Hi All
I'm in a temporary accommodation situation at the moment and trying
to sort myself out wireless Internet access for my laptop. I have a
Netgear Wireless router (DG834G) and just enough knowledge to be
dangerous...

The house has NTL broadband and the cable modem is an NTL Home 120,
with USB connection to the PC and a spare Ethernet port. So, Oh Ho,
says I ... If I connect one of the ports on my router to this port,
turn off the ADSL on the DG834 (turning it into an Access point, IIUC),
and configure things ... correctly ... I should be laughing.

Netgear have a couple of app. notes on theri wesite which mention this
sort of thing, using other routers, and indicate that it should be
possible. What I'm not clear about is how to determine the IP address
of the Ethernet on the Cable Modem. My DG834 is telling me that the
only connected device is the wired PC I'm using to configure it, even
though the LEDs on the front show both Ethernet ports have activity.

Also, what would I have to set the DNS addresses to - NTLs, or Force9s,
which is my ISP?

A pointer to any step-by-step guide to this sort of thing would be
appreciated, together with any tips...

Thanks Muchly
j^n

On 11 Dec 2005 13:02:31 -0800, in uk.telecom.broadband , "jkn"
<jkn_gg@nicorp.f9.co.uk> wrote:

.... which I assume you have permission to access.

Nope.

Only one of the two ports on the CM is active at once - either USB or
ethernet. For you to connect both PCs ,you'll have to remove the USB
cable, reboot the cable modem, connect the router to the modem and
reboot the router, then finally connect both PCs to your router via
ethernet (or wireless), and reboot them.

You don't need to. Put everything in DHCP mode (ie "get IP address
automatically") and presto! it'll work.

Same answer. Just leave it alone and it'll sort itself out.

http://homepage.ntlworld.com/robin.d.h.walker/

Hi Mark
Thanks for your very useful reply...

Mark McIntyre wrote:
absolutely. I'm making a wired connection with my landlady's permission

[much useful stuff snipped]

OK, thanks. I'm still surprised that my router is indicating activity
on the Cable Modem's Ethernet port, when you say that only either USB
or Ethernet is active at any time. Still, I have prepared myself with a
cheap PCI Ethernet card as well, so I can connect her PC to the router
as well.

Thanks for the link also

Cheers
Jon N

On 12 Dec 2005 01:07:24 -0800, in uk.telecom.broadband , "jkn"
<jkn_gg@nicorp.f9.co.uk> wrote:

I've no idea what activity its detecting, but its bogus. Only one of
the two can be active at a time, without rebooting the modem.

"Mark McIntyre" <markmcintyre@spamcop.net> wrote in message
news:ce0sp1ppct3t4nj775mbmb18rsi45ec4nn@4ax.com...
As the OP has not stated what cable modem he has I don't know how anyone can
jump to that conclusion.
Some cable modems can use both ports IIRC (scientific Atlanta do one, for
instance).

Hi Dennis
err, my original post stated that the CM was an NTL home:120. Does that
help?

I did a bit more work on this last night, rewiring as per Matt's
posting. I still can't talk to the CM via the ethernet card on the PC.
I will try to post a few more details later today after I've read a
little more. FWIW this Netgear app note:

http://kbserver.netgear.com/kb_web_files/n101236.asp
and maybe this one:
http://kbserver.netgear.com/kb_web_files/N101496.asp

are the sort of thing I have. Looking at the diagram on the first app
note, a wired PC currently takes the place of the 'wireless PC' [tho'
I'll also be using my laptop wirelessly later], the blue router is my
DG834G, and the 'other router' is the cable modem in my case. Looking
at what Matt was saying I think I'm having trouble setting up the
default gateway part on the wired PC.

Jon N

dennis@home wrote:
Yes but if you only get one allocated IP adress (as you normally are on
NTL), you can only use one port at any one time...

In article <439f0520$0$1454$ed2619ec@ptn-nntp-reader01.plus.net>,
kraftee@kraftee.plus.nospamming says...
interesting.
--
Mugwump

Reply to 'usenetmail{at}discworld{dot}org{dot}uk

OK Chaps, an update...

I did a bit of reading and checked some of the information taken from
the PC when successfully talking directly to the CM via the USB port:

IP address: 82.30.xx.107 # via DHCP
Subnet Mask: 255.255.255.0
Default Gateway: 82.30.xx.254

So I then set up my Ethernet card manually (to begin with) with an IP
address of 82.30.xx.2, my DG834G router to 82.30.xx.99, and disabled
the USB connection. I then wired the router to the CM's Ethernet port &
rebooted the CM (ntl home:120, you may remember). So I have:

PC
|
|
DG834G port 1
DG834G port 2
|
|
NTL home:120

AFAICT these are all on the same subnet, unless I'm misunderstanding
something. The 'eth' LED on the CM was flashing mostly on.

Now, I can talk to the DG834G, but it reports that the only attached
device is my PC, and an attempt from the diagnostics screen on the
router to ping the CM fails.

Am I misunderstanding the IP address of the CM, or doing something else
wrong?

Thanks
Jon N

jkn wrote:
Well it has been pointed out to you on several occaisions that you
haven't got the correct kit.

If you didn't listen then so why are you going to now?

Hi there

Kraftee wrote:
[...]

err, where was this said? It was pointed out to me that the ntl CM
would only work on one port at a time - Either Ethernet OR USB. Which
is why I'm trying what Mark suggested in his reply to me - his
suggested configuration only involves wiring up to the CM Ethernet
port.

Oh, people change, you know... ;-). If I've misunderstood what's been
written then I'm happy to learn of it.

J^n

On Tue, 13 Dec 2005 01:30:29 -0800, jkn wrote:

You need a wired broadband router from your modem to the wireless router.
You need to disable NAT, DHCP and put the wireless router in the same
subnet as the wired router. In your case, your cable modem will not
replace the 'other router'. If I were you, I'll not spend more of my time
trying to get it to work .. It just wouldn't work .. had a go myself.

Hi there

Wira One wrote:

[...]

Thanks for the information ... can you help me understand what (in this
case) the wired [does it have to be broadband?] router is doing in this
arrangement? If I can't get this to work at least I'd like to
understand more.

Cheers
Jon N

Wira One wrote:
??????

All he requires is a wireless ethernet router, they are out there, or
possibly a non wireless ethernet router & a wifi access point..

Please note at no time have I stated a ADSL router...

On 15 Dec 2005 13:17:56 -0800, in uk.telecom.broadband , "jkn"
<jkn_gg@nicorp.f9.co.uk> wrote:

I kinda assumed you'd read a) the router instruction manual and b) the
NTL instruction manual.

The modem has to plug into the WAN port of the router. The PC into one
of hte LAN ports. Put your PC in "DHCP" or "automatic address" mode,
and turn everything on.

As I said above, I did assume you understood that the router has a WAN
port for the modem. and some LAN ports for everything else.

On 15 Dec 2005 12:43:12 -0800, in uk.telecom.broadband , "jkn"
<jkn_gg@nicorp.f9.co.uk> wrote:

Lets get this straight:
you want to connect an ntl cable modem to a wireless router , so you
can use the router to wirelessly connect to ntl.

You have the wrong kit. You need to buy sopmething additional.

Here's how to get it working

1) but a CABLE READY broadband router.

2) plug the eth port of the modem to the WAN eth port of the router.

3) Plug one of the LAN ports of the router to your wireless router -
nb NOT the wan port of the wireless, just one of the ordinary ports.

4) cable your PC to one of the spare ports on the wireless router.
Ensure the PC is in DHCP / auto config mode. Go into the config
screens of the wireless unit, and disable all DHCP server stuff. Also
set the wireless routers' IP to be in the range served by the new
router - typically 192.168.x.x, read the documentation.

5) power off everything, then restart beginning with the modem and
working towards the wireless unit.

6) When, and only when, your PC is working in wired mode, try fooling
with wireless.


You're misunderstanding how routers work, amongst other things.

On Thu, 15 Dec 2005 13:31:36 -0800, jkn wrote:

I guess you should understand how router works by now. The wired
broadband router is there since your ADSL wireless router couldn't route
any traffics through to the cable modem (and to the net). By following the
instructions from your previous posted link, the wired broadband router
will do the traffics routing from your LAN/WLAN to the cable modem.

Hi Mark
Actually, no. I appreciate that I was using the DG834G in a
'non-approved' manner, one not covered in the manual AFAIK. And I don't
have access to the NTL manual. I did say I had just enough knowledge to
be dangerous...

OK. I think what I have been misunderstanding, or at least hoping to be
different, was the action of the 'routing' part of the DG834 (ie
between the 'WAN' ADSL port and the 4 Ethernet ports), and the
non-routing switch (or is it just a hub?) between the 4 ethernet ports
themselves.

Like I think I said, this is a temporary lashup type arrangement, so
even if I can't do it I've learned something. I may be able to borrow a
small router, let's see...

Thanks for the info
Jo N