Dell PS-M4110 User Manual page 199

Executing Power Control Operations on IOMs Using RACADM
To execute power control operations on an IOM using RACADM, open a serial/Telnet/SSH text console to CMC, log in,
and type:
racadm chassisaction -m switch-<n><action>
where < n > is a number 1-6 and specifies the IOM (A1, A2, B1, B2, C1, C2), and <action> indicates the operation you want
to execute: powercycle or reset.
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