[WinMac] Re: WinMac Digest #248 - 03/09/99
David Cabin(dsc[at]ecsd.re50j.k12.co.us)
Wed, 10 Mar 1999 10:32:10 -0700
> Try using the proper ends with the proper cable. Patch cables are supposed to be
> stranded while solid core wire is for in the wall. Solid core wire is terminated
> using a punch down connector. A RJ-45 connector can be used but is better be made
> to crimp on to a solid core. There are two types of RJ-45 ends one with straight
> teeth for solid core and one for offset teeth for stranded. Though you can use the
> solid core ends on solid core wire, I recommend using a 568B connector and then
> using a stranded patch cable to go to the device. I do not recommend running a
> solid wire directly into a hub.
dsc
> Subject: Ethernet troubles - off topic
> Date: Tue, 09 Mar 1999 15:33:50 -0600
> From: "Nick Scalise" <nicks@radiks.net>
>
> I have a problem I hope someone can help with. I subscribe to a couple other
> lists but this one seems to have the most professionals responding.
>
> I have been setting up a Mac network for a small town newspaper over the
> last few weekends. The network consists of a mix of Apple 6100's, 7100's
> 8100's, G3's and 3 laser printers. All boxes are running OS 8.1 or 8.5. The
> x100's have Farallon ethermac transceivers and all boxes are connected to a
> Farallon Starlet 16 port hub using Belden brand Cat5 bulk solid core wire.
>
> The problem we were running into is that when we got to plugging a machine
> into the last port in the hub, the hub would only recognize 'stranded' cat5
> cable (not solid core). It didn't matter which machine it was. If it was
> going into port 15 it would only 'see' stranded cable. (Port 16 was not
> available because the uplink port is in use.) Has anyone heard of this? The
> cable run to the last port was not more than 30 feet. Most of the cables are
> ~50ft.
>
> We got the whole thing running but I am curious as to why the trouble with
> the solid core cat5. Is it that solid core sucks?
>
> Any insight will be appreciated.
>
> --
> Nick Scalise
> nicks@radiks.net
>
> ------------------------------------------------------------------------
>
> Subject: Re: Ethernet troubles
> Date: Tue, 09 Mar 1999 19:34:55 -0500
> From: Dan Schwartz <expresso@snip.net>
>
> Hmmm... This is a good one!
>
> There are a few possibilities, all interrelated to impedance:
>
> 1) The solid cable is slightly out of spec, but the stranded cable is
> closer to spec;
>
> 2) The hub itself is marginal - Either the power supply voltage to the
> backplane, or similarly as the current load increases the voltage drops;
>
> 3) The output impedance of each/any of the Macs is out of spec... This is
> unlikely due to the variety of Macs you are using.
>
> My suggestions:
>
> A) Try another hub, preferably of another make/model;
>
> B) Boost the AC voltage to about 130 - 135 volts to the hub in case the
> hub power supply is marginal.
>
> ¿ Is your uplink (Port 16) UTP or AUI (coax)? The power drain for AUI is
> much higher...
>
> This is definitely an electrical problem...
>
> Cheers!
> Dan
>
> At 03:33 PM 3/9/99 -0600, you wrote:
> >I have a problem I hope someone can help with. I subscribe to a couple other
> >lists but this one seems to have the most professionals responding.
> >
> >I have been setting up a Mac network for a small town newspaper over the
> >last few weekends. The network consists of a mix of Apple 6100's, 7100's
> >8100's, G3's and 3 laser printers. All boxes are running OS 8.1 or 8.5. The
> >x100's have Farallon ethermac transceivers and all boxes are connected to a
> >Farallon Starlet 16 port hub using Belden brand Cat5 bulk solid core wire.
> >
> >The problem we were running into is that when we got to plugging a machine
> >into the last port in the hub, the hub would only recognize 'stranded' cat5
> >cable (not solid core). It didn't matter which machine it was. If it was
> >going into port 15 it would only 'see' stranded cable. (Port 16 was not
> >available because the uplink port is in use.) Has anyone heard of this? The
> >cable run to the last port was not more than 30 feet. Most of the cables are
> >~50ft.
> >
> >We got the whole thing running but I am curious as to why the trouble with
> >the solid core cat5. Is it that solid core sucks?
> >
> >Any insight will be appreciated.
> >
> >--
> >Nick Scalise
> >nicks@radiks.net
> >
>
> -----------------------------------------------------------------
>
> <mailto:expresso@snip.net, Dan@Hemnet.com>
>
> ALTERNATE: <mailto:expresso@workmail.com>
>
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