Re: [Madwifi-users] Madwifi and 5.8GHz

[Michael P. <mpl...@di...>]

What long distance mean for you ? Over 20 km ?

We use WISP-dist Linux  with Madwifi driver 0.9.2 on AP side and svn2168 on
sta side and WRAP boards with SR5 Ubiquity wireless cards. It working find
on a 30 km link !

ttcp speed test result:

station to AP:
ttcp -s -t 10.25.4.1 -n 500
ttcp-t: buflen=8192, nbuf=500, align=16384/0, port=5001  tcp  -> 10.25.4.1
ttcp-t: socket
ttcp-t: connect
ttcp-t: 4096000 bytes in 4.96 real seconds = 806.35 KB/sec +++
ttcp-t: 500 I/O calls, msec/call = 10.16, calls/sec = 100.79
ttcp-t: 0.0user 0.1sys 0:04real 3% 0i+0d 0maxrss 0+2pf 0+0csw

AP to station:
ttcp -s -t 10.25.4.10 -n 500
ttcp-t: buflen=8192, nbuf=500, align=16384/0, port=5001  tcp  -> 10.25.4.10
ttcp-t: socket
ttcp-t: connect
ttcp-t: 4096000 bytes in 3.38 real seconds = 1184.56 KB/sec +++
ttcp-t: 500 I/O calls, msec/call = 6.92, calls/sec = 148.07
ttcp-t: 0.0user 0.2sys 0:03real 6% 0i+0d 0maxrss 0+2pf 0+0csw


Regards,

Michael Plourde
Digicom Technologies

----- Original Message -----
From: "Pablo Osuna García" <po...@eh...>
To: <mad...@li...>
Sent: Tuesday, February 19, 2008 6:18 AM
Subject: [Madwifi-users] Madwifi and 5.8GHz


> Hi everybody,
>
> We have been successfully using Madwifi in long distance 2.4GHz PtP
> links (up to 80km). We use Voyage Linux 0.4.1 with Madwifi driver
> version 0.9.3-3 and WRAP/ALIX boards with SR2/XR2 Ubiquiti wireless cards.
>
> Now due to interferences issues we need to go to 5.4-5.8GHz band. We
> tried long distance links with similar setup than before (SR5/XR5
> Ubiquiti cards instead of SR2/XR2) and found lot of problems: unstable
> link, bad performance, etc. I have seen similar problems in this list:
> See [1]
> And we are pretty sure the problem is not related to timing issues
> (AckTimeout, SlotTime, etc) as we have setup them properly.
>
> There seems to be a problem with Madwifi and Ubiquiti cards in 5.8GHz
> band. My question is, has someone running a long distance 5.8GHz PtP
> link with Madwifi and other hardware different from Ubiquiti? Where is
> the problem, in Ubiquiti cards, in Madwifi, in Madwifi with 5.8GHz
hardware?
>
> I would appreciate any answer related to experiences with this. I asked
> similar questions in Ubiquiti Forum [2] but no answer until now.
>
> Best regards:
>
> Pablo
>
> [1]
>
http://sourceforge.net/mailarchive/forum.php?thread_name=1199739415.6729.8.c
amel%40dconnnote&forum_name=madwifi-users
> [2] http://ubnt.com/forum/viewtopic.php?t=608
>
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