RE: [mach1mach2cnc] Crossover?
You need to know what IP addresses the router (thru it's dhcp server) is
giving out. From the info you posted on the IP addresses you were
getting from the router/dhcp server they are in the 192.168.1.x network,
with 255.255.255.0 subnet mask. This network, with this subnet mask,
includes all hosts with IP addresses between 192.168.1.1 and
192.168.1.254. The dhcp typically is set up to only give out numbers
from a subset of this address range, like 192.168.1.1 thru
192.168.1.100, or something like that.
What you want to make sure of is that the IP address you have set your
PC for (the static IP address) doesn't conflict with the addresses that
the router is giving out to other PCs. You also want to make sure that
the IP address you have set the PC for doesn't conflict with the IP
address of the router itself, which according to what you posted earlier
is 192.168.1.254 (the default gateway is typically also the IP address
of the router for this type of setup). You also need to make sure that
your PC IS on the same network(so if you set it up on 192.168.100.100
like fignoggle suggested, you should change that to 192.168.1.200, or
something like that).
Finally, what IP address is the G100 set to? That should also not be in
the "dhcp server" range, or on the same address as the
router(192.168.1.254). But it DOES need to be in the 192.168.1.x network
in order to communicate with the PC, after you switch the PC to the
192.168.1.x nertwork. I am not sure how the G100 gets its IP address.
[mailto:email@example.com] On Behalf Of James Connerton
Sent: Friday, September 01, 2006 11:41 AM
Subject: RE: [mach1mach2cnc] Crossover?
It's getting clearer as you explain what is going on. It is a
DSL router, but with the fixed IP in the laptop, when I hook to the
router I can't get to the Internet. Could I have chosen an IP that
conflicts with the router, or maybe my Internet provider needs auto
config on my laptop? It would be nice to switch the G100 and the laptop
between crossover and the Hub/Switch/Router with out reconfiguring the
TCP/IP from auto to fixed IP? Thanks,
Andy Wander <awander@...> wrote:
First, some terminology:
A "host" is something that uses an IP address(Computer, G100, etc).
What is needed to have an IP address "auto-assigned" to your
"host"(computer) is a dhcp server.(dhcp means dynamic host control
protocol, and refers to how the IP address is assigned to the host by
A switch (or a hub) is a box that lets you connect a number of hosts
together electrically. Any of these hosts that are on the same
network(determined by their IP addresses and subnet masks) will be able
to communicate with each other.
A "router", technically, is a box that lets you connect 2 different IP
networks together, and allows hosts on one network to communicate with
hosts on the other network.
I suspect that you were using a "cable or DSL router", which is a kind
of an all-in-one box that combines a dhcp server(used to assign IP
addresses to the hosts that plug into it), a switch(used to allow you to
plug more than one host into the "LAN" side) and a router(used to allow
communication between your in-house network(the LAN) and the outside
If so, you were only using the switch and the dhcp server parts of that
box(unless it was also connected to a DSL or Cable Modem thru it's LAN
Now, if you do choose to plug the computer and the G100 back into the
"router", you should be able to leave the PC setup with the static IP
address. This means you would only be using the "switch" portion of the
Andy Wander |
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- Hi Dave /Andy,
You guys are going to make me an Ethernet expert! Great advise, explanations and support, I was scared to fool with any of this just a day ago but you guys held my hand and encouraged me. So I was able to set a new higher number IP for the laptop, with the DHCP, Default Gateway, and DNS stuff, now I can throw on the crossover cable and hook up, or put the router cable on and get Internet for downloads, the Grex is happy, the laptop is happy, and I have a big smile on my face. Thanks for all your help, sincerely,
figNoggle <david@...> wrote:
hi again james - maybe this analogy will help some (this may provide
some background to andy's reply):
-you live in a private, gated community called "192.168.1"
-your home address (laptop) is "3"
-your "dsl router" is the guy at the front gate to the community and has
its own address of "254" (the gateway)
-since you all live in your own respective houses, the g100 has its own
unique address of, i'm guessing "2" (or any other number between the range
of 1 and 255 but not 3 and 254 and probably not 1)
-if you want your mail delivered and want to read the daily news, you
have to contact your post office, which in this case is the dns server
"254" (the guy at the gate also happens to moonlight as the postal worker
but this is not always the case)
-now, in your neighborhood, the guy at the gate, who happens to also be
the postal worker, also runs the sales office that assigns you the
address of your home (the dhcp server)
-each subsequent neighbor who moves in certainly must at least check-in
with the guy at the gate and the sales office to make sure he's not only a
part of the neighborhood but assigned a unique house. if and only if he
wants to check and read mail would he want to get the help of the postal
worker (dns server)
what you've been doing with the dsl router is to let it dictate these
things. you can still be a part of the neighborhood and
"crash" it, provided you know who's who and what's what - hence the
statically assigned ip address.
hope this helps (and wasn't creating more confusion)!
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On Fri, 1 Sep 2006, figNoggle wrote:
> sorry to chime in again james, but i didn't want to send you down this
> path if you still wanted to keep ties to the router and lan..
> if you still want the laptop to be part of your
> network, then based on one of your posts in which you used "ipconfig" to
> determine the dynamically assigned ip of 192.168.1.3 (if i recall
> correctly), use that ip address as your static ip (i.e. replace the
> numbers you entered):
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