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Juniper Extension Toolkit


Release 19.4

April 2020

Revision 2

These release notes accompany the Juniper Extension Toolkit (JET). They describe the new and changed features, limitations, and known and resolved problems.

Applications developed using the Juniper Extension Toolkit (JET) are supported on the following platforms: ACX Series, EX4300, EX4600, EX9200, PTX Series, QFX Series, MX80, MX104, MX240, MX480, MX960, MX2010, MX2020, vMX, vSRX, and SRX Series.

JET provides a common API framework that exposes API functionality made available by the internal Junos OS daemons or processes. Each internal daemon exposes its own APIs. All of the APIs are accessible using the gRPC framework for remote procedure calls (RPCs).

JET supports the following:

  • Multiple languages for applications that run off-box

  • Python for applications that run on a device running Junos OS

  • Applications written in C to run on devices that do not use the JET APIs

  • An event notification method that enables the applications to respond to selected system events

Table of Contents

New and Changed Features
Changes in Behavior and Syntax
Known Issues
Known Issues in 19.4R1 and 19.4R2
Known Issues in 16.2R1
Finding More Information
Documentation Feedback
Requesting Technical Support
Revision History