This article explains the meaning of the host log message "kernel: EDAC MC0: 1 CE ie31200 CE on unknown memory" that may be seen on PTX Series routers and QFX 5K Series 

Users may see the following host log message in the "host logs" of a PTX Series router & QFX 5K Series 

2021-06-19T01:58:32.416917+00:00 router-name-node kernel: EDAC MC0: 1 CE ie31200 CE on unknown memory (channel:1 page:0x0 offset:0x0 grain:0 syn      drome:0x61)$
2021-06-19T01:58:33.419261+00:00 router-name-node kernel: EDAC MC0: 1 CE ie31200 CE on unknown memory (channel:1 page:0x0 offset:0x0 grain:0 syn      drome:0x61)$

These error messages are bad memory errors for RAM and are an indication of either a transient memory issue or hardware failure.

The errors are seen on the Linux kernel on the host system. EDAC stands for "Error Detection and Correction" and the message indicates where the error is specifically being encountered. In this case, MC0 means the RAM in the first socket (#0). "CE" in the above message stands for "Correctable Error."

If these errors are persistently seen on the router, contact Support to investigate further and determine whether the device needs to be replaced.