2 airports 1 cable modem?

I have 2 Apple TVs connected to an Airport Express. Both ATVs reliably show up in iTunes Devices list. I want to replace Express with new Extreme but after much time and effort, I cannot get the 2 ATVs to show up in Devices list with my Airport Extreme. (This seems to be a common problem appearing over and over in this forum, and I have tried many of the suggestions.) When I replace the Airport Extreme unit with the Airport Express, both ATVs show up and syncing, internet access, etc. is fine.
My problem is I want to use the ethernet and USB ports on the Extreme (the Airport Express lacks these) and take advantage of the Extreme's stronger signal to reach a second computer (iMac) at the other end of the house.
My question is: Can I connect my cable modem to an A/B ethernet switch and connect the A and B ports of the switch to Airport Express (say, port A) and Airport Extreme (say, B) and then switch to A to access the network in which the Apple TV's appear and switch to B when I'm using the extra ethernet/USB ports of the Airport Extreme and the distant iMac.
I'm assuming I can set up 2 different internet networks (different names and passwords) on my main Mac and then choose which one I want to use at any given time.
Of course, all this would be unnecessary if the Airport Extreme would recognize the 2 ATVs and reliably list them in iTunes' Devices.

Phil,
I believe the topic is covered in the 'Airport Network Designs' section of the manual that came with your extreme.
So far as this being a widespread problem, it is one of the most recurring topics, however you should remember the forums are the place to come with a problem, rarely will anyone who doesn't have a problem put in an appearance, As a percentage of those who have bought tv's the number of these types of problem is really very tiny. Additionally not all networking problems are the same, for example some can connect to itunes but occasionally lose connection, others have issues with security protocols etc.
Add to that networking is something that most people find difficult, different hardware comes with different features and sometimes different names for the same features and often the features are set up in different ways. I believe that most networking issues are solvable, but diagnosing them can be quite difficult sometimes.

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Internet Connection Issues between Airport & Cable Modem

I'm posting this because I couldn't find a similar answered question here, and I hope to save someone else the grief I went through trying to get my wireless network working.
Bought an Airport Extreme to connect to my non-wifi cable modem. The Airport had no difficulty setting up the network, and all of our computers and wireless devices were able to connect to the network. Unfortunately, none of them could connect to the internet.
The problem turned out to be that you need to edit the default network configuration to add the DNS server addresses of your cable provider. As soon as I did that, all the devices had internet. As far as I can tell, the settings live on the modem, but are not picked up by the Airport in quick setup process.
I hope this saves someone else a trip to the Apple store or a long support call.
Ricka

Bypass the router and connect your computer directly to the modem.
Make sure that you can access the Internet when you connect the computer directly to the modem.
If you can access the Internet through the modem then try to configure the router manually.
Connect the modem to the Internet port and computer to Ethernet port on the router. Press and hold the reset button on the router for 30 seconds. Release the reset button and wait for 30 seconds. Now try to reconfigure the router manually.
Follow this link to configure the router with CABLE Internet service.
Follow this link to configure the router with DSL Internet service.

How do I add an airport extreme to a cable modem with only one ethernet port, while keeping that port connected to my Mac?

I have a mac pro connected by ethernet to a cable modem via ethernet. There is only one ethernet port on the modem.
I want to keep the Mac connected via ethernet for speed. Is there a way that I can add an airport extreme to this set up - for my ipad and roku, and for guests to use - or do I need to buy a router to put between the modem and the mac?
If I need a router, what kind?
Thanks.

The modem connects to the WAN "O" port on an AirPort Extreme router.
The Mac Pro connects to one of the three LAN <-> ports on the AirPort Extreme router.
Or if you do not need the ability to connect a hard drive to the USB port on the router, you can save a bit by using an AirPort Express.
The modem connects to the WAN "O" port, the Mac Pro connects to the LAN <-> port
Either the AirPort Extreme router or AirPort Express router will allow up to 50 wireless device to connect.
There are many other wireless modems offered by other manufacturers as well.

How do I configure my AirPort Extreme as a wireless access point? My cable modem goes to a router, and one of those ports goes to my AirPortExtreme.

I am about to hook up my airport extreme. My cable modem goes into a router, and one of those ports will supply my airport extreme. I was told by the Apple Store that I would need to configure my airport extreme as a wirreless access point. How do I do this?

With sbcgobal I got a Gateway 2wire modem. What I would like to know is how do I set up my APE as remote?
Unfortunately, you won't be able to do this as few non-AirPort routers will work with AirPorts in a Wireless Distribution System (WDS).

How do I set up Airport Extreme with cable modem and router?

Hi--
I'm having a house built and all of the wiring for TV, phone, and internet will be centralized in a closet. The cable modem can be placed there as well. In one room in the basement I want to use my Airport Extreme for my iMac and USB external hard drives. In another location of the basement, I'd like to set up a Time Capsule for another desktop and USB printer. If the cat5e comes out of the wall at each location, I "think" I need a router at the closet location. I also thought I might need an Airport Express upstairs on first or second floor to boost signal for my laptop. The house isn't that big so maybe that's overkill. So beyond the router question, do I want to set up a roaming network and have the Airport Express connected via ethernet or just wireless if the thought is that I need this? Finally, if I should connect cable modem to router to Airport Extreme, Time Capsule, etc., in what order and ports does the equipment get connected? Many thanks!!

Welcome to the discussions, Forum Girl!
It would be best to position the cable modem and main router in the central location like the closet if possible. The other devices would connect via ethernet to the wall jacks in each room.
If you could setup a "roaming" wireless network as you mention, this will give you better wireless performance and coverage. This is the way commercial establishments like airports, businesses, etc. are configured for wireless.
The order of connection would go something like this: ethernet connection > cable modem >main router>devices. Devices could be computers, routers, a backup device, etc. Since the Extreme has only 3 LAN ports for ethernet connections, you will also need to plan to install an "ethernet switch" near the location of the main router to provide enough ethernet jacks. If you are planning to use DirectTV, etc or your audio/video devices require ethernet connections (most new products do for updates and extra features), be sure to plan for that as well.
Make sure that CAT5e or CAT6 wiring is run so you will be able to take advantage of faster gigabit speeds.
Finally, it would be a good idea to work with an IT specialist to go over your plans to make sure all the bases are covered. This would be money well spent.

How do I set up airport on my macbook pro (wired with ethernet to cable modem) and my ipad2 to use ipad wifi?

How do I set up airport on my macbook pro (wired with ethernet to a cable modem) and the wifi settings on my ipad2 to enable the use of wifi on my ipad?

http://docs.info.apple.com/article.html?path=Mac/10.5/en/8156.html

How do I get a Motorola SurfBoard SB6141 DOCSIS 3.0 Cable Modem to work with my AirPort?

I just bought a Motorola SurfBoard SB6141 DOCSIS 3.0 Cable Modem to replace the one Comcast was renting to me. My configuration is as follows:
Modem is wired via ethernet to the AirPort Time Capsule
Time capsule is wired to an iMac, a PC, and an Xbox 360
Time capsule is wireless broadcasting to connect various peripherals around the house (iPhones, consoles, printer, Macbook, etc)
Anyway, while the modem works great plugged straight into the iMac, we completely lose our internet connection (wired and wireless) if I plug the AirPort Time capsule into it.
Does anyone know if there is a conflict that I can disable on one of these devices? The airport utility was warning of a double NAT.

Did you power off the SB6141 for 20min before you change over from iMac to the Time Capsule.. this is required. (Test at 5min if you want).
Make sure the TC is set to dhcp on the internet tab.. and DHCP and NAT on the network tab.
Power up the modem.. wait a couple of min for it to settle down then plug in the TC.
No luck try longer times.. or ring comcast and ask them to reset the IP.
If your TC is tall one or running 7.6.4 firmware.. another problem may arise where the 6141 does not connect properly.. there is a problem between this modem in particular and the apple routers.
You can try using a crossover cable instead of ordinary patch cable or use a small 10/100 switch between them.. that will sometimes help.

I have a cable modem for my Time Capsule. Do I need a separate cable modem for my airport express?

I have a cable modem for my Time Capsule. Do I need a separate cable modem for my Airport Express? (I'm using it to "extend" my network and also for Air Play.)

No, you connect to your Time Capsule wirelessly to "Extend" the network..
See this Apple doc:
http://support.apple.com/kb/HT4259?viewlocale=en_US&locale=en_US

I have a internet connection thru a cable modem but the signal is not strong to reach one of other rooms, so i purchased a airport express so how do i connect it to the exisiting modem do i have to install the cd that came with it, the modem is connected

I have a existing internet connection thru a motorola SBG900 cable modem connected to my imac, i purchased a macbook pro but the signal is not strong, so i purchased a airport express but i dont know how to install it, do i have to install the CD on my macbook pro or the imac. i live in a four bed room house distance between the imac and macbook pro is around 25 -30 feet.
Thanks
Yesh

Hello:
This article will give you basic guidance.
http://docs.info.apple.com/article.html?path=Mac/10.7/en/mchlp2875.html
Barry

Vonage between cable modem and Airport Express is a problem

I have my Comcast cable modem connected via Ethernet to the Vonage box which is connected via Ethernet cable to my Airport Express. When I try to connect wirelessly via my Powerbook it's a crapshoot whether or not I can connect to the internet. Mostly the quality is very poor if you can connect at all. If I cut the Vonage out of the equation hooking the cable modem to the Airport Express it works perfect. So Vonage is my problem and I need to change some settings either with my computer or my Airport Express, but which ones? I've been given several different ideas from the information I've sifted through (i.e. change the DNS, change the sharing prefs, get a hard wired router). Oddly enough an old HP computer I have in the basement connected to the internet via another Airport Express has no problems with connection at all. If someone could let me know which of these fixes I am preparing to try would work the best I would appreciate it.

Interesting. So you have two Airport Express devices configured into a WDS, with the one upstairs functioning as the main base station and the one downstairs functioning as a remote base station. And your PC downstairs connected to the remote base station has no problems connecting to the internet. Is that PC cabled to the Airport Express, or does it connect wirelessly to the remote Airport Express?
What happens if you bring the Powerbook downstairs to where the PC now resides. Does the Powerbook then get the same great internet connection as the PC?

How to set up 6th Generation AirPort Extreme to cable modem as a wireless router and then connect my 3rd Generation Time Capsule to AirPort Extreme as a wireless extender?

What is the best way to set up my 6th Generation AirPort Extreme (A1521) to my cable modem as a wireless router and then connect my 3rd Generation Time Capsule (A1355) to my AirPort Extreme as a wireless extender? I live in a small 1 story house and I currently have the Airport Extreme connected to my cable modem in the living room and the Time Capsule plugged into the wall in my bedroom. I am able to wirelessly connect to the internet using the AirPort Extreme as my router and I can also do wireless back ups to my Time Capsule. My problem is that my connection seems to be really slow! My 1TB Time Capsule back up is only half way complete and it has been 3 days! My computer has been backing up all day and night for almost 72 hours and its still not even 75% complete. I have backed up to this Time Capsule in the past and it never took this long. I am thinking that when I set up my AirPort Extreme and Time Capsule using AirPort Utility I must have set it up incorrectly or something.
How do I set up my Airport Extreme and Time Capsule for the fastest possible internet speed and back up speed?
Thank you,

AirPort Utility 5.6 works with AirPort Extreme 802.11g base stations.
It works with N version airports.
It will also show details of the AC model but cannot be used for the setup.. mostly.
I purposely got the new 6th Gen Airport Extreme so my internet connection would be a lot faster!
Your network will be much faster when you have AC client directly connected to the AE. Older client will go no faster.. but what is worse.. extend wireless is mixing new and old wireless standards.. guess what one wins.. OLD.. So when you extend wireless.. you have no improvement whatsoever. This whole post is about extending wireless.. so you cannot extend to older equipment and do any better.. maybe slightly better signal although from your comments that isn't happening either.
I would rather not have to use an ethernet at all with the TC and I don't know EOP adapters are!
If you do not use ethernet then you are going to be forced to accept slow speed.
EOP (ethernet over power). Also called homeplug in the US.
http://en.wikipedia.org/wiki/HomePlug
Provides a method of networking over power cabling that already exists in your house.
So what your saying is for the fastest internet speed and back up speed possible I should keep my Airport Extreme plugged into my Modem and keep my TC set up as a wireless extender? Then when I want to do back ups I should plug an ethernet cable from my TC to my MacBook Pro?
To spell this out.
A wireless link to an extended device will go very slowly.. if it is not direct.
So lets say you have a laptop sitting in the lounge.. Your connection goes.. Laptop- - - - - AE- - - - -TC.
That means two wireless links.. wireless has this nasty half duplex and single channel nature.. it can send or receive (Tx or Rx) but not at the same time.
Ethernet by contrast does both at once. It is full duplex.
Wireless can talk to one client at a time.. so if there are multiple items using wireless lets say 4 devices.. then your computer gets a 25% time slice. Since wireless cannot handle multiple simultaneous connections.
Ethernet by contrast can connect multiple computers to multiple destinations at the same time.. all transmitting and receiving at full speed.
When you put all this together.. there are a couple of rules for fast connection.
1. Use ethernet at all times. Where you cannot use ethernet use anything but wireless.. eg EOP (homeplug) at least to try and get rid of wireless.
2. Where you must use wireless use it sparingly and make sure it is never more than one hop.. ie never have an extend wireless (repeater is more usual term). Repeater will cause instant slowdown of 50% and maybe up to 75% just because it is so inefficient.
3. Fastest wireless is 5ghz but it has very short range.. you need to be up close and personal to get it working.
Apple routers however unless you do manual setup I suggest are set to connect to best signal strength not best speed. It will therefore use 2.4ghz at 25% less speed than 5ghz because it is 1db better signal.. this madness means you need to setup manually for the best setup.

Airport Extreme saying no connection to the internet - cable modem still showing all is good. Airport Extreme light is still green.

I am having an issue where my airport extreme is saying there is no connection to the internet but still shows a green light and the status lights on the cable modem are all good. This is affecting both wired and wireless connection.
Today I had an issue where my iMac (wired) and other wireless devices could not connect to the internet but my work PC (windows 7 and also wired) was connected fine...in fact I was on a VOIP call at the time and had no issues. The only way I have of resolving this issue is to power cycle the airport by unpluging it.
Also, during this time I am unable to access the airport base station through via the airport utilities on my iMac, iPhone, or iPad.

I had the same experience yesterday when my airport extreme is green, cable modem has no problem and no internet on wired iMac or no WiFi. After talking to the cable company, there is nothing wrong with the cable modem and the line, the problem is in the System Preference>Network>Advance>DNS of the iMac. I don't know why as it seems like someone just turn my entire set up upside down. The only thing that I can relate to is that I was trying to figure out with Back To My Mac feature in iCloud between office and home.
In the Network, my DNS server somehow is 10.0.1.1 which is internal Apple IP. Take that out and you would see the actual DNS Servers from the providers.
Also when I look at the airport extreme through airport utilities, in Network setting the Router mode is Off (bridge mode). Once change this and everything is good to go.

I receive a not connected to the internet message several times daily on my iMac connected via airport to a time capsule which accesses the internet via cable modem.. When I input my password to enter network preferences, the connection re-establishes.

I receive a "not connected to the internet message" several times daily on my iMac connected via airport to a time capsule which accesses the internet via a cable modem. Software/firmware is up to date on the iMac (OSX 10.6.8) and Tme Capsule(7.5.2). Browser is Safari 5.1.
When I input my password at the prompt to enter network preferences, all the lights go green (ie... ethernet, ISP etc.) and the connection re-establishes immediately and states "the connection appears to be working normally".
It more of a nuisance than anything and seems to have started ocurring over the past couple of months. I also have a windows XP box also connected to the same cable modem that I never have internet connectivity issues with. I've verified all the physical aspects of the connections and can't see any evidence of any actual drops in the modem logs. I suspect it is just an intermittent communication loss between the Imac and the Time Capsule, but I am not very familiar with Mac equipment yet.
Just wondering if anyone has experienced a similar problem and what you did (if anything) to resolve it?
Thanks.

The AirPort Express will connect to your existing wireless network if the network is using WPA2 Personal or WPA/WPA2 Personal wireless security settings.
So, it can join the network as a client and then provide an Ethernet signal to your Time Capsule.
Be sure to configure the Time Capsule to operate in Bridge Mode so that it will be operating on the same network.

I have airport extreme 802.11AC as a base that connect to Cable modem. How can I connect D-link DIR-655 to AE to utilize as an extender or repeat?

Hello-
I have wireless router Airport Extreme 802.11AC that connect direct to Cable modem...how can I setup the D-Link DIR-655 wireless router to AE and act as extender or repeater?. Thanks in advance.

Apple has done their best to install proprietary software in their wireless routers that is designed to only allow other Apple routers to repeat or extend the network wirelessly.
So, the chances are extremely small that a D-Link....or another other router for that matter.....could be configured to do what you ask.
There are no settings on an AirPort Extreme that would allow a D-Link device to extend the network, so all that you can do is experiment with different settings on the D-Link device to see if it might be possible for it to extend the network.
A post on a D-Link support forum might be a good idea to see if any D-Link specialists have some ideas on this topic.
Good luck.

My airport extreme is flashing amber it says i need a ip address .... it was working just fine yesterday until i had to reboot cable modem how do i get my extreme to work again so i can have wireless

my airport extreme is flashing amber it says i need a ip address .... it was working just fine yesterday until i had to reboot cable modem how do i get my extreme to work again so i can have wireless..... please help!!!

Hi again Jen,
Most internet providers utilize "dhcp" -- you might want to check to see if your extreme is set to that function.
If you want to try, you need to go into airport utility and select MANUAL setup/ then click NETWORK button on top of the window. /select TCP/IP -- make sure that you see "Using DHCP" not MANUAL in the configuration window. If you do see using dhcp, click the renew dhcp lease button. Then you'd have to do the power down/up cycle again. If all this doesn't work, you can do a hard reset on your Extreme, which will bring it back to the way it came out of the box, then go through the same proccess that was used to set it up originally.

I cannot get my Airport Extreme to talk to my cable modem

I cannot get my Airport Extreme to talk to my cable modem. Cable modem is a Cisco, new, Charter cable company. New wires throughout. Connected to internet currently hardwired to cable modem. So I have internet service to the modem.

The modem needs an extended power down period in order to reset, as it is "remembering" your computer and thus will not associate with the AirPort Extreme.
See this User Tip from forum expert Tesserax:
AirPort - Complete Power Recycle

2 airports 1 cable modem?

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