There are alarm in HMM "E9000" , detail as below :
for this issue, always caused by network issue , we can follow the alarm suggestion to check step by step , alarm ID :0x0743FF27;
after check, cable connected to stack port , but not management port . after change the management network cable
to management port , alarm disappeared
customer connect the wrong port cause this alarm .
connect management port on MM board then the alarm disappeared .
can refer back the below link to check all solutions about the error