re: ISDN uses for Linux [was something unrelated ;-) ]

[TMatsumu@example.com]

Form: Reply
Header: Adaptec
Text: (27 lines follow)
Craig,
  The pickin's for shipping ATM 25 NICs that support IP over ATM, and LAN 
Emulation is limited to Adaptec and IBM I believe.  Madge, ATM Ltd., First 
Virtual, and others support one or another of those protocols and may be 
shipping now.  Interphase, Efficient Networks Inc, and Olicomm have all 
announced support for the 25.6Mbps standard and low prices ~ $300 to ~$400 
when they ship.

Regarding Linux, I believe ENI is the only driver available, bit I'd check 
with Werner Albergsmaier (sp?) who wrote the first Linux ATM driver I know 
of.  The Adaptec ATM 25 NICs achieve 97% of theoretical TCP throughput on 
Solaris and Windows NT which is about 22Mbps, so I'd hope Linux wouldn't be 
any slower.  In fact, there was a discussion on the Linux ATM mailing list 
awhile ago with Linus and Werner and others in discussion on how much one 
could get out of 155 (Lan Times & Data Communications rate Adaptec at > 
100Mbps, most others below 50Mbps).

So if you want ATM on Linux today, it might have to be 155 only, and ENI 
only.  Please check and let me know if there is any new news.

ATM 25 and ATM links in general can be found from my home page 
http://www.adaptec.com, hit the ATM button, and go from there to 
www.whitetree.com (a maker of a relatively inexpensive 12 port ATM25/ether10 
switch, with 2 option slots for 2 155 ATM hookups) for more ATM 25 info.

Ted

Original text: (30 lines follow)
>From owner-tlug@example.com, on 3/28/96 12:20 PM:
To: tlug@example.com

On 27 Mar 1996 TMatsumu@example.com wrote:

>   I can't understand Ether 10/PCI mentality.  I've always been able to 
> attain line speed of ATM 10 on ISA bus fine.  I'd highly recommend you do 
a 
> per port comparison and scalability review of ATM 25 before you jump out 
and 
> get Ether 100 nics and hubs.

Sorry if this has already been discussed, but where do I get info
on ATM 25 cards, etc. that would have the Linux driver?  What
are some rough figures?  The 100Base-T solution looked pretty
cheap and also had the advantage of allowing the use of 10BaseT until
the hubs could be upgraded.

Regards,
Craig


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Craig Oda 	craig@example.com		http://www2.twics.com/~craig
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