Apple AirPort cannot get IP address from cable modem using DHCP
I just switched from DSL to Time Warner cable modem service. I can connect my MacBook Pro directly to the modem and get a valid IP address just fine using DHCP. But when I connect my Apple aiport base station to the modem, I cannot get an IP address from the modem. I can talk to my base station just fine from the MacBook, the problem seems to be between the base station and the modem. I am connecting from the airport to the modem using ethernet, not PPPoE - I did not have to use PPPoE to connect my MacBook to the modem, so I assumed I didn't need it to connect from the airport to the modem. I already called Time Warner about this and they can see my modem talking to the airport. Because I can connect my MacBook directly without a problem, they of course say it is not their problem.... Any suggestions? I have turned the various pieces of equipment off an on about 50 times already - no help....
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How did you connect the computer to the router. If you are using a DSL modem it will have a DHCP server in it that is allocating IP addresses across your network. If you added the router to the computer via a hub or network switch what is the computers ip .
address. Remove the WI FI router - turn off P.C and then Go to cmd or dos prompt if windows based system and type in ipconfig and press enter to see if ip addresses are 10.0.0.2 if they are your dlink router uses 192.168.0.1 so you need to make the dlink router ip addressand subnet setting to match the Modem ip addresses of the DHCP server. Change the ip address of the dlink router to be 10.0.0.2 and change the modem to allocate DHCP IP addresses from 10.0.0.10 to 10.0.0.255. Only do this if IP addresses are 10,0,0,1 to 10.0.0.,254 on the desktop p.c with the dsl or cable modem connected.without the router being involved. (you may need to ask the ISP what the user name and password is of the modem and it should be ip address xx.xx.xx.1 so type this into a browser to change the modem settings. 10.0.0.1 or 192.168.0.1 just remember if the modem is 192.168.0.1 so is the Wi router from d-link and you will have an ip clash problem)
. How do you do this by ethernet connection from only the desktop directly with only the Wi FI . router. Go to a internet browser and type in the URL 192.168.0.1 and then change the router ip address to match what the DSL modem DHCP issues..
Page 14 of Router instructions see http://files.dlink.com.au/Products/DIR-615/Manuals/DIR-615_C2_Manual_v3.10.pdf
in the manual it states to use a direct ethernet connection for the setup program but you need to be connected to the internet for it to work but if the IP addresses are wrong or clashing will have no internet. You also want to set the modem as the DCHP server and disable the DHCP server in the set up of the wi fi tand set the WI FI router default gateway as the ip address of the Modem. if any DHCP server options in the WI FI router sert to the modem ip address. .
<p>There are two basic types of IP addresses of internet
service providers (ISPs) to provide customers with Internet services: a dynamic
address or DHCP and a static IP address. A static IP, as the name implies, uses
the exact same IP, and you're online all the time. The DHCP IP configuration
uses a "stack" of available IP addresses each time a modem is online
and an IP address of the network of the ISPs is simply grabs the first
available IP address from the stack. The IP configuration of DHCP, then it is
very easy for a new public IP address from your provider at any time <br />
<p>1. Unplug the cable modem from Time Warner. Total count of
30 seconds and close. <br />
<p>2. Allow the modem to reboot every five minutes. During this
time, goes through the boot cycle, contact your provider and ask for a dynamic
IP address. <br />
<p>3. Navigate to the computer's IP Configuration Manager. For
most versions of Windows, the easiest way to do this is to open the Start menu,
click All Programs, then select "Command Prompt" from the
"Accessories" menu (for future versions of Windows, you may need to
the right button on the Command Prompt and select Run as Administrator "to
show itself sufficient permissions on IP of the computer information). <br />
<p>4. IP address to test your computer by typing
"ipconfig" and "Enter" Command to the numbers printed next to
"IP address", like "IPv4 or IPv6 address." The number
displayed on the public IP address of the DHCP as the modem from Time Warner
will receive net. <br />
You shouldn't have to configure anything except the PC's should have IP and gateway set to auto.
Here is how it works:
A router connects two separate networks and manage the traffic between them.
In most home network applications the router connects your local group of computers and devices known as the LAN with the Internet, commonly called the WAN or Wide Area Network.
The router usually assigns unique Local IP addresses to all of the devices connected to it via a service known as DHCP. The addresses assigned by your router are private addresses http://en.wikipedia.org/wiki/Private_net... and are not routable across the Internet.
Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks. Computers that are connected to IP networks must be configured before they can communicate with other computers on the network. DHCP allows a computer to be configured automatically, eliminating the need for intervention by a network administrator. It also provides a central database for keeping track of computers that have been connected to the network. This prevents two computers from accidentally being configured with the same IP address. http://en.wikipedia.org/wiki/Dynamic_Hos...
Your cable or DSL modem will get a Public WAN IP address from your ISP's DHCP service. These public IP addresses are leased in blocks by your ISP and are Internet routeble. The modem is connected to the WAN port on your router. The router will manage the traffic between the devices on the LAN and the Internet.
If your 5 port switch is connected to one of the router's LAN ports and router's DHCP is on then it will configure the clients attached to It automatically.
is your wn2000rpt connected to the wrt310n or the modem? are you using DSL modem? if so you may need to call in DSL service provider to configure something on their side first. for router configuration, you need to use static IP on your computer in the same subnet of the default IP address of your router. did you configure it yet? if you already get in the configuration page, then try to use DHCP only on one router. if you are using DSL modem then you might need to choose PPPoE as the connection type. Then check the cable and reboot your computer. If your computer is configured as receiving DHCP IP address then make sure there is a DHCP on your router. Anyway, if you tell me the details of your modem and router make, model and connection and the operating system on your computer I can tell you more.
Using the Airport utility on your macbook (located in your Utilities folder) will tell you what the conflict is.....most likely you have DHCP issue or the network is at the incorrect setting. The wizard in the utility will tell you what you should fix.
Cable modems don't usually have this issue so I'll assume your on a DSL connection, 56K modem, or someother phone related variant. You were most likely setup for a connection through your Airport using local IP settings on each machine and when you moved the machine you reconfigured yourself with a DHCP address. There are two solutions. (1) Reconfigure every machine for DSL (2) Configure your airport for DSL and connect everything to it.
Unfortunately the process from one provider to another varies slightly. But for that reason I generally only recommend cable for multi-computer housholds sharing a web connection.
Your IP address is assigned (leased) to you from your internet service provider. With that being said, you could possibly call them and ask to release your old IP address and have them assign a new one. If you happen to have a static IP address assigned from your ISP you can call them as well and ask to have your IP address changed too. It would be up to them to change it though.
Ok I am goin to make some assumptions here, you have dial up service right? first you need to get DSL which allows you to use your Internet and phone at the same time on the same line. The other choice is to get cable modem service which frees up your telephone line because your internet service will be coming over your cable connection.
Once you have DSL or cable modem you will need to connect and configure your router. plug the ethernet cable from your Cable modem or DSL Modem into your Router's WAN port the plug your PC into the Router's LAN port. Your PC should pull an IP address using the DHCP protocol. You can check this by opening up a cmd prompt window in Windows and typing in the command ipconfig and pressing the enter key.
Once you have your ipaddress (which should be 192.168.1.xxx xxx = some number between 2 and 254) try to ping the gateway address by typing in ping 192.168.1.1 and hitting the enter key.
you should get 4 ping return indications.
Once this happens log into your router via the default gateway IP address (192.168.1.1) from your web browser by using the default login and password (these default settings should be in your documentation but the log in is admin or leave the box blank, and the password is admin)
once you are logged in set your WANconnectivity for DHCP (cable modem) or PPPOE (DSL). then for DSL put in your login and password given to your by your DSL provided, for cable modem just select the save button (for both) and the the router should pull a WAN side IP address. check this by looking at your router's WAN settings.
once you have don this you should be able to connect to the Internet.