Question about Arris Touchstone 450a (CM450) Modem

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My pc won't connect to the internet

How do i stop my modem from recognizing the IP address of my notebook and get it to recognize the IP address to my desktop without a router.

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It is the MAC address that needs to be scrubbed from the modem.

power off the desktop, power off the modem, unplug the data cable from the modem, unplug the POWER connection to the modem.

WAIT 3 MINUTES

Connect power to modem, let it reset
Connect data cable to Modem
power on computer

Modem should now connect & work with desktop.

Each time you switch between systems, you may have to do this. More than enough to make me buy a router. =)

Please rate the post. =)

Posted on Jul 15, 2008

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Connect motorola modemsbSB6121 to Belink N600 wireless router with out losing internet signal


Step one turn on PC directly connected to ModemsbSB6121 without Wi FI router being involved.
Step two go to Command prompt type in ipconfig (press enter)
Step three note IP address of default gateway and ip address issued to P.C.
Step four type in default gateway address into browser and log into Modem.
Step five look for DHCP Server and allocate IP addresses from at least 50 for example 192.168.0.50 starting ip lease ending ip lease 192.168.0.254
Step six connect Wi Router to P.C. via ethernet cable only - remove ModemSB6121
Step Seven shutdown and restart p.c
Step Eight go to Command prompt type in ipconfig (press enter)
Step Nine note IP address of default gateway and ip address issued to P.C.
Step Ten type in default gateway address into browser and log into Wi Fi Router
Step Eleven Change IP address on Router to 2 as example 192.168.0.2. (it has to match in that modem device would have been 192,168.0.1)
(if it was 10.0.0.1 make wi fi 10.0.0.2 make sure subnet mask is the same like 255.255.255.0)
Step twelve Change DHCP Server to off
Step Thirteen may need to set default gateway to MODEM IP address for example 192.168.0.1
Step Fourteen plug modem router into Wi Fi router may need to plug into WAN port on WI FI router .
Step Fifteen shutdown and Restart Computer
Step Sixteen go to Command prompt type in ipconfig (press enter)
Step Seventeen type in PING 192.168.0.1 (if this is modem IP address and default gateway IP addess)
All this above is to avoid IP address conflicts or mismatching
Subnet mask should be 255.255.255.0
either it uses 192.168.0.1 or it uses 10.0.0.1 make sure Wi FI router is set to different address to Modem Router.
I suspect either a clash occurs or your P.C gets a different IP range from ther WI FI DHCP server.
Happy troubleshooting !














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Why will it not connect to the internets IP address?


If you reset the modem and ip address will not change and remains same hence it is static ip address.If you reset the modem and the ip address change ,it is dynamic ip address.
You can get the Ip address from your internet service provider.you can check the ip address using the site Ip-details.com .

Jan 25, 2013 | RCA DCW615R Wireless/Cable Modem

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Need ip address subnet mask number gateway number and dns server number


If the ip address you need is the Internet IP address, this is assigned by you service provider.
If you need an internal ip address, have a look in the modems configuration window.
This window is accessed using internet explorer and typing in the local address of the modem, usually this is 192.168.1.1 so enter this number. If this does not work, go to the modem manufacturers website and in the support section should be the manual (if you dont have one) and in the manual will be the ip address to access the modems configuration pages.
You must undertake these steps with your PC connected to the modem using a network cable, this will not work if you try this using a wireless link.
Usually, the admin and password details are admin admin. So type admin in the name section and admin in the password section.
Once you access the configuration area, navigate to the DHCP area and turn DHCP on.
DHCP stand for Dynamic Host Control Protocol. This simply gives an internal ip address to all the machines connected to the network.
Once this is done, save and reboot the modem and your PC.
Next,click on start and then run and enter CMD into the run dialog box.
When the text window opens, type in : ipconfig /all
dont forget the space between ipconfig and the / symbol
This will give you a list, in this list is the gateway ip address etc.
Usually, the DNS address is assigned automatically by your service provider but if not, you may have to contact them to get this number.
If you are trying to connect a second PC to the modem, all these details will be entered for you as long as you have "Obtain ip addresses automatically" ticked in the properties window of network connections. This is under the network connections applet in control panel. make sure everything is set to automatic.

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How to connect 2nd computer to internet from bsnl type2 modem modelzxdsl 531b through ethernet cable


Its simple
1. connect a lan cable from ur modem to ethernet switch(For ex: 4-port)
2. Take 2 cables from ur switch ports and connect it to ur Pc's
3. Configure DHCP on your modems. So that ur pc's obtain ip address automatically from ur modem.

This is how u connect multiple computers to internet by a single internet connection



Jul 06, 2010 | Modems

1 Answer

UNABLE TO CONNECT WITH MY LAP TOP ON INTERNET HAVE FOUR LIGHTS ON AND FIFTH ONE FLASHING JUST STARTED YESTERDAY.


So that means its working well and connected to the ISP' server. What is your connection? Is it ADSL?
First make sure that all light have the color of green. If they are Flashing with color RED that means the property associated with the light is having a failure.
Here are the description of Colors and Lights.
Modem Light state: Unlit Flashing Red Flashing Green Steady Green
Cases:::
Power Light
Modem is not getting power - no light Modem has failed POST - Red Power is on - Steady Green
Ethernet (2nd Light)
No Ethernet link detected - No light Problem with ethernet port or cable - Flashing Green Modem has detected a successful link to a PC or router - Steady Green
DSL (3rd light)
ADSL sync signal is not detected - Red Modem is trying to synchronize. - Flashing Green Modem has ADSL sync and is ready for PPPoE session traffic - Steady Green.
Internet (4th light)
Modem has given up or isn't configured to initiate the PPPoE session - No Light PPPoE initiation has failed or PPPoE has been terminated. - Red Initiating a PPPoE session to Internet - Flashing Green. Modem is ready for Internet traffic - Steady Green.
Note: This light sometimes not working even if the connection initiated.
Activity
Normal DSL traffic flow - Flashing Green. Steady traffic flow - Steady Green.
Solving problems.
Case1: You have to connect your machine to the Modem Via the Network cable. Plug the other side of the cable to your Machine. (Not the modem port. Network card port.). Case2: You have to make sure that you have installed the Network Card drives. To check that you have to use Device Manager. Follow these steps. Hit Windows key with R In the "Run" box type devmgmt.msc In the right hand side check whether the network card is installed. If it has a yellow exclamation mark or a mark with red that means you haven't either installed or its having a device/driver problem.
Case3: If its fine then what you have to do is to check your network settings. Heres how: Since you haven't specified the Operating System I m including the Windows XP method here. Not much difference in other Operating Systems as well.
  • Get the Control Panel.
  • Go to Network and Internet Connections.
  • Go to Network Connections.
  • Check the Local Area Connection.
  • Right Click and check "Status".
  • If it says connected
  • Check the Duration and Speed(100 or 1000Mbps).
  • If the settings are fine go to "Support" Tab.
  • Check whether the Machine has received an IP Address. Which is often in the range of 192.168.254.xxx for Siemens Modems/Routers.
  • If you see an IP Address which starts from 169.xxx.xxx.xxx your network card was unable to pick an IP Address from the DHCP router which runs in the modem. (If you run a DHCP in the machine you have to configure to stop leasing IP Addresses to your machine from the Router/Modem. You can try the "Repair" button below and it will try to Release and Renew your IP. If it fail either you have a problem with your network card or Modem/Router (Could be the cable also).
  • If you still see the IP Address which starts with 192.168 the connection with your Modem is fine.
  • Next: Right Click on the Local Area Connection again.
  • Go to "Properties".
  • Double Click on "Internet Protocol (TCP/IP).
  • Check the settings.
  • The settings should be "Obtain IP Addresses Automatically" and "Obtain DNS Server Address Automatically". (But if you know the router's/Modem's IP Address you can configure it and you can give a "Static IP" to your PC as well. It must not be the Router's / Modem's IP and must be in th SAME SUBNET. If router uses 192.168.254.xxx you can assign it as 192.168.254.2)
  • Then Apply the Settings and go to the "Status" again and then click on "Details".
  • Except Wins Server all others must be populated with values in 192.168 range. Check the "Default Gateway" Setting. Its very important that you have pointed the machines Default Gateway to the Router/Modem.
  • Final Check:
  • Go to the "Internet Protocol (TCP/IP) again and click on "Advanced".
  • Check IP Settings (first tab) too make sure DHCP is enabled on you machine.
  • Go to "Options" tab and Check TCP/IP Filtering. Click on properties and make sure that the Filtering is not enabled. If it enabled make sure your network adapter Permits all routers traffic in to the machine.
By following these options will let you surf the internet.
Check for the behaviors of indicators as well.
Case 3 :Browser settings
In the Internet Explorer go to: Tools -> Internet Options ->Connections -> LAN Settings -> Its fine if any box is not checked. Or you can check the "Automatic Detection".
Last thing is If you have a Firewall or Antivirus Suite Please make sure that you are not blocking adapters and traffic/application. You can try to disable Windows Firewall and check whether it works as well.
Hope this will solve your issue. Please be kind enough to rate the answer with a comment (testimonial) if this helps you to overcome the issue. Feel free to contact us further. Thanks for contacting Fixya

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1 Answer

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Establish a new connection via hardwire network or wifi and allow the PC obtain a new IP address as normal. If unable to access internet sites, you can try to forcing a new IP address by opening the DOS box again and type "ipconfig /renew" This should cause the machine to get a new IP address. The "ipconfig" commands will probably not force a modem connection to get a new IP address (I haven't run modems for a long time - so I'm not familiar with their procedure of obtaining an IP address)

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1 Answer

Cant connect to xbox live need an ip address how do i get one


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1 Answer

No ip address from modem to linksys wrt160 n router


1).turn off the modem and the router.disconnected from the Internet ISP. and the computer.
2).disconnect the router from the modem.
3).turn on the modem.
4).connect the router to the modem, and turn on the router.
5).connected the computer to the router, adn turn on the computer.
if you are using wireless, waited about 5 minutes before turning it on.
goto control panel>>wireless network, and configure the wireless seting.

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3 Answers

Modem conection


In order to troubleshoot this problem, I need the following information:

Are you using a router?
What OS do you have?
Does your modem have a steady "online" light?
What IP address is coming up in ipconfig?

Oct 03, 2007 | Modems

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