Two networks - same cable modem

I have two networks in my home - an "n only" using the Airport Extreme Base Station into which the cable modem is attached, and a "g only" which is using the newly purchased Airport Express and which is connected to the Airport Extreme Base Station. The express is setup as a bridge only (I believe the Extreme is assigning the IP addresses). All seems to work.
Two Q's:
1. Can I use the Express in the fashion I mention above but connected wirelessly to the extreme? If so, how do I configure each unit?
2. I have an Apple TV and was wondering if changing things so that the Express assigns the IP addresses if things might speed up a little regarding Apple TV syncs.
Thanks!!

morahgreg, Welcome to the discussion area!
1. Can I use the Express in the fashion I mention above but connected wirelessly to the extreme? If so, how do I configure each unit?
If you are willing to lose the high speed of the 802.11n only network, you can configure the AirPort Extreme base station (AEBS) to operate in an 802.11b/g compatible mode. Then any 802.11b/g client can join including the AirPort Express (AX).
2. I have an Apple TV and was wondering if changing things so that the Express assigns the IP addresses if things might speed up a little regarding Apple TV syncs.
No it will not.

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Public and Priviate network from same cable modem - more questions please

A couple of weeks ago I asked about having both a privite network and a public wireless network that would work from one cable modem. The requirement is that the private network not be seen or be "hackable" by users on the public network.
Duane gave us the approach to use and we think we have it right, but because the security of our private net is so important, we want to make sure. We will not do the public network if the security of our private network is in danger.
Here is how things look:
Cable modem --> Router 1 WAN port
Router 1 regular ports --> Private Network -and- Router 2 WAN port
Router 2 regular port --> AirPort Extreme WAN port
We have our public network set up as WPA Personal and we broadcast the network name. The password for this network will be shared wiith users as they enter our public area where they can use their PCs. The default login/password on both routers and the AirPort Extreme have been changed. Connecting via AirPort to the public network I can see Router 2 but not Router 1 or any of my computers, printers, etc. when I browse the network via the Finder.
Do I have it right?
Does this setup give users on the public network any way to get to my private network, computers, and files? Are there any tests/experiments that I could run to further validate this setup?
How secure is it?
Am I asking for problems by offering a public network that shares some of the resources of the private network - modem, MAC address, IP addresses of routers, etc.
From the public net we have attempted to use the IP addresses of the computers on the private network without success.
The best answer I could receive is that there is no way to hack the private from the public. If this is not the answer, how secue am I.
Tim

When you state "Router 1 regular ports(8) feeding Private Network..." do you mean that there is another private router or are the private clients directly connected to router 1?
If you have a private router, the public devices connected to the AirPort Extreme base station (AEBS) could address and reach anything on Router 1 including the private router's WAN side.
The firewall in private router should block any of the public access to clients of private router. So any traffic from private router should be safe as long as the public has no physical access to router 1 nor router 2's WAN port.
If the private clients are directly connected to router 1, then the public clients can directly access any of your private clients. The traffic among private clients and from private clients to Internet would be secure (as long as my previous note about physical access is true).

Continually knocked off home network while cable modem looks normal

I have a cable modem connected to an Airport Extreme base station (circa 2005, so it's the 802.11b/g). Almost every day I get knocked off my home network and the name of the network that shows up is "linksys" for some reason. The cable modem lights continue to flash in their normal sequence. I live in a private house, not an apartment building.
What I then do is follow a protocol that I discovered on this site (I don't remember if it was this forum) a couple of years ago -- I shut down all the computers, unplug the modem and Airport, wait five minutes, and then plug everything back in sequence.
Last night after I got through yelling at my cable company, they ran some tests remotely and suggested that the problem was with the Airport base station. How can I check for the connectivity of that? What in the System Preferences or Airport Setup can I look at? Thanks.

Change the wireless channel on your AirPort Extreme to try to avoid the interference that you are picking up from the Linksys router in your vicinity.
Open AirPort Utility - click Manual Setup
Click the Wireless tab/label located just below the row of icons
Start with Channel 11
Update to save your changes
Keep trying different channels working your way down until you find a clear channel, or you run out of channels

Pc Desktop and macbook sharing same cable modem?

is it possible to connect my pc to my modem using usb and my mac using the ethernet at the same time?

Unless it's something special, you probably can't connect both the USB and Ethernet connection to your modem as it's likely just a modem and not a router. There is perhaps something you can do until your router arrives...
You could connect the modem to your PC with USB and (assuming your PC also has an ethernet card, which most will) you can then use 'internet connection sharing' to pipe out the connection on the ethernet. You can connect the PC's ethernet to a simple HUB for sharing or connect the PC to the Mac directly with an ethernet cable (although to connect to computers directly over ethernet you need to use a 'cross over' cable vs. the standard ethernet cable).
Back in the day before home routers were cheap and common I used a setup like that to share our home internet connection in our house via a wired network (with a dialup connection!!!)
Anyway, that should work but it does require some setup so since you've got the router in the mail might be best to just wait for that...

Two WRT54G, two networks, same Internet Connection

If anyone can take the time to educate me in how to effectivly stack routers to share one internet connection but set up two different networks I would really appriciate it.
I want to set up an open wireless network for customers but have my POS and Cameras on a seperate network that people using the wireless cannot access. I have two routers, and have tried using different subnets but cannot get it to work.
Is there any step by step instructions on linksys's site? I cannot find them.
Any help is greatly appriciated.
Thanks

Thanks for taking the time to reply.
I have one WRT54G v5 and one BEFSR41(sorry don't know the version).
Right now I have the BEFSR41 acting as the router and the WRT54G acting as a wireless access point. I have a hardwire connection going from port 1 on the BEFSR41 to port 1 on the WRT54G and have DHCP disabled in the WRT54G. Right now anyone connected wirelessly to the WRT54G has full access to my network.
What I want to do...
Modem------------BEFSR41-----------Point of sale registers/Camera DVR
                                          |
                                          |
                                          |
                                          WRT54G((((((((( to any customers PC
BEFSR41 DHCP 192.168.1.100-150 Subnet 255.255.255.0
WRT54G DHCP 192.168.x.100-150 Subnet 255.255.255.xxx
I want my Wired network to be on a different IP range and Subnet than my Wireless so that customers cannot get onto my wired network. (I think its called segmenting a network or something like that.)
Is this possible with linksys's stuff or do I need to step it up a notch and get something like a nomadix?
Thanks again for the reply.

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.

Trouble obtaining IP adress through DHCP protocals, cable modem.

Ok, lets see where do I start. Recently obtained a Mac G4 (not sure of the details other than that) and trying to hook it up to the internet through a cable modem.
The problem is, I can't seem to get it to comunicate properly to the DHCP server to obtain one automaticaly. Without that, I can't access the internet.
I've talked to the ISP support and they say that everything checks out on their side. I'm inclined to believe that as the computer I'm using now (windows PC) is connected to the same cable modem and has absolutely no issue.
Obviously as a windows user, I'm a newb at working macs, and so far I've pulled up zilch trying to research this issue.
Does any one have any idea what might be causing this and how to resolve it?

Many cable systems only talk to the machine that was registered when you signed up (thats why they ask for the MAC addess of your computer) or they want you to pay for a second, third... IP address.
A small (4 port) managed router should resolve your issue of "only one at a time"
The router will act as your local DHCP server and allow multiple machines to access internet (and each other) simultaniously.
On their web site, Linksys provides step-by-step configuration for most major cable systems.

New (Refurb) AE cannot connect to cable modem

I just got a refurb AE today from Apple and everything seems to work except that it cannot connect to m y cable mdoem (sees no connection). I am using the same cable modem and cable that I use for my Airport Extreme (unplugged power) and everything works fine on it, but not in the AE. Is there anything special in the setup? I have tried resetting to factory defaults and starting all over, but to no avail.
Also, does anybody know if I can take this back to an Apple store and trade it for a new unit (not refurb)? Or would I have to ship it back to Apple?
Message was edited by: danny whittington

Nevermind, I got it working finally. I noticed somebody else's post about turning off the cable modem and then turning it back on, and this seemed to fix the issue. I guess when the modem saw a different device (AE) it did not connect to it. Now I have it setup for my trip next week with an iPad and will now go back to my Airport Extreme for home use.

Can I configure a wireless home network with two cable routers (both with separate connections to the same cable company)? Issue is poor signal strength even with multiple Airport Expresses added to the network.

I have a wireless home network consisting of a time capsule, two airport expresses and a cable modem. Even with this configuration I get a very weak signal in much of be condo - the walls, etc. are solid concrete. I want to see if I can add another separately connected cable modem and connect one of the existing airport express to it by Ethernet cable. If so, this would give me two wired hubs and greatly improve signal strength. I do not know if this configuration will in fact work or if I will just wind up with two, separate and unrelateable networks. Unfortunately, there is no way to run any additional Ethernet cable and I doubt simply adding more Airport Express will help. Thanks.

Try Ethernet over Power adapters.. these are very popular for your kind of environment.. being able to make non-wireless link to another area where you can setup a wireless access point.
Airport Express are not great for wireless power.. if you really have issues with wireless strength in a bad environment apple stuff is not the way to go.
The comparison chart here.
http://www.smallnetbuilder.com/lanwan/router-charts/bar/58-2_4-ghz-dn?see=P_F
This is their worst test location you can also see averages.. the latest airport extreme.. is there a long way down.. and that is a much better wireless device than Airport Express.
The Ubiquiti power AP is small cheap and designed for precisely this duty.. useless in an apple wireless network.. you will need to run ethernet or EOP adapters back to the main router.. but if the normal omni directional antennas don't provide enough signal you can get directional ones.. I suspect you can cover your whole apartment with a pair of these and high gain directional antenna.

I am using several Macs running Yosemite. I was recently "upgraded" to Xfinity's new cable modem which can support both 2.5Ghz and 5Ghz networks at the same time. Actually I can connect to the internet over both with a satisfactory bump in speed for

I am using several Macs running Yosemite. I was recently “upgraded” to Xfinity’s new cable modem which can support both 2.5Ghz and 5Ghz networks at the same time. Actually I can connect to the internet over both with a satisfactory bump in speed for the Ghz. However when I connect to the 5Ghz the Time capsule disappears from the Airport Utility and claims to be Not Found. Is there something I have done wrong or just a Yosemite Teething Problem

First restart your mac and try again.
It could be
that the router and the TC are interfering wirelessly with each other.
You can check this by pressing the option key while clicking on the wireless icon on your screen
Open Wireless Diagnostics
enter your user password
Press CMD 4 then Scan
You will see all the wireless channels being used in your location and you can check if they are on the same channel
Make the SSID for the TC simple like MyTC
Set 5Ghz to auto
Update the TC
Try again
Ted

Connecting Two WRT54GS Wireless To A Cable Modem w/ TIVO, PS3, and Wii

Not real great in the networking thing. Upon reading I have found that you can only use WEP on a wireless adapter pluged into a TIVO (series 2 that is christmas gift to wife) to connect it to the internet, and as a concern of having to downgrade my entire network on my main router to WEP I looked for a solution. I read somewhere that if you cat5e from the TIVO into a WRT54GS you can then use the router to send wireless with WPA (or WPA2) to another WRT54GS that is cat5e into the modem. To complicate things I am giving my kids a PS3 and a Wii for christmas and wanted to connect it to the same router as the TIVO. My internet is Charter Comunications cable. The two routers are Versions 5 and 6. The TIVO is remote and I cannot get cat 5e cable to it so I need to use wireless. All distances are ok for wireless. The "main" router that is plugged into the cable modem is a ver.6 and is set in DHCP. All "gifts" are wrapped under the tree so I can't set those components before christmas. I would like to setup the routers to speed things along. I have a laptop (hardwired ) to the second router to set it up. Two other computers and a HP printer are connected to the "main" router. All computers are Windows XP -SP2.
Questions:
1. Can this be done with these components and keep security on the "Main" router maintained?
2. Upon reading these boards it sounds like I should split my system into two seperate routers with the second one passing thru the main router. How would this be done? What are the settings? Reserve addresses for static in the main router to use in the second and run as one system? Remember I am not to good at the network thing... so be complete in the explaination.
3. If I do things as indicated in question 2 will that leave my TIVO, PS3, and Wii open to attack to the internet? Any way to better secure?
4. Any pointers as to how this really should be done would help. Any better ideas in setup??
Thanks.......

Yep, I wanted to connect them wireless but it sounds like I cant without some issues.
Second choice: Cascade-- Connect routers by Cat 5e and make the second one a WEP that has the TIVO, PS3, and the Wii connected wireless to it. The main Router would have the computers and printer connected to it. The main router would be WPA (2) protected for a wireless laptop.
Is the second choice possible??
Should the second router be with static IP's?? Is this the best way to do this with these types of items connected?
I think this will make two wireless systems but if I make the second one a DHCP enabled one then I think it might cause conflicts with a chance of both routers picking the same IP for a connected item. What is the best method for doing this and keeping some type of security??

Why has my native windows 7 Pro-64 network to a windows 7 Pro-64 VM has slowed to a crawl and freezes, after the new Arris cable modem was installed?

Please appreciate the details, so the complete situation can be visualized:
The office network:
New Mac Mini PC running Win 7Pro 64, (in boot camp), networked to an iMac running the same Win 7 Pro 64, VM, UNDER Fusion 7Pro.
To review: My treatment rooms former dell PC/running vista business/ running the server and network versions of my Dental practice mgmt & X-ray capture apps, had no probs WLAN to the front desk iMac running the same PC client dental network apps under the same vista business, & Fusion 4. The dell slowly fried its power supply .
I could not wait to replace it with a Mac mini/ boot camp/ win7 pro 64 bit, as it has to run natively to capture X-rays. The front desk iMac was also upgraded to os10.10.3/ Fusion 7pro/ and its own matching Win7 pro 64bit. The iMac is wired and WLAN connected to a netgear d600 router and a Time Warner Cable modem. The modem then failed and was replaced by an arris modem. As the Arris was configured out of the box, the network ran much slower slowed, as compared to the original modem. BUT- The Vonage 2 line phone system stopped working- no incoming or outgoing voices could be heard after it rang. Then twc remote configured it and the phone now works, but the network iMac slowed to a crawl, and now freezes when accessing the Mac Mini PC dental server to edit or enter data. The Mini perfectly accesses the internet via wifi. It accesses the front desk canon printer by wifi, and can print share they the iMac that is wired to the printer, as well, BUT, the network connection is a spinning pinwheel. The front desk imac easily finds the Mac Mini PC server on the network. It connects easily by entering the servers IPv4 address SHOULD THAT last value change. But if data isn't entered in slow motion, the window and app freezes, and has to be force quit by Task Manager!
Cause:
1. I think TWC switched the cable modem from the default- Non Bridged, to Bridged mode. Could this be the cause?
2. The network setting in fusion, on the iMac is auto detect, a setting that always worked with vista and with the new Win7 system, before TWC installed the new arris modem. 3. Switching to NAT does not work at all is there a different setting to use?
3. Does the Netgear Router have to have a port or pref configured so as not to block the Server.
4. might in need an Access Point (I have an extra netgear wdr3400) ).
5. Do I need an Extender that plugs into the AC LINE?
I hope this info helps.
PS:(some addtl info:
1. File sharing works fine between the minis -Mac and boot camp sides and between the iMacs- Mac and VM sides and between eother side to or from either of the 2 computers! 2. Also either office computer and all of my my home macs , (& my iPad, & iPhone), can access each other instantly and flawlessly, with splash top streamer and jump desktop remote apps, as controller or as client! In fact, the front desk iMac can remote control the mini PC AS IF YOU WERE DIRECTLY ENTERING INFO I TO IT!
SO I think it's either a misconfiguration in the TWC cable modem &/or some additional pref to config in the router? Thanks so much for your help, (been using VM's since VPC1. & Win95 in a iMac, 1999, DV MODEL! (TWC BLAMES VONAGE FOR NOT OPENING SOME PORTS IN THE TELE MODEM. Vonage blames TWC FOR NOTopeningj ITS PORTS IN THE CABLE MODEM, when they meant the ports on the Netgear. They have passed the buck for 6 weeks with not even a guess at what to do. VERY FRUSTRATING! Again, thanks to all!

Okay Saint Steven, I'll bite:
I read your description multiple times, very carefully, and I am still confused. May I suggest the following:
* Follow basic troubleshooting procedures. Isolate each individual problem. Don't try to get everything working at once. Make one change at a time.
* If I read your description correctly, the Netgear D600 (??) Router is the office LAN (not WLAN). Connect each piece on the LAN separately one-by-one, and test each piece individually. Get your LAN and its devices working first. Forget about the Vonage and the Arris Cable modem.
* Next, look at your Internet connection. Again, try each piece separately. Depending on how the original cable modem and the new Arris cable modem are configured, you may also have to adjust the configuration of the Netgear D600 Router.
* Finally, if you are still having problems, try to organize your thoughts and presentation before you post again. List each element in your network. List how each element is configured. Be systematic.
"Arris cable modem" does not help much - some are simple bridges, others are routers, etc.
To answer your questions:
1. I can't tell from your confusing description, but I don't think so. It seems like the problems are associated with the system changes you made (replacing Dell, etc.) and the problems seem to be isolated to the local LAN.
2. Auto detect should work, but it is easy to change and test, as long as you change one thing at a time.
3. No. The Netgear router should allow all communications on the local LAN. Could you have put the "server" in the DMZ?
Note: I could not find a Netgear "D600" model in a web search. Do you mean N600?
4. No. I doubt that you need an additional access point. Based on your description, everything appears to connect to the LAN.
5. No. See 4.
To repeat myself:
* Do careful, systematic troubleshooting.
* Provide carefully written, detailed description of your network and system configurations when you ask for help.
Good luck!

Why are my devices finding two networks with the same name in my house?

I have Verizon FIOS (Actiontech router) connected with an ethernet cable to my Airport Express. Everything works beautifully through all three levels of my house...except... there are seemingly two networks in the house...a 192.X network (I think that is the Actiontech router), and a 10.X network (I think that must be the airport express)...
Here is the problem...
My devices (MACS, i-PADS, wireless printers) sometimes connect to the 192.X network (usually on channel 11) and sometimes they connect to the 10.X network (usually on channel 1). If the computers & i-PADS are not on the same network as the printers, then I can't print because the computer can't find the printer.
With the printers, every time the power goes out it's a crapshoot to see which network they reconnect to...and I have not found a way to manually choose a network since both networks have the same name and password (and I think they have to be set up that way in order for the Airport Express to work properly with the Verizon router.
Any help would be much appreciated.
Thank you.

OK, thanks. Did you see the message I posted right after your previous reply? I'm copying it here. Would choosing option two below, "join a wireless network" vs. "create a wireless network" be similar (or the same) as running in bridge mode? Thanks.
Tried a different MAC in my house using Lion instead of Mavericks and was able to open a version of Airport Utility. I couldn't find the tabs as in your picture; however, I did find a box that says, "This airport express is set up to create a wireless network." Three options are then listed as follows:
1- create a wireless network (the one that is checked)
2- join a wireless network
3- disable wireless and connect to a computer or network using Ethernet
If I choose option two above, would that solve the problem?
Thanks.

Multiple routers/networks on one cable modem

Hello everyone:
I've been reading around on the forum trying to find the answer to this question, but have not found any specific answer that satisfies all my requirements. A more in-depth explanation.
I have 1 IP address via cable modem. I want to configure two wireless routers each with different SSIDs. The main network would be an Apple Time Capsule and would be the parent’s network. I would connect an AppleTV and the second router (Linksys WRT-310N) to the LAN ports and the parents’ phones/tablets and an Airport Express extender wirelessly. The second router would provide a distinct wireless network, have a DVR, network hard drive, and blu-ray player connected to the LAN ports and the kids’ handheld devices and a wifi printer connected wirelessly.
Ideally, both networks would use WPA2 security and the parents’ computers, a Mac and a Win (the Win running Network Magic Pro) could manually switch between networks as necessary.
Can someone please tell me if this is possible? I think it is based on my research, but specific details about how to do it would be appreciated.
EQUIPMENT
Modem: Motorola SurfBoard SB6121
Router 1: Apple Time Capsule
Wireless Extender: Apple Airport Express
Router 2: Linksys WCG-310N

The new modem is configured to only hand out one public IP Address. Nothing you can do but call them and try to get a higher level tech support.
Please remember to Kudo those that help you.
Linksys
Communities Technical Support

Two Routers off One Cable Modem?

Can I run two routers off one cable modem, one a hardwired Windows network and the other an Airport Extreme networking a Powerbook G4 and wireless printer?

No you cannot - unless you pay your cable internet service provider for two public IP addresses.
What I would suggest if you already have the base station but have not yet purchased the router:
- connect the cable modem to the Base Station's WAN port
- buy a 4- or 8-port ethernet switch. Connect to the switch the LAN port of the Base Station, and all of your hardwired PCs
What I would suggest if you already have a router and base station:
- connect the cable modem to the router's WAN port
- connect all the hardwired PCs to the router's LAN ports
- connect the Airport Base Station to one of the router's LAN ports, and configure the Base Station to function as a wireless access point per http://discussions.info.apple.com/webx/.59976caa

Two networks - same cable modem

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