CONTENTS Title Page Copyright Page Preface 1 Solving DECnet/SNA Gateway-ST Problems 1.1 Hardware Problems 1.2 Initialization Problems 1.3 DECnet Problems 1.4 Session Problems 2 Using Loopback Tests 2.1 ncp Loopback Tests 2.1.1 Remote Loopback Test 2.1.2 Executor Loopback Test 2.1.3 Circuit Level Loopback Test 2.2 snancp Loopback Tests 2.2.1 Controller Loopback Test 2.2.2 Cable Loopback Test 2.2.3 Modem Loopback Tests 2.3 DEC MicroServer Loopback Tests 2.3.1 Loopback Points 2.3.2 General Test Procedure 2.3.3 The test Command 2.3.4 Sample Test Procedure 2.3.4.1 Connect to the DEC MicroServer 2.3.4.2 Stop the System Software 2.3.4.3 DEC MicroServer I/O Port Testing 2.3.4.4 Adapter Cable and Modem Cable Testing 2.3.4.5 Local Modem Testing 2.3.4.5.1 Modems That Recognize Local Loop 2.3.4.5.2 Manually Controlled Modems 2.3.4.5.3 Modems with No Test Facilities 2.3.4.6 Remote Modem Testing 2.3.4.7 Start the System Software 2.3.5 Additional Procedures 3 Traces 3.1 Gateway Management Traces 3.1.1 Types of Traces 3.1.1.1 Circuit Level Traces 3.1.1.2 Physical Unit Level Traces 3.1.1.3 Session Level Traces 3.2 IBM Traces 3.2.1 Types of Traces 3.2.1.1 VTAM Buffer Contents Trace 3.2.1.2 VTAM I/O Trace 3.2.1.3 Generalized PIU Trace 3.2.1.4 VTAM Line Trace 3.2.1.5 SDAID Trace Program 3.2.1.6 VTAM Internal Trace 4 Up-Line Dumps 5 Reporting Your Problems 5.1 Gathering Information 5.2 Reporting Problems to Digital Equipment Corporation A Interpreting System Messages A.1 Interpreting Event Messages A.1.1 Event Classes A.1.2 Event Types A.2 Interpreting Error Messages A.2.1 ULTRIX and DECnet-ULTRIX Error Messages A.2.2 Gateway Utility Error Messages A.2.3 IBM SNA Sense Codes B Log File of a Gateway Load C The DEC MicroServer Display Panel C.1 Power-Up Sequence C.1.1 Normal Power-Up Sequence Without Retry C.1.2 Power-Up Sequence Including Retry C.2 Dump Sequence C.2.1 Normal Dump Sequence Without Retry C.2.2 Dump Sequence with Retry C.3 Halt Codes C.4 Error Codes D DEC MicroServer Facilities for Problem Solving D.1 Command Summary D.2 Connecting to the DEC MicroServer D.3 Detaching the Console D.4 Halting the Software D.5 Testing the DEC MicroServer D.5.1 Data Loopback Tests D.5.2 Modem Signal Tests D.5.3 Cable Type Tests D.5.4 Soak Testing the DEC MicroServer D.6 Monitoring the DEC MicroServer Status D.7 Reloading the System D.8 Dumping the Contents of Memory D.9 Console Password D.9.1 Setting a Password D.9.2 Clearing the Service Password D.10 Getting Help E DEC MicroServer Configuration Guidelines E.1 Allocation of the Synchronous Ports E.2 Other Configurations F Adapter Cable Pin Signals FIGURES 1 DECnet/SNA Gateway-ST Manuals 1-1 Setting the Voltage Selector 1-2 Checking the Voltage Selector 1-3 Loop Between Nodes on Either Side of the DEC MicroServer 2-1 Loopback Tests 2-2 Running ncp Tests 2-3 Running snancp Tests 2-4 Parts of a Synchronous Communications Link 5-1 Sample SPR Form C-1 DEC MicroServer Display Panel D-1 Loopback Points D-2 Loopback Points for the Modem Signal Test TABLES 2-1 Faults Indicated by Loopback Testing 5-1 Documenting a Problem A-1 Event Classes and Location A-2 Sample IBM Sense Codes C-1 Power-Up Display Values C-2 Dump Display Values C-3 Error Code Values D-1 Summary of Remote Console Commands E-1 The DEC MicroServer-SP Port E-2 DEC MicroServer Ports F-1 V.35 34-Way Square Connector (Male) F-2 V.24/RS-232-D 25-Way D-Type Adapter Cable (Male) F-3 V.24/RS-232-C 25-Way D-Type Adapter (Male and Female)