- Does PPPoE support data compression?
- Posted by lash on July 4th, 2003
Since PPPoE is based on the PPP protocol (which
supports data compression, from what I understand),
does PPPoE support data-compression?
If so, is that a feature most ISPs and home
routers (Linksys, Netgear, D-Link, etc.) implement?
- Posted by David H. Lipman on July 6th, 2003
Yes...
and
Yes.
Dave
- Posted by Tim Keating on July 7th, 2003
On Sun, 6 Jul 2003 10:15:18 -0400, "John D Loop"
<jdloop@remove.bellsouth.net> wrote:
If they did compression.. It would blow goats even more..
Ever notice the extra time latency? Especially during peak times?
That's the poor little concentrator router cpu(s) trying to keep up
with de/encapsulating PPPoE traffic for 1000's of active IP's.
Adding compression would add to their work load at least 100x..
(I.E 8000 customer CPU's de/compressing verses 1 to 8 relativity slow
cpus in PPPoE concentrator router).. choke.. choke.. choke..
-----
It been a while since I measured the effect of PPP compression for
DIAL-UP modem pools. During peak ISP usage times it could add several
hundred ms of extra delay to a packet. (Ping to local ISP
system/router, at most 1 or 2 hops from the concentrator).
- Posted by abuse@MIX.COM on July 7th, 2003
Tim Keating <NotForJunkEmail@directinternet11.com1> writes:
Only when you buy service from chicken shit vendors who overload
their facilities - Stac compression works extremely well on ISDN
for example.
Billy Y..
- Posted by John D Loop on July 7th, 2003
<abuse@MIX.COM> wrote in message news:bebpvu$fro$2@reader1.panix.com...
And remind me how much faster ADSL is than ISDN.......... About 10 times
maybe?
J
--
Check my web site for tips on homenetworking and safe computing
www.pccitizen.com
- Posted by David H. Lipman on July 8th, 2003
Aren't you comparing apples to oranges ?
Which ADSL are you referring to ? ISDN is fixed, ADSL varies.
Dave
- Posted by John Loop on July 8th, 2003
In our experience maybe 90% of the customers are running 1 Mbs+
Maybe it is because of all the RTs BS has.
John
--
www.pccitizen.com Tips on home networking and safe computing
"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote in message
news:u7pOa.16492$Ha.1062@nwrdny02.gnilink.net...
- Posted by abuse@MIX.COM on July 8th, 2003
David H. Lipman <DLipman~nospam~@Verizon.Net> writes:
No, compression is compression, period. You either have hardware
that can cut it, or not. But if you do there is something to be
gained for some types of data - excluding the obvious zipped files,
jpegs and all the other already compressed stuff.
Massive amounts of cpu power are pretty cheap these days, there's
no reason why it can not be a cost effective thing - unless you're
dealing with greedy net vendors and phone companies.
Billy Y..
- Posted by John Navas on July 8th, 2003
[POSTED TO comp.dcom.modems.cable - REPLY ON USENET PLEASE]
In <beeth6$hrj$1@reader1.panix.com> on Tue, 8 Jul 2003 17:03:34 +0000 (UTC),
abuse@MIX.COM wrote:
When you look at typical Internet data, the gain is relatively small.
The amount of horsepower to do real-time compression at broadband speeds is
still expensive, and not justified from a cost standpoint, in part because
consumer broadband typically exceeds the speed at which data is being
transmitted.
p.s. Broadband providers are hardly greedy -- consumer broadband is a
bargain, and not a lucrative business.
--
Best regards,
John Navas <http://navasgrp.home.att.net/>
CABLE MODEM/DSL GUIDE: <http://Cable-DSL.home.att.net/>
