You will need to replace a Chassis Monitoring Module (CMM) if the module fails. You can remove and replace a CMM from a powered-off system or from a powered-on system using a hot-plug procedure. If you are replacing the only CMM in a system, you must preform the appropriate software commands to prepare the system for removal of its management agent. A chassis with a single CMM will be unmanageable while you replace that CMM.
A single CMM must be installed in slot CMM0. A second CMM can be installed in slot CMM1.
If you do not install a replacement CMM in a redundant configuration, you must insert a CMM filler panel. The filler panel is required to meet FCC requirements for electromagnetic interference (EMI).
The Chassis Monitoring Module is a customer-replaceable unit (CRU).
Prepare the system for a hot-plug operation.
Locate the CMM with its blue Ready-to-Remove indicator LED lit.
Unplug any cables connected to the CMM.
Grab both ejector latches at the same time and press the latches on both ejectors inward.
This releases the latch from the chassis.
Swing out both ejector levers.
Pull the ejector levers toward you and slide the CMM out of the chassis.
Support the bottom of the CMM with one hand as it comes out of the chassis.
The following illustration shows the CMM removal from a Sun Blade 8000 Chassis. The CMM in the Sun Blade 8000 P Chassis is located in a similar position, above the AC interface module.
Installation is the reverse of this procedure. When inserting the CMM, ensure that the CMM's RJ-45 port connections are facing toward you, that the label on the CMM is facing up, and that ejector levers are fully open. When inserting the CMM, ensure that the CMM engages and aligns with the chassis guidance system. An incorrectly aligned CMM can damage the CMM's internal connections to the chassis midplane.
After you physically install a CMM in a powered-on system, the CMM automatically begins its initialization. You do not need to perform further hot-plug procedures. To verify that the CMM is replaced properly, see Verify Hot-Insert Operation.
If you have installed the CMM in a powered off system, the CMM goes through this sequence of operations:
CMM receives 12-volt standby power and comes out of reset.
The processors begin to execute uBoot on the CMM and set the green OK indicator on the CMM to the Slow Blink state.
When the CMM has booted, the active CMM sets the green OK indicator on the Front Indicator Module (FIM) and Rear Indicator Module (RIM) to the Standby Blink state, indicating that the chassis is now ready for full power-on.