ServerNet Cluster 6780 Planning and Installation Guide (G06.29+, H06.06+, J06.03+)

Contents

ServerNet Cluster 6780 Planning and Installation Guide—527301-008

10. Troubleshooting

Task 6: Check Operations 9-12

Task 7: Connect the Additional Nodes 9-12

Task 8: Check Operations 9-12

Task 9: Repeat Tasks 2 Through 8 for the Other Fabric 9-12

Task 10: Reenable OSM Alarms 9-13

Moving a Node 9-13

Alerts 9-13

Moving the Cable Connected Between a Node and 6780 Switch 9-13

Changing the Hardware in a Node Connected to a ServerNet Cluster 9-14

Expanding or Reducing a NonStop S-Series Server 9-14

10. Troubleshooting

Symptoms 10-2

Green Power-On LED on a Switch Is Not Lit 10-2

Green Link-Alive LED Is Not Lit 10-2

Yellow Fault LED on a Switch Is Lit 10-3

Yellow Fault LED on a Switch Is Blinking 10-3

An OSM Alarm on the External Fabric Is Generated 10-3

ServerNet Node Numbers Are Not Consistent 10-4

ServerNet Remote Node Name Does Not Display 10-4

Recovery Operations 10-5

Enabling Automatic Expand-Over-ServerNet Line-Handler Generation 10-5

Reseating a Fiber-Optic Cable 10-5

Correcting a Mixed Globally Unique ID (GUID) 10-6

Restoring Connectivity to a Node 10-7

Switching the SANMAN Primary and Backup Processes 10-8

Switching the SNETMON Primary and Backup Processes 10-8

Configuring the Expand-Over-ServerNet Line-Handler Processes and Lines 10-9

Starting Required Processes and Subsystems 10-9

Fallback Procedures 10-10

Fallback to a Previous RVU 10-10

Fallback to Previous SPRs 10-10

11. Starting and Stopping ServerNet Cluster Processes and

Subsystems

Stopping the ServerNet Cluster Subsystem 11-2

Stopping Expand-Over-ServerNet Lines 11-3

Starting the ServerNet Cluster Subsystem 11-4

Starting the External ServerNet Fabric 11-4