[X4U] Attaching A Router To Router

[Richard Gilmore]

What I would use is an Ethernet Hub. Netgear makes some good ones. That's
what we use. It's a little different from a router in that it doesn't assign
any IP addresses but redistributes them from the router upstream. Routers
can distribute hundreds of IP numbers but typically only have 4 ports on
them a hub allows for more distribution of those numbers without creating
any of its own. I think they're a little cheaper than a router too and they
require zero setup just plug and play.


> From: Allan Hise <allan at hise.org>
> Reply-To: "A place to discuss Mac OS X for the casual user."
> <x4u at listserver.themacintoshguy.com>
> Date: Mon, 14 Feb 2005 00:53:38 -0800 (PST)
> To: "A place to discuss Mac OS X for the casual user."
> <x4u at listserver.themacintoshguy.com>
> Subject: Re: [X4U] Attaching A Router To Router
> 
> 
> 
> On Sun, 13 Feb 2005, revDAVE wrote:
> 
>> A friend of mine has 2 macs in his office -  and wanted to purchase a router
>> so that they could both be on the Internet and doing some file sharing. ( I
>> guess currently only one computer is on the Net -  the other is just a non
>> Internet Business Computer right now.)
>> 
>> I  suggested that his company might already be on a Bigger master router
>> system ( there are about 30 employees) -  and he thought that most likely
>> there was some previous system set up and that he was already receiving 1
>> Ethernet cable that was probably on that system already - he wasn't sure -
>> but that is my guess. However, he still wants to purchase a router to set up
>> these computers in his room.
>> 
>> So I am asking - is it possible to purchase a router and set up on top of
>> another ( bigger) router. Let's assume that the large office gets 1 T1 line
>> coming and - and goes to a master router - and one Ethernet cable goes into
>> his office.  Can I then attach his private router to the end of that cable
>> and set up a " sub system " for his 2 computers?
> 
> Yes, this is possible. I would try just using a switch (or, less
> desirably, a hub) first, especially if the network uses DHCP (and the IT
> guys allow the 2nd MAC address on the network). That would make things
> much simpler, and cheaper.
> 
> Otherwise, just setup the router to use NAT and the 1st router will see
> the two machines as having the same IP address. Of course, this is easier
> said than done and implementation depends on the router. And depending on
> how the network is set up, you may end up with NAT upon NAT... (it works,
> but can be ugly).
> 
> So, there are a lot of variables. Seriously, see if you can go the
> switch/hub route first. Is there some reason he can't ask the IT folks in
> his large office?
> 
> Allan
> 
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