Airport loses connection. i need to restart. Why?

Why does airport on my imac core5i 2011 keep losing connection? My other devices do not.

Might be the session limitation or Interference or Router IOS issue.
Needs to check the logs for clarifying the problem and to check why clients are not getting associated.
Are your clients getting the proper signal when they are not getting associated?

Similar Messages

Airport loses connection but still shows 4 full bars

I've got a strange problem I haven't been able to figure out myself.
On my MacBook Core Duo (original 2006) on 10.6.2, my airport loses connection with my wireless router (Linksys WRT54G) after 5-10 minutes of use. My airport still shows a full signal, but I lose all connection (I cannot even see the router itself when I navigate to its IP address in Safari - normally I get the web based configuration panel). If I turn off Airport and then turn it back on again, I get my connection back for another 5-10 minutes.
I am using WPA encryption.
I get this problem when my computer is far away from the router or very close.
I do not get this problem on our other computers - one Vista desktop and and two XP laptops.
I have no connection problems when I plug my modem directly to the MacBook via ethernet.
My only thought at this point: there are numerous (8-10) other 802.11x networks in my building. I've done my best to choose a free channel, but the best I can do is choose a channel only 1 channel away from others (i.e., choose 7 when others are on 6 and 8). I wonder if signal interference is an issue...but why would all my Windows machines have no problem?
I'm out of ideas at this point - I appreciate any help :)! Thanks!
Message was edited by: MBaker22

MBaker22
I am having the SAME exact problem with my Mac. I have a late 2008 white 13" MacBook and it's been upgraded to Snow Leopard and I'm running version 10.6.2. I am wondering if any Apple employees can assist us on this issue or tell us if the impending 10.6.3 upgrade will have a fix for this.
My Airport will be connected to my wireless network and be working fine. As MBaker22 says, after 5 minutes the connection seems fine, the IP is fine, the network is fine and the network works for other laptops and desktops in my house BUT I can't access the Internet. All of a sudden I have no ability to check for software updates, browse the web or do anything that connects to the Internet.
Some other strangeness. When I try to hit the IP of my wireless router in my web browser, it asks me for credentials and then just sits there saying Connecting to 192.168.1.1...
It also only says connecting to www.google.com or www.cnn.com or www.yahoo.com when Airport is behaving this way.
If I plug in my Ethernet cord to my Mac everything works just fine so this is an Airport issue and probably an issue with Snow Leopard? I'm not sure.
Anyway the REALLY weird thing is that I can ping some websites and not others in the terminal when Airport starts behaving this way. That might be because of caching but either way.
Here's a TCPDUMP of my connection on Airport (en1) using Google DNS 8.8.8.8 (but if I use my ISP DNS it still does this):
11:54:45.524180 ARP, Request who-has 192.168.1.104 tell 192.168.1.1, length 28
11:54:45.524269 ARP, Reply 192.168.1.104 is-at 00:22:41:f9:27:e7 (oui Unknown), length 28
11:55:14.273259 IP 192.168.1.104.50470 > iw-in-f103.1e100.net.https: Flags [F.], seq 1, ack 4294965572, win 65535, options [nop,nop,TS val 31991140 ecr 745959806,nop,nop,sack 1 {4294966990:0}], length 0
11:55:14.349839 IP iw-in-f103.1e100.net.https > 192.168.1.104.50470: Flags [R], seq 4200800152, win 0, length 0
11:55:14.648516 IP 192.168.1.104.59886 > google-public-dns-a.google.com.domain: 33436+ A? en.wikipedia.org. (34)
11:55:14.657939 IP 192.168.1.104.57695 > google-public-dns-a.google.com.domain: 47825+ AAAA? en.wikipedia.org. (34)
11:55:14.733680 IP google-public-dns-a.google.com.domain > 192.168.1.104.59886: 33436 3/0/0 CNAME rr.wikimedia.org., CNAME rr.pmtpa.wikimedia.org., A 208.80.152.2 (100)
11:55:14.737110 IP google-public-dns-a.google.com.domain > 192.168.1.104.57695: 47825 2/1/0 CNAME rr.wikimedia.org., CNAME rr.pmtpa.wikimedia.org. (135)
11:55:14.737165 IP 192.168.1.104 > google-public-dns-a.google.com: ICMP 192.168.1.104 udp port 57695 unreachable, length 36
11:55:14.821208 IP 192.168.1.104.50471 > rr.pmtpa.wikimedia.org.http: Flags [S], seq 3597359122, win 65535, options [mss 1460,nop,wscale 3,nop,nop,TS val 31991146 ecr 0,sackOK,eol], length 0
11:55:14.883842 IP rr.pmtpa.wikimedia.org.http > 192.168.1.104.50471: Flags [S.], seq 1708330874, ack 3597359123, win 5792, options [mss 1460,sackOK,TS val 2552235245 ecr 31991146,nop,wscale 9], length 0
11:55:14.883938 IP 192.168.1.104.50471 > rr.pmtpa.wikimedia.org.http: Flags [.], ack 1, win 65535, options [nop,nop,TS val 31991146 ecr 2552235245], length 0
11:55:14.884271 IP 192.168.1.104.50471 > rr.pmtpa.wikimedia.org.http: Flags [P.], seq 1:379, ack 1, win 65535, options [nop,nop,TS val 31991146 ecr 2552235245], length 378
11:55:14.945929 IP rr.pmtpa.wikimedia.org.http > 192.168.1.104.50471: Flags [.], ack 379, win 14, options [nop,nop,TS val 2552235251 ecr 31991146], length 0
11:55:15.071277 IP 192.168.1.104.60681 > google-public-dns-a.google.com.domain: 34531+ PTR? 2.152.80.208.in-addr.arpa. (43)
11:55:15.164792 IP google-public-dns-a.google.com.domain > 192.168.1.104.60681: 34531 1/0/0 PTR rr.pmtpa.wikimedia.org. (79)
11:55:15.247579 IP rr.pmtpa.wikimedia.org.http > 192.168.1.104.50471: Flags [P.], seq 1:529, ack 379, win 14, options [nop,nop,TS val 2552235277 ecr 31991146], length 528
11:55:15.247664 IP 192.168.1.104.50471 > rr.pmtpa.wikimedia.org.http: Flags [.], ack 529, win 65535, options [nop,nop,TS val 31991150 ecr 2552235277], length 0
11:55:19.730376 IP 192.168.1.1.ssdp > 239.255.255.250.ssdp: UDP, length 271
Now that's me (192.168.1.104) and my router (192.168.1.1) trying to connect to en.wikipedia.org without success.
Any help here would be great, especially since I'm not alone.
Matt

Airport loses connection with MR814 V2

I have an iBook G4. My Airport loses connection with my Netgear MR814 V2 router. The only way to get it back is to unplug / plugin the router. The connection is ok as long as I'm on the iBook. The problem seems to occur after I've shut the iBook down for the day and then the next day the connection is gone.
I also have my Windows based Dell laptop using the router (wirelessly) and never have this problem.
This is really frustrating. Any ideas would be greatly appreciated!!
Mark
iBook G4 Mac OS X (10.4.6)

I do not have the answer for you, but I am suffering the same thing with my macBook Pro. After about 15 minutes, I loses the connection, and the airport icon in the menu bar goes transparent. Nothing works to renew the connection except to unplug and re-plug my router. If you hear of any remedy, please post.
Jeff

Airport loses connection sometimes

Hi guys....need help! I bought my macbook pro 13 inch some time in September 2009. Brand new. Up until 2-3 months ago, things were running smoothly in regards to my wireless connection. Lately (for the past 2-3 months) when I close the lid of the macbook (put to sleep) or shutdown and then reboot or bring back from sleep, my airport does not connect to my wireless connection. It shows my wireless network in the list, the password is also still stored but when I hit connect, it says connection failed. The only way it will reconnect is if I unplug the wireless router and plug it back in again. IT instantly connects after that. Also, the problem is sporadic, meaning that sometimes i can put the mac to sleep/reboot and it will not lose connection. This is driving me crazy. I need help. It cannot be the router because other Windows laptops in my house are running fine! Also my iphone does not lose the wifi connection, its just the macbook pro. Any suggestions please??

This is a known complaint in other threads. I don't think I have found a conclusive solution but a work around. There have been posts that the router upgrade fixes or a different router.
Keep pinging something to keep the connection:
Temporary workaround that works for some:
As soon as you connect to your wireless network, Open Terminal and start a ping going. Use your router IP address; but any local address will do:
If your router has an IP address of 10.10.10.1, then open Terminal (in your Applications ---> Utilities folder) and type;
ping 10.10.10.1 <return>
You'll see a string that looks like:
64 bytes from 10.10.10.1: icmp_seq=728 ttl=64 time=1.527 ms
64 bytes from 10.10.10.1: icmp_seq=729 ttl=64 time=1.513 ms
64 bytes from 10.10.10.1: icmp_seq=730 ttl=64 time=1.203 ms
64 bytes from 10.10.10.1: icmp_seq=731 ttl=64 time=1.684 ms
64 bytes from 10.10.10.1: icmp_seq=732 ttl=64 time=1.063 ms
Your routers adress can be found under:
system preferences > network > airport > advanced... > TCP/IP
This keeps the connection active. It even survives sleep/wake.
I think people using this work around have it running all the time. But in your case you could start when you leave your computer. I think it you stop when you close that terminal window (I suppose there is a stop ping command I should look up).

While streaming music, my airport loses connection, is this typical?

While streaming music through my iPhone, my airport extreme loses connection. Is this typical? I assume it loses connections at other times, but it most noticeable while streaming music.

It's a sign of a wireless environment that is less than ideal, which can be the result of wireless interference from competing wireless networks, the presence of intervening building materials and other obstructions, or any combination of these factors. They can't all be avoided but you may be able to mitigate their effects.
Streaming music or video is demanding of bandwidth and intolerant of the minor interruptions that go unnoticed when performing simpler networking tasks.

Airport loses connection to Internet under heavy load

Often, all the computers in my house will lose their Internet connection. However the network stays up just fine. There are both wired and wireless computers. A Netgear 16-port switch handles all the wired machines. The only solution is to pull the power cord from the AEBS and plug it back in. 30 seconds later, everyone's Internet is back up. The AEBS gets its Internet connection via PPoE to our DSL line.
From recent experimentation, I've discovered that this happens a LOT more frequently (at worst, every few minutes) when there is a lot of Internet traffic - many short connections, like when I run web scraping bots. If we go on vacation for 2 weeks, the connection stays up fine.
I know this problem has been discussed before but I've never seen a solution. All Macs and AEBS are on the latest software. Any suggestions?
- Desperate for AEBS love

I'm experiencing problems with airport connections recently, too. I did a lot of analysing since then.
My configuration is based on a linux-driven NAS connected to two wireless acesspoints (1x SMC Barricade 2804WBR, 1x Fritzfon with recent firmwareupgrades). Two PowerBooks are connected with cable, two use their inbuild aiport cards.
Volumes are mounted from teh NAS via NFS.
Everything worked flawlessly for serveral month until, I assume, to the 10.4.8/10.3.9 update. I'm afraid the net isn't this much loaded that the connection losses were showing up immediately.
But then there was the need to rebuild the iTunes biliothek on the MacBook Pro which uses WLAN (connected to the SMC). For some time the connection worked but then the connection to the server (NAS using NFS) was lost. I tried it with cable an without (10.3.9 and 10.4.8). The same problem occured.
I tried to transfer different kind of files and folders an identified some files which seemed to cause the server losses. Always at the exact same point. But I had to learn that theses points differ whether I connect via the SMC or the Fritzfon. I have to say that the connection via the Fritzfon are somewhat more stable.
Fact is, that if the problem occures the whole network stalls, not only the connection between WLAN accesspoint and the client computer but the connection between cable-connected ones, too.
It's even possible that the server or the SMC becomes unresponsible via telnet so I have to restart it by pressing the reset-button.
I think I'll roll the MacBook Pro back to 10.4.7 and do some extensive testing with only this one active in the net.

Airport Loses Connection

Hi,
ive been having this problem for a while now and ive been trying loads of different things to fix it to no avail...
I have a NETGEAR rangemax 240 router to where my good old macbook pro's airport connects to. when i leave my computer alone and then the screen saver, then the screen turns off, after a while the connection drops to the wireless network. about 2 months ago, this never used to happen. the connection would NEVER drop. now it seems to drop every time the computer's screen goes to sleep. the computer is alway running, and never actually turns off or goes to sleep. only the screen sleeps. it seems like if the screen sleeps for about an hour or 2 then the airport connection drops. the only way to get it to come back it to select the airport icon at the top and choose my NETGEAR network again. this is really annoying as i need to stay permanently online.
what i have tried:
1. restarting the computer
2. deleting old network profile and creating a new one
3. putting airport at top of network list in system prefs
4. changing network ssid
5. deleted keychain WPA personal and manually connection to network again and then saving the password
6. searched every forum possible and tried everything i can find
any other ideas would be greatly appreciated.
thanks!

I think you need to wait for a fix from Apple on the Intel/Book/Wireless problem... or use an unencrypted connection.:-(
Though... I'm thinking if you knew how to set up a Root account and make an identical Keychain as the user, that might be the cure.

Airport loses connection after I put my mac to sleep.

After Everytime I put my mac to sleep, My airport seems to turn itself off and will not turn back on untill I restart. Then, the Icon that shows my airport connections turns into an arrow poining up. What does that arrow mean and how do I keep it from happening?
--At a loss, thanks for your help! Joseph

Same thing here... on my Titanium Powerbook. I am trying to figure out if it was after I updated to 10.4.4. No problem on my G5. I am going to try installing 10.4.4 again.

PowerBook G4 17" Airport loses connection to Airport Extreme

I am presently running 10.4.5 on a PB17 G4 connecting at home to an Airport Extreme Base Station running V5.7. I additionally connect to another Airport Extreme Base Station at my office running V5.7. After about 5 minutes of connection time, my PB17 begins an off and on connection cycle which never seems to end. After a few minutes of handshaking between each Airport, the PB17 would maintain a connection for 5 minutes or so and then begin dropping the connection all over again.
This problem has been occuring for several weeks and existed when the PB17 was running 10.4.3, as well.
If it did not seem to be some consistant over time, I would wonder if the internal antenna is no longer seated properly.
BTW, I also run an iMac G5 (with built-in iSight) on the same network. It never has a problem.
Any suggestions??
PowerMac G4 DDR 1 GHz

Problem is still there .. and it's getting worse. Is there any possibility to uninstall this "security" patch from January?
Maybe this'll help a little:
Ping shows up this strange behaviour when the connection is lost:
ping: sendto: Host is down
ping: sendto: Host is down
*snip about 15 lines*
ping: sendto: Host is down
ping: sendto: No route to host
ping: sendto: Host is down
ping: sendto: Host is down
*snip about 15 lines*
ping: sendto: Host is down
ping: sendto: No route to host
and so on .. the log of the various routers tell me, that the Mac disconnects every 8 seconds after reconnecting to the network. And it takes another 26 seconds for the MAc to retry the connection (without success ) ...

Airport Loses Connection and Slow Download

After establishing a connection to the router, airport then drops out. First of all the number of bands on the airport symbol on the menu bar reduces gracefully from 4 to 3 to 2 to 1. If I click then on the airport symbol, 'scanning' is shown but with no result. If I try to reconnect, then the wireless network is not visible, either via the airport symbol, or via 'Network/System Preferences'.
When I am connected, however, the download speed as measured using www.speedtest.net is approximately only 50% of what is achieved on either a Windows laptop or my daughter's MacBook operating on 10.6, neither of which suffer the lost connection either.
There seem to be many similar problems reported in this and other fora, but no solutions that work for me.
Does anybody have any idea what to do?

Wi-fi can be very fussy. Cell phones, microwave ovens, other networks in the vicinity can all contribute to diminished performance due to interference. Understood that the other Mac and the PC are in the same location and function properly, (that said, vertical as in transmitting through a floor, is supposed to be more problematic than horizontal), but it is possible the Airport Card is just on the weak side to begin with and more vulnerable than the others. Everything--vertical transmission through the floor and a (perhaps normally) under performing Airport Card--may be contributing to a weak, dropped connection. Don't know. Don't want you to spend money for nothing, but it wouldn't be a big gamble to try one of these which are supposed to be superior. I'm using an Airport Extreme Card on this G5 with no problems, but it's on the same floor as the router and that's not terribly far away.
Also, have you experimented with different channels to see which one has the least interference? If you Option click on the Airport Icon, you will see the RSSI and the Transmit rate (grayed out) under your Network name. The lower the RSSI--it's a negative number--the better, and the higher the Transmit Rate, the better. For G the highest will be 54 (mbps.) I'm not sure which speed the iSight uses, but it might be limited to G. The default channel for many routers is channel 6, so if you're seeing other Networks in the area, it might be one to avoid in particular. All the others, with the exception of 1 and 11 have some overlap, so that's not great. I'm using channel 1 myself, but I might have to move around again if it becomes necessary. My Transmit Rate often stays at the peak of 54, but with interference, will dip sometimes to 36 or even 24.
My RSSI is around -67, but that will fluctuate considerably, as well.
Is there a more powerful antenna as an option for your brand of router?
I think you said you have SSID set to broadcast. That's the correct setting, since not broadcasting the SSID won't offer any extra security and will often cause problems.
You also might try posting over in one of the Airport forums (Extreme?) There are some really knowledgeable people over there for these issues.
http://discussions.apple.com/category.jspa?categoryID=140

Airport express loses connection and blinks amber until restarted many times a day.

I have an AirPort Extreme as my,main router with a gen 1 airport express and 2 gen 2 express as range extenders to cover all 3 floors and outdoor area. I have an Insteon HUB connected to one 2nd generation express and an Insteon IP camera that is on the far edge of the WiFi coverage area. About 3-5 times daily, the express will blink amber and lose connection. I need to either restart the network from airport utility or just unplug and restart the specific express. This fixes the problem but only temporarily. Why does this occur? Is it due to the wireless camera losing connection? It seems to occur when I try to access the camera or devices thru the Insteon App. I have purchased the additional express thinking it was a poor connection to the other range extender but this has made no difference. I have been on tech support with Insteon for many hours,and they are unable to help. Any suggestions?

Hello Daniel Epps. Welcome to the Apple Discussions!
Every few minutes, it seems to temporarily lose its connection to the internet and start flashing amber until it reconnects. It's extremely annoying. Does anyone know why this is happening? Is it an airport problem, or a cable modem problem?
It could be either or neither ...
It is very possible that you may have some form of Wi-Fi interference in the immediate area that is preventing you from getting a good clean signal, and what I would check for first.
I suggest you perform a simple site survey, using utilities like the following to determine potential areas of interference, and then, try to either eliminate or significantly reduce them where possible:
o MacStumbler, or
o iStumbler

Connecting to home internet via airport - always need to restart the router

I set my home PC as the main station to connect to my ISP. With a wireless router (linksys Wireless-B), I used to share the internet connection to other wireless devices, for instanace, my palm and ibook, my sister's notebook PC and Pocket PC. once, I took my ibook to an internet cafe, which gives free wireless connection facilities. My ibook obviously scanned the wireless network, and was connected (as I noted from the Summary of the "internet Connection". but, when I activate Safar, it said that it could bring me to any website because my computer is not connected to internet. it's very strange, as the Internet Connection said it's connected to the wireless network. The Safari page suggests me to run "network diagnosis". i follow the instruction, and it says I should restart the router and then it would work. I didn't succeed. A while later, it connected. I thought it was okay.
Then, this problem comes up even when I am using my home's internet connection via the airport. I use DHCP to connect to my home internet connection. though the airport summary page said that it's connected to my router (the IP address is my router's address), again, Safari said my computer is not connected to internet, so it didn't work. I followed the instruction of the Network Diagnosis, it again asked me to restart my router device. I also noted from the Airport Section of the Network Perference that, it says the airport has a self-designated IP addres, so it may not connect to the itnernet. later on, I retarted the router and the modem (without turn on my home PC), the ibook connected to the internet.
i checked the router setting of my home PC. I'm sure that it's open to all wireless user. Strange through, after I update the settings (even though i didn't make any changes, perhaps the action of 'save settings', it's kind of equivalent to the action of restarting it), my ibook's connection works. When my retarted my PC and ibook, the connection problem comes up again.
it's very frustrating. Does it mean that I need to restart my router everytime? What about if I want to connect to wireless hotspot outside?
Please please help

Your problem description is complicated, making it hard to figure out what exactly is wrong. Unfortunately, WiFi does this quite often.
To avoid this kind of problem, you should set up different Locations in your Network Preferences for different places that you connect up. That is, make one location for your Internet cafe and another for home. Leave the Automatic location alone.
For locations you know you are going to connect by WiFi, go to Network Port Configurations and drag Airport to the top of the list to give it priority.
If you have a location, where you want an ethernet connection or want to use your internal modem only, then drag those options to the top. Get the idea?
MacOS seems to get confused sometimes when you switch back and forth between different connections all the time. This will not happen if you tell MacOS where you are by explicitly setting a location.
To get out of a situation where MacOS thinks you are connected to non-existent ethernet connection, go into
/Library/Preferences/SystemConfiguration
and delete the NetworkInterfaces.plist file.

WRTU54G-TM router loses internet connection and needs to be restarted to regain connection.

We recently switched from a WRT54G to a WRTU54G-TM router from T-mobile and the new router seems to randomly lose our internet connection and needs to be restarted to regain it. It could be coincidence but this has happened a couple of times immediately after using our VoIP phone connected to it. I tried switching back to the old router and everything worked fine once again. Typically with the WRTU54G-TM it will stay connected for about a day or so and then it will need to be restarted. Although sometimes it will need to be restarted multiple times in one day. Just curious if anyone had any quick suggestions or setting configurations that I may have missed?
Thanks for your input.
Rylynn

I just added the T-Mobile@Home service and set up a WRTU54G-TM this past Saturday. During the first 4 days, the blue light on the router went out and I lost phone service - until rebooting the router each time. Phone service returned about a minute after rebooting in each case.
I did NOT lose Internet service while phone service was down.
I reached T-Mobile customer care the second time, and the rep I spoke with mentioned that she had a couple of other calls similar to mine earlier in the day. So far, the reps had no official word regarding this problem, and the word going around was simply to tell people to reboot their routers.
Tech Support had about a 20 minute hold queue, so I didn't yet to speak with a technician.
The phone service has been up for the past 2 days -- curious to see how long it holds up this time. Also checking the Linksys site regularly to see if new firmware (beyond the 1.00.04 I have loaded) becomes available - maybe that will address the problem.
When I complained to customer care, the one thing they did was to extend my "buyer's remorse period" to 30 days (instead of the usual 14). So I plan to hang on for another couple of weeks to see if this gets straightened out. I love the service, sound quality and price. Hoping it works out - I want to keep this!
- Jon

Why does my airport loses wifi connectivity often?

I am trying to find out my my airport loses wifi connectivity. All of a sudden, there is no wifi in the house. What do i need to check?

Hey barbaraeberle,
Thanks for the question. I understand that your AirPort seems to have lost its connection to the internet. To troubleshoot this issues, let’s try the following:
See if you can isolate the issue first by using Wireless Diagnostics:
About Wireless Diagnostics
http://support.apple.com/kb/HT5606
Additionally, check for sources of interference and reset your base station:
Wi-Fi and Bluetooth: Potential sources of wireless interference
http://support.apple.com/kb/HT1365
Resetting an AirPort base station FAQ
http://support.apple.com/kb/HT3728
Thanks,
Matt M.

My iMac keeps losing the connection to my chosen Airport Wi-Fi network. Anyone know why this happens?

My iMac keeps losing the connection to my chosen Airport Wi-Fi network. Anyone know why this happens?

Close all Apps and see if Activity Monitor shows any processes runnung.
Not that I think this is the cure but have you tried these resets:
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.
PRAM RESET
Zap the PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Airport loses connection. i need to restart. Why?

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