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<DIV><FONT face=Arial size=2>I did a bit more testing the other
night.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>On my local Windows Access point, I can get up to
260 kilobytes/sec transfer rate from my laptop with a wireless card through the
AP to the wireless card that acts as a client on the linux router. Client ->
AP -> Client - 260Kbytes/sec. Both of the client cards were in range of each
other. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My thoughts are that because I didn't have the
hidden node problem, both clients could hear each other, the transfer rate was
higher. The other links to this local Access Point which are 400m links (two of
them) only achieve around 75kilobytes/sec. They both have LOS. They have to
route their traffic through the Wireless Card on the linux router (as previously
mentioned), but in theory they should be able to do the 260 KB/sec I can with my
laptop.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any idea's on how to speed the transfer rates
up?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Just thought I would share my
findings.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Cheers,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Peter</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=p_board@tpg.com.au href="mailto:p_board@tpg.com.au">Peter Board</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=mesh@itee.uq.edu.au
href="mailto:mesh@itee.uq.edu.au">mesh@itee.uq.edu.au</A> ; <A
title=melbwireless@wireless.org.au
href="mailto:melbwireless@wireless.org.au">melbwireless@wireless.org.au</A> ;
<A title=wireless@eventtechnologies.com.au
href="mailto:wireless@eventtechnologies.com.au">Cameron Donaghey</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 17, 2002 4:44
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [mesh] Transfer Rates</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hi Guy's,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Over on our Digicate Nodes in the Beenleigh area,
this is the sort of performance I have found (I am trying to up the
performance but I believe I might need to fiddle with RTS/CTS values or
possibly look at some driver changes. Hidden Nodes seem to be a major factor
in performance problems. There are some special windows drivers that use a
Turbo Cell custom mode that only works with Karnet Access Points that are
supposed to optimise the network bandwidth via some polling
arrangement).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Firstly, we find if someone is doing a major file
transfer, they knock out the weaker nodes (mainly our 7.5km Client node) under
the large file transfer is done. We are using an Apple Airport (Lucent Silver
card 8.10 firmware) as our main AP, all other cards are Cabletron Roamabouts
running 6.06 to 8.10 firmwares.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Transfer speed</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wired client > Client Node (linux
router) > AP > Wired Client (hanging off the access poing) ~ 450 to
500 Kb/sec</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Client Node > AP > Client Node, between
75Kb to 100 Kb/sec</FONT></DIV>
<DIV><FONT face=Arial size=2>Client Node (linux router) > AP > Client
Node (7.5 Km link) ~ 50Kb /sec</FONT></DIV>
<DIV><FONT face=Arial size=2>Client Node (7.5 Km) > AP > wired client ~
150Kb/sec</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>We also have a second access point running under
Windows (with driver hacks) but it does not seem to allow the traffic to pass
to the Windows PC to be routed over Ethernet. Thus we use a second Wireless
Card to route traffic via this Windows Access Point. Performance seems to be
between 75Kb/sec and 120 Kb/sec. If the Windows drivers can be modified to
allow local routing of the traffic over its ethernet interface, then I assume
we should be able to get close to 450 - 500 Kb/sec (Client -> Ap ->
wired)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anyone know what all the values are for the
lucent drivers in the registry? Anyone got a Linux AP driver for Lucent /
Cabletron cards?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Peter</FONT></DIV></BLOCKQUOTE></BODY></HTML>