I see SNMP_IPC_READ_ERROR messages when the SNMP process restarts on my system and also during Routing Engine switchover. Is this acceptable?
Yes, it is acceptable to see SNMP_IPC_READ_ERROR messages when the SNMP process is restarted, the system reboots, or during a Routing Engine switchover.
If all the processes come up successfully and the SNMP operations are working properly, then you can ignore these messages.
For more information, click Understanding SNMP implementation in Junos OS.