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To: fyodor_ who wrote (56928)	10/2/2001 6:47:18 PM
From: milo_morai	Read Replies (1) \| Respond to of 275872

Fyodor, working for a Large HSD provider, I disagree with you, we don't care so much about the nominal bandwidth used on a circuit. We do look for people that are hosting a ftp site, but that's they the upsteam limit is in place to deter that use but what's ironic is we never come anywhere near 50% circuit use on the upsteam ever. I personally think 128k is pretty slow on the upsite. We look at Max peaks of data during peak hours and that is the only concern any major ISP concerns themselves with. If you understand a HFC plant you'd understand that 64QAM DOCSIS supports 27Mbps per 6Mhz channel. Almost all Cable Modems are limited on a per Modem basis. @home for example limits downstream to 10Mbps and upstream to 128kbps. Said users are entitled to this bandwidth as it's what they pay for. the uBR's that the Modems talk to have 100Mbps outputs that then tie into SONET backbones to the Internet. The bottle necks are usually imposed by FTP sites. It's far better to let a user download at the highest rate to get him off yourb FTP site in the most rapid manner, so another user can log on. Modem users are the wost offenders to bogging down a FTP site as you have 300 people at 45Kbps. Most sites have a 300 FTP login limit. So 1.5Mbps(~DS1) of bandwidth is being consumed and no other users can login to site. It's better to have large spikes in bandwidth as you can accomodate more users over a given amount time. M.