nanog mailing list archives
Re: who offers cheap (personal) 1U colo?
From: "Stephen Sprunk" <stephen () sprunk org>
Date: Sat, 13 Mar 2004 21:56:47 -0600
Thus spake "Steven M. Bellovin" <smb () research att com>
And in fact, there are technical reasons as well. Downstream IP transmission on a cable plant uses any arbitrary channel; if there's a lot of downstream traffic, just displace the Home Gerbil Channel or some such and allocate more bandwidth to IP. Upstream traffic uses the band below channel 1, and it's not easy to add more unless you split the tree and put in another fiber node. This is done for the sake of the repeaters -- the downstream repeaters are fed by a high-pass filter, and the upstream repeaters are fed by a low-pass filter. If too many people are fielding home servers, it affects everyone.
So DOCSIS has a technical limitation which may or may not apply. This is reasonable justification for limiting upstream bandwidth, not for specifying that users can't run servers. If users can run servers effectively in the limited available upstream bandwidth, then there is no _technical_ reason to prevent them. Other last-mile technologies provide symmetric bandwidth yet providers still prohibit servers; this is clearly a business issue, not a technical one. S Stephen Sprunk "Stupid people surround themselves with smart CCIE #3723 people. Smart people surround themselves with K5SSS smart people who disagree with them." --Aaron Sorkin
Current thread:
- Re: who offers cheap (personal) 1U colo?, (continued)
- Re: who offers cheap (personal) 1U colo? jlewis (Mar 14)
- Re: who offers cheap (personal) 1U colo? Christopher L. Morrow (Mar 14)
- Re: who offers cheap (personal) 1U colo? william(at)elan.net (Mar 14)
- Re: who offers cheap (personal) 1U colo? Paul Vixie (Mar 14)
- Re: who offers cheap (personal) 1U colo? Eric Brunner-Williams in Portland Maine (Mar 15)
- Re: who offers cheap (personal) 1U colo? Christopher L. Morrow (Mar 15)
- Re: who offers cheap (personal) 1U colo? Paul Vixie (Mar 15)
- Re: who offers cheap (personal) 1U colo? Eric Brunner-Williams in Portland Maine (Mar 15)
- New email virus? Geo. (Mar 13)
- Re: who offers cheap (personal) 1U colo? Steven M. Bellovin (Mar 13)
- Re: who offers cheap (personal) 1U colo? Stephen Sprunk (Mar 13)
- Re: who offers cheap (personal) 1U colo? Sean Donelan (Mar 13)
- Re: who offers cheap (personal) 1U colo? Andrew Dorsett (Mar 13)
- RE: who offers cheap (personal) 1U colo? Vivien M. (Mar 14)
- Re: who offers cheap (personal) 1U colo? Stephen Sprunk (Mar 14)
- Re: who offers cheap (personal) 1U colo? william(at)elan.net (Mar 14)
- Re: who offers cheap (personal) 1U colo? Laurence F. Sheldon, Jr. (Mar 14)
- Re: who offers cheap (personal) 1U colo? Michael Loftis (Mar 14)
- Re: who offers cheap (personal) 1U colo? David A. Ulevitch (Mar 14)
- Re: who offers cheap (personal) 1U colo? Andrew Dorsett (Mar 14)
- RE: who offers cheap (personal) 1U colo? Andrew Dorsett (Mar 14)