Cable/DSL "shared" access myth (was Re: [TriLUG] Port 25 blocked)
J. "Spydir Web" Powers
spydir at netsyndrome.net
Tue May 18 16:07:38 EDT 2004
bellsouth now offers fastaccess "Xtreme DSL" for I believe $34.99 a
month, which gets 3Mb down and 384Kb up.
Also reading your post I can't help but think you're being payed to say
that. I'm not saying you're some secret advertiser or something, I'm
just saying you SHOULD be one ;-)
Jeremy Portzer wrote:
>On Tue, 2004-05-18 at 15:32, Stephen Hoffman wrote:
>> I'm still feeling the service out, but so far I love it...The reason I
>>stayed with DSL was the dedicated bandwidth (I'll sacrifice speed for
>The idea that DSL has "dedicated" bandwidth is one of the biggest myths
>of broadband Internet. Sure, the bandwidth is "dedicated" from the CO
>(Central Office) or DSLAM (DSL access module) for the "last mile" to
>your home or business. But it's not dedicated from there upstream!
>You're still sharing bandwidth with your neighbors, and anyone else at
>at your ISP, where the ISP connects to the Internet backbone! Plus,
>your DSL modem has significant bandwidth caps that negate how much of
>the backbone you can use anyway.
>A cable modem connection shares the cable with your immediate neighbors;
>usually a very small number like 10-15 (maybe slightly more in
>apartments). But this doesn't matter, because the capacity of the cable
>modems is high (55 Mbit or something). Your individual modem is limited
>to a much smaller value (with TWC it's usually 3 Mbit down/384Kbit up).
>So you're never going to be in contention with your neighbors anyway!
>The fact is, cable modems offer much more bandwidth for the money
>(standard DSL in this area is often 1.5 down/128kbit up -- Cable is
>twice the download and three times the upload speed). Cable is usually
>slightly less absolute cost than DSL ($41.95/mo. for Earthlink vs. 49.95
>for full DSL service). Sure, both cable and DSL can become congested
>during peak periods when the Internet *backbone* -- the ISP's upstream
>connection -- becomes clogged. But you should NEVER have any problem
>due to congestion in the "last mile" section, even though this is
>technically "shared" in cable access. The shared access segment is
>simply not a factor in your connection's speed or utility!
>> I'm not quite sure if this is a by product of the
>>upgrade, but it seems that when I ssh home (and only ssh) that my
>>keystrokes are heavily delayed? but I might just need to restart ssh
>>(been up for over 100 days?)
>No, the ssh daemon's uptime has no relation to anything. If your
>keystrokes are being delayed (known as high latency), that could mean
>that you are downloading or uploading something in the background that
>you aren't aware of (check for trojans, rootkits, etc). It may also be
>a misconfiguration with the telco or ISP's equipment.
>> As far as the process all I really did was go online and change my
>>service...two days later I lost internet in the middle of the night...I
>>restart and I now have a free static IP and consistantly download at
>>300K and upload at about 45K so the speed is about on par with what I'd
>>expect. Losing mail wasn't the biggest pain in the ass, although I'm
>>sure the list got more then it's fair share of bounces from me
>> So so far, I'd say go for it...I didn't have to re-commit for any time,
>>no cost to upgrade and I'm only paying $47 and change after taxes, up
>>from $45. For twice the speed and a static IP, I'll gladly pay $2.00
>This does sound like a good deal, and I don't have a problem with your
>choosing it based on speed, static IP, etc. But please don't believe
>that somehow your "dedicated" connection is any better because of that.
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