Configuring the Terminal Concentrator

This section describes the procedure for configuring the terminal concentrator's network addresses and ports.

How to Configure the Terminal Concentrator

From the administrative console, add the following entry to the /etc/remote file.
```
tc:\
:dv=/dev/term/a:br#9600:
```
Verify that the server and the terminal concentrator are powered on and that the cabinet keyswitch (if applicable) is in the ON position.
Establish a connection to the terminal concentrator's serial port:
```
# tip tc
```
Hold down the terminal concentrator Test button (Figure 2-6) until the power LED flashes (about three seconds), then release the Test button.
Hold down the terminal concentrator Test button again for one second, then release it.
The terminal concentrator performs a self-test, which lasts about 30 seconds. Messages display on the administrative console. If the network connection is not found, press the Q key to stop the message.

Figure 2-6 Terminal Concentrator Test Button and LEDs

Observe the terminal concentrator front-panel LEDs and use the information in the following table to decide your course of action.

Power (Green)	Unit (Green)	Net (Green)	Attn (Amber)	Load (Green)	Active (Green)	Test (Orange)
ON	ON	ON	ON	OFF	Intermittent blinking	ON

If the front-panel LEDs light up as shown in the table above and the administrative console displays a monitor:: prompt, go to Step 7.

If the front-panel LEDs do not light up as shown in the table above, or the administrative console does not display the prompt monitor::, use the following table and the documentation that shipped with your terminal concentrator to troubleshoot the problem.

Mode	Power (Green)	Unit (Green)	Net (Green)	Attn (Amber)	Load (Green)	Active (Green)
Hardware failure	ON	Blinking	OFF	Blinking	OFF	OFF
Network test failure	ON	ON	Blinking	OFF	OFF	Intermittent blinking
Network test aborted, or net command failed	ON	ON	OFF	Blinking	OFF	Intermittent blinking
Booted wrong image	ON	ON	ON	Blinking	OFF	OFF
Other failure	One or more Status LEDs (1-8) are ON

Use the addr command to assign an IP address, subnet mask, and network address to the terminal concentrator.

In the following example (Class B network, Class C subnet), the broadcast address is the terminal concentrator's address with the host portion set to 255 (all binary 1's).

monitor:: addr
Enter Internet address [<uninitialized>]:: 172.25.80.6
 Internet address: 172.25.80.6
Enter Subnet mask [255.255.0.0]:: 255.255.255.0
 Subnet mask: 255.255.255.0
Enter Preferred load host Internet address [<any host>]:: 172.25.80.6
*** Warning: Load host and Internet address are the same ***
 Preferred load host address: 172.25.80.6
Enter Broadcast address [0.0.0.0]:: 172.25.80.255
 Broadcast address: 172.25.80.255
Enter Preferred dump address [0.0.0.0]:: 172.25.80.6
 Preferred dump address: 172.25.80.6
Select type of IP packet encapsulation (ieee802/ethernet) [<ethernet>]:: 
         Type of IP packet encapsulation: <ethernet>
Load Broadcast Y/N [Y]:: n
            Load Broadcast: N

After you finish the addr session, power-cycle the terminal concentrator.
The Load and Active LEDs should briefly blink, then the Load LED should turn off.
Use the ping(1M) command to confirm that the network connection works.
Exit the tip utility by pressing Return and typing a tilde, followed by a period.
```
<Return>~.
~
[EOT]
#
```

Next Steps

Go to How to Set Terminal Concentrator Port Parameters.

How to Set Terminal Concentrator Port Parameters

This procedure explains how to determine if the port type variable must be set and how to set this variable.

The port type parameter must be set to dial_in. If the parameter is set to hardwired, the cluster console might be unable to detect when a port is already in use.

Locate Oracle's Sun serial number label on the top panel of the terminal concentrator (Figure 2-7).
Check if the serial number is in the lower serial-number range. The serial number consists of 7 digits, followed by a dash and 10 more digits.
- If the numbers after the dash start with at least 9520, the port type variable is set correctly. Go to Step 4.
- If the numbers after the dash start with 9519 or lower, you must change the port type variable. Go to Step 3.
Figure 2-7 Determining the Version From the Serial Number Label

Use the administrative console to change the port type variable to dial_in by setting the port parameters, then reboot the terminal concentrator as shown in the following example.

The boot command causes the changes to take effect. The terminal concentrator is unavailable for approximately one minute.

admin-ws# telnet tc-name
Trying terminal concentrator IP address 
Connected to tc-name
Escape character is "^]".
Rotaries Defined:
    cli                              -
Enter Annex port name or number: cli
Annex Command Line Interpreter  *  Copyright 1991 Xylogics, Inc.
annex: su
Password: password
(The default password is the terminal concentrator IP address)
annex# admin
Annex administration MICRO-XL-UX R7.0.1, 8 ports
admin : set port=1-8 type dial_in imask_7bits Y
  You may need to reset the appropriate port, Annex subsystem or
        reboot the Annex for changes to take effect.
admin : set port=1-8 mode slave
admin : quit
annex# boot
bootfile:  <return>
warning:   <return>

Note - Ensure that the terminal concentrator is powered on and has completed the boot process before you proceed.

Verify that you can log in from the administrative console to the consoles of each node.
For information about how to connect to the nodes' consoles, see How to Connect to a Node's Console Through the Terminal Concentrator.

How to Correct a Port Configuration Access Error

A misconfigured port that does not accept network connections might return a Connect: Connection refused message when you use telnet(1). Use the following procedure to correct the port configuration.

Connect to the terminal concentrator without specifying a port.
```
# telnet tc-name
```
tc-name

Specifies the hostname of the terminal concentrator
Press Return again after you make the connection, then specify the port number.
```
Trying ip_address ..
Connected to 192.9.200.1
Escape character is "^]".
...
[RETURN]
Rotaries Defined:
      cli                              -
Enter Annex port name or number: 2
```
- If you see the message Port(s) busy, do you wish to wait? (y/n), answer n and go to How to Reset a Terminal Concentrator Port.
- If you see the message Error: Permission denied, the port mode is configured incorrectly to the command-line interface and must be set to slave. Go to Step 3.
Select the terminal concentrator's command-line interface.
```
...
Enter Annex port name or number: cli
annex:
```
Type the su command and password.
The default password is the terminal concentrator's IP address.
```
annex: su
Password:
```

Reset the port.

annex# admin
Annex administration MICRO-XL-UX R7.0.1, 8 ports
admin: port 2
admin: set port mode slave
    You may need to reset the appropriate port, Annex subsystem or
    reboot the Annex for changes to take effect.
admin: reset 2

Example 2-1 Correcting a Terminal Concentrator Port Configuration Access Error

The following example shows how to correct an access error on the terminal concentrator port 4.

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# admin
Annex administration MICRO-XL-UX R7.0.1, 8 ports
admin: port 4
admin: set port mode slave
    You may need to reset the appropriate port, Annex subsystem or
    reboot the Annex for changes to take effect.
admin: reset 4

How to Establish a Default Route for the Terminal Concentrator

Note - This procedure is optional. By setting a default route, you prevent possible problems with routing table overflows (see the following paragraphs). Routing table overflow is not a problem for connections that are made from a host that resides on the same network as the terminal concentrator.

A routing table overflow in the terminal concentrator can cause network connections to be intermittent or lost altogether. Symptoms include connection timeouts and routes that are reestablished, then disappear, even though the terminal concentrator itself has not rebooted.

The following procedure fixes this problem by establishing a default route within the terminal concentrator. To preserve the default route within the terminal concentrator, you must also disable the routed feature.

Connect to the terminal concentrator.
```
# telnet tc-name
```
tc-name

Specifies the name of the terminal concentrator
Press Return again after you make the connection, then select the command-line interface to connect to the terminal concentrator.
```
...
Enter Annex port name or number: cliannex:
```
Type the su command and password.
The default password is the terminal concentrator's IP address.
```
annex: su
Password:
```
Start the editor to change the config.annex file.
```
annex# edit config.annex
```
Note - The keyboard commands for this editor are Control-W: save and exit, Control-X: exit, Control-F: page down, and Control-B: page up.

The config.annex file, which is created in the terminal concentrator's EEPROM file system, defines the default route. The config.annex file can also define rotaries that enable a symbolic name to be used instead of a port number.
Add the following lines to the file.
Substitute the appropriate IP address for your default router.
```
%gateway
net default gateway 192.9.200.2 metric 1 active ^W
```
Disable the local routed feature.
```
annex# admin set annex routed n
```
Reboot the terminal concentrator.
```
annex# boot
bootfile: <reboot>
warning: <return>
```
While the terminal concentrator is rebooting, you cannot access the node consoles.

Example 2-2 Establishing a Default Route for the Terminal Concentrator

The following example shows how to establish a default route for the terminal concentrator.

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: edit config.annex
(Editor starts)
Ctrl-W:save and exit Ctrl-X:exit Ctrl-F:page down Ctrl-B:page up
%gateway
net default gateway 192.9.200.2 metric 1 active ^W
annex# admin set annex routed n
You may need to reset the appropriate port, Annex subsystem or
reboot the Annex for changes to take effect.
annex# boot

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