How to Reset a Terminal Concentrator Port

When a port on the terminal concentrator is busy, you can reset the port to disconnect its 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 Return again after you make 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 2–4 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