trying to connect a cable modem to a wireless router

Time Warner/Road Runner is offering me a connection to the Internet
through an RCA cable modem, Model DCM425:

http://www.speedtouch.ca/pdf/dcm425_4.pdf

The thing has only two connection ports, one is a USB and the other
one for an Ethernet RJ45 cable

I need to connect the only Ethernet port from the cable modem to a TP-
LINK TL-WR642G router

After noticing some problems I thought the two routers where
conflicting, so I changed the internal IP of the TP-LINK to
192.168.2.1, but I cannot still connect to the Internet

What am I missing?

Could my ISP check that there are connections from other MAC
addresses and block them?

What should I do to fix this problem?

Thank you
lbrtchx

lbrtchx@gmail.com wrote:
> Time Warner/Road Runner is offering me a connection to the Internet
> through an RCA cable modem, Model DCM425:
>
> http://www.speedtouch.ca/pdf/dcm425_4.pdf
>
> The thing has only two connection ports, one is a USB and the other
> one for an Ethernet RJ45 cable
>
> I need to connect the only Ethernet port from the cable modem to a TP-
> LINK TL-WR642G router
>
> After noticing some problems I thought the two routers where
> conflicting, so I changed the internal IP of the TP-LINK to
> 192.168.2.1, but I cannot still connect to the Internet
>
> What am I missing?
>
> Could my ISP check that there are connections from other MAC
> addresses and block them?
>
> What should I do to fix this problem?
>

here's a photo of the connections -
http://www.simplehelp.net/images/cab...ca_dcm425a.gif
and the router -
http://www.tp-link.com/products/product_des.asp?id=3

here we go again.... - "after noticing some problems"

way don't you for once start at the beginning,
and just explain what you did,
what was originally working (if anything),
what you changed,
& what is not working now..

lbrtchx@gmail.com wrote:
> Time Warner/Road Runner is offering me a connection to the Internet
> through an RCA cable modem, Model DCM425:
>
> http://www.speedtouch.ca/pdf/dcm425_4.pdf
>
> The thing has only two connection ports, one is a USB and the other
> one for an Ethernet RJ45 cable
>
> I need to connect the only Ethernet port from the cable modem to a TP-
> LINK TL-WR642G router
>
> After noticing some problems I thought the two routers where
> conflicting, so I changed the internal IP of the TP-LINK to
> 192.168.2.1, but I cannot still connect to the Internet
>
> What am I missing?
>
> Could my ISP check that there are connections from other MAC
> addresses and block them?
>
> What should I do to fix this problem?

I also use Time-Warner with a wireless router. If you wire the modem directly
to your computer, can you connect to the Internet? If not, then Time-Warner
and/or the modem have a problem. If it works with a direct connection, you
need to do the following:

1. Connect the RJ45 port of the modem to the WAN port of the router.

2. Use a computer hard-wired to a LAN port on the router to verify that the
router uses DHCP on both LAN and WAN sides. According to the product into,
there is a Web configuration option. I don't have your model router so I
cannot help you any further on this step.

3. After any reconfiguration is step 2 is saved, power off both the modem and
the router.

4. Power on the modem and let it connect to Time-Warner. Then power on the
router. Then try your wired connection to the LAN. If the router times out in
the DHCP step, it may get an automatic IP, which is why the sequence is
important.

Larry

[ snip ]

Make sure to do a full power down recycle
of the "cable modem". many of them will
"see" the MAC (kind of like the serial
number) of whatever you've plugged into
them, and won't hook up to something new
until power cycled.


--
__________________________________________________ ___
Knowledge may be power, but communications is the key
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