Firewall Wizards mailing list archives
RE: Network Traffic Violations
From: Matthew Gast <gast () iprg nokia com>
Date: Sat, 12 Sep 1998 09:06:30 -0700
At 02:41 PM 9/10/98 -0600, you wrote:
Telco-ISP's will survive because the provide the same bandwidth to each user regardless of how many users in your area are using the service. I think you'll find that cable modems, you are sharing bandwidth with all the other houses in your area.
That's actually not true--DSL service also shares bandwidth: home <-> DSL line <-> DSL access multiplexer <-> regional ATM net run by telco or other common carrier <-> your ISP <-> Internet With low-end DSL service, traffic over the regional ATM net is sent at the lowest possible priority (UBR--Unspecified Bit Rate, or "Please Drop Me on the Floor if You've Oversubscribed Your Cell Cloud"). One could possibly construe this as sharing bandwidth with your entire geographic region, like the San Francisco Bay Area. Unfortunately, the technology used by ATM or Frame Relay to implement QoS also lends itself to oversubscribing the capacity, and perhaps using the poor performance to extort more money for guaranteed bandwidth. One argument I've seen used to push telcos towards adopting DSL is that they can have tiered pricing based on guaranteed bandwidth over the ATM cloud. Is anybody familiar enough with cable modems to know how large an area you're sharing bandwidth over? If it's only a block or an apartment complex or something relatively small, the impact of oversubscription could be smaller than with DSL. --Matthew ------------------------------------------------------------ Matthew Gast main support line: 408-990-2525 Customer Support Engineer support fax: 408-743-5680 Nokia IP (Routing Group) 232 Java Drive, Sunnyvale, CA 94089 ------------------------------------------------------------
Current thread:
- Re: Network Traffic Violations, (continued)
- Re: Network Traffic Violations Antonomasia (Sep 06)
- Re[2]: Network Traffic Violations Mike Baxter (Sep 07)
- Re: Network Traffic Violations Bill_Royds (Sep 10)
- RE: Network Traffic Violations jrtietsort (Sep 10)
- RE: Network Traffic Violations Ted Doty (Sep 11)
- RE: Network Traffic Violations Rick Smith (Sep 11)
- RE: Network Traffic Violations Ted Doty (Sep 13)
- RE: Network Traffic Violations Rick Smith (Sep 13)
- RE: Network Traffic Violations David Lang (Sep 14)
- RE: Network Traffic Violations Dominique Brezinski (Sep 15)
- RE: Network Traffic Violations Rick Smith (Sep 11)
- RE: Network Traffic Violations Matthew Gast (Sep 11)
- RE: Network Traffic Violations Woody Weaver (Sep 13)
- RE: Network Traffic Violations Paul D. Robertson (Sep 14)
- RE: Network Traffic Violations Woody Weaver (Sep 13)