27 Oct
1999
27 Oct
'99
8:46 a.m.
Does anyone know of any sources of info on the net
anywhere on running a
network between various rooms in a house?
As an authoratitive reference on the subject, I *highly* recommend
the Three Stooges' _A Plumbing We Will Go_.
Shortly after moving to Canada I was very confused when my electric
bill was called the "Hydro bill", but Larry, Moe, and Curly cleared
this all up for me.
Tim.
27 Oct
27 Oct
9:06 a.m.
Does anyone
know of any sources of info on the net anywhere on running a
network between various rooms in a house?
As an authoratitive reference on the subject, I *highly* recommend
the Three Stooges' _A Plumbing We Will Go_. 
9:27 a.m.
At 11:06 AM 10/27/99 -0700, Zane wrote:
I'm thinking more on something that recommends how
to do the cable
connections and such. Plus I honestly have no clue what max cable length
requirements are and how hubs and such effect that. I'm looking for
something for non-Networking Guru's.
The good news is that cable wiring is optimized for monkeys so people with
brains can do it, provided they avoid the temptation to think about what
they are doing.
There is no distance in a "normal" residential house that will exceed the
CAT5 cable limit. (1km?)
The CAT5 cable has its pairs color coded. The jacks are color coded. The
termination plugs are color coded. Match the colors and win! :-)
I did this for my house (on going project) and chose one of the two
standards for all 8 conductors in the documentation, I taped that to the
phone closet "board". (a piece of plywood attached to the wall)
The biggest hassle is pulling the cable. Second biggest is getting power to
the place where everything terminates.
--Chuck
9:38 a.m.
Chuck McManis wrote:
The good news is that cable wiring is optimized for
monkeys so people with
brains can do it, provided they avoid the temptation to think about what
they are doing.
This is correct. Under no circumstances should you stop and consider the
mind-numbing nature of what you're doing, otherwise you'll start looking
for more rewarding projects, like getting your teeth cleaned.
There is no distance in a "normal"
residential house that will exceed the
CAT5 cable limit. (1km?)
For 100baseTX is far less than that; for some reason the figure of 100 meters
and change sticks in my head but I'd have to check. Even so, 100 meters
is more than enough for any house that I'm familiar with.
The CAT5 cable has its pairs color coded. The jacks
are color coded. The
termination plugs are color coded. Match the colors and win! :-)
Er, with one exception, the terminations are available in USOC, T568A and
T568B; the match-the-colors game only works with the T568B color scheme.
The biggest hassle is pulling the cable. Second
biggest is getting power to
the place where everything terminates.
Amen, brother.
Best,
Chris
--
Chris Kennedy
chris(a)mainecoon.com
http://www.mainecoon.com
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
9:25 a.m.
New subject: Semi-OT: Running CAT5 Cables (Stupid Question)
OK, I was pointed at http://www.linksys.com looks like they've got some
good info. However, I just noticed something that has me wondering, looks
like CAT5 only has 4 real wires made out of the 8 wires.
So... Is it possible to run at least 10BaseT over normal phoneline cable?
It just happens that a totally unused phoneline was run a couple years ago
at the same time I had a work phone put in.
Yes, I want to be lazy if possible. I'm assuming that if it is possible I
can make a RJ11-to-RJ45 adapter and plug one end into a hub in the house,
the other end into a hub in the garage.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
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9:32 a.m.
New subject: Semi-OT: Running CAT5 Cables (Stupid Question)
"Zane H. Healy" wrote:
OK, I was pointed at http://www.linksys.com looks like they've got some
good info. However, I just noticed something that has me wondering, looks
like CAT5 only has 4 real wires made out of the 8 wires.
That's correct.
So... Is it possible to run at least 10BaseT over
normal phoneline cable?
In theory it needs to be cat3 or better. Silver satin (i.e., regular
modular phone cabling) generally won't cut it due to crosstalk and
environmental noise problems.
Yes, I want to be lazy if possible. I'm assuming
that if it is possible I
can make a RJ11-to-RJ45 adapter and plug one end into a hub in the house,
the other end into a hub in the garage.
As long as you have two idle pairs and the stuff is twisted it should be
okay over short distances. In the end you may decided that it's easier
to do the job well the first time rather than live with problems everytime
the dishwasher fires up or you turn on the lights in the garage...
Best,
Chris
--
Chris Kennedy
chris(a)mainecoon.com
http://www.mainecoon.com
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
12:44 p.m.
New subject: Semi-OT: Running CAT5 Cables (Stupid Question)
OK, I was pointed at http://www.linksys.com looks like
they've got some
good info. However, I just noticed something that has me wondering, looks
like CAT5 only has 4 real wires made out of the 8 wires.
"Normal" CAT5 cable has four metallic pairs. 10-Base-T and 100-Base-TX
use only two of the pairs. (And not the two that you might expect.)
Other physical layers (including 1000-base-Tsomething) will use four pairs.
I generally recommend against trying to be cheap by putting in the minimal
required number of pairs.
So... Is it possible to run at least 10BaseT over
normal phoneline cable?
It just happens that a totally unused phoneline was run a couple years ago
at the same time I had a work phone put in.
I've successfully run 10-base-T on two spare pairs of prewire in my condo,
which probably doesn't even meet Category 2 specs.
The phone wiring for the whole place is a daisy chain, except for one branch
to the kitchen. The normal 10-base-T rule of thumb is that no two nodes on
the same network should be separated by more than four repeaters. (An
Ethernet hub is a multiport repeater.) Beyond that you're supposed to use
bridges or routers. (An Ethernet switch is really a bridge.)
This limit is required for several reasons, the most obvious of which is
the effect of propogation delay on collision detection.
However, I've gotten away with five hubs separation between some of my
nodes. I haven't seen any reliability problems. I suspect that I'm within
the timing requirements because my cable segments are much shorter than
the specified maximum.
What you *can't* get away with, though, is running 10-base-T over
flat "modular" cable. It really does have to be twisted pair.
Also, note that the limits for 100-base-TX are much more stringent. You
can't have more than two repeaters between nodes. Fortunately small
10/100 switches are getting cheap.
Eric
9031
days inactive
9031
days old
6 comments
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participants (5)
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chris＠mainecoon.com -
CLASSICCMP＠trailing-edge.com -
cmcmanis＠mcmanis.com -
eric＠brouhaha.com -
healyzh＠aracnet.com