Waykand,
Just my 2 cents your also going to see problems with a cheap switch unless you can for sure get in and force it to 10 meg 1/2 duplex! the Airbridges don't play nice with switches that auto sense. I had to go out and buy a 12 port Cisco router that I could log into and set to the correct setting and if you go back there are many threads of people seeing problems with packet loss, slow throughput and many other problems all because an auto sensing D-link, Linkysys and many other cheap switches always sense the AB as 10 meg FULL duplex.
For whatever it is worth (2 cents?).
It looks like any autoconfig ethernet device will config to 10Mbps full duplex
if connected to an aP(P(O))/aB(O/T).
In at least *some* configurations, this will give heavy (5-20%) packet loss
in the upstream direction. Error counters on the ether and wireless side
does not show this packet loss (lost/overrun/failed/aged/etc counters). If the
device connected to the radio is set to 10Mbps half duplex, the problem
disappears. Why? I have no idea. All I know is that I have to hard code the
ethernet ports on my routers/firewalls (mainly rtl8139/a few intel 82558 eth
chipset) to 10/hdx to avoid the problem.
I asked my distributor to try to reproduce the problem in the lab, but they
didn't find any problems with 10/fdx. So this is kind of a skeleton in the
closet - some times 10/fdx works fine, some times it gives heavy packet loss.
It could be a link layer problem - i.e., some ethernet chips don't work very
well with the chip in the radios but only in fdx mode, it could be an ethernet
driver problem, it could be a timing problem with running the radio eth port
fdx when the wireless side work load is too high (the dual core atmel chip
runs both the wireless and eth MACs). Pretty much impossible to debug unless
you have debug/devel versions of the radio fw and eth driver on the other
end of the cable and equipment to monitor the ethernet phys/link level signals.
-- LarsG
----------ANNOUNCEMENT---------- Don't forget to register for WISPCON IV http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm
The PART-15.ORG smartBridges Discussion List
To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname>
To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges)
Archives: http://archives.part-15.org
