Sometimes, my Mac is unable to find other devices on my Wi - Fi

Sometimes and for periods of time, my MacBook does not all devices on my Wi - Fi with the exception of the Time Capsule and himself.

When he arrives, he can't see the Time Capsule and himself. So continues Internet connection, but I can no longer connect to others my Mac, my iPhone, my Sonos, my plant automation and so on.

When I run LanScan on my MacBook, it does mention that two IP addresses: Time Capsule and himself. Normally, the list has 20 items on it.

When I run Fing on my iPhone, the list of IP addresses appears complete and even the MacBook on it. And all devices continue to operate and communicate with each other and the Internet. It's just that the MacBook does not see them.

It started happening a week ago and occurs about once a day. Sometimes it is fixed after a certain time (in hours), sometimes after that I restart.

The MacBook is connected to the main wireless network and NOT on the guest network.

What could be the problem here, and how to fix it?

MacBook Pro 15 "late 2011, with OS X 10.11.6"

Time Capsule v 7.7.7

-Ron.

I think I have solved the mystery. It seems that the Cisco AnyConnect this allows. As soon as I leave the AnyConnect application, the LAN is back.

I will follow with Cisco upward.

-Ron.

Tags: Mac OS & System Software

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