How to Reset a Terminal Concentrator Port

When a port on the terminal concentrator is busy, that is, in use by a user, you can reset the port to disconnect that user. This procedure is useful if you need to perform an administrative task on the busy port.

A busy port returns the following message when you try to connect to the terminal concentrator.

telnet: Unable to connect to remote host: Connection refused

If you use the port selector, you might see a port busy message. See "How to Correct a Port Configuration Access Error" for details on the port busy message.

1. Connect to the terminal concentrator port.

   # telnet tc_name

   tc_name

   Specifies the name of the terminal concentrator

2. Press an extra Return after making the connection and select the command-line interface to connect to the terminal concentrator.

   ... Enter Annex port name or number: cli annex:

3. Type the su command and password.

   The default password is the terminal concentrator's IP address.

   annex: su Password:

4. Determine which port to reset.

   The who command shows ports that are in use.

   annex# who

5. Reset the port that is in use.

   annex# admin reset port_number

6. Disconnect from the terminal concentrator.

   annex# hangup

   You can now connect to the port.

Example--Resetting a Terminal Concentrator Connection

The following example shows how to reset the terminal concentrator connection on port 2.

admin-ws# telnet tc1
Trying 192.9.200.1 ...
Connected to 192.9.200.1.
Escape character is '^]'.
[Return]
...
Enter Annex port name or number: cli
...
annex: su
Password: root_password
annex: who
Port			What			User			Location					When			Idle			Address
2			PSVR			---			---					---			1:27			192.9.75.12
v1			CLI			---			---					---						192.9.76.10
annex# admin reset 2
annex# hangup