Re: WML11 and packet loss at level 25%


From: Grzegorz Marszałek (grafzero_at_dione.ids.pl)
Date: 2002-10-04 15:18:58 UTC



W liúcie z nie, 29-09-2002, godz. 16:34, Jouni Malinen pisze: Hello!
> 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.
>

You were right - after upgrading fimrware to versions: PRI 1.1.0 and STA 1.4.9, kernel 2.4.19 and hostap-2002-09-20 everything works perfectly! Average packet loss is between 0% and 1%, transfer is aroung 570KB/s, no hangups, all possible modes are woring (I use Master and Ad-Hoc modes). It makes HUGE difference comparing to previous setup (PRI 0.5.0, STA 1.3.4, packetloss 10% average, transfer maximum 380 KB/s, hangups every 6 to 8 hours... nightmare...).
I've upgraded WML11 cards using Windows98, on Pentium 233MHz, with 144MB RAM machine. First I've upgraded it to PRI 1.1.0, STA 1.4.2 using official LinkSys upgrade, then I've used "hacked" upgrade from http://www.eng.tau.ac.il/~yash/IEEE802.11/ which gave me STA 1.4.9.

-- 
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           -==*  We are but packets in the Internet of Life *==-


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