rln - device driver for RangeLAN2-based wireless network
rln0 at isa? port 0x270 irq ? flags 0x00
rln* at pcmcia? function ? flags 0x00
The rln device driver supports at least the following cards:
+o Proxim RangeLAN2 7100 ISA Card
+o Symphony PC Cards
+o Proxim RangeLAN2 7200 Two Piece PC Card
+o Proxim RangeLAN2 7400 One Piece PC Card
+o Digital RoamAbout FH 2400 PC-Card
+o AMP Wireless PC-Card
The Proxim RangeLAN2 air protocol is incompatible with the
older RangeLAN(1) cards, Lucent Technologies' WaveLan cards, and with
802.11 cards in general.
The RangeLAN2 cards communicate using an Ethernet-like protocol over the
2.4--2.483GHz part of the spectrum. This frequency happens
with that of strong harmonics emitted by common consumer microwave ovens.
You can guess the rest. Depending on the channel condition,
the NICs operate
in one of two modes: 1.6Mb/s or 0.8Mb/s signalling
In the event of errors, the card can be reset by using ifconfig(8) to
bring the card down, then up.
Not supported. The medium used by the device is always air.
rln0: hardware fault The card reported a hardware fault
Check the antenna. The interface is automatically marked
rln0: synchronised to ? (?) channel ?/? The card has successfully synchronised
with a nearby unit. Packets are only transmitted
when the unit
has synchronised with another.
rln0: lost sync Synchronisation was lost. Check for microwave ovens being
rln0: nothing to sync to; now master The card was unsuccessful in
(re-)synchronising with any other unit, and was configured
as an alternate
rln0: packet too big (? > ?) The card generated a message
the maximum size allowable for Ethernet.
rln0: command error 0x?? command ?? The card reported an
in the host-card protocol.
rln0: reset timeout An attempt to hard reset the card
failed. This is
either a serious hardware fault, or a bus conflict.
rln0: tx_request timed out, status 0x?? The host-to-card
protocol timed out. This could mean a duplex transfer
is in progress
and the interrupt service routine has not run. Check the
rln0: lost message ?? seq ? An expected response to the
command did not
appear within a reasonable time.
rln0: unknown RangeLAN2 wireless network card The card model was not
matched in the known-card tables.
cnw(4), intro(4), isa(4), netintro(4), pcmcia(4), ifconfig(8)
David Leonard, Dept Computer Science and Electrical Engineering, University
of Queensland <firstname.lastname@example.org>.
Information and ideas gleaned from disassembly of Dave
<email@example.com> Linux driver (which apparently uses
from Yoichi Shinoda's <firstname.lastname@example.org> BSDI driver, and Geoff
Voelker's <email@example.com> Linux port of the
This driver has not been tested with lots of cards, so there
are bound to
be subtle timing problems with different hardware. It
should also work
with the Symphony PC cards.
I couldn't figure out how to make roaming work, nor how to
RSSI link quality values.
There is no way to change the channel or security ID on the
card, or to
make it a master, except through source code. This is because it is currently
impossible under OpenBSD to trigger such changes
through calls to
ioctl(2) on the interface.
Oh, and transmit doesn't seem to work.
OpenBSD 3.6 April 2, 1999
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