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macOS 12.8 Intermittent Lost Network

I have a mid 2011 Mac mini running Sierra 10.12.6.  I am getting intermittent network drop outs both using Ethernet and WIFI.   I deleted and reinstalled the port configuration for both wifi and ethernet and no improvement

Here Is sample of results from ping

Request timeout for icmp_seq 210

64 bytes from 10.0.1.1: icmp_seq=211 ttl=64 time=0.459 ms

64 bytes from 10.0.1.1: icmp_seq=212 ttl=64 time=0.591 ms

64 bytes from 10.0.1.1: icmp_seq=213 ttl=64 time=0.374 ms

64 bytes from 10.0.1.1: icmp_seq=214 ttl=64 time=0.367 ms

64 bytes from 10.0.1.1: icmp_seq=215 ttl=64 time=0.438 ms

Request timeout for icmp_seq 216

64 bytes from 10.0.1.1: icmp_seq=217 ttl=64 time=0.290 ms

64 bytes from 10.0.1.1: icmp_seq=194 ttl=64 time=0.346 ms

Request timeout for icmp_seq 195

Request timeout for icmp_seq 196

64 bytes from 10.0.1.1: icmp_seq=197 ttl=64 time=0.341 ms

64 bytes from 10.0.1.1: icmp_seq=198 ttl=64 time=0.445 ms

Request timeout for icmp_seq 199

64 bytes from 10.0.1.1: icmp_seq=200 ttl=64 time=0.369 ms

64 bytes from 10.0.1.1: icmp_seq=201 ttl=64 time=0.257 ms

64 bytes from 10.0.1.1: icmpRequest timeout for icmp_seq 218

64 bytes from 10.0.1.1: icmp_seq=219 ttl=64 time=0.426 ms

64 bytes from 10.0.1.1: icmp_seq=220 ttl=64 time=0.415 ms

64 bytes from 10.0.1.1: icmp_seq=221 ttl=64 time=0.567 ms

Request timeout for icmp_seq 222

I don't think it is the routers as I do not have the same problem with a Mac Pro also running 10.12.6.    

Any thoughts or suggestions??

Check for Wi-Fi issues using your Mac - Apple Support

I guess I didn't state this clearly.  Same problem with ETHERNET and WIFI.  If I turn off wifi I still have the same problem

No, you explained the problem quite clearly. Following the instructions in that Apple Support document will provide additional information that you don't appear to be interested in obtaining.

As for interest, I looked at that article and , as titled. The additional information entails WIFI.   WIFI is my communication path of last choice...for my various work stations I rely on the hardware ethernet.     The drops continue with wifi totally off .  

The problem appears  unique to this mini as other work stations  are not experiencing the issues

Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.

Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.

Isolating an issue by using another user account

If the problem is still there, try booting into the Safe Mode using your normal account.  Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer or by using the developer’s uninstall instructions. For each disable/delete, you will need to restart if you don't do them all at once.

Safe Mode - About El Capitan    also Sierra

Safe Mode Startup – El Capitan.          also Sierra

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. On the screen with Options, please open Options and check the bottom 2 boxes before running. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown.
  

Etrecheck – System Information

You have opened network utility via spotlight and selected ping and entered the credentials , if you selected send unlimited no of pings you should not get request time outs .

Read this article and click on sub articles to get more information macOS Sierra: Network Utility Help

最后更新：2017-09-04 00:43:46

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