From: Cottrell, Eric (ecottrell_at_doble.com)
Date: Tue Sep 03 2002 - 17:11:00 EDT
Hello,
I am starting to have a collection of PCMCIA NIC cards.
(humm future EBAY offerings perhaps).
I do not know if the following is supported in FreeBSD
but they are in Linux.
Xircom was bought by Intel so I have seen some
of their stuff cheap. I am using a Xircom Realport
CardBus Ethernet 10/100 Model RBE-100. It works good
in Linux, OS/2 and Windows. There was some slight
problems in linux due to the default PCMCIA configuration
on a thinkpad 600. Disadvantage is the dongle-less design
takes up both PCMCIA slots.
I also use a Linksys PCMPC200 which works good but has no
OS/2 support. It is the type with a dongle.
I did a informal test using my collection and found you need
cardbus to take full advantage of a 100bt network. I also
found that the driver and OS make a difference. While
under Windows 98 the Xircom beat out the Linksys, under Linux
the Linksys was better. I think the reason is the Linksys
uses a Tulip chip. The author(s) of the Linux Tulip driver
seem to have a good handle on getting the best out of the
chip. They where not tiptoeing through it when they wrote it. 8->
But I seriously doubt you can get the full 100 Megabits per second
due to protocol overhead, etc.
73 Eric ecottrell_at_doble.com
-----Original Message-----
From: Vincent Poy [mailto:vince_at_pele.WURLDLINK.NET]
Sent: Tuesday, September 03, 2002 3:34 PM
To: thinkpad_at_cs.utk.edu
Subject: 32bit Cardbus 10/100 Fast Ethernet NIC recommendations for
ThinkPad
Greetings all:
Does anyone have any recommendations for 32bit Cardbus 10/100 Fast
Ethernet NIC's that offers maximum performance? I'm using a ThinkPad 770Z
9549-8AU with FreeBSD. The 3Com 3CXFEM656C doesn't work correctly as it's
not routing the IRQ correctly so it keeps going xl0: watchdog timeout.
I've tried the LinkSys 16bit PCMCIA which runs under NE2000 emulation and
it does do 1080Kbytes/sec or 8.64Mbps. The NetGear FA411 16bit PCMCIA
running under NE2000 emulation as well does 300Kbytes/sec initially
(2.4Mbps) but then falls back to 80Kbytes/sec (0.64Mbps). The NetGear
FA511 32bit Cardbus isn't detected at all by FreeBSD. The
Siemens/Efficient Networks SpeedStream 32bit Cardbus works but the maximum
speed is 3.2Mbytes/sec or 25.6Mbps. It seems like it keeps saying tx
buffer underrun. Same with rx. Does anyone know anything that will
actually hit close to 100Mbps on a 10/100 Lan with 10/100 Cisco
2924XL Managed Switch? Thanks!
Cheers,
Vince - vince_at_WURLDLINK.NET - Vice President ________ __ ____
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