Getting an older iMac to use cable modem

I have a PowerBook G4 and a MacBook that are both using the AirPort Express wireless network that I have set up in my home. I have a cable modem and that modem has a ethernet cable that goes from the back of the modem and plugs into my AirPort Express. The back of the cable modem also has a USB port on it as well. Now, I also have a iMac G3 (with a translucent green and clear plastic case) that I am wanting to get online with the cable modem. The iMac G3 is running Mac OS X 10.1.4 with 64MB of RAM. I have a USB cable that can connect from the cable modem and then to that iMac G3. I am trying to find a way to connect the iMac to the cable modem WITHOUT having to buy anything and WITHOUT having to mess up my already setup wireless network. If someone can offer up some tips on how to accomplish this, I would appreciate it. If I need to change how my wireless network is set up a bit, that is fine. Just want to find a way to get all 3 computers on my network while still allowing the 2 laptops to remain on a wireless network. Thanks for any help in advance.

Hey again, Roger. So, here's the scoop. I got my Linksys router back. I unplugged my cable modem for starters. Then, I unplugged the ethernet cable from the modem that was coming from my Airport Express. I then plugged in a separate ethernet cable into the back of the modem and the other end into the WAN port on my Linksys router. I then took another ethernet cable and plugged one end into the iMac and the other end into an open LAN port on the router. I then plugged my cable modem back in. (It has no "on" or "off" switch) I then plugged the routers power cord into the back of it and the other end into a power strip. I checked the Network settings on the iMac to make sure they were all correct. I opened Internet Explorer (the only browser on the iMac) and I got an error of "The specified server cannot be found.". I found this a bit odd since I had everything connected correctly and the settings correct. Then, I tried restarting the iMac thinking that may do it. It didn't do anything. Then, just for kicks to see what would happen, I pushed the "reset" button on the back of the Linksys router and held that for a couple seconds. After releasing it, the router restarted and the lights were flashing on it again. Then I went and checked the settings again for the iMac and they were still correct. Then I typed in that IP address http://192.168.1.1/ and it asked for a password. I typed in that password and it brought up the settings for the router. I made sure they were all correct according to what you told me. I then tried going to http://www.apple.com/ to see if it would work yet. And this time it did. It connected just fine. I read in the manual for the router and it tells you to hit that reset button on the back after setting everything up. So, I got the iMac online just fine and dandy now. And everything should be working great, right?? Well, its not. Here's my problem. The iMac goes online just fine. I set the Airport Express to Bridge Mode just like you said. I checked the settings on both the MacBook and the PowerBook G4 to make sure they were right. I tried opening a website on both of the laptops and neither one of them wanted to connect. They could not find the Airport Express. Now, I am NOT saying what you told me is wrong. But what I am saying is this. I must have missed another setting or something somewhere that makes this work the way its supposed to. What else do I need to do in order for the laptops to find the Airport Express? I DID connect the ethernet cable coming from the Airport Express into an open LAN port on the router. So, I know that isn't the issue. Ha ha. There must be just 1 small thing I am missing and I need to know what it is. What are your thoughts?? Thanks.

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Thinking about getting a new iMac to use as the main computer. Has anyone done this? What is your experience and recommendations?

We have a 2009 MBP, 2010 MBP, 2011 MBA, an IPAD 2, and several ipods. Currently, my 2009 MBP is the main computer, holding all the music and pictures. This has used up the majority of the available storage and definitely slows it down some. I do back up the full computer to a backup drive and also remove the large movie files to another external drive. I'm thinking about getting a new iMac to use as the main computer. Has anyone done this? What is your experience and recommendations?
I look forward to all responses.
Thanks,
Brad

Thanks for your response. I look forward to hopefully learning something new here.
A good share of my music was added via my CDs, but now everything is added via itunes and occasionally amazon. Almost all my pictures and video are added through my cameras via iphoto although I have added some with the 'add image to iphoto library' function also.

Trying to connect iBook to internet via Airport, iMac G5, and cable modem

The iBook says it's connected to the G5's local Airport network, but Safari says it's not connected to the internet. I must be missing a setup step, but have no idea what.
This is my first use of Airport other than using the iBook at Wi-Fi spots.
Any suggestions? Please and thank you!
iBook G3 Mac OS X (10.3.9) iMac G5, OS 10.4.8

Do I need an Air Port Base station or a router? After I set up everything on my mac mini, what steps do I need to follow on the iBook to get Internet access?
The AirPort base station is a router. You are not limited to AirPort base stations as non-Apple 802.11g routers (like those from Belkin, D-Link, or Linksys) will work just as well. Using a router, your network configuration would be something like the following:
Cable modem > (Ethernet cable) > [WAN] router > (wireless) > wireless computers.
The set up for both computers, to access the router, would basically be the same.
To setup AirPort for High-Speed Cable Internet connectivity:
System Preferences > Network > Show > Network Port Configurations
- Verify that an AirPort option exists. If it does not, click "New" to create one. (Note: If you are unable to create an AirPort configuration, the AirPort card in your computer either doesn't exist or it is not recognized.)
- Verify that AirPort is "On" (checked)
- Verify that AirPort is at the top of the list. If it isn't, you can drag it to the top.
Systems Preferences > Network > Show > AirPort
AirPort tab
- By default, join: Automatic
TCP/IP tab
- Configure IPv4: Using DHCP
- Configure IPv6: Automatically or Off
Proxies tab
- Configure Proxies: Manually
- Select a proxy server to configure: <All proxies should be unchecked unless you specifically require a proxy for Internet access.>
- Exclude simple hostnames (unchecked)
- Bypass proxy settings for these Hosts & Domains: <leave blank>
- Use Passive FTP Mode (PASV) (checked)

Connecting Help using Cable Modem

I am trying to connect to the internet using a cable modem. It works fine on my PC but when I try to plug it in to my Macbook, I can't connect. First off I figured I could just plug it in and hit connect, or it would connect automatically. Because the whole reason I got a mac was because of the "easy-ness" surrounding them. So can anyone guide me to somehow connect.

The problem likely is not your Mac but your cable modem.
Most cable modems, for some unknown reason, lock themselves to the first device they see. This means that if your PC is the first device to use it, then only the PC can use it - it won't talk to the Mac at all.
The first solution is simple - power cycle the modem. This resets the lock so the Mac can use it (as long a the Mac is the first device), but then you have the same situation with the PC.
The better solution is to get a NAT router that can take the connection from the cable modem and share it between both Mac and PC simultaneously. As far as the cable modem is concerned, it only sees the router and the lock does not matter. Numerous vendors make numerous products that will fill this requirement.

Can't Get Legit IP Address From My Cable Modem

I have narrowed down my problem.
I cannot coax a legit IP address from my Charter cable modem. I'm using AirPort Admin Utility to no avail.
Everything else in the system works perfectly...I have no problem networking between computers, or tapping into a different wireless system.
The problem is getting an IP address that works. I have tried, one at a time, an AirPort Express, AirPort Snow and, finally, an AirPort Graphite. None could get the real IP happening.
Of course, Charter claims "software problem". Maybe it is, but I certainly don't trust them!

hi! Have you Physically powered off the Cable Modem and powered it back on? Connect your Cable Modem's network cable to the WAN port of your Airport. Unplug the power to both the Cable Modem and the Airport Base Station.
Plug the Power Chord into the Cable modem first, then the Power Chord to the Airport Base Station.
See if that helps,
AL

EA4500 Won't get a DHCP WAN address from Cable Modem

I have an EA 4500 that I used to replace a bad WRT45 (or something like that). We have an ADT camera system that allows you to view the cameras locally and remotely. All I have to do is set a static internal address on the DVR and the public IP on the router in the application. I duplicated the setting in the old router and everything was running smoothly. However, the speed test result I was getting from the router and speedtest.net were not even close to what we were paying for (wireless and wired. But it was functional.
I called Comcast and they said we needed a Docsis 3 modem. So, I went to the Comcast office and they traded out my modem for a docsis 3. Hooked it up and everything was working again. Speeds were better but not really up to par. Hooked my laptop directly into the new modem and I was getting speeds off the charts. Frustrated, I called Comcast, they said the modem needed to be put in Bridge mode. Then the EA4500 wouldn't get a DHCP WAN adress. They took it out of bridge mode. Same result.
They sent a tech out (Mind you I've been a Network Engineer for almost 20 yrs) and he tells me they gave me the wrong modem (I wasn't there either, roommate let him in). He replaced the modem with a new all inclusive router/switch/wifi modem. He then proceeds to setup a whole new network, which of course , except the laptops that connected, my devices don't see ( printers, cameras, dvr, etc). Then, this baffles me... he did a factory reset on my EA4500. So now there are 2 seperate networks one with slow Internet and one without WAAN services.
After all this, my EA4500 still will not get a WAN address when plugged into the new modem. I would just use their new modem but to make any config changesto it, something as simple as changing the SSID name or the password, you have to call them. They won't give you access to the admin page.
Anyone have any ideas why my EA4500 won't get a WAN address? Oh, btw, I did do a MAC address clone on the EA4500 while connected to the modem and it DID get the address, but the speeds were dismal, not even 1mb up or down.

@stix180
There is a need to reset and reconfigure the EA4500 router to work with the new modem. There are certain configurations on the router that will make it work for a particular modem, and this might be causing the issue. Cable modem authenticates end users through username and password but there are cable modem/router as well in which the IP address are on the same range with the default IP address of the router. Please try to check the IP address of the computer wired directly to your modem, it should not be on the same IP address range with the EA4500 router since it will cause IP address conflict. You can change the default IP address of your router from 192.168.1.1 to 10.10.10.1. Please try to make sure that your router also has the latest firmware version installed. And it would help if you do port forwarding on the router for your camera and DVRs to resolve NAT issues.

I have 3.0 but need an older version to work with Kurzweil KESIReader, how do I get an older version to use for schoolwork?

I am disabled and need to use Kurzweil to read to me, this requires an older version than 3.0 to work with their KESIReader to read the web. How can I get an older version that will work with my other program?

As long as you understand this leaves you vulnerable to multiple known exploits:
ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/2.0.0.20/win32/en-US/Firefox%20Setup%202.0.0.20.exe

Using cable modem with blu-ray player

I just had FiOS installed. I have a Samsung blu-ray player that's too far away such that wi-fi is not reliable.
Can I use a cable modem to gain access hard-wired? Since the STB has an IP address I take it I should be able to split the coax, feed it to a modem and then on to my blu-ray payer's CAT-5 port.
If this is possible what modems are compatible?
Thanks in advance for any assistance.

Your idea is sound, but instead of a cable modem what you need is a "Moca Adaptor". Something like THIS* . And when you split the cable, make sure that you use a high bandwidth splitter. Something like THIS* And then all should be good.
*Just examples
====================================================================================
Error exists between keyboard and chair.

Why am I getting 2 IP addresses from the cable modem?

I recently renewed my IP address for my cable modem (by booting into Windows and doing the ipconfig thing). It did this successfully and assigned me a new static IP.
However back in OS X I am now getting two IP addresses depending on whether I connect by ethernet or Airport. When I connect my MacBook straight to the cable modem by ethernet it gives me the new IP address. However when I connect the Airport Extreme Base Station to the cable modem and do all the relevant restarting, it insists I still have the old IP address. This can't be right. Is it an errant preference hanging about in the Base Station? I have tried restoring it to default and setting up from scratch but it persists.
I know the difference between public and distributed addresses... the two I'm talking about are the public kind (e.g. 82.114.223.43 etc)

What do you mean by "old" and "new" IP addresses? What TYPE of IP addresses are you talking about? Specific numbers for example?
In general, the typical cable modem set up should work as follows: your ISP will assign an IP address to your cable modem. This IP address can be permanently fixed (static) or occasionally change (dynamic) - whether you get a static or dynamic IP address depends on your ISP. This IP address is considered your "public" IP address.
What you plug in directly after the cable modem will take on this IP address, since the cable modem merely passes on the IP address info (and serves no routing functions). So, if you plug in your MacBook directly to the modem, your MacBook will take on the IP address that your cable modem passes through, as assigned by your ISP; only your MacBook will have internet access.
On the other hand, if you plug in to the modem a router, such as Airport Extreme Base Station, the router will be assigned the "public" IP address received from the cable modem on its WAN (wide area network) side, i.e. the "side" that interfaces with the public Internet. When your router is set up to SHARE this one public IP address with multiple computers/clients, it has to create a private sub-network, otherwise known as the LAN (local area network). Whether you plug computers in via ethernet to the router, or connect wirelessly to the router (or even both!), your router will create IP addresses for each of its LAN clients so that it can identify everyone. As long as the client has a different hardware MAC address, the router will assign it an unique IP address. (That's why you had 2 IP addresses for your MacBook - one for the ethernet connection, and the other for the Airport connection - each network interface having a different MAC address, and thus receiving a different IP address from the router.)
Your router will always maintain its WAN IP address, as long as your ISP gives you that IP address (via your cable modem). However your MacBook, Windows and other clients may be assigned different LAN IP addresses depending on how you configured your router's DHCP server settings. The LAN clients in the context of your subnet would NOT be assigned the router's public WAN IP address when the router is set up to share that connection.
If you understand the whole WAN v. LAN IP addressing thing, but you're not getting the results you expect, try powering off EVERY single piece of equipment on your network. Wait several minutes so that everything is cleared from the equipments' memory. Then power on and wait until the equipment is in ready state, in this sequence: 1-cable modem..., 2-main router (AEBS)..., 3-remote bases/bridges (if any)..., 4-computers and other client devices.

Intermittent dropout of internet connection using cable modem

Hello all.
My connection drops out a few times a day. Only for a few seconds, but I suspect it caused problems with downloading a playlist from iTunes today, which is particularly frustrating; and it's unnerving at the best of times. My ISP is not very helpful about this. I know that one possibility is that I'm getting interference from other signals, but I don't know what I can do about that, so I'm wondering if anyone has any suggestions about something I can do from the Mac.
To clarify:
The message I get from my email client (Entourage) is CONNECTION TO THE SERVER FAILED OR WAS DROPPED.
My modem is a D-Link, connected through an ethernet cable.
Here's hoping! Thanks in advance,
Roger

I think your problem is either the ISP or your modem. Try resetting the modem by shutting everything down; modem and Mac for two minutes. Then power up the modem, wait two minutes, then power up the Mac. If the problem persists have your ISP give you a new modem (if renting it from them) or purchase a new one.

Can I have cable modem connected to iMac but shared with Airport Express?

I have my internet access to my iMac through a cable modem wired to the Mac. I use the Airport Express to play music from the Mac wirelessly to my stereo. Can I then share the internet access I have on the iMac through the AX without actually connecting the modem to the AX? The wiring is easier to get to the Mac than it would be to get wiring from the cable modem to the Airport Express at the stereo. I want to be able to access the internet wirelessly from a PC laptop that I also have.
Thanks

Yes, you can do that. Using the AirPort Utility, you would set the AirPort Express up to create a wireless network giving it whatever name you want. When it gives you an error message that nothing is connected over ethernet, you can click the button to ignore that message and it will perform as you are requesting.
Note that if your internet connection stops working when you do this, then you may need to change your network port priority so ethernet is higher than AirPort.
Mac OS X 10.5 Help: Changing the priority of your network connections
http://docs.info.apple.com/article.html?path=Mac/10.5/en/8853.html

HT4259 Wanting to extend WiFi from Cable Modem WiFi using Time Capsule

Hello,
I'm trying to extend my existing WiFi in my house that is hosted by my Cable Modem by placing my Time Capsule in my garage (so not connecting time capsule to cable modem using ethernet). I get a WiFi signal from my cable modem in my garage, so can I somehow add my Time Capsule to the existing network to extend it out there? Or does this configuration require I connect it using ethernet?
Thanks,
Jeff

Apple designed the Time Capsule and their other routers to only wirelessly extend the signal from another Apple router....an AirPort Express, AirPort Extreme or another Time Capsule......so the chances that the Time Capsule could extend the wireless network from your cable modem/router are just slightly above zero.
You should plan to connect the Time Capsule using a wired Ethernet connection.
If you cannot run the Ethernet cable.....then a pair of Ethernet powerline adapters might be able to send the signal over the existing AC power lines in your home and garage.

Motorola SB4200E Cable modem and AEBS no Internet connection

Hello
I've bought the new AEBS from an Apple Store in the U.S. Got back home in France thinking it's gonna be an easy ride setting up my new faster and longer range capable wireless network. After all that's what Apple says: "easy setup ... in most cases ". After ten hours trying different settings, no way to get an Internet connection !
The AEBS distributes IPs to the connected clients but cannot get an Internet address from the cable modem.
My configuration :
Motorola cable modem (SB4200E) : configured as DHCP server
Client computers:
iMac Core Duo connected to the AEBS via Ethernet
Macbook Pro Core 2 Duo wirelessly connected to AEBS
MacPro
AEBS:
Wireless Security : WPA2 Personal
Radio mode 802.11n only (5 Ghz)
Channel : Automatic
No Access control
I've tried to reboot, reset, ... the cable modem without success.
Oh forgot to say that my old 54g Netgear router is able to reach my MacPro in the bedroom where the AEBS is no show ! (Twice the range ???) and took me 30 seconds to configure.
Up until now AEBS has only been dissapointment and frustration.
Thanks for any help.

I ended up using my new AEBS in bridge mode and keep my "old" Netgear 54g for Internet connection.
Some pros though: I got a 10 MB/sec transfert rate between my wireless Macbook Pro and my wired iMac both connected to the AEBS.
Some cons: range is far from what I dreamt of (lesser range than the Netgear 54g at the same location in the room)
My HP Laserjet 1020 Printer sometimes shows up in the "Printers pane" and suddenly disappears and even when it's there, printing doesn't work !
Might come from the driver though as this printer has no official driver available for OS X (I use the 1022 driver instead)
Welcome to Apple world !
Don't misunderstand my words here, I like Apple products very much, I got three Intel Macs at home, but being an Apple product doesn't ALWAYS go with plug and play. A few software upgrades might make this AEBS a very good product though.
Macbook Pro Mac OS X (10.4.8)

Cable Modem Termination Systems (CMTS): Architecture, Configuration, and Troubleshooting

With Eric Bautista
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to get an overview of the Cisco Cable Modem Termination System (CMTS) platforms and the uBR product family.
Eric Bautista is a customer support engineer at the Cisco Technical Assistance Center (TAC.) He is responsible for supporting the Cisco uBR CMTS platforms. He has 3.5 years of experience in cable technology. Previous to his current role, Bautista supported Cisco WAN and optical technologies, including QoS and SONET/SDH.
Remember to use the rating system to let Eric know if you have received an adequate response.
Eric might not be able to answer each question due to the volume expected during this event.
Remember that you can continue the conversation on the Service Provider sub-community discussion forum shortly after the event. This event lasts through September 21, 2012. Visit this forum often to view responses to your questions and the questions of other community members.
Webcast Related links:
Slides
Webcast Recording video
FAQ from live webcast

Only the uBR10k CMTS platform supports the SIP and SPA modules.
The SIP needs to be installed in Slots 1, 2, 3, or 4 of the Cisco uBR10k router (referred to as WAN slots).
The SPA's would then be installed into the SIP.
The various SPA's available are:
Cisco Wideband SPA - For Wideband / M-CMTS solutions.
1-Port 10-Gigabit Ethernet Shared Port Adapter - For network connectivity
5-Port Gigabit Ethernet Shared Port Adapter - For network connectivity
Here is an excerpt from the Cisco uBR10012 Universal Broadband Router SIP and SPA Software Configuration Guide:
http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/configuration/ubr10012/12.3_23_bc/sipsp_d3.html
SPA Interface Processors (SIP)
A SIP is a carrier card that inserts into a router slot like a line card. It provides no network connectivity on its own.
A SIP contains one or more bays (subslots), which are used to house one or more SPAs. The SPA provides interface ports for network connectivity.
During normal operation the SIP should reside in the router fully populated either with functional SPAs in all bays, or with a blank filler plate (SPA-BLANK=) inserted in all empty bays.
SIPs support online insertion and removal (OIR) with SPAs inserted in their bays. SPAs also support OIR and can be inserted or removed independently from the SIP.
Shared Port Adapters (SPA)
A SPA is a modular type of port adapter that inserts into a bay of a compatible SIP carrier card to provide network connectivity and increased interface port density. A SIP can hold one or more SPAs, depending on the SIP type.
SPAs are available in various types. The Cisco Wideband SPA is a single-wide, half-height SPA. Figure 2-1 shows how bays are numbered on the Cisco Wideband SIP.

Slow Cable Modems - Everyone Please Read

I am a Broadcom employee. Broadcom makes cable modem chipsets. Some of these chipsets have a slight design flaw. I am not at liberty to divulge any technical details. However, I can tell you that using a cable modem containing one of these chipsets with your Mac will result in slow internet speeds. Apple is not at fault. I'm sorry to say that fixing these design flaws, which only affect Mac users is not a priority at this time.
I am a Mac user myself and am just as frustrated as you are with incompatible products. This is why I am coming forward and informing you of this problem with our products. Our chipsets are used in almost all of the most popular cable modems. I am including a partial list of the most recent and popular cable modems that use our chipsets which have this problem. I am unable to find any information about older and less popular cable modems. Please understand that I can not and will not divulge any more information. Thank you.
All Linksys Cable Modems
All Motorola Cable Modems except for the SB5120
All Scientific Atlanta Cable Modems

Maybe Broadcom can answer the question as to why the Cable modems are slower with Macs with cable modems that do not have TurboDOX.
I have spent hours on numerous forums reading many users complaints and many users solutions from changing DNS to using certain modems.
What I have found is this. All and EVERY cable modem that people have references as working at full speeds on a Mac had 1 thing in common. This 1 this is TurboDOX. I have just completed about four locations where the Macs were slow with Comcast Cable modems. The latest being today with a new installation with a new SB5101 modem. I had the client go and buy a new SB5120 instead. The speed with the 5101 was 2-3Mbps and the speed with the 5120 was 18Mbps!!! yes, 18.
So the question is Why does TurboDOX make a difference with the Mac and not the PC????
Also, another thing to note is that some routers cap the WAN to LAN interface at 6Mbps. For example, the COMSUMER grade Netgear routers (usually the silver plastic ones) are capped at 6, however the Business class routers have varying WAN to LAN speeds ranging from 15Mbps to over 50Mbps.
Our setups for residential clients include either the Netgear FVS114P or the FWG114P VPN Firewall Routers. I have had no issues with Macs being slow with either of these routers and a Motorola SB5120.
FWIW.
And about the Design Flaw theory, Why did this speed issue just start appearing recently? I saw a site test fine at 6Mbps when it first was installed then recently when we went back to do some work find it testing between 1-3Mbps. Just Odd.

Getting an older iMac to use cable modem

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