Owner's Manual

4. Open a serial/Telnet/SSH text console to CMC, log in, and run the racadm getsysinfo command. Make sure that
Power Status is ON. Else, run the following command to power up the chassis:
racadm chassisaction -m chassis <action>
where < action > is powerup, powerdown, powercycle, nongraceshutdown or reset.
NOTE: When power supply redundancy is enabled, a PSU in the chassis is utilized as a spare, ensuring that
the failure of any one PSU does not cause the servers or chassis to turn off. Power Supply Redundancy mode
requires up to four PSUs. Additional PSUs, if present, are utilized to improve power efficiency of the system if
Dynamic power supply engagement (DPSE) is enabled. Subsequent failures after loss of redundancy may
cause the servers in the chassis to turn off.
CMC Disconnects From iDRAC
1. Perform one of the following:
– If you are able to access or ping the CMC IP address, log in to CMC though the Web interface or RACADM
(Telnet/SSH, Remote, or Serial RACADM) interface.
– If you log in to CMC through the Web interface, go to Chassis Overview → Troubleshooting → Reset
components and click Reset/failover CMC.
– If you login to CMC through RACADM (Telnet/SSH/Serial), run the racadm cmcchangeover command. This
command is applicable only if the M1000e chassis has two CMCs, one active and the other standby. If there
is only one CMC in the M1000e chassis, run the
racadm racreset command.
– If you log in using remote RACADM and if the chassis has two CMCs (one active and the other standby),
run the following command:
racadm -r<CMC IP address>-u<username>-p<password>cmcchangeover
It takes around five minutes for the CMC to reboot. Log in to CMC through the Web interface or RACADM
(Telnet/SSH/Serial) using the IP address and view the active errors in the CMC logs.
* CMC Web Interface: Go to Chassis Overview → Logs to view the CMC logs.
* RACADM: Use the getsel, getraclog or gettracelog commands.
2. If the problem persists or if you are unable to access the CMC IP, make sure that network cables are connected
properly and network settings are configured properly. Connect a Serial cable to the CMC. After the login prompt is
displayed, check the network settings using the following command:
racadm getconfig -g cfglannetworking
To change the network settings such as IP address, Subnet address, or Gateway address from DHCP to static IP or
from static IP to DHCP, run the following command:
racadm help config -g cfglannetworking
Follow the examples provided in the output.
3. If the problem persists log in to the CMC Web interface, go to Server Overview → Setup → iDRAC → iDRAC
Network Settings
, and verify the modular server network settings.
Make sure that:
– LAN is enabled and IPv4 or IPv6 settings are correct
– Verify modular server VLAN settings (Server Overview → Setup → VLAN .)
In the left pane, under Server Overview, click on the slot where the modular server is present. Make sure the
modular server gets the IP under IPv4 or IPv6 network settings.
Ping the iDRAC IP from any management station. If this is successful, click Launch Remote Console option available
in the same page. If the modular server has an operating system, an operating system login prompt is displayed. If
the modular server is in POST condition, reboot the modular server.
9