Master/Slave Status (MS) LED

Refer to the following table to interpret the master and slave status (MS) LED.

LED Color	Status of Hardware	Recommended Action
Off	System is standalone or stack member or PE.	None.
Flashing green	This device is initializing as a stacking unit, and roles are being assigned.	None.
Flashing amber	The device is in non-operational mode; that is, stacking is enabled but the current unit is not able to join the stack due to a stack-related error condition such as image mismatch, configuration mismatch, or license mismatch. The device has lost its connection with the master unit.	None.
Steady green	Stacking mode is enabled and this device is the master unit in the stack or when the unit is standalone.	None.
Steady amber	Stacking mode is enabled and this device is a slave unit in the stack.	None.