JET API of Juniper router MX:
For decades, syslog and snmp traps have been extensively used to receive event notifications from devices. It typically required an operator to configure the event category and severity level on the devices and where to send the events to.
Fast forward to today and thanks to a generic need for highly scalable and lightweight instant messaging needs, there is now MQTT (MQ Telemetry Transport), defined in an ISO standard (ISO/IEC PRF 20922): A client server publish/subscribe messaging transport protocol, run over TCP/IP.
Juniper introduced MQTT to Junos 16.1R1 as an integral part of the Juniper Extension Toolkit (JET). Chapter 2 in Juniper Extension Toolkit API Guide describes the notification API in detail, but where is the fun in reading when you can simply take a router for a spin!
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