Activate Airport on Disconnecting from Ethernet

Hey, I have a computer I use as a server, so I have it by default plugged into the Ethernet, with Airport Off (so that it uses the ethernet network). But I need to remote into it from off the network, and if it gets accidently unplugged, airport will be off. Is there a way to activate the airport in the event of the deactivation of Ethernet?
Sorry if this is the wrong section

You would have to be in front of the computer to re-activate AirPort. Seeing as how you are using a Mac mini, it should stay stationary for the most part, so there will probably be no need to work about the ethernet coming unplugged. If you have it plugged into ethernet via your router, I believe you can still access the computer remotely. I sometimes connect my MacBook Pro to my ethernet connection and I can still reach it form my iPad. If I may I ask, why are you using ethernet with a Mac mini?

Similar Messages

MBP Airport consistently disconnecting from the Web, but not the network

My MacBook Pro Airport has been cutting in and out - or at least the Web access has - when I use it in combination with a DLink router. The local wireless network connection always seems to stay connected (or at least it says it's connected), but I can't access the Web. It has shown these symptoms when used in combination with other routers too, but only when I use it with the DLink first and then move to another network.
I can sometimes fix the problem by a combination of restarting OS X and resetting the PRAM, and restarting the router. However, this doesn't always fix the problem, and even if it did, I'd probably be doing it at least once a day with the current frequency of disconnections. So I'd like to get to the route of the problem.
An ethernet connection to the DLink router always works without a hitch.
Does anyone have any suggestions or any knowledge that might help resolve this?

Just remembered I have the 'self assigned IP' error too. There seems to be a fair few posts about this issue. I haven't found a definitive fix yet, but these posts might hold some clues;
http://discussions.apple.com/thread.jspa?messageID=6710925&#6710925
http://discussions.apple.com/thread.jspa?messageID=6708778&#6708778
The second post suggests applying the 'Disconnect from wireless network when logging out', which I've applied, because I've noticed that I often see the problem when I put my MBP to sleep.
p.s. Last year I quick-fixed this issue by attaching a Buffalo wireless router to the network as an extension and connecting to that instead of the Dlink. But I just gave the Buffalo to someone, having forgotten about the issues with connecting to the DLink.

Airport Express disconnects from LAN overnight

I have set up a brand-new Airport Express (v. 7.6.4) recently. The AP Express is connected via the Ethernet 1 port to a Power Mac running OSX 10.9.5 (Mavericks). The AP Express is in "Join a wireless network" mode, and it connects to a LAN consisting of a cable modem/router, a "smart TV," a printer, and a MacBook.
Most of the time, all of this works fine, and the Power Mac gets a nice fast wireless Internet connection, which is the main objective of having an AP Express. (I'd rather use a direct Ethernet connection between the Mac and cable modem, but that would require snaking a long ugly cable thru my living room somehow.)
However, once or more per day, the AP Express gets disconnected from the host Mac (and the network) The symptom (sometimes) is that AirPort Utility reports that "no configured Airport base station has been found." Another symptom (sometimes) is that the AP Express is visible, but is reported to have a "self-assigned" IP address. It's SUPPOSED to be getting its IP address via DNS, and if it can't do so, no Internet connection...
This **seems** to happen when there is no traffic between the host Mac and the AP Express - most typically, overnight. I don't know of any "sleep" mode on the AirPort... ?
Sometimes, I can get the connection back up by tweaking a harmless parameter in AP Utility and forcing it to "update" itself. In the worst case, I have to power down the AP Express and reconfigure the whole thing.
AFAICS, when this happens on the AP Express, the other devices are talking nicely to the cable modem.
At this point I'm at a total loss.... I thought that this would be a very simple installation, it's very disappointing to have to in effect "reinstall" the AP Express every morning...
thx -- John

I phoned Apple Care and brought the AirPort to the Apple Store

CRIO disconnects from Ethernet network and stops responding to pings

We are running a cRIO application that periodically disconnects from the Ethernet network even though the VI continues to run on the cRIO.
The application has two parallel loops. One loop reads data from the FPGA and writes it to a RT FIFO. The second loop opens a TCP connection to a remote host, reads data from the RT FIFO, and transmits the data to the remote host. We have instrumented each loop to send messages to the serial port that indicate their status. When the cRIO disconnects, both loops continue to send their status messages to the serial port. The first loop happily continues reading data from the FPGA and writing it into the RT FIFO. The RT FIFO overwrites the oldest data when it fills up to keep it from overflowing. The second loop reports a TCP write timeout (tcp write error 56) around the time that the cRIO disconnects, after which it closes the existing TCP connection and then repeatedly tries to open a new TCP connection (each attempt times out after a 5 second delay).
All that appears normal and usually the connection is automatically restored. Occasionally, however, the cRIO is not able to re-open the TCP connection. Furthermore, the cRIO stops responding to pings from the remote host. On two occasions, the cRIO was finally able to open a new connection after 30-40 minutes. Other than that, the only way we've found out of this dilemma is to reboot the cRIO.
The frequency of the disconnects and the time before they occur doesn't seem connected to whether or not the cRIO is set to run the application at startup or if the application is run via an interactive VI window on the remote computer.
It is possible that the disconnects have something to do with which computer the cRIO is connected to, as the problems seem to happen much more frequently (often within minutes) when the cRIO is sending data to a laptop running Windows XP, but it can run for hours when sending data to a rackmount server running Windows Server 2003. Everything else (the speed and size of data being sent, the ethernet hub and cables, the VI running on the remote computer) is the same.

We're done most of the testing with a 9014 real time controller and a 9104 chassis. However, we've also seen similar behavior with 9014/9103 and 9102/9101 combinations.
The 9014 cRIO normally runs at around 50% CPU usage and less than 40% memory usage when the data is flowing steadily. The RT System Monitor did not indicate a spike in either before the cRIO disconnected.
Measurement and Automation Explorer is not able to connect to the cRIO after it disconnects. We tried pinging the cRIO from a different computer, but that also failed.
After disconnecting, the cRIO sends error messages to the serial port while trying to open a new TCP connection. It reports an error 56 (time-out error) 3 or 4 times (for a total duration of 15 or 20 seconds) and then reports an error 42 (generic error) at least 10 times per second for 18 seconds, and then switches back to 15 seconds of timeouts, and so on. When getting error 42, it ALWAYS gets it for 18 seconds straight. It usually gets error 56 for 15 seconds (3 timeouts) but sometimes for 20 seconds (4 timeouts).
When the cRIO disconnects, it can't be contacted by any computer through the ethernet port, yet the link lights still show that it is connected. If its connected directly, both the green and orange link lights on the cRIO light up, but when it is connected through the 10 Mb hub, only the orange link light lights up, but the hub shows that the cRIO is connected to it. In spite of this, it is still impossible to ping the cRIO in either scenario.
It is possible that, in addition to what computer the cRIO is connected to, the errors could be related to whether the cRIO has a direct connection to a computer or if it is connected through a hub. Today, we have only managed to get errors when the cRIO is directly connected to a laptop (one error after 1.5 minutes, one after 10 minutes, one after 7 minutes, etc.) There were no disconnects when the cRIO was connected to a 10 Mbps hub for more than half an hour.
Do any of those symptoms give you clues about what is happening?
Thanks!

My Airport Extreme Disconnects From the Cable MoDem Every Few Minutes

Hello,
I start a new topic as my previous title was wrong and there was no suitable answer.
I have had an Airport Extreme for 3 years and it sometimes disconnects after a few minutes. Actually, it more looks like that the Airport crashes: the "PC Link" light on the cable modem goes off, the Airport lights go off and I cannot find my Airport Network any more on my computer.
When this happens, I can either unplug it from the power and plug it back in, or simply move the Airport around a little bit, and it will re-start. Sometimes the problem does not re-occur for a few hours or days, sometimes it keeps happening every few minutes and of course drives me crazy...
Is it because ... :
- ... my Airport has a faulty connection and I should replace it?
- ... there are power surges in my electricity installation (eg this seems to happen when I or my neighbors have air conditioners on, I live in one of those old New York buildings with old electricity installations), and I should get an anti-surge device, or a newer Airport would deal with this better?
- ... of something else? I tried replacing the Ethernet cable between the MoDem and the Airport and it failed, there does not seem to be a source of interference around my place.
Thanks for your help!

I have had similar problems. Not as bad as some of you but usually in the morning I discover that I have dropped onto someone elses wireless they are not as fast. Then I have to troop upstairs, unplug the Extreme, replug it and then everything is allright until the next morning. But it is sporadic. It has run fine now for a few days. This problem has persisted now for a year. And yes I have tried resetting it.
Next month I plan on going to the big city and I am going to take my Extreme to one of Genius' at the Apple Store. I am curious if anybody else has tried that solution and how much it might cost.

My Airport Express Disconnect From the Cable Every Few Minutes

Hello,
I have had an Airport Express for 3 years and it sometimes disconnects after a few minutes. Actually, it more looks like that the Airport crashes: the "PC Link" light on the cable modem goes off, the Airport lights go off and I cannot find my Airport Network any more on my computer.
When this happens, I can either unplug it from the power and plug it back in, or simply move the Airport around a little bit, and it will re-start. Sometimes the problem does not re-occur for a few hours or days, sometimes it keeps happening every few minutes and of course drives me crazy...
Is it because ... :
- ... my Airport has a faulty connection and I should replace it?
- ... there are power surges in my electricity installation (eg this seems to happen when I or my neighbors have air conditioners on, I live in one of those old New York buildings), and I should get an anti-surge device, or a newer Airport would deal with this better?
- ... of something else?
Thanks for your help!

First, my mistake: I have an Airport Extreme base, not Express.
Second, I am sorry, I do not think it is interference.
I lose the connection to the CABLE, not the base, it's like the BASE crashes. How is that interference? It's not about the signal but about the connection to the cable. The cable MoDem does tell me that the connection is lost, as I said ("PC Link" does not blink anymore).
Finally, there is nothing in direct proximity of the Airport Extreme base that looks likely to do this: the computer and the base are 6ft apart, there is no microwave, no power line, no cordless phone, no bulletproof indow ...
Any better idea, anyone?
Powerbook G4 12in 867MHz Mac OS X (10.4.6)
Powerbook G4 12in 867MHz Mac OS X (10.4.6)

Disconnected from Ethernet

Hello, I have just received my Cisco Polycom and had it set up but it keeps reading the message "Disconnected Ethernet"
Could you please help me with this.
Thanks.

The two problems I have seen that caused this error are;
-> cabling issue; move it to a known working jack to verify cabling. Plug it directly into the switch to eliminate cabling.
-> other is a bad phone.

Constant Disconnection from Airport Extreme Networked iMac (late 2009)

I keep trying to copy fairly large files (2-7GB) over my Aiport Extreme (latest—5th generation) network from a early 2011 Macbook Pro to a 27" iMac (late 2009), and I keep getting disconnected from the iMac while the file is copying. I've tried repairing permissions on every computer in the house and restarting them, but I'm still having issues. I have no issues copying files to another late 2011 Macbook Pro in the house, so it seems to be happening only when I copy them to the iMac. The iMac is running Snow Leopard and the Macbook Pros are running Lion, so could that have something to do with it?
Additionally, I had been trying a wireless extended network with another previous generation Airport Extreme, but I found the connection wasn't much stronger with the extension, so I've just been leaving the second Airport Extreme unplugged. I've had that unplugged for months and haven't had any issues, so I don't think that's the problem.
I'm hoping this isn't a sign of something being wrong with the Aiport card in the iMac. Anyone have any ideas?

Bump?

I have accidentally "disconnected" from the Internet in Airport Utility. How do I reverse what I have done?

I have accidentally "disconnected" from the Internet in Airport Utility. How do I reverse what I have done? I clicked on the globe and clicked where it said "connected" and now it says "disconnected" HELP!

markwmsn, In the Airport Utility on my iPad I clicked on the globe at the top of the screen and over to the side there was the word "Connected". I clicked on it and it changed to read "Disconnected". At that point I started having Internet connection problems. All of the extremes (2) and expresses (6) I have spread throughout my home at first were green, but then began to either turn yellow, like the globe had, or disappear from the screen. Even though the globe remained yellow I went through the house and reset all the other devices. I was sure the problems were caused by my clicking on the word " Connected" and changing it to " Disconnected". I clicked on "Disconnected", but nothing happened. I called and wrote my ISP to ask them to reset the server serving my home. I got a call few hours later telling me that there had been an outage in my area, so I began thinking that perhaps there had been a coincidental occurrence of me clicking "Connected" and there being a service outage in my area. Needless to say I've decided to never click that word again for fear of the problem really being my actions.
If you can shed light on any of this, I'd be grateful.
Jay

Internet sharing from Ethernet to Airport Wi-Fi (how to turn off broadcast)

I'm using "Internet Sharing" from Preferences / Sharing / Internet Sharing, to share my connection from Ethernet to "computers using" Airport. I'm wondering if there's a way to turn off broadcasting of the wireless name.

Just found this old thread asking the same question, though the question itself was never answered within it.
http://discussions.apple.com/thread.jspa?threadID=1231413&start=15&tstart=0
Is it technically possible to turn off the SSID broadcasting when using Internet Sharing in OS X?

My mac osx 10.7.3 constantly disconnects from airport internet.

my mac osx 10.7.3 constantly disconnects from airport internet. I am able to reconnect every time but do this every 10 mins. i went to try and change channel but no airport base stations were found. i am positive it is not the router as all other devices stay connected. cant find any answers to my problem, just tons of others with the same issue!!!!

You can't discount your router just because the other devices work. The first thing I'd recommend doing is restarting the modem and router, then checking the router has the most up-to-date firmware (need to check that owners manual) and then you can check some other things like DNS settings and router channel conflicts with neighbors.
After restarting the router and double checking the firmware is up-to-date then I'd recommend checking the channel your router is on and what your neighbors use. You can download and use iStumbler, this will scan your area. If you are like most users neither you or your neighbors have changed the router channel from the default 5 or 6 channel. Look to see what channels are not being used and reset the router's channel. If that doesn't work then reset the DNS settings from the defaults your ISP uses. If you get to the point where the DNS does need to be reset here are the instructions:
1. System preferences
2. Network
3. Click Advanced
4. Click DNS tab
5. Click + sign
6. Add 208.67.222.222
7. Click + sign
8. Add 208.67.220.220
9. Click OK.
10. Exit System Preferences
If you want more info on the DNS please read CNET's DNS Article and MacWorld's DNS Troubleshooting articles. If all that fails then you can simply toggle the wi-fi on and off on the w-fi menu in the upper right of your screen.

Airport Express not receiving DHCP from Ethernet

Hello All,
Recently, one of my Airport Express 802.11n access points started using the self assigned IP address 169.254.238.166. While troubleshooting, I have found that this device will receive an IPv4 address when I connect it's Ethernet interface to my D-Link DG-S1248T, but not when I connect it to my Linksys SE2500 (the one it was connected to for over a year before starting this behavior). Ordinarily, I would suspect that something is preventing the Linksys from switching DHCP packets correctly to the Airport Express, but I can assure you the Linksys is sending DHCP packets because I am starting this thread from a Mac Pro connected to that Linksys, with a valid IPv4 address, and wireshark is showing bootps request and reply. I'm using bridged mode on the Airport Express, because I already have a gateway as my DHCP server with NAT, and created a wireless network with firmware version 7.5.2. I even setup another Airport Express 802.11n right next to the faulty one, same config (except the ID), same switch, and it works fine. I also swapped Ethernet patch cables on the Airport Express 802.11n Ethernet interfaces. The green LED access point went back to green when the cables were swapped, while the blinking amber access point stayed blinking amber. Therefore I believe the problem is localized on the faulty Aiport Express 802.11n. Has anyone else seen this fault? What is the root cause, and how did you repair the issue?
Thanks!

The Airport Express was functioning normally as recently as last Thursday, when I unplugged it to move. I took care in transporting it so there was definitely no chance of physical damage.
You mean that it was functioning normally when it was connected to a cable modem last Thursday. Everything has changed. Unfortunately, the Express is known to sometimes have problems after it has been plugged in for a long time, is unplugged, and then started up again. On average, I lose an AirPort Express about once a year this way.
Power up the Express for a few moments
Hold in the reset button for 8-10 seconds and release
Allow a full minute for the Express to restart to a slow, blinking amber light
Connect the Ethernet cable from wall jack to the WAN "O" port on the Express
On the Mac, open Macintosh HD > Applications > Utilities > AirPort Utilities
Click on Other WiFi Devices
Click on AirPort Express
The utility will suggest a setup that looks similar to this, except you will see a different picture of the AirPort Express
Network Name = Name that you want to call your wireless network. Keep it very simple.
Base Statation = Name that you want to call the AirPort Express device
Password = Password that will be used for both the wireless and device
Verify Password
Click Next
The utility will setup everything for you. When you see the message of Setup Complete, click Done
Check the network

My new Mac Air continues to disconnect from WiFi after going to sleep. When waking it up I have to manually re-connect. How do I keep it connected?

My new Mac Air continues to disconnect from WiFi after going to sleep. When waking it up I have to manually re-connect. How do I keep it connected?

I had this problem too and solved it by doing a clean install. After that it was gone.
This is a drastic method since it takes quite some time to reinstall lion and all your software.
Thoughts I had why it started working after a clean install are the following:
It looked like the airport wasn't able to reconnect fast enough before the connection timed out. So what could have prevented my mac from being able to connect fast enough?
Apps that consume processor cycles. I love what I would call 'System Enhancers', little apps that enhance my workflow (Moom, Alfred, Dropbox, Default Folder etc). I'm not saying that these are the problem, they might be programmed processor friendly, but check if you have apps that consume processor cylcles. It might prevent airport from being able to reconnect quickly enough before it times out.
Mobile Config profiles. Another thought I had was that I had a mobile config 802.1X profile installed for the company were I worked. It used TTLS to connect to the corporate network. This profile might have gotten in the way.
And a sidenote...
Routers with hardware acceleration might also be a problem. My router is a Wireless Gigabit Router 300N WL-351 and has hardware acceleration. As soon as I activate that my wifi connection keeps dropping. It is as if a Macbook Air can't handle that amount of optimisation.
That's it, hope it helps those who are still having the problem.
Best, Jan

Airport Express disconnects every 5mins (Client Mode)

Hi all,
I recently bought an Airport Express (n) so I could stream music to my Hi-Fi and bridge my Xbox 360.
I have configured the AX to connect to my existing wireless network which is served up by a Billion 7800n router (G+N mode).
However, every 5 minutes it disconnects from the network, here are sample of the logs..
Dec 16 06:29:45 Severity:5 Installed unicast CCMP key for authenticator 00:04:ed:9b:bf:39
Dec 16 06:34:59 Severity:5 Disconnected from network.
Dec 16 06:35:05 Severity:5 Joined BSS 00:04:ed:9b:bf:39
Dec 16 06:35:05 Severity:5 Installed unicast CCMP key for authenticator 00:04:ed:9b:bf:39
Dec 16 06:40:10 Severity:5 Disconnected from network.
Dec 16 06:40:16 Severity:5 Joined BSS 00:04:ed:9b:bf:39
Dec 16 06:40:16 Severity:5 Installed unicast CCMP key for authenticator 00:04:ed:9b:bf:39
Dec 16 06:45:21 Severity:5 Disconnected from network.
Dec 16 06:45:27 Severity:5 Joined BSS 00:04:ed:9b:bf:39
Dec 16 06:45:27 Severity:5 Installed unicast CCMP key for authenticator 00:04:ed:9b:bf:39
Dec 16 06:50:33 Severity:5 Disconnected from network.
Dec 16 06:50:38 Severity:5 Joined BSS 00:04:ed:9b:bf:39
Dec 16 06:50:39 Severity:5 Installed unicast CCMP key for authenticator 00:04:ed:9b:bf:39
Dec 16 06:55:44 Severity:5 Disconnected from network.
Dec 16 06:55:49 Severity:5 Joined BSS 00:04:ed:9b:bf:39
I'm using WPA2 AES encryption, wireless is on a non-competing channel and the airport is only 2-3 meters away from the router in the same room.
Things I've tried are upgrading Router firmware to latest (1.6), switching Wi-Fi channels, enabling B mode on the router (BGN) but nothing seems to work.
I don't think it's interference as it disconnects almost every 5 minutes which suggests some config/hardware issue.
Anyone have any ideas? I've hit a brick wall.
Thanks...

Update:
This appears to be by design? - connection doesn't drop when using AirTunes/Airfoil which is what I bought it for.
However I thought the Ethernet port wouldn't work when used in Client mode (according to the FAQ). I was able to connect my Xbox 360 to the AX when in Client mode using a network cable and it is able to connect to Xbox Live. When doing this it drops off on the 5 minute intervals when the AX disconnects and reconnects.
I guess if I used AirTunes at the same time as the X360 it would work.
Would be nice if it worked as a stable bridge in client mode as I could bin off my other wireless bridges. Never mind - I ain't forking out for another AX so I can use "Apple's" WDS.
Message was edited by: MonkeeBoy_UK

Apple TV's disconnects from itunes

I have 2 apple TV's streaming from my mac mini. Whenever I reboot my iMac into bootcamp both AppleTV's disconnect from the iTunes on the mini. This is very weird because I have nothing pretty much on the bootcamp part that would interfere with it, not even iTunes installed. Anyone have a clue as to what might be causing this? Both ATV's are on wireless N to my Airport Extreme router.

You're talking about those WIFI bridges they make for xbox 360s that connect the 360 ethernet to a wifi adapter, bridging it?
That is a possible solution, but I will definitely check with Apple first, hoping it will be a no money solution (I am a grad student, every dollar helps).
My apartment is two rooms, my iMac being in another room, so that wouldn't work. The Wifi extender will probably be my only hope if Apple is not cool with the helping a brother out.

Activate Airport on Disconnecting from Ethernet

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