CONNECTING AE TO CABLE MODEM

Hi.
I have an Arris cable modem connected to my MacBook and everything works fine but when I connect my AE everything seems go go wrong.
I have a static IP and I transfered the details to the AE via ethernet and then plugged the cable modem into the back (it is a 96.x.x.x).
I managed to get a green light on the AE and even connect the MacBook to the AE via wi-fi but I don't seem to be able to access the internet. Network preferences shows a new IP address now (10.x.x.x) but the Airport utility shows the AE has the 96.x.x.x still.
Should I be doing something else?
It works fine when I unplug the AE and plug the laptop back in...
Thanks!

stevem98, Welcome to the discussion area!
Most cable modems will only talk to a single device until they are reset. Powering off most cable modems causes this reset to occur. When the modem is powered back up, the modem detects the new device and will talk to it.
The reset needs to happen every time the cable modem's Ethernet connection is switched from one device to another... like laptop to AirPort Extreme base station (AEBS).
Some cable modems have a button on the back for the reset.
Some cable modems have a small internal battery which must be removed for the reset to occur.
Some cable modems must be powered off overnight so that equipment back at the ISP can be reset.
Did you power off the cable modem when switching the connection?

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The problem likely is not your Mac but your cable modem.
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i have a Linksys Wrt54gs connected to a Cable modem.
it worked for about 8 months.
My kid pressed a button by accident and now it won't work.
the router just keeps resetting.
i unplugged everything.
conencted 1 computer, and everything is fine.
Received DHCP address.
Once i plug in a second computer it starts rebooting.
Both computers are set to DHCP.
NO internet connection is connected at this time for troubleshooting purposes.
Nothing is connected to the ethernet port on the Linksys router (port for internet access), only 1 and 2 are connected.
i reset the router and still nothing.
i can connect 1 computer via wireless and 1 computer via direct connection and all is good. Once 2 devices are connected via direct connections it starts resetting.
i can even connect the modem to the router (for internet access), and connect to the linksys router via wireless from my computer and get internet access.
But once i direct connect 2 connections, the router starts resetting.
i have reset and reboot it with every combination i can think of.

Its good that its working now.
If it happens again, try this :
Press the reset button on the router for 30 seconds. The Power light will start flashing. Turn the Router and the Modem OFF. Turn the modem ON first, wait for 10 seconds, turn the router ON, wait for 10 seconds, you should be ONLINE !!!
Do this when the computer os connected to the router with a cable.
than on the computer open Internet Explorer and in the Address Bar type : 192.168.1.1 and hit enter.
It'll ask for the password. The default password is admin.
Once in the setup page. Click on the Wireless tab.
In there Change the Network Mode to mixed. And change the SSID to your name.
Change the Channel to 11. And Enable the SSID Broadcast.
Save the settings here. After that Click on Wireless Security and configure it accordingly and Save the settrings.
Than click on Advanced Wireless Settings. In there Disable the SES function.
What is the firmware on the router ?
Click here to see the updated list of firmware.
For information on upgrading the firmware on the linksys routers :
http://linksysfirmwares.googlepages.com/upgradingfirmware
For information on wireless security :
http://linksysfirmwares.googlepages.com/wirelesssecurity
Message Edited by theonkar on 08-20-2008 04:48 AM
C | EH
linksyshelp.blogspot.com

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Help Please: How to connect to a cable modem?

Here's the deal: I'm getting a new iBook tomorrow I'd like to get an advance sense of what I'll have to do to get it connected to the cable modem that I'm using with my current Digital Audio G4.
Will the iBook self-configure if I have have it connected to the cable modem when it first starts up, or do I need to record the TCP/IP stuff from the G4 for use with the iBook?
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Hi, I have a MacBook Pro and a PC both connected to a TC who in turn is connected to a cable modem. I have no wifi accessfrom my MacBook pro (self assigned IP - no internet connection msg) while I do on PC through ethernet? can anyone help?

I was working yesterday afternoon when the wifi suddenly went cold. Initially on the MacBookPro and on the ethernet connected PC. I reinitialized modem and TC through the mac and then the ethernet on the PC worked again and has since.
I've reinitialized both the modem and TC many times, as well as checked the cables. Moreover, I've tried to renew the DHCP lease, provide the DNS servers manually, erased all networks in Network preferences and in KeyChain etc. but nothing seems to work.
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I've tried from the café down the street and the Wifi worked perfectly well though a little slow, but that could be their connection not the Airport. Therefore, my I deduct that there is either something wrong in the TC or something went wrong in the network settings in the Mac. But that doesn't help to move forward and fix the darn thing.
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Eh la Pastenague! Je savais que tu était léthale pour l'homme mais ce sont pluôt les machines à pommes qui devraient te craindre. Merci! Solved.
For future reference.
My TC is a 3rd gen.
I actually had to reset to standard defaults not only once but twice. The first time I simply returned to my old profile but that only led to the same message error on the network settings (i.e. IP by default, cannot connect to the internet). Therefore the second time around I kept my profile as backup and re-created a new one plus a guest one.
The airport utility then signaled to issues remaining:
1) Internet access was cut - this I solved by simply reseting the cable modem
2) There were no DNS Servers - I simply copied the ones I had from the previous setup and it worked
I did have AppleCare....
I'm online again and I hope for good.
Thanks a lot
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Hello:
This article will give you basic guidance.
http://docs.info.apple.com/article.html?path=Mac/10.7/en/mchlp2875.html
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I have Comcast internet service (coming through a Linksys CM100 modem, no router) plugged directly to a 2TB dual-band TimeCapsule. In the past this has been working, and the TimeCapsule has been providing internet access to three Macs, as well as backing them up. I also have an AirPort Extreme base station (not the dual-band one but not the 2003-era UFO-shaped one either) that has been connected to the TimeCapsule over house ethernet to provide wireless through the rest of the house. Last night my connection kept dropping out. I could connect to one wifi network and it would not work, then I would connect to the other and it would work for a while before stopping. I have disconnected everything and then replugged only the cable modem and my TimeCapsule. When ethernet is plugged directly into my iMac from the modem, I get an internet connection without issue. When I plug it into the TimeCapsule, it reports an internet connectivity error. It says it gets no IP address, and no DHCP setting that I provide it with alleviates this message.
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When ethernet is plugged directly into my iMac from the modem, I get an internet connection without issue. When I plug it into the TimeCapsule, it reports an internet connectivity error.
Because cable modems associate and "remember" the device with which they have established a connection, they need a complete reset whenever you change the device that is immediately connected to them.
Push the reset button, If present, on your modem
Power off the modem
Pull the battery if it is easily accessible
Power off everything else on the network, order if not important
Wait at least 15 minutes
Make sure that the Ethernet cable from the modem is connected to the WAN port (circle of dots icon) on the Time Capsule
Power up the modem and let it run 2-3 minutes by itself
Power up the Time Capsule the same way
Power up each of your other devices about a minute apart
Check for proper operation the network.

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atotheb, Welcome to the discussion area!
Did you power off the cable modem when switching the Ethernet connection from laptop to AirPort Extreme base station (AEBS)? This is usually required.

Connecting Motorola SB6121 Cable Modem and AirPort Extreme

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First, if you're purchasing your own cable modem, you will need to contact your ISP and provide them with the HFC MAC ID on the cable modem. Once you've gone through the motions, you will be able to connect your Mac (in my case Macbook) directly to the modem via ethernet cable and access the internet.
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When I connected the SB6121 to the AE, I could connect wirelessly to the AE, but I did not have access to the internet. So, basically the SB6121 and the AE were not talking to each other despite being physically connected via ethernet cable.
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After days of searching for online answers and forums (and trying different solutions) I was able to successfully get everything up and running. Make sure that you have 2 ethernet cables available.
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Remove the ethernet cable from your laptop and plug it into the "internet in" jack in the back of the AE.
Power up the AE.
Connect your laptop to the back of the AE using ethernet cable #2.
Launch a browser. You should now be able to successfully connect to any website.
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I was having the exact same issue tonight. Just purchased the AE Model A1408 and haven't been able to maintain an internet connection on my iMac whenever I tried hooking it up via the Airport Utility application. So after I had the SB6121 connected to the AE and the AE connected to my PC with no luck, I then went to the Network icon in System Preferences. Clicked on "Assist me...". Then clicked on "Diagnostics..." and followed the directions which basically had me first power down the SB6121 modem and power it back up. Then I powered down the AE router and powered it back up. At that point I was now getting an internet connection. I then took my ipad 2 and went to the Wi-Fi settings and noticed it was asking me to setup a network through my AE. I selected that and went through the simple steps to set up the network and password and now it all works. I am a novice so don't ask me why but I now get a green solid light on my AE. I can connect other devices wirelessly. I can still access the internet on my iMac. For whatever reason, using the Airport Utility on the iMac doesn't work in my case and using my ipad to set up the wireless network did the job.

CONNECTING AE TO CABLE MODEM

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