Why is-internet and network server

When online on my Macbook Air, I often find internet connection dropped and research in Network preferences / help / diagnosis, I find server and Internet keys shown yellow status. I can almost always reconnect easily by clicking on continue and re - select the wireless network (a 5 Ghz one, but the same problem exists with my network no 5 Ghz), then I click on option to allow Network Diagnostics key to the network selected in my keychain.

This often works very well in a few seconds, so not a big deal but sometimes very annoying because it can occur several times in a short period or during a day, and then not at all for hours or days, but often it's almost every day.

Here is a list of equipment etc:

MacBook Air 10.10.5, Imac 10.10.5, VirginMedia superhub, Airport Extreme (in bridged mode), Airport Express (closer), Apple TV (often disabled) iPhone 6s.

Problem is really only apparent on Macbook Air, iMac has (if Wifi also in operation usually) ethernet connection. iPhone6 seems to have no problem with wifi internet at home or elsewhere.

I quite often other problems in my Wifi system, however, recently, especially when you use Apple TV, Airport Extreme and Express and modem even falling Airport utility, which I always managed to correct later in various restarts and resets. But the preceding is the most frequent being almost a daily reality at least once or twice.

I tried to choose different channels in Airport utility for Airport Extreme and Express networks, but this made the incredibly slow connection (normally it is 36 Mbps on Macbook). I also disabled IPv6 on all devices (or put the link-local), and this seemed to help with the problem of the Apple TV appears to have had no effect on this.

I also disabled Bluetooth on Macbook while writing this, but the problem has happened several times already.

This happened to my wife (for me) for awhile now.  I had not thought to check this forum until now. We have Airport Extreme in Bridge connected to Comcast cable modem mode (not sure of the brand/model right now) and the connection features include retina Macbook Pro, Macbook Air, iPhone 2 6, iPad, iPad 2 Air Air, not to mention a number of non-Apple devices.  It is the problem most often on MacBookAir and iPad Air.  Turns off WiFi for a few seconds, then turn it back on again and then it works OK.  This seems to occur several times a day and could happen just after awakening from a sleeping device.

All devices are up to the latest version of iOS and Mac OS x

Another issue that could be related have to do with the Airport Express in "Client" mode  Set up to provide wired ethernet port for a device far the main router.  Note that in this mode, it is not (supposed to be) providing a wifi signal, just in its port ethernet access.  It seems to work, but quite often, maybe once a day, he kills wifi in its immediate vicinity.  If I'm in the room with him and lose the wifi then go to a location close to the main router I'm back online again.

I would like ideas or cures that anyone might have on any of these problems.

Ed

Tags: Wireless

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