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Chapter 2 Operating the Network Computer



Powering on the Network Computer

The first step is to power on your network computer. For network computer models with a separate logic module, power on both the display and the logic module. Figure 2-1 illustrates the location of the power switches on various models.

Figure 2-1    Power Switch Locations for Different Components.
If the network computer does not power on, refer to Chapter 5, Solving Power Problems for troubleshooting information.


The Network Computer Boot Process

When your network computer is powered on, it automatically begins booting. Booting means your network computer is locating and reading its start up files. The boot screen (Figure 2-2) appears on your display as the network computer is booting.

Figure 2-2    Network Computer Boot Screen.
During a normal boot, the network computer successfully locates and begins to read the boot files and the Percent of File Loaded slide bar appears on the boot screen. During a boot, pressing any key on the keyboard halts the boot process. Do not halt the boot unless directed by your system administrator.

If the slide bar does not appear, or, if your network computer displays a BOOT> prompt, the boot has halted. To try the boot again, type b and press Enter.

If the boot fails again, call your system administrator or refer to Chapter 5, Solving Power Problems for more information. To help troubleshoot the boot problem, write down any messages that were displayed.

Your network computer is attempting to boot from the network or from an optional Flash memory or ROM board (read only memory). You can tell how your network computer is trying to boot by looking at the Boot Method (BMETHOD=) status line on the boot screen. Possible values are ROM, TFTP, NFS, or MOP.


Logging in to the Network Computer

The next step is dependent on how your system administrator set up the network computer software on the host computer. Each login method is illustrated and described in the following sections to help you identify your login method.

After your network computer completes the boot process, one of the following should appear on your monitor:

If you cannot log in, refer to Chapter 5, Solving Power Problems for troubleshooting information.

The login method is determined by the Host Connect Method command. This command is set by the system administrator in the remote configuration file or through Setup on the network computer.

Logging in from the Root Weave

The root weave is a gray, patterned screen available on all network computers. When the network computer is ready for input, an X-shaped cursor appears on the screen. A network computer with the root weave and cursor is illustrated in Figure 2-3.

Figure 2-3    Root Weave with X Cursor.
To log in from the root weave, you need to manually start the Client Launcher.

Press Setup to bring up Client Launcher. Refer to Logging in with Client Launcher on page 2-5.

Logging in with Client Launcher

Client Launcher starts the local client you select from a menu. An arrow to the right of an entry indicates a submenu. In Figure 2-4, selecting Host Connections displays a sub-menu listing available host connections, such as Telnet or Cterm.

Your system administrator configures the Client Launcher to include the local clients you use most often. The Client Launcher on your network computer may list different clients and submenus than those that appear in Figure 2-4.

Figure 2-4    Client Launcher menu.
Use one of these methods to start a client from the Client Launcher:

If using Client Launcher to open a host connection, see the applicable section:

The Client Launcher appears automatically if it is specified in the remote configuration file. The applicable command is start (set to LAUNCHER).

Logging in with HostMenu

HostMenu is a window showing a list of host computer names and network addresses. A sample HostMenu is illustrated in Figure 2-5.

Notice the list buttons across the top (for example, XDMCP and VMS TDEnet). These buttons determine which type of log in list is displayed. The button pressed in indicates which list is currently displayed.

If there are more host names than can fit on one screen, use the mouse to select the Next Screen and Previous Screen buttons to page through the host names. If your host does not appear on the list, try clicking on the Update button or click on one of the list choice buttons to display a different list. If it still does not appear, contact your system administrator.

Figure 2-5    Example HostMenu.
To log in with HostMenu using either the mouse or the keyboard:


Table 2-1    Keyboard interface for HostMenu
To: Press:
Clear the contents of a text box Control-u keys
Move among the text boxes Tab key
Move to the first host in the list of hosts Home key
Move to the last host in the list of hosts End key
Move to a specific host in the list of hosts The first few letters of the hostname, or if using LAT, the first few letters of the service name
Page up and down through the list of hosts PgUp and PgDn keys
After selecting a log in host, some type of screen with a Login: prompt is displayed. If you selected the wrong host, press Ctrl-c to close the login box without logging in to the specified host.

For more information, see the applicable section:

Continue with Chapter 3, Using the Network Computer.

HostMenu appears automatically if it is set up as the connection method through the remote configuration file or through Setup. The applicable commands are: Host Connect Method (set to TekHostMenu) and Default Host List which determines the list that is initially displayed.

Logging in at a Login Prompt

If your system administrator has set up your network computer to directly log in to a specific host, some type of welcome screen with a login prompt is displayed. A welcome screen is also displayed for programs like HostMenu after a connection is made. Sample login screens for the UNIX host oregon and the VMS host IDAHO are illustrated in Figure 2-6 and Figure 2-7.

Figure 2-6    Example UNIX Login Screen.

Figure 2-7    Example VMS Login Screen.
To log in:

Continue with Chapter 3, Using the Network Computer.

Direct connections are specified by your system administrator through the remote configuration file or through Setup. The applicable commands for UNIX systems are: Host Connect Method (XDMCP Direct), and XDMCP Server (set to your host). The applicable commands for VMS systems are: Host Connect Method (set to VMS), VMS Autologin Transport (set to TDEnet), and VMS Autologin Tdenet Host (set to your host).

Logging in with Telnet

There are two ways to log in through Telnet, depending on whether your system administrator specified a default Telnet host for your network computer. If your network computer displays a Telnet> prompt like Figure 2-8, a default host has not been specified. In this case, you must open a connection before you can log in to the host.

Figure 2-8    Telnet Window Waiting for an Open Command.
To open a connection to your host computer:

Figure 2-9    Telnet Open Command.
Once a connection is made (Figure 2-10), either automatically or with the open command, you can log in:

Figure 2-10    Telnet Window With a Host Connection.
Continue with Chapter 3, Using the Network Computer.

Telnet connection and default Telnet host are specified by the system administrator through the remote configuration file or through Setup. The applicable commands are: Host Connect Method (set to Telnet), and Default Telnet Host (set to your host name or address).

Closing a Telnet Window

Press Ctrl-D at the login: prompt to return to the Telnet> prompt without logging in to the computer.

To close the Telnet window from the Telnet> prompt, type quit and press Enter.

Logging in with Cterm

There are two ways to log in through Cterm, depending on whether your system administrator specified a default Cterm host for your network computer. If your network computer displays an NSH> or CTERM> prompt like Figure 2-11, a default host has not been specified. In this case, you must specify a connection before you can log in to the host.

Figure 2-11    Cterm Window Waiting for an Set Host Command.
To open a connection to your computer:

Figure 2-12    Cterm Set Host Command.
Once a connection is made (Figure 2-13), either automatically or with the sethost command, you can log in:

Figure 2-13    Cterm Window With a Host Connection.
Continue with Chapter 3, Using the Network Computer.

Cterm connection and default Cterm host are specified by your system administrator through the remote configuration file or through Setup. The applicable commands are: Host Connect Method (set to Cterm), and Default Cterm Host (set to your host address).

Closing a Cterm Window

If you are at the Username: prompt and do not want to log in to the host, wait until the network connection times out and closes. A message appears on the screen when the connection closes. Typically it takes 60 seconds to time out.

To close the Cterm window from the NSH> or CTERM> prompt, type quit or exit and press Enter.

Logging in with WinDD

Two different WinDD screens can appear, depending on whether your system administrator specified an automatic connection to a default server. If your network computer displays the client screen illustrated in Figure 2-14, you must connect to a server before you can log in. The log in screen is illustrated in Figure 2-16.

Figure 2-14    WinDD Client Screen.

NOTE: Additional WinDD information can be found in the section titled WinDD on page 4-59 in Chapter 4, Using Advanced Features.

Selecting an Application Server

The WinDD client screen (Figure 2-14) displays a list of application servers your system administration defined for you. Use the mouse to select one of the servers from the list. If the application server you want to access is not on the list, enter the name or address in the Application Server: field and press Enter.

WinDD connection, default WinDD host, and Server entries are specified by your system administrator through the remote configuration file or through Setup. The applicable commands are: Host Connect Method (set to WinDD), Default WinDD Host (set to your default server address), WinDD Menu Entry (lists WinDD servers for HostMenu), and WinDD Host Entry (lists additional WinDD servers for the WinDD client screen).

Setting the WinDD Window Size

From the WinDD client screen, you can easily change your session attributes before you connect to a server.

The Configure button brings up the WinDD Resolution dialog box illustrated in Figure 2-15. The resolution determines the size and number of colors of the WinDD window. The resolution must be selected prior to making a connection to the application server and cannot be interactively changed until the connection has been closed. The Configure button performs the same function as the Options Configure pulldown menu choice.

Figure 2-15    WinDD Resolution Dialog Box.

Logging in

Once you have made a connection, you are prompted to press Ctrl-Alt-Del to bring up the log in screen. The log in screen is illustrated in Figure 2-16. If you want to specify a different server or return to the Client screen for any reason, select Options Log On. The Options Log On function switches between the Client screen and the Log in screen after a server connection is made.

Figure 2-16    WinDD Log In Screen.
  1. Enter your user name.
  2. Use the mouse or Tab key to advance to the Password line.
  3. Enter your password.
  4. Press Enter or click on OK.

Closing a WinDD Session

Close your Windows NT session as usual, by closing each of your applications, then selecting File Logoff from the Program Manager.

If auto reconnect is on, the WinDD log in screen is displayed. If auto reconnect is off, the WinDD client screen appears. Select one of the following methods to close the WinDD session:

Logging in with Serial Port 0 or 1

There are several ways to connect to a host through the Serial Port window (Figure 2-17). Check with your system administrator to find out which options you can use on your particular network computer.

You use Serial Port 0 or 1 depending on which port your serial cable is plugged into on the back of your network computer logic module.

If you have problems establishing communications, contact your system administrator.

Figure 2-17    Serial Port Window Waiting for Command.

Closing a Serial Port Window

To close a Serial Port window without logging in, press Enter and then type  ~.  a (~) tilde followed by a (.) period.

Entering Serial Parameters with Setup

The parameters on the host computer must match the parameters of your network computer's serial ports in order for serial communications to work. Your system administrator can set them up for you in the remote configuration file, or tell you what parameters need to be set so you can enter them in Setup.

To verify or change your serial parameters:

  1. Select Setup from the Client Launcher. If you need a refresher on the terminology used in these procedures, refer back to Chapter 1, Terminology.
  2. Drag on the Configuration Summaries menu and release on Peripheral Ports.
  3. Determine if your cable is connected to Serial Port 0 or 1 by checking the back of the integrated network computer or the separate logic module.
  4. Verify the parameters for the port are set to the values obtained from your system administrator. Change them if necessary.
  5. Select the Return to Main Menu button.
  6. Select the Save Current Settings button.
  7. Select the Exit Setup button.

Serial Communications with No Protocol

From the Serial Port window pictured in Figure 2-17:

Continue with Chapter 3, Using the Network Computer.

Serial Port connection is specified by the system administrator through the remote configuration file or through Setup. The applicable command is: Host Connect Method (set to Serial Port 0 or 1).

Serial Communications with Serial Xpress (SXp)

A separate manual is available for Serial Xpress. Refer to the Related Documentation section in the Preface for more information.

From the Serial Port window pictured in Figure 2-17:

Figure 2-18    Starting SXp on the Host (no modem).
The Serial Port window closes and a Serial Session window is opened for you.

Continue with Chapter 3, Using the Network Computer.

Serial Port connection can be specified by the system administrator through the remote configuration file or through Setup. The applicable command is: Host Connect Method (set to Serial Port 0 or 1).

Logging in with LAT

If your network computer displays a LAT> prompt like Figure 2-19, you are set up to log in through a Local Area Transport supported in a DECnet environment. To login, you must connect to a LAT service.

Figure 2-19    LAT Window Waiting for an Connect Command.
To connect to a service:

Figure 2-20    LAT Connect Command.
If it is a password protected service, enter the password at the Password: prompt. You have up to three tries to enter the password before the connection attempt fails.

Once a connection is made (Figure 2-21) you can log in:

Figure 2-21    LAT Window With a Service Connection.
Continue with Chapter 3, Using the Network Computer.

LAT connection can be specified by the system administrator through the remote configuration file or through Setup. The applicable command is: Host Connect Method (set to LAT).

Closing a LAT Window

If you are at the Username: prompt and do not want to log in to the host, wait until the network connection times out and closes. A message appears on the screen when the connection closes. Typically it takes 60 seconds to time out.

To close the LAT window from the LAT> prompt, type quit or exit and press Enter.



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