Re: Ethernet network wiring ?s
- From: Bob Harris <nospam.News.Bob@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 01 Jan 2006 01:47:47 GMT
In article <Adadnabyh5suRiveRVn-uw@xxxxxxxxxxxxx>,
Norm <NOSPAM@xxxxxxxxxxxxx> wrote:
> OP back for a followup question for Bob Harris or others.
>
> Since it was a year ago that I posted originally I've included the
> entire thread at that time. Not sure if this is proper newsgroup
> protocol but that is what I've done.
>
> My new question is at the end. Thanks.
>
>
> In article <nospam-C07240.20411707012005@xxxxxxxxxxxxxxxx>,
> Bob Harris <nospam@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> > In article <b4ydnfO-7LKkQkPcRVn-ig@xxxxxxxxxxxxx>,
> > Norm <NOSPAM@xxxxxxxxxxxxx> wrote:
> >
> > > In article <nospam-D5FA62.11301007012005@xxxxxxxxxxxxxxxx>,
> > > Bob Harris <nospam@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > >
> > > > In article <fsidnaECXKbyAUPcRVn-2g@xxxxxxxxxxxxx>,
> > > > Norm <NOSPAM@xxxxxxxxxxxxx> wrote:
> > > >
> > >
> > >
> > >
> > > > > 3. I'm not a networking expert at all. Right now I run from DSL modem
> > > > > ->router (Netgear RT314)-> 3 separate ethernet cables to 3 computers.
> > > > > What type of device do I need if I run ethernet to remote room and
> > > > > want
> > > > > to connect two computers there? Do I need to run two ethernet cables
> > > > > from the router to that room or can I have a second router or switch
> > > > > or
> > > > > whatever in that location? Hope that question is clear.
> > > >
> > > > No. You can cascade ethernet switches.
> > > >
> > > > Again, assuming you have all the cables ending in the basement with an
> > > > ethernet switch in the basement to interconnect the different active
> > > > cables, then you can get a small 4 or 5 port ethernet switch and place
> > > > that in the room. Plug the ethernet cable coming from the basement in
> > > > one of the ports, and then just plug your other computers into the
> > > > other
> > > > ports of the switch.
> > > >
> > > > > Thank you for information.
> > > >
> > > > One more thing. You only what 1 active router in your home network.
> > > > This should be connected to your DSL modem. The other side of the
> > > > router should then plug into one of the cables running to your basement
> > > > ethernet switch. The router can be in any of the rooms, or in the
> > > > basement if that is easier for you.
> > > >
> > > > If you buy other routers (for example add a WiFi access point that is
> > > > also a router), just disable the DHCP and NAT services so that you only
> > > > have one active router. It will make your life easier in the long run.
> > > >
> > > > Bob Harris
> > >
> > > OP here.
> > >
> > > Thank you very much for all that info. Very helpful.
> > >
> > > I think I understand but....
> > >
> > > One question on the part I copied above.
> > >
> > > Following your advice, if I got right, let's say I go from the DSL modem
> > > to the Router and then to a Switch in basement and from there to say 3
> > > rooms and say 2 rooms have one computer and one room has another switch
> > > with 3 computers. So the total is five (5) computers.
> > >
> > > Does the router assign addresses for all 5 computers even if I only use
> > > one of the router's ports and use the two switches to expand from that
> > > one router out port to 5 computers? And does the router keep track of
> > > the traffic for these 5 computers or is the switch(es) that does that?
> > >
> > > Hopefully I'm asking that in an understandable way.
> > >
> > > Thanks for the help and network education.
> >
> > As a DHCP server, your router will assign all 5 computers unique IP
> > addresses in either the 192.168.*.* or the 10.*.*.* ranges.
> >
> > While a very poor analogy, just think of the ethernet switches as
> > multi-outlet extension cords that you can plug additional multi-outlet
> > extension cords or power strips into. Anything attached to any of these
> > outlets can see and talk to anything plugged into any other part.
> >
> > So keeping with this lousy analogy, the router can see all the computers
> > even if there are several cascaded ethernet switches and only one cable
> > is plugged into your router.
> >
> > However, if the router is in the same room with the 3 computers and the
> > router has multiple LAN ports, feel free to just use those ports as your
> > switch in that room.
> >
> > Think of a multi-port router as having 2 parts. A router and an
> > ethernet switch (this analogy breaks down sometimes as well, but what
> > the heck). The back side is the router that talks to your WAN port (DSL
> > modem cable is plugged into this) and routes stuff to/from the front
> > side, which is your built-in ethernet switch.
> >
> > So feel free to use the router LAN side ports to attached additional
> > computers:
> >
> > DSL Modem <--> [WAN] Router [LAN ports]
> > in \ \ \ \__> basement switch
> > room 1 \ \ \ \ \ \ \__> room 2
> > \ \ \ \ \ \____> rm 3 Mac
> > \ \ \ \ \______> rm 4 PC
> > \ \ \ \________> rm 5
> > \ \ \___> Mac
> > \ \_____> PC
> > \_______> Mac
> >
> > Or if router and DSL modem are not in same room as 3 computers:
> >
> > DSL Modem <--> [WAN] Router [LAN ports]
> > in \ \ \ \__> basement switch
> > room 1 \ \ \ \__> room 2
> > \ \ \____> rm 3 Mac
> > \ \______> rm 4 PC
> > \
> > \ room 5 Switch
> > \_______/ / / /
> > / / /
> > Mac <_____/ / /
> > PC <_______/ /
> > Mac <_________/
> >
> > I hope this helps. And if you do not see a neat line drawing picture,
> > then either your news reader is not using fixed width fonts or it has
> > line wrapped it. Sorry about that :-)
> >
> > Bob Harris
>
>
> OP back after 12 months. ;)
>
> Bob: As I said before your response to this (and other posts) was very
> helpful.
>
> I have a couple of follow-up questions on the above both to make sure
> the planned network is designed correctly and for my own education on
> networks and router, switches and hubs......
>
> One question is: what is the difference between a switch and a hub? I
> find I that I have a hub in my office that I used at some point in the
> distant past (a Netgear EN104TP). It may be speed limited but didn't
> know if I could use it for this application.
A switch is an active device. It will forward messages only to
the ports that have the ethernet address the message is intended
to. A switch can also speed match between 10 and 100baseT
devices. And if you have a gigabit switch it can speed match
between 10, 100, and 1000baseT devices.
A hub only deals with devices of the same speed. All messages are
sent to all attached devices.
In general switches give you more flexibility and if you look shop
around (http://dealmac.com), they are not that expensive. But
unless you are saturating your network, or you need to mix
different speed devices, a 4 port hub can work OK.
> Second question is whether my planned network setup makes sense.
>
> Here is our current network:
>
> DSL Modem -> WAN Router (Netgear 314)
>
> WAN Router -> Mac and
> WAN Router -> Airport Extreme Base Station (with one or two Macs
> connected wirelessly)
Side note: Since you already have a router, disable the Airport
Extreme base station -> Network tab -> "Distribute IP addresses".
uncheck the "Distribute IP addresses". When you do this, the
"fine print" at the bottom of the configuration panel will say the
base station is acting as a bridge.
You want to do this, because you do not want 2 routers on your
home network, and you do not want 2 DHCP servers.
One of the negatives of the side effects of a 2nd router would be
that Bonjour (aka Rendezvous, aka zeroconf) will not cross a
router. Bonjour is used by Macs to share printers and other local
network devices. By disabling "Distribute IP addresses" the WiFi
attached Macs will be on the same local network as your ethernet
connected Macs.
> Now I'd like to add ethernet in several rooms of house in a manner you
> were describing above in your post a year ago.
>
> So, can I gather I run ethernet from the WAN Router to a Switch (or
> Hub?) in the basement?
Yes.
Or now that you have an Airport Extreme base station, it might
(and I stress the might) be possible to get a compatible WDS
device (Wireless Distribution System) and extend your network
without running ethernet cables. Something like an Airport
Express. BUT this is more expensive than just running an ethernet
cable.
> And then from that Switch, or Hub, run ethernet to each room where I
> want ethernet connections?
Yes.
> Then my new network would be:
>
> DSL Modem -> WAN Router (Netgear 314)
>
> WAN Router -> Mac and
> WAN Router -> Airport Extreme Base Station (with one or two Macs
> connected wirelessly) and
> WAN Router -> Switch
> Switch -> remote Macs or other switches to remote Macs
>
>
> As always, appreciate your tips.
>
> Thanks,
>
> Norm
What your doing should work very well. I would uses switches if
that is not a problem, and if you are going to use a hub, then put
that at the end.
If there is just one device at the end of a long run, then you can
just plug the Mac (or PC) into it. Only add a switch/hub if there
is more than one device.
Bob Harris
.
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