<div>That seems to be alot for that switch. It isn't really designed to be a switch for your MDF. Plus there isn't much redundancy like redundant power supplies. I would be looking at the 4500 class. That switch would be what I would put in your classrooms and lab. Plus I believe that the 4500 can support up to a 10GB link. Cisco used to do that by combining ports, they probably still do it that way. Also don't forget that ethernet technology is considered satured at a rate well below what seems possible. In the old days, it used to be around 40% due to all of the collisions on a hub based network. Since each port on a switch is a collision domain, I am sure that it is a bit higher than 40%. Token ring technology was a much more efficient technology, just didn't have the speed of ethernet at the time.</div> <div> </div> <div>Ron</div> <div> </div> <div> </div> Ronald R. McDaniel Conecuh County Schools (251) 578-7073 x26 (251) 230-0658 cell <A href="mailto:rmcdaniel@indata.us">rmcdaniel@indata.us</A> <BLOCKQUOTE style="PADDING-LEFT: 8px; MARGIN-LEFT: 8px; BORDER-LEFT: blue 2px solid"> -------- Original Message -------- Subject: Re: [K12OSN] networking wisdom needed From: Peter Hartmann <ascensiontech@gmail.com> Date: Wed, August 24, 2005 1:02 pm To: "Support list for opensource software in schools." <k12osn@redhat.com> Oh yeah BTW. I am planning on getting 16, 24 port gig uplink switches for the classrooms and lab. Although this year we're only going to have 100 terminals and 1 dual opteron server w/ 6gb ram. I intend to have 3 or more gig nics linked with 802.3ad on the server although maybe I shouldn't count on that working. Les, how do figure 200 terminals? By Hucks' formula that would need 20gb capacity. That's totally saturated of course. Unless I'm misunderstanding something. I just want to make sure that we have a switch that we can grow with. Thanks, Peter On 8/24/05, Brandon Kovach <bkovach@logrog.net> wrote: > That's about 100 times more than they will need. Your bottleneck will be > in the server. Past that, a 100 mb switch works great. If you are going > to hook up several switches, I recommend a gig backbone, but .... > > IMHO > > BK > > Hey Folks, > > I'm looking into an older model Cisco switch for our backbone. It's > > the Catalyst 2948G-GE-TX. The specs say, "the 48 10/100/1000BASE-T > > ports [can] share 12Gbps of capacity (or 6Gbps full-duplex) into the > > switching fabric. " How many terminals could that support max? > > Granted I don't think the whole school needs to play Tux Type > > simultaneously. > > > > Thank you, > > Peter > > > > _______________________________________________ > > K12OSN mailing list > > K12OSN@redhat.com > > https://www.redhat.com/mailman/listinfo/k12osn > > For more info see <http://www.k12os.org> > > > > > -- > Life is a race. Don't lose. > > _______________________________________________ > K12OSN mailing list > K12OSN@redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see <http://www.k12os.org> > _______________________________________________ K12OSN mailing list K12OSN@redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see <http://www.k12os.org> </BLOCKQUOTE>