I am running a HP DV5 I7 based computer with Fedora 12. It has an Intel 5100 wireless
My base station is an Apple Airport Extreme (with 802.11n) and indeed it can broadcast
*two* sids, one is for the 5GHz frequency and I guess the other is a catch all that
includes the 2.4GHz frequencies.
I initially found that the HP *always* connected at the 2.4 frequencies and file transfers
to/from a computer wired ( 1Gb enet) to the base station poked along at about 3MB/second.
The Airport Extreme has a rate display for connected clients and it was displaying a rate
well below 300Mb.
After I (re)discovered that I could turn on the 5GHz 'beacon" and force a connection in
the 5GHz bands the file copy speeds basically doubled ( most of the time). The base
station displayed 'rates' approaching 300Mb. (The HP is about 6 inches from the base station).
My macbook pro typically beats the HP by about 3MB/second.
I do have wide channels turned on in the base station.
So some questions:
Does the 5100 driver (iwlagn) support 'wde' channels?
Is there anyway to detect if wide channels are being used?
iwconfig does *not* display the bit rate. Is it supposed to?
Performance is generally all over the place. This morning the base station was
reporting 'rates' as low a 90Mb/sec for the HP and file transfers where chugging along
at only 2MB/sec. In desperation I rebooted the HP and the Base Station and after a
while ( not immediately) the performance was back tto ~6MB/sec.
I am starting to think about getting a Gb switch...