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Internet connection fails very frequently!

I use a Wired Router D-link Dir 100. There are 4 of us sharing a single cable internet connection. The router is connected to the cable modem and all other 4 computers are connected to the router. The past week the internet connection used to fail a couple of times a day. To establish a connection again I restarted the modem, and then most of the time the internet connection would come back.
I tried calling my ISP and they told me that the modem is fine. I checked the router and noted that when the internet connection, and I try to renew and release the DHCP no IP addresses appear and the router says that "DHCP client is not connected". After I restart the modem the problem is fixed. Last time I tried restarting the router and that fixed the problem.
I set my router on Dynamic DHCP. I tried setting up a static DHCP and that did not work for me ( maybe I did not know how to set it up properly),

I am looking forward to your reply,

Thank you for taking the time to read this letter

my email is

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  • ninja001 Jan 04, 2008

    I am in the Republic of Macedonia, so I am not sure if you are familiar with my ISP. (The ISP is TeleKabel, if this means anything to you).
    Anyways, I am not sure whether I am supposed to have a dynamic DHCP or static DHCP set up.
    The way I have tried to set up static DHCP is by logging on to the router ( Then I clicked on the "Setup" tab. Then the screen changed a bit and it displayed
    Internet connection wizardI clicked "Setup Wizard", then I kept clicking next, next.... until I came to select one of the following options.

    prints(m_title_dhcp);DHCP Connection (Dynamic IP Address)

    prints(m_title_pppoe);Username / Password Connection (PPPoE)

    prints(m_title_pptp);Username / Password Connection (PPTP)
    Username / Password Connection (L2TP)

    prints(m_title_bigpond);Username / Password Connection (Bigpond)
    Static IP Address Connection

    I selected static IP address configuration. All the ip address were preset so I just clicked next and waited for 20 seconds until the router rebooted. After this there was no internet connection.

    My question now is how should I resolve the problem? Should I reinstall my internet connection using the CD that I have received from my ISP?

    Thank you for taking the time to reply to my request,


  • ninja001 Jan 05, 2008

    Thank you very much for the feedback. I think that I should be able to solve the problem. So far I have not had any problems.....

    Thanks again.



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  • 25 Answers

I will try to see if I can Be of some help...But first I need to know who your ISP is. Also I note that you indicated that you try to renew and release you do not show DHCP connected. You should be doing release and then renew, I believe that's what you meant to say? Also please describe to me how you attempted to set up static IP.
Awaiting your info...!

Posted on Jan 04, 2008

  • Mort Lebow
    Mort Lebow Jan 05, 2008

    Based on this information, I believe you should be setup with a Dynamic IP Address, which is what the majority of the Cable Companies use. Which means that when you log onto you ISP you are handed an address which might be something like, which is your WAN address. That IP address remains with you until your ISP changes it or you perform a release and renew, at which time you are handed a new address.

    You will note there should be a function in your router setup for your router to act as a DHCP Server for your LAN and here you can indicate what range of IP addresses will be handed out to your LAN notes (meaning the 4 workstations connected to your router ports). If your router address is, then your LAN IP address will be of this configuration, always as 192.168.0.???. So, you can set your DHCP LAN range from to or whatever range you might choose. Which means when your workstations logon they would recieve addresses within this range. The range of addresses below this thru could be used for static IP address within your LAN, which would require a slightly different setting for the TCP/IP and we will discuss that later. However, you should go into the network adapter control panel on each of the workstations and in the TCP/IP settings configure both IP and DNS addresses for dynamic, then click the advanced button and set the Gateway address to, which is the address of the router. This will direct the workstations to the router which will be acting as a gateway to the network. So, the WAN address is your Wide Area Network address which how the internet finds your modem and your modem should be pointing to your router (, which defines your LAN. The last number in the LAN address indicates the node and so the router communicates with the workstations through this gateway.

    Once your have accomplished this and successfully connected to the internet. You should look at the status screen in your router and make note of your WAN address, and the DNS addresses provided by your ISP connection.

    Then if you wanted to setup your LAN as static IP addresses, meaning your workstations woulld always have the same addresses, you would do the following. In the Network Adapter Control Panel. Go to TCP/IP applet and set for Static IP at each workstation. Making the first one, the second station and so on. And on all of them set the mask to, the gateway to, the two DNS setting to whatever the DNS was indicated in the Status Screen of your router and you now would have static IPs for your LAN workstations. Static LAN IPs have distinct advantages over dynamic for security purposes, which a whole different lesson.

    Well, I hope this is clear, I tried my best to make it clear...Good Luck and let me know how your make out.

    Just as side bar, I have numerous client's with cable ISPs and they also have connectivity problems from time to time. And oddly enough they eventually seemed to clearup even though the cable techs claim that the problems are not caused by their equipment????



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