Re: cable guy "vapor"-izes DSL 3X cable TV troll!

Article View: comp.dcom.modems.cable

Article #419

Back to comp.dcom.modems.cable Previous Next

#419

From: Randy S.
Date: Sat, 03 Feb 2001 18:19

14 lines
2283 bytes

> Realistically, I would say 25-35 people uploading
> >aggressively would effectively "kill" the segment.  Does that sound right, John?
>
> I think the number needed to "kill" the segment is typically much lower,
> perhaps as few as 5-10 -- see my own analysis in
> <news:%oXe6.200$Tf1.8852@typhoon.sonic.net>.

Yes, your cable datarate numbers are more realistic.  If we say the segment supports 27 Mbps
download and 640 x 4 = 2.56 Mbps upload, and that the users are capped at 128 Kbps upload, then
it would take 2,560/128 = 20 users to saturate the upstream channel, assuming NO other normal
traffic.  This could easily mean that realistically 10 users out of 270 (or ~5% which I think
you mentioned earlier) could bring the segment to its knees.

Randy S.

Technical Details

Message-ID: <3A7C4BC2.87730536@ufl.edu>

Path:

arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!nntp-relay.ihug.net!ihug.co.nz!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.atl.bellsouth.net.MISMATCH!newsfeed.atl!news1.atl.POSTED!not-for-mail

References:

<3A64B680.2A79F24D@erols.com> <3A76B6CA.73B36B26@mynetwatchman.com> <4OGd6.100$mW6.5202@typhoon.sonic.net> <3A776B57.C495242C@mynetwatchman.com> <R3Ld6.144$mW6.6010@typhoon.sonic.net> <3A782325.2538A5E2@mynetwatchman.com> <diEe6.142$Tf1.5347@typhoon.sonic.net> <3A7B357B.3C2C1C79@ufl.edu> <S4Ke6.163$Tf1.6485@typhoon.sonic.net> <3A7B76D4.AA1FFC9F@ufl.edu> <4UKe6.5359$MA5.130255@news2.atl> <3A7B7FD3.9ABE0395@ufl.edu> <kSXe6.204$Tf1.9002@typhoon.sonic.net>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 1122a6,2145df83169cbbc6
X-Google-Attributes: gid1122a6,public
X-Google-Thread: 113850,916316de6f72ceb
X-Google-Attributes: gid113850,public
X-Google-ArrivalTime: 2001-02-03 10:21:52 PST
Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!nntp-relay.ihug.net!ihug.co.nz!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.atl.bellsouth.net.MISMATCH!newsfeed.atl!news1.atl.POSTED!not-for-mail
Message-ID: <3A7C4BC2.87730536@ufl.edu>
From: "Randy S." <rswitt@ufl.edu>
X-Mailer: Mozilla 4.74 [en] (Windows NT 5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
Newsgroups: comp.dcom.modems.cable,bellsouth.net.support.adsl
Subject: Re: cable guy "vapor"-izes DSL 3X cable TV troll!
References: <3A64B680.2A79F24D@erols.com> <3A76B6CA.73B36B26@mynetwatchman.com> <4OGd6.100$mW6.5202@typhoon.sonic.net> <3A776B57.C495242C@mynetwatchman.com> <R3Ld6.144$mW6.6010@typhoon.sonic.net> <3A782325.2538A5E2@mynetwatchman.com> <diEe6.142$Tf1.5347@typhoon.sonic.net> <3A7B357B.3C2C1C79@ufl.edu> <S4Ke6.163$Tf1.6485@typhoon.sonic.net> <3A7B76D4.AA1FFC9F@ufl.edu> <4UKe6.5359$MA5.130255@news2.atl> <3A7B7FD3.9ABE0395@ufl.edu> <kSXe6.204$Tf1.9002@typhoon.sonic.net>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Lines: 15
Date: Sat, 03 Feb 2001 13:19:46 -0500
NNTP-Posting-Host: 216.78.160.117
X-Trace: news1.atl 981224505 216.78.160.117 (Sat, 03 Feb 2001 13:21:45 EST)
NNTP-Posting-Date: Sat, 03 Feb 2001 13:21:45 EST

Reply to Parent Message