🚀 go-pugleaf

Dino Hsu (dino1@ms1.hinet.net) penned:
: I am a novice network administrator, I need some answers on BNC
: cabling, please hlep me, if you know the answers and if you have
: similar experience.

First off, BNC is the connector on the end of the cable.  The cable is 
RG-58 or similar 50 ohm coaxial cable.

: 1. What is the length limits of BCN cabels ? The max total length and
: the max segment length ?

It's called 10Base2 for 200 meters, actually 185 meters.

: 2. If the total length is too long, what's gonna happen ? Is it that
: no nodes' gonna connect to any servers, or just those nodes that are
: too far from the servers will encounter connection problems ?

It's like if you step on a crack, it may break your mother's back.
Try it and find out.

: 3. If I would like to get the length longer, should I get a repeater,
: a bridge, or a router ? What's the difference ?

RTFM, that is read the FAQ.  Posted here or to the comp.answers 
newsgroups, or check my .sig for another URL.

: 4. I discoverd a phenomenon lately, if the total length is
: approximately double the limit, and I position two servers as one near
: one end and the other near the orther end, there will be no connection
: problems. So may I say the server can be treated as a kind of repeater
: or router?

Sounds fairly whacko to me.

: 5. What's the benifits if I use a hub instead of BNC cabels?  Take
: into consideration the necessity to rebuild the cables distribution
: and there are cosmetic issues for my office.

One break in a 10BaseT cable brings down a single workstation.  One break 
in a 10Base2 cable brings down the whole network.

: 6. Are there any standard diagnosis procedures when some nodes get
: connection problems ? What kind of tools or implements are required ?
: Are there any prevention procedures or network design principles?
: Thanks in advance.

RTFM.  Use common sense.  Keep a few lengths of coax and terminating 
resistors handy to isolate segments.  etc. etc.



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