From: Vincent Poy (vince_at_pele.WURLDLINK.NET)
Date: Tue Sep 03 2002 - 17:23:35 EDT
Hello Eric and the ThinkPad Gang:
On Tue, 3 Sep 2002, Cottrell, Eric wrote:
> Hello,
>
> I am starting to have a collection of PCMCIA NIC cards.
> (humm future EBAY offerings perhaps).
Hehe, me too... I just bought 5 PCMCIA cards the last two days
alone!
> 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.
Yeah, I used to own Xircom stock until Intel bought it out and
paid cash for the shares. Which driver in Linux does the Xircom use? Is
it the same one as the Intel Desktop NICs?
> I also use a Linksys PCMPC200 which works good but has no
> OS/2 support. It is the type with a dongle.
Hmmm, does that one use the 21140 DEC driver or the 21143 DEC
driver? I wonder if the PCM200 which doesn't have a dongle uses the same
chip as well.
> 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->
Interesting. The LinkSys seems to also have a 32k buffer which I
think the SpeedStream I'm using which looks exactly like the SMC doesn't
which may be the cause of the buffer underrun problem. Tulips are good
cards but it seems to depend if you gotten the older 21140/21141 based or
the new 21143 based which basically became Intel when DEC was sold to
Compaq. I used to think NetGear was good but it seems like I've had bad
luck with NetGear for whatever reason.
> But I seriously doubt you can get the full 100 Megabits per second
> due to protocol overhead, etc.
You can't get a full 100 megabits per second but I think you can
get about 90% of it since from my Desktop which is Windows XP Pro using a
Intel Pro 100+ Management to my notebook which has the Mini-PCI 3Com
10/100, it does about 92Mbps when I tried a file transfer. Also, I
noticed something funny. From the FreeBSD machine, my ping times are
5-6ms lower to the ISP's DSL router than my Windows machines, I wonder
what's the cause of that one.
> 73 Eric ecottrell_at_doble.com
Cheers,
Vince - vince_at_WURLDLINK.NET - Vice President ________ __ ____
Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ]
WurldLink Corporation / / / / | / | __] ]
San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ]
HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____]
Almighty1_at_IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin
> -----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 ________ __ ____
> Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ]
> WurldLink Corporation / / / / | / | __] ]
> San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ]
> HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____]
> Almighty1_at_IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin
>
>
>
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