celeste@coherent.com (Celeste C. Stokely) (05/17/89)
In v7n277, I (celeste@coherent.com) mentioned my
"1 poor, tired cheapernet", and said we will soon "be going to thick
ethernet".
I should have been clearer. My mailbox is flooded with people telling me
that thick has no greater capacity than thin. I *KNOW* that.
Thin is grotesquely difficult to troubleshoot when you suspect physical
problems. With thick, you can shoot a TDR down it and see what's up. Also,
thin net tends to be casually installed, since it's cheaper, and the net
problems go up with the casualness of the installation.
My thin net shielding is a joke--it's the stuff that Sun provides with
3/50s and 3/60s. My thick net cable will be REALLY well shielded.
Also, we're near the ragged edge of acceptable length on our thinnet, and
I need twice the length of net cable very soon.
For a young startup with a tiny budget, thin net was fine. Now, though, we
can't afford the net problems, and we can afford the better cable and net
components.
..Celeste Stokely
Coherent Thought Inc.
UUCP: ...!{ames,sun,uunet}!coherent!celeste Domain: celeste@coherent.com
Internet: coherent!celeste@ames.arpa or ...@uunet.uu.net
VOICE: 415-493-8805 FAX: 415-493-1555
SNAIL:3350 W. Bayshore Rd. #205, Palo Alto CA 94303shj@ames.arc.nasa.gov (Steve Jay) (05/17/89)
In v7n277, Celeste C. Stokely (celeste@coherent.com) mentions her "1 poor, tired cheapernet", and says they will soon "be going to thick ethernet". There is no difference in performance between thick and thin ethernet. Simply replacing a thin cable with a thick one + tranceivers will not make any difference in performance, unless you are exceeding the maximum distance and/or the number of stations allowed on a thin segment, in which case you might see a reduction in errors and collisions. Stokely also says they will be splitting into two nets. That will probably make a noticable difference. Steve Jay domain: shj@ultra.com Ultra Network Technologies Internet: ultra!shj@ames.arc.nasa.gov 101 Daggett Drive uucp: ...ames!ultra!shj San Jose, CA 95134 408-922-0100