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PA2AGA > TCPDIG 31.08.96 14:14l 211 Lines 7291 Bytes #-10901 (0) @ EU
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Subj: TCP-Group Digest 96/176C
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Message-Id: <tcp_96_176C>
From: pa2aga
To: tcp_broadcast@pa2aga-1
Subject: TCP-Group Digest 96/176C
X-BBS-Msg-Type: B
I currently pay $24.50/mo + usage (which runs $7-10/mo) to Pacific
Bell for my ISDN line. And my employer had to buy the Ascend Pipeline
box for a not-insignificant cost. A flat-rate $29.95/mo charge for a
high speed internet connection -- with the carrier tossing in the
modem -- is a bargain in my book.
If it works, that is. Reliability is the cable companies' biggest
problem, but as I said earlier they seem to be finally getting serious
about it. This is *the* issue to watch.
Despite their reputation the phone companies aren't exactly perfect on
reliablity either. There is very little (if any) redundancy in the
existing loop plant to recover from cable cuts, as happened to me a
summer ago.
>get decent throughput (imagine what a few hundred subscribers would do
>to your throughput - it _could_ happen here in Silicon Valley), the
>service would
>probably end up slower than 28.8 dialup now. On the other hand, in San
For many years, we've frequently had upwards of a few hundred people
(there are 255 addresses in a traditional Class-C IP subnet) sharing
10 megabit/sec pipes called Ethernets. In many cases, the expected
per-user loading is much higher than one would expect for interactive
web surfing, e.g., diskless workstations, heavy NFS
crossmounting). Although some of these Ethernets can and do become a
little sluggish, I doubt that any users of even the most heavily
loaded Ethernet would willingly trade it for a 28.8 dialup.
Phil
------------------------------
Date: Wed, 28 Aug 1996 22:13:55 +0100 (BST)
From: alan@lxorguk.ukuu.org.uk (Alan Cox)
Subject: PPP/SLIP in connected AX25?
> All cable modem ideas seem to depend upon technology which is grossly
unsuited
> to network access. In particular, they are highly asymmetric with lots of
The stuff being laid in the UK at least now days is a little better suited.
> bandwidth to you and little bandwidth from you, and what bandwidth there is
to
> you must be shared. I am convinced that they are really secretly building
an
> infrastructure for video on demand or -- worse -- home shopping.
Undoubtedly ;). Most of the bandwidth from an ISP is net->customer. This is
why the web is great for ISP's. We get to fill our outgoing bandwidth with
pictures and stupid logos and our incoming bandwidth with downloads of
naked females for the customers.
------------------------------
Date: Thu, 29 Aug 1996 15:23:44 -0700
From: brian@nothing.UCSD.EDU (Brian Kantor)
Subject: PPP/SLIP in connected AX25?
Again on the Win-95 kludge front:
Seems to me it wouldn't be too hard to modify the TNC code so that it
has a 'PPP' mode, a transparent mode where the PPP framing character
would force sending of the buffer (including the framing chars) but only
if the buffer contained more than just the framing char. That would be
a nice touch. Maybe Paccomm could add that as an option mode to their
TNC - call it the "Internet compatability mode". Sell a million upgrades.
- Brian
------------------------------
Date: Thu, 29 Aug 1996 06:08:42 -0500 (CDT)
From: ssampson@othello.tinker.af.mil (Steve Sampson)
Subject: Radio Links and AX.25 backoff
> How does that sound ?
Sounds like a nice half-duplex, low baud-rate solution, to 1980's technology.
At 200kbps it's a dinosaur. If it ain't DMA, I ain't interested :-)
---
Steve
mailto:ssampson@othello.tinker.af.mil
http://oklahoma.net/~ssampson
------------------------------
Date: Thu, 29 Aug 1996 19:11:59 -0500
From: David A Willmore <willmore@cig.mot.com>
Subject: Radio Links and AX.25 backoff
On Aug 29, 6:08am, Steve Sampson wrote:
> Subject: Re: Radio Links and AX.25 backoff
> > How does that sound ?
>
> Sounds like a nice half-duplex, low baud-rate solution, to 1980's
technology.
> At 200kbps it's a dinosaur. If it ain't DMA, I ain't interested :-)
Well, that will teach me to use these crappy WD8003 ethernet cards. What was
I
thinking trying to do ethernet with only a PIO interface. I didn't know I
needed DMA to go faster than 9600 baud.
Let's be realistic, if a low end 486 can't keep a low enough latency on
interupts that it can't keep a 4k buffer filled, someone really blew it with
the interupt code.
Why use DMA when buffers are a lot simpler WRT hardware and software?
Cheers,
David
------------------------------
Date: Thu, 29 Aug 1996 15:27:39 -0700 (PDT)
From: jmorriso@bogomips.com (John Paul Morrison)
Subject: TCP-Group Digest V96 #175
>
> Date: Wed, 28 Aug 1996 00:46:10 -0700
> From: "Ron Curry" <recurry@insighttec.com>
> Subject: advanced networking
>
> Seems like there is little reason to build a ROM version of Linux. A
> 386/486/Pentium mother board (one of the P54C with power management) with a
> PCMCIA flash card will work just fine. The flash cards are available for
> less than $200 for 15 mb and about $50 for 5mb. That is more than enough to
> build a basic system for a router. No moving parts and it looks to the bios
> and software just like an ATA device.
OK, where do you get PCMCIA flash cards for $50? I looked on
the web at one of the online shops and 5MB was around $280 and there wasnt
much variation.
I think a ROM version of Linux (or NOS) would be too complicated
and expensive. If there's an existing product in the market that
emulates a floppy or hard drive, then it should be cheaper and
wont require more programming.
Whatever happened to 2.88 MB floppies? That's still probably too
small for a router with bells and whistles.
>
> Ron
>
---------------------------------------------------------------------------
BogoMIPS Research Labs -- bogosity research & simulation -- VE7JPM --
jmorriso@bogomips.com ve7jpm@ve7jpm.ampr.org jmorriso@ve7ubc.ampr.org
---------------------------------------------------------------------------
------------------------------
Date: Thu, 29 Aug 1996 22:52:34 -0700 (PDT)
From: pmac@coffs.net.au (Peter McAdam)
Subject: unsubscribe
unsubscribe
------------------------------
End of TCP-Group Digest V96 #176
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