OpenVMS Cluster Systems - OpenVMS Systems - HP

D Sample Programs for LAN Control
D.1 Purpose of Programs . ........................................ D–1
D.2 Starting the NISCA Protocol . . . ................................ D–1
D.2.1 Start the Protocol . ........................................ D–2
D.3 Stopping the NISCA Protocol . . . ................................ D–2
D.3.1 Stop the Protocol . ........................................ D–3
D.3.2 Verify Successful Execution . ................................ D–3
D.4 Analyzing Network Failures . . . ................................ D–3
D.4.1 Failure Analysis . . ........................................ D–3
D.4.2 How the LAVC$FAILURE_ANALYSIS Program Works ............ D–4
D.5 Using the Network Failure Analysis Program ...................... D–4
D.5.1 Create a Network Diagram . ................................ D–5
D.5.2 Edit the Source File ....................................... D–7
D.5.3 Assemble and Link the Program ............................. D–9
D.5.4 Modify Startup Files ...................................... D–10
D.5.5 Execute the Program ...................................... D–10
D.5.6 Modify MODPARAMS.DAT . ................................ D–10
D.5.7 Test the Program . ........................................ D–10
D.5.8 Display Suspect Components ................................ D–10
E Subroutines for LAN Control
E.1 Introduction ................................................ E–1
E.1.1 Purpose of the Subroutines . ................................ E–1
E.2 Starting the NISCA Protocol . . . ................................ E–1
E.2.1 Status . ................................................ E–2
E.2.2 Error Messages . . ........................................ E–2
E.3 Stopping the NISCA Protocol . . . ................................ E–3
E.3.1 Status . ................................................ E–3
E.3.2 Error Messages . . ........................................ E–4
E.4 Creating a Representation of a Network Component . . ............... E–5
E.4.1 Status . ................................................ E–6
E.4.2 Error Messages . . ........................................ E–6
E.5 Creating a Network Component List ............................. E–7
E.5.1 Status . ................................................ E–8
E.5.2 Error Messages . . ........................................ E–8
E.6 Starting Network Component Failure Analysis ..................... E–9
E.6.1 Status . ................................................ E–9
E.6.2 Error Messages . . ........................................ E–9
E.7 Stopping Network Component Failure Analysis ..................... E–10
E.7.1 Status . ................................................ E–10
E.7.2 Error Messages . . ........................................ E–10
F Troubleshooting the NISCA Protocol
F.1 How NISCA Fits into the SCA . . ................................ F–1
F.1.1 SCA Protocols . . . ........................................ F–1
F.1.2 Paths Used for Communication .............................. F–4
F.1.3 PEDRIVER ............................................. F–4
F.2 Addressing LAN Communication Problems . ....................... F–5
F.2.1 Symptoms .............................................. F–5
F.2.2 Traffic Control . . . ........................................ F–5
F.2.3 Excessive Packet Losses on LAN Paths . ....................... F–5
F.2.4 Preliminary Network Diagnosis .............................. F–6
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