Unfortunately changing temperature thresholds via e.g. # set chassis temperature-threshold red-alarm 30
on both EX 3300 and EX 4300 Juniper switches generates only log events in messages, resp.
> show chassis alarms
2 alarms currently active
Alarm time Class Description
2018-03-02 13:05:16 CET Major FPC 0 CPU Temp Too Hot
2018-02-27 10:25:47 CET Major Management Ethernet Link Down
So, no trap with jnxOverTemeprature is send meanwhile
> request snmp spoof-trap jnxOverTemperature generates and sends SNMP trap OK.