Lenovo Chassis Management Module 2

The Lenovo Chassis Management Module 2 (CMM) is a hot-swap Lenovo Flex System module that you use to configure and manage all installed Lenovo Flex System components. The CMM provides system-management functions for all components in a Lenovo Flex System Enterprise Chassis. It controls a serial port for connection to a local console or a serial management network and supports data rates of 10/100 Mbps and 1 Gbps with autonegotiate.

The CMM provides these functions:

Power control
Fan management
Chassis and compute node initialization
Switch management
Diagnostics: chassis, I/O options, and compute nodes
Resource discovery and inventory management
Resource alerts and monitoring management
Chassis and compute node power management
Security policy management
Role-based access control
Support for up to 84 local CMM user accounts
Support for up to 32 simultaneous sessions

The CMM has the following connectors:

USB connection. This connection can be used for insertion of a USB media key for tasks, such as firmware updates.
10/100/1000 Mbps RJ45 Ethernet connection to connect to a management network. The CMM can be managed via this Ethernet port.
Serial port (mini-USB) for local command-line interface (CLI) management. Use serial cable 90Y9338 for connectivity.

The CMM has the following light-emitting diodes (LEDs) that provide the following information:

Power-on LED
Activity LED
Error LED
Ethernet port link and port activity LEDs

The CMM also incorporates a reset button, which, when pressed, resets the CMM back to its default condition. It has two functions, depending on how long the button is pressed:

When pressed for less than 5 seconds, the CMM restarts.
When pressed for more than 5 seconds (for example, 10 or 15 seconds), the CMM configuration is reset to the manufacturing defaults, and then the CMM restarts.

The CMM supports a web-based graphical user interface (GUI) that provides a way to perform CMM functions within a supported web browser. You can also perform management functions through the CMM command-line interface (CLI). Both the web-based GUI and the CLI are accessible via the single RJ45 Ethernet connector on the CMM or from any other system that is connected to the same (management) network.

Connecting to the CMM

By default, the CMM does not have a fixed static IPv6 IP address. For initial access to the CMM in an IPv6 environment, you can either use the IPv4 IP address or the IPv6 link-local address.

The CMM has the following default settings:

IP address: 192.168.70.100
Subnet: 255.255.255.0
User ID: USERID (all capital letters)
Password: PASSW0RD (note the number zero, not the letter O, in PASSW0RD)

By default, the CMM is configured to respond to DHCP first before it uses its static IP address.

The client computer that you connect to the CMM must be configured to operate on the same subnet as the CMM. The IP address of the CMM must also be in the same local domain as the client computer. To connect to the CMM for the first time, you might have to change the Internet Protocol properties on the client computer.

There are two built-in interfaces that you can use to connect to the CMM for the first time: the web interface and the CLI. If you are connecting to the CMM through an Ethernet connection, you can open a web browser and use the web interface, or you can use Telnet to connect to the CMM and use the CLI to configure the CMM. If you are connecting through a serial connection, you can use a terminal emulator to access the CLI.

Configuring the CMM

You configure only the primary CMM. If a standby CMM is installed, it receives the configuration and status information automatically from the primary CMM.

If a CMM is a replacement for the only CMM in the Flex System chassis and you saved the configuration file before you replaced the CMM, you can apply the saved configuration file to the replacement CMM