When you install a second CMM in a chassis, the second
CMM is automatically configured as a standby CMM by default. If the
primary CMM fails, the IP address for the standby CMM changes to the
same IP address that was used for the primary CMM, and standby CMM
takes over the management of the chassis. However, you can perform
more advanced failover configuration from the management controller
web interface for the chassis.
About this task
For example, you can choose to:
- Disable the network interface for the standby CMM to prevent failover.
- Enable the network interface for the standby CMM, and allow IP
addresses to swap between the two CMMs during failover.
- Enable the network interface for the standby CMM, and prevent
the IP addresses from swapping between the two CMMs during failover.
For more information about CMM advanced failover capabilities,
see the advfailover command in the CMM online documentation.
Procedure
To enable swappable IP address for the primary and standby CMMs,
complete the following steps.
- From the management controller web interface for the chassis,
click to display the Ethernet Configuration page.
- Select either IPv4 and IPv6 for your system.
- Under Configure IP address, select
the option to use a static IP address. Repeat for the other protocol.
- Click , and enable the advance failover option.
- Select Swap Management Module IP address.
- Perform test scenarios to verify that the failover works
correctly and that Lenovo XClarity Administrator can connect to primary and backup CMMs.