No Internet Connection Between Router and Modem

Hello,

No Internet Dilemma!

Ive been trying to help my friend out for the last couple of nights
with his new home networking setup.
All he wants is to connect to the internet via his laptop over
wireless while having his home desktop PC hooked up to the cable
modem.

So we have the basic bog standard setup (or so id think)

Internet --- MOTOROLA SB4200 SURFboard cable modem --- AzureWave 54g
Wireless 4-Port Cable Router
http://www.maplin.co.uk/Module.aspx?...OUTER&doy=21m8

So After hours of troubleshooting at getting idiotic due to Windows
Vistas unreliability we finally reolised that the router wasnt picking
up an internet connection from it cable modem.

Im all out of ideas now and thought id try my luck with this forums...

Hope to hear from you all soon

Thanks, Dan

danisgod@gmail.com hath wroth:

>No Internet Dilemma!
>
>Ive been trying to help my friend out for the last couple of nights
>with his new home networking setup.
>All he wants is to connect to the internet via his laptop over
>wireless while having his home desktop PC hooked up to the cable
>modem.
>
>So we have the basic bog standard setup (or so id think)
>
>Internet --- MOTOROLA SB4200 SURFboard cable modem --- AzureWave 54g
>Wireless 4-Port Cable Router
>http://www.maplin.co.uk/Module.aspx?...OUTER&doy=21m8
>
>So After hours of troubleshooting at getting idiotic due to Windows
>Vistas unreliability we finally reolised that the router wasnt picking
>up an internet connection from it cable modem.

The router does not "pickup" anything from the cable modem. The modem
is a bridge and is transparent to IP addresses. The modem get it's
information from the CMTS (cable modem terminal system), which will
deliver all kinds of nifty things to the cable modem including an IP
address for the router.

You can also connect to the SB4200 at 192.168.100.1 and check the
status page. Got a connection?

Can Vista connect to the router and look at the status page? If so,
does it have a routeable IP address from your cable ISP? If not,
check the WAN settings in the router. You may also have to "clone"
the MAC address of the workstation in order to authenticate.

>Im all out of ideas now and thought id try my luck with this forums...
>Hope to hear from you all soon
>Thanks, Dan

The usual problem is that Vista has changed the way DHCP works. See:
<http://support.microsoft.com/kb/928233>
This is only a problem if your Vista machine cannot connect to your
router and see the web based config. I believe there is also a
firmware update on the Motorola web pile to fix this, but I'm too lazy
to check.

When you get that fixed, this may also bite you:
<http://support.microsoft.com/kb/933872>


--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Aug 22, 2:18 am, Jeff Liebermann <je...@cruzio.com> wrote:
> danis...@gmail.com hath wroth:
>
>
>
> >No Internet Dilemma!
>
> >Ive been trying to help my friend out for the last couple of nights
> >with his new home networking setup.
> >All he wants is to connect to the internet via his laptop over
> >wireless while having his home desktop PC hooked up to the cable
> >modem.
>
> >So we have the basic bog standard setup (or so id think)
>
> >Internet --- MOTOROLA SB4200 SURFboard cable modem --- AzureWave 54g
> >Wireless 4-Port Cable Router
> >http://www.maplin.co.uk/Module.aspx?...aplin&U=Search...
>
> >So After hours of troubleshooting at getting idiotic due to Windows
> >Vistas unreliability we finally reolised that the router wasnt picking
> >up an internet connection from it cable modem.
>
> The router does not "pickup" anything from the cable modem. The modem
> is a bridge and is transparent to IP addresses. The modem get it's
> information from the CMTS (cable modem terminal system), which will
> deliver all kinds of nifty things to the cable modem including an IP
> address for the router.
>
> You can also connect to the SB4200 at 192.168.100.1 and check the
> status page. Got a connection?
>
> Can Vista connect to the router and look at the status page? If so,
> does it have a routeable IP address from your cable ISP? If not,
> check the WAN settings in the router. You may also have to "clone"
> the MAC address of the workstation in order to authenticate.
>
> >Im all out of ideas now and thought id try my luck with this forums...
> >Hope to hear from you all soon
> >Thanks, Dan
>
> The usual problem is that Vista has changed the way DHCP works. See:
> <http://support.microsoft.com/kb/928233>
> This is only a problem if your Vista machine cannot connect to your
> router and see the web based config. I believe there is also a
> firmware update on the Motorola web pile to fix this, but I'm too lazy
> to check.
>
> When you get that fixed, this may also bite you:
> <http://support.microsoft.com/kb/933872>
>
> --
> Jeff Liebermann je...@cruzio.com
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558

Thanks for your response, Ill keep you up to date on what happens on
my 2nd attempts.

The Cable Internet provider that he is with is Virgin Media.

I have considered a number of things since last night on what the
matter could be

1. Virgin Cable might have it so you can only connect to the internet
via only your MAC address.
2. MAC Cloning might also be an option, yet didnt succesfully work
when I tried lastnight

After that im all out of ideas

danisgod@gmail.com hath wroth:

>The Cable Internet provider that he is with is Virgin Media.
>
>I have considered a number of things since last night on what the
>matter could be
>
>1. Virgin Cable might have it so you can only connect to the internet
>via only your MAC address.
>2. MAC Cloning might also be an option, yet didnt succesfully work
>when I tried lastnight

I don't think so. I did some quick Googling and digging on the
Virgin Media web pile:
<http://www.virginmedia.com/>
and could find no references to authenticating the clients MAC
address. They do authenticate the cable modem's MAC address, but
that's not changing here.

>After that im all out of ideas

I still don't have a clear description of what's failing to function.
All I know is that you mentioned:
>> So After hours of troubleshooting at getting idiotic due to Windows
>> Vistas unreliability we finally reolised that the router wasnt picking
>> up an internet connection from it cable modem.
which is rather vague.

Some questions to ask your friend (or yourself):
1. Is the cable modem connecting? Plug a computer directly into the
SB4200. Set it up for an IP address of 192.168.100.25. Point the
browser to http://192.168.100.1 and check the status page.
2. Does the router pickup an IP address? Put the computer back to
normal DHCP assigned IP's and run a CAT5 cable to one of the LAN ports
on the router. Can you connect to the web configuration thing inside
the router? If not, see the Vista DHCP problems I previously
mentioned.
If yes, what does the router status page show? You should have a
routeable IP address, gateway, netmask, and DNS servers from Virgin
Media.
3. If you have the previous items working, then you should be able to
browse the internet. Can you?
4. Once you can browse the internet, setup the wireless and get it
working. Don't bother with wireless unless you're on the internet.


--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

danisgod@gmail.com wrote:
> Hello,
>
> No Internet Dilemma!
>
> Ive been trying to help my friend out for the last couple of nights
> with his new home networking setup.
> All he wants is to connect to the internet via his laptop over
> wireless while having his home desktop PC hooked up to the cable
> modem.
>
> So we have the basic bog standard setup (or so id think)
>
> Internet --- MOTOROLA SB4200 SURFboard cable modem --- AzureWave 54g
> Wireless 4-Port Cable Router
> http://www.maplin.co.uk/Module.aspx?...OUTER&doy=21m8
>
> So After hours of troubleshooting at getting idiotic due to Windows
> Vistas unreliability we finally reolised that the router wasnt picking
> up an internet connection from it cable modem.
>
> Im all out of ideas now and thought id try my luck with this forums...
>
> Hope to hear from you all soon
>
> Thanks, Dan

Silly idea, but you'd be surprised how many people are impatient and won't
do it...
Turn EVERYTHING off.
Turn on the cable modem
wait a minute or so and THEN turn on the wap/router
wait a few more minutes and THEN turn on the PC(s).....

Hey, it's free, and probably solves 90% of the problems you describe.....
Unfortunately, that also happens after the power gliches/goes off, and
things all usually turn on at the same time.. So if it starts working, the
same problem will happen again if the power fails...