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Sun Datacenter InfiniBand Switch 36 HTML Document Collection for Firmware Version 2.1 |
USB Management Connector and Pins
InfiniBand QSFP Connector and Pins
Understanding InfiniBand Cabling
Preparing to Install the Switch
Suggested Tools for Installation
Antistatic Precautions for Installation
Verify Shipping Carton Contents
Assemble the Optical Fiber InfiniBand Cables
Install the Switch in the Rack
Verifying the InfiniBand Fabric
Network Management Troubleshooting Guidelines
Understanding Routing Through the Switch
Understanding Administrative Commands
Administering the I4 Switch Chip
Controlling the I4 Switch Chip
Administering the Subnet Manager
Controlling the Subnet Manager
Configuring Secure Fabric Management
Administering the InfiniBand Fabric
Monitoring the InfiniBand Fabric
Controlling the InfiniBand Fabric
Understanding Oracle ILOM on the Switch
Understanding Oracle ILOM Targets
Administering Oracle ILOM (CLI)
Accessing Oracle ILOM From the CLI
Switching Between the Oracle ILOM Shell and the Linux Shell
Monitoring Oracle ILOM Targets (CLI)
Controlling Oracle ILOM Targets (CLI)
Upgrading the Switch Firmware Through Oracle ILOM (CLI)
Administering Oracle ILOM (Web)
Access Oracle ILOM From the Web Interface
Monitoring Oracle ILOM Targets (Web)
Controlling Oracle ILOM Targets (Web)
Upgrade the Switch Firmware (Web)
Accessing the Rear Panel Diagram
Accessing Status Pane Information
Monitoring Parameters and Status
Administering Oracle ILOM (SNMP)
Monitoring Oracle ILOM Targets (SNMP)
Controlling Oracle ILOM Targets (SNMP)
Display the Sensor States (IPMI)
Display the Sensor Information (IPMI)
Display the System Event Log (IPMI)
Display FRU ID Information (IPMI)
Display Switch Status LED States (IPMI)
Disable the Locator LED (IPMI)
Understanding Oracle ILOM Commands
Check NET MGT Port Status LEDs
Check Power Supply Status LEDs
Display Faulty Components (fault_state)
Display Faulty Components (/SP/faultmgmt)
Identify Faults in the Oracle ILOM Event Log
Determining the Alarm State of a Component or System
Display the General Alarm State of Systems and Components
Oracle ILOM Target Alarm States
Display Oracle ILOM Sensor Status
Determine Oracle ILOM Sensor Target Types
Evaluating a Voltage Sensor Alarm
Evaluating a Temperature Sensor Alarm
Evaluating a Speed Sensor Alarm
Evaluating a State Sensor Alarm
Evaluating a Presence Sensor Alarm
Presence Sensor Alarm Conditions
Access the Oracle ILOM CLI (NET MGT Port)
Enter the Restricted Linux Shell
Exit the Restricted Linux Shell
Understanding Service Procedures
Antistatic Precautions for Service
Determine If a Power Supply Is Faulty
Inspecting the InfiniBand Cables
Determine If the Battery Is Faulty
Remove the Switch From the Rack
Understanding Hardware Commands
Linux Shells for Hardware Commands
Understanding InfiniBand Commands
Linux Shells for InfiniBand Commands
Understanding the SUN-DCS-IB-MIB MIB OIDs
Understanding the SUN-FABRIC-MIB MIB OIDs
Understanding the SUN-HW-TRAP-MIB MIB OIDs
Understanding the SUN-ILOM-CONTROL-MIB MIB OIDs
Understanding the SUN-PLATFORM-MIB MIB OIDs
Temperatures within the chassis are regulated by the fans. For the fan cooling to be effective, the intake room air temperature must be below 25°C.
When a temperature is too high, it can be caused by:
Air flow is insufficient – The fan speeds are too slow, the fans have stopped spinning, or the fan is missing altogether.
Cooling air temperature is too high – No component can be cooled to a temperature lower than the cooling medium itself. Additionally, as the cooling air temperature increases, the air's ability to remove heat diminishes.
Heat generated within a component is greater than that removed – The cooling system was designed for a certain power dissipated by the components. When those components experience high computing or throughput loads, or are subjected to overvoltage situations when a voltage regulator fails, they generate more heat.
For example, if the temperature at sensor target /SYS/MB/T_I4A is too high, then the fans speeds (/SYS/FANx/TACH) are collectively too low, the cooling air temperature (/SYS/MB/T_FRONT) is too high, the voltage powering the I4 switch chip (/SYS/MB/V_I41.2V) is too high, or the loading on the switch chip is too high.
When a temperature is too low, it is rarely a detrimental situation. There is an exception, when the temperature of a component is the same as room temperature or lower, there is a great possibility that the component is not functioning as expected.
For example, if the temperature at sensor target /SYS/MB/T_I4A is too low, as compared to the cooling air temperature (/SYS/MB/T_FRONT), then the I4 switch chip is being held in a state of reset, the voltage for the I4 switch chip (/SYS/MB/V_I41.2V) is not being provided, or the I4 switch chip has catastrophically failed.
Note - The switch is not fitted with an air filter. Therefore, contaminants can enter the switch and adhere to cooling surfaces. The effect is two-fold, the contaminants prevent the flow of cooling air to the components, and the contaminants behave as insulators, retaining waste heat dissipated by the components. If supplied voltages, cooling air temperatures, and fans speeds are within acceptable values, yet component temperatures are high, the extent of contamination is severe.
When temperatures are out of range, the suggested action is to check the fans and replace any that are not operating properly. See Servicing Fans. If new fans do not resolve the problem, then replace the switch.