>> One other (off topic) question: For a small network (~8 boxes), that isn't
>> going to get any bigger, and doesn't really have very large bandwidth
>> demands, should I go with 10baseT and buy a hub or can i just use 10base2
>I've seen some replies to this as well, and I don't understand the bandwidth
>concern. They're both 10Mbps, plain and simple. "..just use 10Base2" sounds
>a little odd to me, since it's not a performance issue, but rather a layout
>and maintenance issue.
Not quite. 10BaseT incurs a repeater delay each time you go in or out
of a 10BaseT hub--so, if you connect a host to a workstation through a
hub, you have two repeater delays in the path (one going in, one coming
out). Cascading hubs makes it worse. 10Base2 doesn't incur any repeater
delays at all, so you end up with more usable bandwidth using coax
instead of twisted pair. The Ethernet spec limits you to five repeater
delays, beyond which performance will start to degrade.
Quote:>The hub just gives you a bus where you don't have to worry about laying things
>out in a straight line or bringing down the net whenever you add/remove some
>machine. If the machines are in different offices, 10BaseT is most convenient.
>If you've got all the machines in the same lab, either is fine, and 10Base2 is
>often more convenient. I mean, if you've got two rows of computers, laying out
>8 5-meter wires is awkward when compared with just stringing one wire from
>machine to machine. However, if you've got a set of offices, placing a hub
>in a central location a running a wire to each machine is easiest and more
It also depends on how much area you're needing to cover, and how far apart
you need connections. 10BaseT is limited to 100m, whereas 10Base2 can go
185m (actually, it'll go further, but that's the spec; I recall someone
finding a 1200m 10Base2 net that was slow, but functioning). The office
area I'm in right now I had to wire with 10Base2 (managment politics). I'm
in the process of converting to 10Base2, but my labs and manufacturing lines
are almost all 10Base2 due to distances and the need to get every bit of
bandwidth out of the cables I can. We build computers, and install software
via a networked arrangement. The image files tend to run around 130-160MB
each, and with 16 servers feeding about 120 "hubs" (computers with special
16 port parallel cards, no relation to 10BaseT) trying to download to
4000-4300 computers per shift, I don't have bandwidth to waste.
Each situation is different....
The Chairman of the Board and the CFO speak for SCI. I'm neither.
"All the observing stops, of course, when the observer hits the
singularity at the center of the black hole." Dr. Robert L. Forward