Port being stuck in PortServer TS 16

Serial Servers & Infrastructure Mangement Portserver TS
1

We use the PortServer TS 16 for serial ports connection. Sometimes, the serial port seems stuck in the PortServer. Below are some details when the issue happens:

  1. The port 6 is confused to be connected from telnet command;
  2. Checking the GUI in PortServer, it shows in the “Connections” that the Port 6 is listed in multiple columns in Active Network Connections being connected from a same server named as TEST_SERVER;
  3. Issuing “lsof -i -P” command on the server TEST_SERVER, there’s no open connections showing that this TEST_SERVER server is connected to port 6.

So is it the port 6 stuck in PortServer? Any possible reasons would cause this issue? Thanks.

Note that clicking “Disconnecting” in the “Action” column can often solve the issue.

2

Could anyone help with the issue here? Thanks in advance!