Hi!

I have a problem with one of remote probe sporadically losing connection to the PRTG Core server after update to 17.4.33.3283.

Core Server Log:

  • 13.11.2017 11:20:51 (4020) Connect from 192.168.xxx.xxx:52404
  • 13.11.2017 11:20:51 (4020) Version=51283
  • 13.11.2017 11:20:51 (4020) Pass ok
  • 13.11.2017 11:20:51 (4020) Login ok
  • 13.11.2017 11:20:52 Probe: Incoming Login Message from 192.168.xxx.xxx:52404 Name=SQL GID={4D7A-851B-428A79B8DF44}
  • 13.11.2017 11:20:52 Probe: Sending Welcome Message to 192.168.xxx.xxx:52404
  • 13.11.2017 11:20:52 Probe "SQL" at 192.168.xxx.xxx:52404 has connected
  • 13.11.2017 11:20:52 Login Message Done
  • 13.11.2017 11:21:13 (1340) Connect from 192.168.xxx.xxx:52405
  • 13.11.2017 11:21:13 (1340) Version=51283
  • 13.11.2017 11:21:13 (1340) Pass ok
  • 13.11.2017 11:21:13 (1340) Login ok
  • 13.11.2017 11:21:14 Probe: Incoming Login Message from 192.168.xxx.xxx:52405 Name=SQL GID={4D7A-851B-428A79B8DF44}
  • 13.11.2017 11:21:14 Probe: Sending Welcome Message to 192.168.xxx.xxx:52405
  • 13.11.2017 11:21:14 Probe "SQL" at 192.168.xxx.xxx:52405 has connected
  • 13.11.2017 11:21:14 Login Message Done

The protocol is shown that status changes from Connected to Disconnected every 18-20 seconds.

Remote Probe Log:

  • 13.11.2017 11:29:10 State changed to disconnected (192.168.xxx.xxx:23560)
  • 13.11.2017 11:29:15 Connect from to 192.168.xxx.xxx:23560
  • 13.11.2017 11:29:15 TCP connected from 192.168.xxx.xxx:52437 to 192.168.xxx.xxx:23560
  • 13.11.2017 11:29:15 State changed to connected (192.168.xxx.xxx:23560)
  • 13.11.2017 11:29:15 Send Buffer: 129 13.11.2017 10:28:54 - 13.11.2017 10:28:59
  • 13.11.2017 11:29:15 Buffer Combined: 129
  • 13.11.2017 11:29:16 Connected
  • 13.11.2017 11:29:16 Send Login
  • 13.11.2017 11:29:16 Local: 13.11.2017 11:29:16 UTC: 13.11.2017 10:29:16
  • 13.11.2017 11:29:16 Login OK: Welcome to PRTG
  • 13.11.2017 11:29:37 State changed to disconnected (192.168.xxx.xxx:23560)
  • 13.11.2017 11:29:42 Connect from to 192.168.xxx.xxx:23560
  • 13.11.2017 11:29:42 TCP connected from 192.168.xxx.xxx:52438 to 192.168.xxx.xxx:23560
  • 13.11.2017 11:29:42 State changed to connected (192.168.xxx.xxx:23560)
  • 13.11.2017 11:29:42 Send Buffer: 131 13.11.2017 10:29:17 - 13.11.2017 10:29:21
  • 13.11.2017 11:29:42 Buffer Combined: 131
  • 13.11.2017 11:29:43 Connected
  • 13.11.2017 11:29:43 Send Login
  • 13.11.2017 11:29:43 Local: 13.11.2017 11:29:43 UTC: 13.11.2017 10:29:43
  • 13.11.2017 11:29:43 Login OK: Welcome to PRTG

System: Windows Server 2012 R2 .Net 4.7, Remote Probe on Hyper-V-Guest Remote Probe on other Hyper-V-Guest with SBS2011 work fine.

I try to reinstall remote probe, but no success. I have other Servers with Windows Server 2012 R2 and Hyper-V: no prblems after update to 17.4.33.3283.

Article Comments

Hello there,

The remote probe can only state that it notices the connection is not working, but in most cases can't reveal what went wrong, might be as well along the way on a firewall that drops packets for example. You need to examine the connection closer, especially in those cases where only one particular probe is affected.

Kind regards,

Erhard


Nov, 2017 - Permalink