Verifying a VTAM network

When you implement a VTAM® network, verify that your VTAM network functions properly.

Before you begin

Make sure that the status of all resources in your network is inactive.

To verify that your VTAM network functions properly, do the following steps:

Start VTAM and the appropriate trace facility (such as GTF).
Activate a channel-attachment major node, begin tracing, and activate lines and peripheral physical units.
Activate an NCP, begin tracing and intensive mode error recording, and verify that you can dump the NCP.
Start the NetView® program, if it is installed.
Activate a switched major node, and begin tracing for the physical units.
Start the VTAM or host subsystem application programs.
Start VTAM traces, and activate the logical units at the peripheral physical unit.
Use DISPLAY commands to verify the following information:
- Peripheral terminals and links
- Route structure
- Sessions between application programs and logical units
Activate and verify additional physical units and NCPs.
Simulate normal operation with all physical units.
Try backup and recovery procedures.
Halt VTAM.

For specific information about how to perform these steps and for the syntax of operator commands, see z/OS Communications Server: SNA Operation. If these steps do not yield the expected results, check the definition statements for the resources that are affected. If this does not solve the problem, see z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures.