Step 3: Configure Chassis Management Modules (CMMs)

Configure the primary Chassis Management Module (CMM) in your chassis to manage all devices in the chassis.

About this task

For detailed information about configuring a CMM, see Configuring chassis components in the Flex System online documentation.

Also, refer to steps 4.1 - 4.5 on the instruction poster that was provided with your chassis.


Complete the following steps to configure the CMM.

If two CMMs are installed, configure only the primary CMM, which automatically synchronizes the configuration with the standby CMM.

  1. Connect an Ethernet cable from the CMM in bay 1 to a client workstation to create a direct connection.

    Illustrates the location of the CMMs in a chassis

    To connect to the CMM for the first time, you might need to change the Internet Protocol properties on the client workstation.

    Important: Ensure that the client workstation subnet is the same as the CMM subnet. (The default CMM subnet is The IP address chosen for the client workstation must be on the same network as the CMM (for example, -
  2. To launch the CMM management interface, open a web browser on the client workstation, and direct it to the CMM IP address.
    • Ensure that you use a secure connection and include https in the URL (for example, If you do not include https, you will receive a page-not-found error.
    • If you use the default IP address, the CMM management interface might take a few minutes to be available. This delay occurs because the CMM attempts to obtain a DHCP address for two minutes before falling back to the default static address.
  3. Log in to the CMM management interface using the default user ID USERID and password PASSW0RD. After you log in, you must change the default password.
  4. Complete the CMM Initial Setup Wizard to specify the details for your environment. The Initial Setup Wizard includes the following options:
    • View chassis inventory and health.
    • Import the configuration from an existing configuration file.
    • Configure the general CMM settings.
    • Configure the CMM date and time.
      Tip: When you install XClarity Administrator, you configure XClarity Administrator and all chassis managed by XClarity Administrator to use an NTP server.
    • Configure the CMM IP information.
    • Configure the CMM security policy.
    • Configure domain name system (DNS).
    • Configure the event forwarders.
  5. After saving the setup wizard settings and applying changes, configure the IP addresses for all of the components in the chassis.
    Refer to step 4.6 of the instruction poster that was provided with your chassis.
    Note: You must reset the System Management Processor for each compute node and restart the Flex switches to show the new IP addresses.
  6. Restart the CMM using the CMM management interface.
  7. As the CMM is restarting, connect a cable from the Ethernet port on the CMM to your network.

    Illustrates cabling the CMMs to the top-of-rack switches
  8. Log in to the CMM management interface using the new IP address.

After you finish

You can also configure the CMM to support redundancy. Use the CMM help system to learn more about the fields that are available on each of the following pages.