----- Original Message ----- From: "Bret Hughes" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, March 08, 2003 6:00 PM Subject: Re: Large Network, need advice please!!!
> I am confused. Perhaps an overview of what you are trying to do would > be in order. You speak of Internet connectivity through a sat link, I > can get my head around that, but then you ask for a dvb card, Isn't DVB > digital video broadcast? I don't see the connection. www.scsbroadband.com This company offers internet via sattelite 1 WAY - downlink only, at high speeds, and the DBV card is used for this. The request for the data you receive via sat is made via a normal isp coonection (dial-up, isdn, anything). This type of connection if good if you don't need video conferencing or if you don't want to play games on the net. These applications require a fast connection both ways (up+down). The tricky part with the dvb card is that it has a number on simultanious connections (PID) around 30-50 on a regular card. How will this affect the network? That's why I want t know where can I get something better from what theisp offers. > >From a shear networking stand point the satellite terminal will define > what you need to use to connect to it. Never having done this, I am > assuming that there is a service provider and specific equipment used by > them. > The campus network, and the fiber type, connectors, switches NICs etc > are all dependent on the specific physical topology of the proposed > network. For instance your 15km campus (15sq km?). you can get 1500M > out of multimode fiber @ 100Mbs pretty inexpensively. Beyond that > distance and your are looking at single mode fiber designed for long > haul and it is more expensive. Each building (how many? )will need a > dedicated run to the link unless the campus network can provide that. > Assuming CAt 5 copper in each building is preexisting you will need > router with a fiber nic to direct traffic onto the fiber link. The distance between buildings never exceeds 500-650m. The number of buildings is 27. I don't have any wires inside or outside the buildings (network wires) and I must use a media convertor with 1 iniput for fiber and 2 outputs: 1 for continuing the fiber to the next building and another output for an UTP connection to a 100mb switch that will connect the computers in that building. The fiber optci cable does not have to be single mode, I need a cheap sollution and if multimode is cheaper, then... > These are just a couple of questions that need to be addressed. nce > they are, valid questions to fill in the holes will come easier. Like > what is a good 100Mb fiber nic (we have had good luck with allied > telesin )or can a linux box be the router between the cat 5 network and > the fiber backbone (yes). > > If I am misunderstanding the situation please provide enough detail to > clarify your needs. I would suggest getting some real help from someone > who understands these issues. Most large equipment vendors would be > glad to help you with network design as part of the bidding process. > You can then start eliminating proprietary equimpmet where it makes > sense with linux boxes :) > > HTH > > Bret -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
