On Thu, 12 Dec 2024, Enrico Teotti wrote:
> I've asked some weeks ago if it was better in a LTSP lab to use a switch
> or an HUB. Now I'm looking for a switch and a "technical" have tell me
> that a good switch is about 600€ this sound amazing... the one I've
> choose is a 3Com OfficeConnect dual speed 16ports. It's around 100/130€.
> He told me that cheaper switchs like that, are not really switchs... and
> slow down connections... he talks about they have got two stacks... one
> for 10Mb (8 ports) another one for 100Mb (the other 8 ports)... not
> comunicating directly together., causing slowing down when a 10Mb port
> try to contact a 100Mb port. A good switch should be a Cisco... that
> have just one stack... "that make quikly the connections". And I've
> think that a good girlfriend should be Monica Bellucci ;-)
> Maybe a Cisco switch is better than the 3Com I've choosed but is it
> really necessary?
> He try to convince me that even if I've got a very good server, cables,
> fast ethernet on the clients if the switch is what him defines "a
> cheaper switch" all the stuff could work very bad.
> He tells that the x protocols is not as fast as other protocols... is
> windows terminal services faster? :-) I've not asked this to him.
> This sound a little bit amazing because in the lab I've tested at the
> school I work, the lab and NICs are 10/100 but there is an hub/switch...
> a device that is less smart that a switch isn't it?
> I'm not an hardware guru, I just know the difference between an HUB and
> a switch and how a switch works. I've never heard about the think he
> talks about... someone can tell me if a switch like the one I've choosed
> will really slow down the LTSP lab? And more important, the think about
> the two stacks is true? Someone knows an internet document about that?
Enrico,
I use small 3Com switches in many places without any real ill
effects. They work very well and while the throuput is not the same as on
a Cisco Catalyst, it is definitely good enough for running terminals. It
is true that the throuput drops when you mix 10Tx and 100TX conections,
but it drops by less than 10% (my rather informal measurments). All in
all, they outperform ANY hub. The last batch I bought was priced at about
$80 for 16 ports. There are other, even less expensive switches that
perform very well - Netgear, D-link, SMC, many others. Your techie is a
bit full of himself, tune him out, get an inexpensive switch and have fun!
julius
p.s. if you can get good, straight to the closet wiring, and you can
afford good managed switches, go that way - performance will be better and
troubleshooting will be much easier.
-------------------------------------------------------
This SF.net email is sponsored by: IBM Linux Tutorials.
Become an expert in LINUX or just sharpen your skills. Sign up for IBM's
Free Linux Tutorials. Learn everything from the bash shell to sys admin.
Click now! http://ads.osdn.com/?ad_id78&alloc_id371&op=click
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on irc.freenode.net
