Not reading device on system management (I2C) bus [arg1]. The rear LED card in the chassis [arg2] communication is offline.
The Chassis Management Module (CMM) is not able to communicate with the rear LED card.
Alert Category
Chassis/System Management (Critical)
Chassis LED that is Lit
Chassis Fault
CIM Information
Prefix:CMM
and ID:0125
SNMP Trap ID
mmTrapChassisC
Automatically Notify Support
Yes
User Response
If the chassis has one CMM, replace the CMM.
If the problem remains, replace the rear LED card.
As a potential temporary workaround, try to move the CMM to the other CMM bay.
If the chassis has two CMMs, replace the rear LED card.