----- Original Message ----- From: "MonMotha" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, May 26, 2003 4:52 PM Subject: Re: [luau] Broadband in Hawaii Notes
> > What DSL offers over cable is a consistant throughput. I know there is no > > CIR with DSL but all of our tests and outside sources have indicated that > > cable burts higher but DSL is more staeady. I always recommend people to > > get cable and home and DSL at work. > > > > -Matt > > > Part of this is telephone propaganda. Your traffic still "mixes" with other > peoples', just at a different point (DSLAM instead of local subnet). > > Depending on how crowded your cable subnet is, it may be impossible to exceed > the max bandwidth for the subnet given the caps on the cable modems. For > example, there's like two people on my subnet with a cable modem, each capped at > 2Mbit down, 386kbit up. The capacity of a DOCIS 1.x CM subnet is (IIRC) 52Mbit. > Needless to say, it is impossible for the two of us to starve the local > physical network. Therefore, the only potential problems are at the uplink. I > think RR indy has an OC3 to ATDN cinci and a DS3 to some place in Chicago (just > recently added, I'm not sure about the actual line, tho they do insist that the > ATDN link is indeed an OC3). That's a lot of bandwidht (though everyone in > northern indianapolis with a cable modem is on that link pretty much). I've > heard of people hooking their DSLAMs up to a T1. That's darn slow. > > Basically, you can screw up a system like this no matter what method is used. > DSL just gives you a dedicated pipe the the DSLAM. Where it goes from tehre you > have little control over. The only issue with cable modems is crowded subnets. > This can be especially problematic in older areas that the cable was installed > in before the anticipation of modern digital services like cable modems and > video on demand where LOTS of people share the same physical backbone. > > Really, I tell people to take advantage of the trial offers and get both > (assuming you can get the DSL without a contract). Often, with the introductory > trials, you can have both for the price of one for a few months. Try out both > and see which is better in your area. I set a small business up with a DSL line > at 1.5/768 and it works REALLY well. Someone just a couple miles down the > street had DSL and dumped it for a cable modem because it was horrible. I agree, it is possible to screw anything up! We do a lot of things like Citrix, the servers are in a central point, our customers suffer until they get on our DSL, our customers are 4 hops from our servers. Makes a difference with "real time" apps like terminal servers and IP telephony. People on other DSL or cable are 8 hops at the least. -Matt
