Chassis Management Module (CMM)

The Chassis Management Module (CMM) provides management and control of the chassis, and is responsible for the following functions:

• Monitors, controls, and assures proper operation of the modules and other chassis components.

• Watches over the basic health of the system, reports anomalies, and takes corrective action when needed.

• Retrieves inventory information and sensor readings, as well as, receive event reports and failure notifications from the modules and field-replaceable units (FRUs).

• Performs basic recovery operations, such as, power cycle or reset of managed entities.

• Provides low-level hardware management services to manage the power, cooling, and interconnect resources of a chassis.

• Provides non-volatile storage of configuration data and software loads.

• Enables operator control of all modules in the system.

• Supports an industry-standard CLI, NETCONF, and SNMP.

Figure 1: CMM Module

Figure 2: CMM Slot Locations on BTI7814

Figure 3: CMM Slot Locations on BTI7802

Figure 4: CMM Slot Location on BTI7801 (Rear View)

CMM1 Specifications

CMM1 Latches

The CMM latches have a spring-loaded locking mechanism. The latches must be fully closed and locked for proper module operation.

Installing a CMM

Use this procedure to install a CMM.

It is recommended that you install two CMMs for redundancy.

Tools Required

• Number 2 Phillips screwdriver

1. Remove the filler panel from the slot into which you are installing the module and store it in a safe place for future use.
2. Remove the module from its antistatic bag, holding it by its edges and faceplate to prevent damage to the module circuitry.

   Visually inspect the module, including the pins and connectors that attach to the backplane, for signs of damage before installation.

3. Install the module.

   1. Ensure that all latches are in the fully open position. See CMM1 Latches.

   2. Facing the front of the chassis, position the module horizontally so that the text on the faceplate is in the correct orientation.

   3. Align the module with the slot guides.

   4. Insert the module edges in the slot guides and carefully slide the module until it contacts the backplane.

   5. Press firmly on a part of the faceplate away from the latches. The latches close by themselves as the module is seated. Take care not to pinch your fingers as the latches close.

   6. Lock the latches by closing the latches until the locking mechanism springs shut.

      When the latches are in the locked position, the latches cannot be opened without squeezing the spring-loaded locking mechanism to disengage the lock from the module faceplate.

4. Carefully tighten the faceplate thumbscrews.

You have successfully completed this procedure.

Removing a CMM

Use this procedure to remove a CMM from a chassis.

Tools Required

• Number 2 Phillips screwdriver

• Antistatic bag

1. Disconnect the cables from the module.Note

   Ensure that cables are protected with protective caps while disconnected.

2. Loosen the two faceplate thumbscrews. Use a screwdriver if necessary.
3. Squeeze the spring-loaded locking mechanism to disengage the latch from the module faceplate, and pull the latches to the open and unlocked position to unseat the module. See CMM1 Latches.
4. Slide the module from the slot and place it in an antistatic bag.
5. If the slot is to remain empty, install a CMM filler plate.

You have successfully completed this procedure.