Lenovo Flex System x480 X6 Compute Node Installation And Service Manual page 958

The event is logged in the event log. See the event log for the IBM Flex System Manager management node
(if installed) or see the event log of the CMM to determine what actions might be required to resolve this issue.
Cannot log in
Use the information in this section to troubleshoot the compute node when you cannot log in to the
management node, the Chassis Management Module (CMM), or the I/O module.
Cannot log into the CMM
Use the information in this section to troubleshoot the compute node when you cannot log in to the Chassis
Management Module (CMM).
1. Make sure that you are using the correct password and that the capitals lock is off.
2. Restore the CMM default settings by pressing the reset button on the CMM.
Cannot log into the I/O Module
Use the information in this section to troubleshoot the compute node when you cannot log in to the I/O
module.
1. Make sure that you are using the correct password and that the capitals lock is off.
2. Contact IBM Support for further assistance if you have forgotten the password.
Cannot log in to the IBM Flex System Manager management node
Use the information in this section to troubleshoot the compute node when you cannot log in to the
management node.
1. Make sure that you are using the correct password and that the capitals lock is off.
2. Contact IBM Support for further assistance if you have forgotten the password.
Cannot ping the CMM on the management network
Use the information in this section to troubleshoot the compute node when one or more compute nodes
cannot ping the CMM on the management network.
CMM cannot ping the CMM in a different chassis (Management Network)
Use the information in this section to troubleshoot a Chassis Management Module (CMM) that cannot ping
the Chassis Management Module (CMM) in a different chassis.
1. Make sure that the Chassis Management Modules are powered on and the applicable ports are enabled.
a. If the CMM is powered on and hung, reset the CMM.
b. Make sure that the IMM, the management node, and the CMMs are all on the same subnet.
2. Verify that the cables between the CMMs and the top-of-rack switch are correctly connected and that
the activity LEDs are lit on the applicable ports.
3. Make sure that the management node has a correct IP address and is on the same subnet as the CMMs.
4. Note: If the CMM recently lost connection to the DCHP server, you must to reset the IMM by using the
CMM interface so that a new IP address can be acquired.
948
Lenovo Flex System x280 X6, x480 X6, and x880 X6 Compute Node Installation and Service Guide