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To: Ahda who wrote (5441)	2/15/1999 11:03:00 PM
From: Frank A. Coluccio	Respond to of 29970

Darleen, at the office of one of my clients I have a set up that... during 8 to 5, forget it. Sometimes it's okay, but often it's a real drudge. It works great, however, after hours when most normal people actually go home. In the case I just described, the client employs two T3s and multiple T1s which support a campus full of sub-net'ed Fast Ethernet and 10BaseT LANs. In other words, the LANs are operating at Switched 100 Mbps (at the servers and backbone levels) and 10 Mbps (to most desks), respectively. This conglomeration ultimately gets connected somewhere up the chain to two redundant higher class routers, which in turn connect via T3s up the line further, where they attach at the 45 Mbps rate onto the 'net. Total access at this point, taking both locations into account, is rated at 90 Mbps. One would think that two T3s (which equate to 56 T1s) would be more than adequate, but they are not during most of the work day. Or are they? Management would say that that is a subjective call. More like a business call. Do I really need sub-second response on all sessions that I initiate? But I digress... In contrast, 12 months ago, one T3 was more than adequate, just to show how fast traffic volume is actually on the rise. [Okay, those same lines are also used to support enterprise traffic on a VPN, but that's also supported in large part by the same Internet Provider who supports WWW access.] At home, here, I use a 56k modem which right now, on a Sunday Evening, is more than adequate for research, surfing and board watching. M-M and graphic downloads, on the other hand, reminds me more of the office during working hours. During the work week, if I'm working at home I can tell you with some precision the time of the day, just by how long (sometimes, how looooong), it takes me to reach certain sites. And so it will be, whenever and wherever you have sharing taking place on the Internet. It won't matter if you have cable, or DSL, or Blimpie the Balloon. Somewhere along the line there is sharing. And if it's shared, it gets snared. It will be this way until QoS and guaranteed tiers of service are offered, and paid for. IMO. In order to achieve this, the provider must over-build to some extent, allowing for adequate head room to support the bursting activity of higher tiered users. Or they must preempt the services of lower tiered users. Very likely it will be a combination of the two. They will eventually achieve this by implementing improved resource reservation protocols, or some variation of switching, and by reserving adequate capacity. How much is adequate? This will be determined by statistical modeling techniques. And then the provider can only hope that they've done their homework correctly. There is going to be nothing fair or egalitarian about this model. Rather, it's going to be one of those you get what you pay for things. End of story. Regards, Frank Coluccio