34:32 UTC

On Sun, Sep 29, 2002 at 01:10:24PM +0200, Grzegorz Marszałek wrote:

> To each router there is a LAN with aproximately 60 user connected.
> Routers 1,2,3 they are IBM 300GL with Celeron processor, 64MB RAM, and
> one Linksys WML11 PCI installed in it (firmware versions: PRI: 1.0.5,
> STA: 1.3.4). Router_ap it's a Asus board based PC, AMD Duron 800MHz
> processor, 348MB RAM. It has 2 Linksys WML11 (firmware versions as
> above), and 2 3Com cards installed.

I would recommend upgrading both primary and secondary firmware images on the cards. PRI 1.0.5 and STA 1.3.4 have known problems that cause packet corruption on PCI bus. This can cause high amount of corrupt packets which are then dropped at some level of the network stack.

> 1. router_ap is unable to work with newset hostap (2002-09-12). It's
> able to work aproximately 4 to 6 hours with it - then it hangs. The
> funny thing is, that the only clue what's going on I've got from it was
> some garbage in logs (arounf 1KB od escape characters). The host was
> completly dead - hard reboot was needed.

That's quite unfortunate.. I have not been able to repeat such hang with the latest version of the driver in my tests and it is a bit difficult to find this without getting some more information. It is quite possible that there is some kind of race condition in the latest driver version, but it does not seem to come up in my test systems.

Jouni Malinen                                            PGP id EFC895FA

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