Question about Cisco 675 Router

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Router cannot get IP with cisco 675 modem

I have a d-link di-524 wireless router that i am trying to install so i can have wireless internet in my house. currently my pc (winXP SP2) is connected to the internet thru a cisco 675 dsl modem. my isp uses dynamic IP and auto DNS. when i connect the pc to the router and the router to the modem, i can get to the web configuration for the router but i can't access the internet. in the status tab for the router under WAN it shows that my IP address is when i try to renew DHCP it times out.

DHCP server in the cisco 675 is enabled. i am looking at CBOS thru hyperterminal but i don't know what to do. i have tried cloning my pc's host name and MAC address but the router still cannot get an IP. i don't really understand this stuff, it's too much for me... help!

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  • thomasjw76 Feb 01, 2008

    you had it right, brilliant. Once I found the commands for the Cisco so I could disable its dhcp your suggestion worked perfectly. all is now up and running as expected.

    many thanks!

  • Anonymous Mar 15, 2014

    unable to access the web site to update this router



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Do you know if your computer is using TCP/IP or PPPoE when connecting to the DSL modem? Check the Local Area Network settings on your PC ...if the PPPoE protocol is present, then it may be necessary to use PPPoE when connecting the wireless router to the dsl modem.

PPPoE = Point-to-Point-Protocol-over-Ethernet.

PPPoE configuration usually requires a username and password that has been provided by your ISP. Depending on the firmware version, your D-Link wireless router should automatically detect a PPPoE connection and prompt you for the username password. If it doesn't, you can set it manually through the web configuration screens.
Good luck...and I hope this is helpful!!

Posted on Feb 01, 2008

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The issue may be due to the existence of two (2) DHCP servers; 1 in the Cisco 675 and the 2nd in the DLink DI-524. You need to disable the Cisco's DHCP server function and assign static IP add & config to the DLink WAN config. This way it will only be the DLink handing out IP adds to the network.

The workaround. Install your original configuration/setting without the DLink DI-524 - PC direct to the Cisco 675 (I am assuming through Ethernet ports). Verify that indeed you are connected to the Internet and can surf the net, check e-mails, etc. Check your Networking Connection Status. Log down your PC's IP Add, Subnet Mask, Default Gateway, DNS. For purposes of discussion, let's call this "N1".

After your Internet connection has been verified with your PC directly connected to the Cisco, remove the direct connection and connect the DLink DI-524 in between the Cisco router and your PC.

Log in to the DLink and modify WAN parameters using the "N1" configurations/settings.

It might be of help to disable any security (WEP WPA, MAC etc) at least while configuring.

Hope this be of help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Posted on Feb 01, 2008

  • Louie  Role
    Louie Role Feb 01, 2008

    Hi again,

    Missed mentioning, you may need to refresh/repair Network settings of all PCs to use the DHCP server of the DLink.

  • Louie  Role
    Louie Role Feb 01, 2008

    Hi again,

    Glad to be of assistance and appreciate the rating.



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