If you have a dual CMM configuration, the CMM installed at the factory in slot CMM-0 of the system chassis is initially known as the active CMM. If you purchased a second CMM, the second CMM (installed in slot CMM-1) is initially known as the standby CMM.
Unique (static or DHCP) IP addresses must be assigned to both CMMs. Additionally, these CMMs must be assigned one unique high-availability IP address that floats between them. This high-availibility address enables the standby CMM to become the active CMM, in the event that the original active CMM becomes faulted.
For a more internal view of the management network, see Management Ethernet Network. For more information about how to assign IP addresses, see Assigning IP Addresses for the First Time.