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Thread: trying to connect a cable modem to a wireless router

  1. #1
    lbrtchx@gmail.com
    Guest

    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

  2. #2
    ps56k
    Guest

    Re: DCM425 cable modem to a wireless router

    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..




  3. #3
    Larry Finger
    Guest

    Re: trying to connect a cable modem to a wireless router

    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

  4. #4
    danny burstein
    Guest

    Re: trying to connect a cable modem to a wireless router

    [ 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
    dannyb@panix.com
    [to foil spammers, my address has been double rot-13 encoded]

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