IMac Ethernet - No IP Address

So frustrated... my 10.6.8 imac's ethernet is not functioning. I get the following error:
No IP Address.... Cable Unplugged.
Any recommendations? My Airport is working fine.. but no ethernet.
Dave

Have you tried anything to cure it yourself, such as, new Ethernet cable, different port on the router/switch you connect to, check for damaged pins on the iMac Ethernet socket and as mentioned restart all the devices.
if you find that the Ethernet port is faulty on the iMac you could try one of the USB to Ethernet adapters to save changing the logic board out. I presume with your profile of OS X 10.6.8 that the computer is out of warranty. If your profile is incorrect and the machine is in warranty have Apple check it out after testing the above items I mentioned.

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New 27inch imac ethernet not working!

About to return it to the apple store.
Wi fi rock solid
Ethernet gets IP address
All green lights on
diagnostics says all good
new ethernet cable
but imac refuses to connect to anything via ethernet!
tried router with mac book and ethernet is brilliant and solid
Anyone had this or got any ideas?
Thanks
Gary

Thanks for your quick response. I had another look at the addresses-sorry my mistake they are slightly different
wi fi192.168.0.3
ethernet 192.168.0.2
I have tried turning of wi fi -it made no difference.
I'm running out of ideas.
Gary

IMac accounts sharing an Address Book, without a dot-mac account?

Two Administrator accounts on one iMac, having a single Address Book in common? (Only open in one account at a time is no problem.) In this helpful 3/6/06 post, Paul Wayne addressed this issue. He said:
The easest way to do this is by move /Users -> user_name -> Library -> Application Support -> Address Book folder in the the /Users/Shared/ folder
Then make an alias by dragging the newly moved folder from /Users/Shared to the each of the user's /Users -> user_name -> Library -> Application Support while holding down the option command key.
This made sense to me. As a new convert to Tiger from System 8.6, I'm not going to try anything too adventurous. Having Address Book in both Administrator accounts open a file in
/Users/Shared/Library/Application Support/Address Book/
by way of an alias in each
/Users/UserName/Library/Application Support/Address Book/
So I reset permissions to enable both of the administrator accounts (Alice and Bob) in question to read and write to subdirectories in the /Users/Shared/ folder and did as Paul suggested.
No go. Alice now opens her address book, located in
/Users/Shared/Library/Application Support/Address Book/
But Bob still opens his own address book, notwithstanding an alias for "Address Book" pointing to the folder in Shared at
/Users/Bob/Library/Application Support/Address Book/
I tried removing the folder alias and replacing it with Bob's original "Address Book" folder, then making aliases for each of the files in the Shared "Address Book" folder and putting them in Bob's "Address Book" folder.
But when Bob opens AddressBook, he still sees his original Address Book. Surprisingly (to me), Bob's "Address Book" folder now has only the aliases for the files visible. So either the actual data files are invisible in "Address Book", or the program is calling them from some other location.
This doesn't seem like it should be an unusual desire--two separate accounts on one machine sharing a single address book. Doesn't seem that it should be a tough problem, either--Paul's solution ought to have worked.
If I start up Terminal and use Unix to "ls -al" in the folders in question, will that show that I've induced the Mac to create invisible files or aliases that are trumping my clumsy efforts?
Intel Core Duo iMac Mac OS X (10.4.5)

Hi Dozza,
The good news is YES, sharing an Address Book group(s) is easily done without .Mac
Since you are on an ethernet network, all you need to do is:
1. Enable Sharing thru System Preferences from your "main" computer you wish to transfer data from/with.
2. Drag your AB group(s) or individual cards to the desktop of your main computer - the one you have all the info in... (the cards will convert to vCards automatically.
3. Place those groups or cards in your Drop Box folder which is: Hard Drive>Users>your "Home" folder>Public>Drop Box
4. All networked computers will be able to access your Drop Box folder even if you do not want other info shared.
Of course .Mac is pretty darn handy too!
Good Luck
John

IMac Ethernet Not Working

Out of apparently nowhere, my iMacs Ethernet just stopped working.
I can connect to the Internet via WiFi, getting a correct IP address, starting with 192.
Howver, Ethernet is not working. It is "Connected" with a 169.254.xx.xx address. It has a Subnet Mask of 255.255.0.0. It doesn't have Router, DNS server, or Search Domain labels. As such, it cannot connect to the Internet.
All the other computers in my home have no problem connecting to the Internet via Ethernet. This problem only seems to exist on my iMac. I took my iMac into the local Apple Store, and the employees had no trouble connecting to their Ethernet. I bought and installed. new router, but the problem persists.
At this point, I'm assuming the problem is with my ISP (Comcast) - but what IS the problem, exactly?

Yes, Ive done all the obvious things like that. Ive tried resetting my
location as well, and I've renewed the DHCP lease. Ive reordered WiFi and Ethernet so Ethernet is above WiFi.
Ive fooled around a lot with this, as Ive had the problem for about a week.

Can I get my wife and my phones to synch to the same iMac, but have different address books - when synching we keep ending up with all the contacts on both phones...

Can I synch 2 phones to the same iMac, but have different address books?

If you and your wife have separate user accounts on the Mac, then each of you will have separate libraries to sync. You can them maintain separate address books, calendars, apps, etc.

Ethernet card physical address

Good morning guru,
Is it posible using sql to get the information about
the Ethernet Card Physical Address local computer (network card address) ?
like : 00-0E-A6-37-BA-25
mayble something like : select ecard from dual ?
If no, any idea how can I got it ?
Thank's

Simple answer - no.
Complex answer/response - what on earth for?
On the server side, you have to crack open the physical network packet header to get to the MAC address of sender. And that is not a simplistic thing to do, and outside the scope of PL/SQL and even Java stored procs.
Why? Because you need access to the physical packet - which you do not have. In PL/SQL and Java in Oracle, you're already at a fairly abstract level. With a shared server process, your code do not even deal with the network communication side with the client. That is done with by the dispatcher processes. So even if you could somehow hack the data segment of your physical Oracle process running your PL/SQL or Java code, the socket and packet data are not there to be found.
Which begs the question why do you want to use it? It is pretty meaningless higher up is the OSI stack. And your code is running in topmost layer, layer - the application layer. Layer 6 does not show your layer, the MAC address.
So the reasoning for wanting the MAC address need to be closely re-examined - as the "solution" for that requirement, using the MAC address, is likely a very much flawed solution.

IMac self assigning IP addresses to both Airport and Ethernet, randomly

So, I've seen some others complain about their Macs randomly dropping the internet since around the 10.6.6 update. I've had the same issue. Sometimes it will go days with no problems, other times I have to reboot the iMac multiple times a day because it won't stay connected to the internet.
I finally looked in my network part of my System Preferences to see what that said, and to my shock I found that when the iMac deops from the network (the only thing on the network that drops, cell phones on WiFi are fine, Windows computers are fine, PS3 and Xbox 360 are fine) that it tells me that it has self assigned the IP addresses for the AirPort and/or Ethernet port.
Before I discovered this, my one friend joked it was a user error (PBKAC), but now that I can confirm it is not, I know this to be an OS X problem. Somewhere along the way to the 10.6.6 update, someone at Apple did something to the TCP/IP stack that seems to randomly affect users, and it has not been fixed, since.
Telling the computer to renew the DHCP lease from the router works sometimes, but not all the time. When it doesn't work, then the iMac needs to be rebooted in order to reconnect to the network.
I have a video showing the issue, as well. http://youtu.be/dhncotyiqS0
Apple, you need to fix this problem, even though it appears to not affect all users all the time.

Hello djhalnon. Welcome to the Apple Discussions!
At any rate, while the Netgear had a "LAN IP Setup" screen allowing me to specify device addresses assigned by its DHCP service, I haven't found any such thing in the Airport Utility. Searching the 'Net didn't help much, because what I found doesn't coincide with what I can do in the utility.
The "equivalent" for the AirPort would be to utilize the "Reserve a DHCP IP address" feature in the AirPort Utility.
To do this, select the Manual Setup option in the AirPort Utility, and then:
1. Reserve a DHCP-provided IP address for the host device.
Internet > DHCP tab
o On the DHCP tab, click the "+" (Add) button to enter DHCP Reservations.
o Description: <enter the desired description of the host device>
o Reserve address by: MAC Address
o Click Continue.
o MAC Address: <enter the MAC (what Apple calls Ethernet ID if you are using wired or AirPort ID if wireless) hardware address of the host computer>
o IPv4 Address: <enter the desired IP address>
o Click Done.

IMac to iMac ethernet connection

I am trying to use migration assistant to transfer data from my old (2007) iMac to my new one. I have updated both to OSX 10.9.5 and followed the instructions for migration on each (from old to new). I have connected them with an ethernet cable but each searches for the other with no success. I tried giving each the same IP address but this did not work. What else do I need to do to link them both?

Yes, I realised that this was the case, but using auto assigned was where I started and each iMac was continually searching for the other. There had been an indication that the Ethernet connection was working as I got the message that both could not use the same IP address. My question is, what else do I need to do to get them to find each other?

Wired iMac Ethernet corrupts network

We've had our iMac for about 2 weeks without issue. The iMac uses a wired connection to a Linksys router, and we have about 5 other devices in the house using the wireless connection.
Last night we started having problems using the Wireless for both internal network and Internet applications. After a bit of searching, we determined it was the wired iMac connection. We can connect other wired devices to the router without problem or interference.
I thought it was the router, so I used an older Netgear router that I had available. The iMac will not receive an IP address when wired to the Netgear.
So I disconnected the iMac from the Linksys, and use the AirPort for connectivity without problem.
Any ideas? At this point I think it is hardware related.

If you have your network set up so that the router assigns the IP addresses to each computer on the network, in System Preferences Network pane Ethernet Advanced settings TCP/IP tab, it should be set to Configure +Using DHCP+. That is the default setting, and the network configuration that most people use.
Is that how your network and other computers are currently set up? If not, you may need to adjust the iMac's settings to +fit in+ with what you already have set up.
If that is the current setup, you may want to reset everything. Power off all computers. Power off the router. Turn the router back on and give it a few minutes. Then power on one computer at a time and check that is has joined the network (has Internet access), saving the iMac for last. Power on the iMac and see if it still disrupts the connection of the other computers.

IMac + ethernet switch + windows laptop

I'm trying to use my windows laptop and my imac on the same ethernet switch. This was working, but now I've added a network connected printer.
The printer and the iMac are working fine, but my Dell laptop keeps losing its ability to connect to the network. Dell says to restart the cable modem so it gets a new IP address. Well, doing this once is OK, but this seems to need to happen all the time.
Please confirm, using these 3 devices on an ethernet switch should be fine right?

Tell me more please? What are you referring to as an ethernet switch? Is this a router, an ethernet hub? Is this connected to your modem? What is the printer connected to, the switch or a computer?

IMac Ethernet: Cable YES but DSL NO, any help?

Looking for help on internet connection problems with new iMac. I've posted this issue under a topic that is now marked as solved, however I do not see the solution.
I have a new 17" iMac intel. It hasn't been opened so it has the 512 MB RAM it came with, no other alterations, only added one application that's required for the business where this will operate.
I was able to easily and successfully connect to the internet using a high-speed cable modem (Rogers in Canada).
The computer is being used in a location where cable is not an option, so high speed DSL (Bell Canada) was chosen. I have not been able to successfully connect to the internet with this service.
Here's the steps taken:
1. Hooked up Speedstream 5200 modem as directed, followed set-up steps for TCP/IP as directed. Tried to connect. Connection times out, says there is no connection. When the system or modem is rebooted the lights on the modem suggest everything is working fine, according to the manual. There is also a green 'light' next to Built-in Ethernet in Network Preferences. This 'light' only goes red after trying to connect, and the ENET light also goes out on the Modem.
2. Spent a fair amount of time on the phone with Bell. Tried connecting using PPPoE without success. Tried to "configure the modem" by connecting to 192.168.2.1 but could not. Tried connecting without a splitter, made sure that phones on the line had the filter applied, all the standard issue steps from Bell. They could only suggest it was a Mac hardware problem. They were not swayed by the fact that I could easily connect using cable modem. Their Mac support is minimal at best.
3. I've tried deleting the Built-in Ethernet as suggested elsewhere so it is 'rebuilt'. I've installed 10.4.6 Combo update (twice) and it hasn't helped. I've pinged 127.0.0.1 (as suggested elsewhere) without packet loss which I've read likely suggests it isn't the systems ethernet port.
I've not applied the recent firmware update as I don't want to use windoze on this machine, but will apply it if it'll help in some way.
Can anyone suggest the next step. Am I missing something here? I've been troubleshooting through various forums looking at my options, thus some of the steps above. All the usual maintenance steps are taken (repair permissions, remove other devices, etc.).
I've been able to successfully set up the internet on many a Mac system since OS 7, but I'm no networking genius, things just worked as they were supposed to.
Any hints, tips, resources, links or direction would be helpful.

are you getting an ip when set to using dhcp? if you are supposed to configure your modem using dhcp, make sure the "connect using pppoe" option on the pppoe tab is unchecked (make sure you have "show" set to built in ethernet) you should be able to type in the gateway ip address listed into a web browser to access the setup screen. then go from there. if you dont see one you might try clicking the renew dhcp lease button. if still nothing you might reset the modem (usually hold the reset button until lights flash) then check again
on the other hand if your isp has the modem setup in "bridged mode" there may be no ip to access, then your stuck trying to use the macs pppoe client to connect to the isp thru the virtual pipe thats supposed to be there.
imac g5 Mac OS X (10.4.3) 1.8 17"

When sending email messages from iPhone,iMac, or iPad, email address automatically added to my contacts list on iPhone. How do I trace this down and stop this auto addition of email addresses to my contacts list?

I am not sure what generates the email address as a contact, be it the iPhone or iMac. I use iCloud to sync up my contacts/address book. This appears to happen when I am using Mac Mail on my iMac, but I have no clue where to begin to look to stop this auto addition. I have looked in Mail preferences on my iMac and in my iPhone settings, but have found nothing that "automatically add email address to contacts list".
Can anyone provide guidance? Web search has been fruitless ( I am guessing I am not using the right key words for my search).

Hey jpoolewarren!
You can delete contacts by following the instructions in this link:
Contacts at a glance - iPhone
http://help.apple.com/iphone/7/#/iph3e0ca2db
Delete a contact. Go to the contact’s card, then tap Edit. Scroll down, then tap Delete Contact.
Thanks for being a part of the Apple Support Communities!
Regards,
Braden

Ethernet connected, IP Address, yet not loading Internet

G4 dual 1.25 has been acting funny for a a few weeks.
Symptoms:
1) Even though network prefs show ethernet connnected, and a 192... address nothing will loaded in Safari. Other macs load fine so network is good...
2) No computer can access this unit through network and vice versa
3) Home sharing setup cannot access iTunes to login
4) On shutdown I quit iTunes then hit shut down. Shutdown hangs and says iTunes refused to quit
Permissions repair run numerous times but no effect
Besides running console to find problem, what is the best repair method-
archive & install or ?
Thanks in advance
Enio

Reinstalling is way down the list of things to do - probably the last option as far as I'm concerned. There's also no guarantee it'll fix the problem if the problem is preference-related and you copy back the (broken) preferences.
You need to do a little more troubleshooting before you call it quits.
Start off with /Applications/Utilities/Network Utility
Can you ping your router address (as set in System Preferences -> Network -> (interface) -> Advanced -> TCP/IP)
If not, is this the same router address used by other systems on the LAN or is it different?
In addition, can you ping other devices on the LAN? Ping is a basic network test that should always be near the top of your troubleshooting.
After that, I'd check the various logs on the system - many problems will announce themselves there, and if you're not reading the logs you're wasting a lot of time trying to work out what's wrong.

Ethernet cable wont fit into imacs ethernet port.

Hello.
I feel like an idiot.
I have build pc's and have my own network at home.
And for some reason i cant fit my ethernet cable into the imac.
I just bought this imac so its the new g5 w/isight.
The plug only goes half way in and then stops.
I have tried all my cables in the house.
Even the pc and all my networked computers.
Can someone help me.
I love my new imac but i want to hook the new imac to the network.
Thanks
Al

There's always the chance that you could be trying to
plug into the modem port. It's easy to do, as they're
pretty similar in shape. The ethernet port is
typically distinguishable by being a bit larger than
the modem port, though they are rather too similar!
I would have suggested that as well, however this user posted that he has the new iMac with built-in iSight camera. This model does not have a built-in modem.
Additionally, the user claimed that the connector would go in about half-way. If it was a RJ-11 port, an RJ-45 connector would never get that far

Imac-ethernet-airport express-2wire gateway

I bought an imac g4, 17" 1.25GHz. I am trying to connect to a ATT DSL 2Wire gateway. The iMac's wireless was via a hawking usb adaptor. That worked clunky, and when I tried to update the drivers it started crashing the system. I uninstalled the drivers and now the stick is non functional.
I went to the genius bar and asked what to do. Answer: buy a used airport extreme card on ebay. I did that and installed it. The reception was very weak, and I could only connect if I was within 4 feet of the gateway.
I went back to the genius bar. The genius put a different airport extreme card in the iMac and verified the weak reception; genius says the antenna doesn't work. I asked him what to do. He said third party repair shop to fix the antenna, or connect with airport express.
I have an airport express that I use for airtunes, so I decided to try that. I have it configured to Join A Wireless Network and to Allow Ethernet Clients. I had previously connected my Viera TV this way, but it was a pretty fragile connection.
The iMac says that ethernet is working but it will not connect to the gateway. (i.e, in network assistant the first button is green but the second is yellow.)
Any help would be appreciated.

1. Is it correct to configure Airport Express to Join Another Network and Allow Ethernet Clients?
Yes
2. If so, what do I have to do to get the Imac to connect via the ethernet connection? (on 10.4.11)
Verify that you have a good ethernet cable by testing it. Then verify that the ethernet card is working correctly on the iMac. You'll need to temporarily connect the iMac directly to one of the LAN <-> ports on the 2Wire router. If you can connect to the Internet, you know the ethernet card is good on the iMac.
Then verify that the ethernet port is working on the AirPort Express by testing it with another computer's ethernet port. Turn off the wireless on the computer and verify that you can connect. If you can't, power cycle the entire network as follows:
Power everything down, order is not important
Power up the modem first and let it run a few moments, then start the 2Wire router and let it run a few moments, then the AirPort Express the same way and finally your computers one at a time the same way
Once you have verified that the ethernet port is working on the AirPort Express and the other computer, try connecting it to the iMac. Power cycle as above if necessary.
3. Is it possible to fix the airport antenna, or is it a hopelessly expensive repair?
Assuming that the antenna is at fault, it's almost always a very simple connector that has come loose or wire that needs re-soldering. This takes a few seconds to fix. But it probably takes an hour to disassemble the computer first, then assemble it after the repair. It's time intensive, so you might want to get an estimate first. If no problem is found, you'll still pay the same labor rate for the "repair".
Message was edited by: Bob Timmons

IMac Ethernet - No IP Address

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