Chapter 3. Getting Started with IRIS SNA LU 6.2

This chapter is designed to quickly get you started using IRIS SNA LU 6.2. It presents a non-technical Quickstart facility that demonstrates how to use the menus to perform such basic tasks as setting a configuration and transferring a file.

After you feel comfortable with the menus, go to Chapter 4, “IRIS SNA LU 6.2 Menu Options,” for the technical information needed to make full use of the LU 6.2 menu options.

This chapter is written primarily for the end users who will operate the product. Programmers may elect to walk through the Quickstart to become familiar with the menus, or go to Chapter 2, “Programming with the SNA SERVER Verbs,” of the IRIS SNA SERVER Programming Guide, which contains information for writing application programs.

Quickstart: Configuration and Set-up

This Quickstart provides a non-technical introduction to IRIS SNA LU 6.2 to familiarize you with the menus and show how to perform basic operations. Although you could skip this section and go directly to the next chapter, which contains the detailed technical information needed to set up configurations, take the time to go through the steps, complete the Quickstart, and transfer a file.

Note: Before you begin, be sure the system administrator has properly installed the IRIS SNA SERVER on your system.

IRIS SNA LU 6.2 is delivered with the following configurations already available:

  • QLU62P IRIX to IRIX (partner to QLU62S)

  • QLU62S IRIX to IRIX (partner to QLU62P)

  • QHOST IRIX to IBM Mainframe (CICS)

  • QLOOP IRIX to IRIX (SDLC loopback)

For this demonstration, use the supplied QLOOP configuration to send a file to yourself. Figure 3-1 presents an overview of the steps in this Quickstart.

It is not within the scope of this Quickstart to display all screens. The objective of the Quickstart is to familiarize you with the menu system and to provide a general outline of the procedures for transferring files with IRIS SNA LU 6.2.

Step 1: Activate the Network

The node processes must be active prior to starting a session. The following information is provided in case the system administrator has not activated them. If the network has been activated, continue to Step 2.

First, make certain lines 1 and 2 are connected via modem eliminator. Then, access the Network Operations Menu by entering at the IRIX shell prompt:


which displays the Network Operations Menu window shown in Figure 3-2:

Figure 3-1. Network Operations Menu

Menus, which appear as windows, present a list of options, each distinguished with a letter. To select a menu option, enter the letter of the option (it will appear on your screen in the enter letter: field) and press <enter>.

Each menu contains three standard options: Exit (X), Help (?), and
Shell (!). Exit returns the previous menu. Help displays on-line information about the options on the menu you are using. The Shell option spawns a shell in which to execute shell commands.

Three additional options appear on various screens:

  • Redisplay (.)

  • Prev (<)

  • Next (>)

The Redisplay option updates screens that provide dynamic, as opposed to static, information. The Prev and Next options show a previous or next display, respectively, if the information presented occupies more than one screen.

Note: Because this chapter is designed only to introduce you to the operation of the program, the options of each menu are not described in detail. For further information, see Chapter 4.

Before activating the network, select option [f] to set your current configuration. For this demonstration enter QLOOP from the list of available configurations. The screen reappears to indicate that QLOOP is now set as your current working configuration. You are now ready to activate the network.

Select option [a] to activate the IRIS SNA SERVER. When asked to confirm your actions; enter a, then 1 for YES. Activating the IRIS SNA SERVER takes approximately one minute.

Select option [b] to activate the Physical Unit.

Select option [c] to activate the Logical Unit. When asked for the Local LU name, enter a, then type QLOOP1, which is the name of the local LU for the QLOOP configuration. When asked for the Remote LU name, enter a, then type QLOOP2, the name of the remote LU for the QLOOP configuration.

Select option [d] to activate the line. When asked for the line name, enter a, then type LINE1, which is the name of the first line for the QLOOP configuration. When asked again for the line name, enter a, then type LINE2, the name of the second line for the QLOOP configuration.

The Network Operations Menu displays a <message(s) waiting> indicator at the right of the screen. Select option [h], Display Messages. The display of the following information indicates the network has been properly activated (Figure 3-3).

Figure 3-2. Node Operator Messages Screen

Look for the message indicating that the lines and stations have been successfully contacted. The network is now operational. Enter X to return to the IRIS SNA SERVER Main Menu.

Step 2: Select the IRIS SNA LU 6.2 Main Menu.

To access the Main Menu of IRIS SNA LU 6.2 (Figure 3-4), enter at the IRIX prompt:


Figure 3-3. IRIS SNA LU 6.2 Main Menu

The IRIS SNA LU 6.2 Main Menu contains two options: option [a] LU 6.2 Session Operations Menu enables you to set your current configuration and to control sessions; option [b] LU 6.2 Application Menu enables you to transfer a file.

Step 3: Activate the Session.

From the IRIS SNA LU 6.2 Main Menu, select option [a], LU 6.2 Session Operations Menu. The screen shown in Figure 3-5 is displayed.

Figure 3-4. LU 6-2 Session Operations Menu

Before a session can be activated, initialize the Service Manager Mode. Select option [a] to display the Initialize Service Manager Mode screen (Figure 3-6).

Figure 3-5. Initialize Service Manager Mode Screen

In the Local LU Name field, type QLOOP1, the name of the local LU in the QLOOP configuration. Press <enter>. When prompted for the remote LU name, enter QLOOP2, the name of the remote LU in our example.

Repeat this process to initialize the service manager mode for your partner. Select option [a], but this time, enter QLOOP2 for the local name and QLOOP1 for the remote name. When you see the message, Mode Initialization Complete, press <enter> to continue.

Next, select option [b] to initialize session limits. The screen in Figure 3-7 appears.

Figure 3-6. Initialize Session Limits Screen

When asked to give the local LU and remote LU names, enter QLOOP1 and QLOOP2, respectively. The next prompt is for the mode name. Enter ANY, the QLOOP mode configuration name. Next, respond to the prompt to enter the session limits, beginning with the maximum session limits. Enter 4. For the minimum first speakers, enter 2. For the minimum bidders, enter 2. When the message Mode Initialization Complete appears, press <enter> to continue.

Initializing a mode configured for auto-initiated sessions automatically activates those sessions. If the mode does not have auto-initiated sessions, select option [c] to activate the session.

Before continuing further, verify whether or not your session is active. Without an active session, file transfer is impossible. Verify by selecting option [i] LU Status Display. This screen appears (Figure 3-8):

Figure 3-7. LU Status Display Screeen

If a session is active, the letter A appears next to the LU name, as it does in this screen (A QLOOP2 and A QLOOP1). You are now ready to transfer a file.

Quickstart: File Transfer

To transfer a file, enter X to exit the LU 6.2 Sessions Operations Menu and return to the IRIS SNA LU 6.2 Main Menu. Then select option
[b] Application Menu from the Main Menu. The next screen appears (Figure 3-9):

Figure 3-8. LU 6.2 Application Menu

Since the QLOOP configuration resides in an IRIX-to-IRIX environment, select option [a] to view the screen shown in Figure 3-10.

Figure 3-9. File Transfer Screen

First, select option [a] to place the cursor in the Local LU Name field. Type the local LU name, which for our local loopback configuration is QLOOP1.

Second, select option [b] and enter the remote LU name, QLOOP2.

Third, select option [c] and enter ANY as the demonstration's mode name.

Finally, select option [d] and enter the name of the file to send, and option [e] to name the received file.

Note: Be certain the permissions of both files permit transfer.

LU 6.2 Users at TCP/IP Nodes

Users who intend to execute SNA LU 6.2 transaction programs (such as the supplied file transfer program s2_fsnd) from a non-SNA gateway node must perform these steps:

Step 1: Contact your System Administrator.

Ask your System Administrator for the following information:

  • System ID of the IRIS SNA gateway

  • Local LU name

  • Remote LU name

  • Mode name

Step 2: Verify that the system is running.

Be certain that the IRIS SNA SERVER is running and that SNA LU 6.2 sessions have been initialized.

Step 3: Open an SNA LU 6.2 Application Window.

To display the LU 6.2 Application Menu window, select option
[b] LU 6.2 Application Menu from the IRIS SNA LU 6.2 Main Menu.

Step 4: Transfer a File.

Select option [a] Transfer a File to UNIX System. Enter the information obtained from the System Administrator (see Step 1) into the appropriate fields of the window that appears.

Enter the name of the file to send and the name it is to be received as by the partner.