New Distribution Model
For Junos OS Release 14.1X53-D10 and later, the J-Web interface is available in two packages:
Platform package—Provides basic features of J-Web and is installed as part of Junos OS.
Application package—Provides all features of J-Web and is a separately installable package.
The Platform package of J-Web is installed as part of Junos OS that is shipped with your EX Series switch. The Platform package provides the basic features of the J-Web interface. The Platform package enables you to configure and maintain your switch.
The Application package is not installed by default on your switch. You must download it and install it over the Platform package on your switch. The Application package provides all the features of the J-Web interface that enable you to configure, monitor, maintain, and troubleshoot your switch.
For information about installing the Application package, see Upgrading to J-Web Application Package.
The Platform package, which is installed as part of the Junos OS that is shipped with your switch, follows the Junos OS release cycle. However, the Application packages have their own release cycle which is independent of the Junos OS release cycle. This separate release cycle helps you get the latest features of J-Web by installing the latest version of the Application package, without waiting for Junos OS releases.
The J-Web Application package is hot-pluggable. You can install it on top of the current Junos OS installation, and you need not reboot the switch after the installation.
To determine which J-Web package you are currently using, click Help > About. The About window appears. If you are using a Platform package, only the Platform package details are displayed. If you are using an Application package, both the Platform package and Application package details are displayed.
If your current J-Web package is:
Then you can:
Upgrade to the Application package.
Update to a latest version of the Application package available on the Juniper Networks server that is compatible with the Junos OS on your switch.
If you upgrade Junos OS on your switch, the current J-Web package is replaced with the J-Web Platform package that is associated with the upgraded Junos OS release. You can then install the latest Application package that is associated with the main release of the upgraded Junos OS, over the Platform package.
The Application packages of J-Web have their own release cycles (A1, A2, A3, and so on), which are independent of the Junos OS release cycle. An Application package is compatible only with the corresponding major release of Junos OS.
Table 1 lists the release compatibility.
Table 1: J-Web Release Compatibility Matrix
Junos OS Release
Associated J-Web Application Package Release
14.1X53-D10 through 14.1X53-D46
Application package 14.1X53-A2
14.1X53-D47 and later
Application package 14.1X53-A3
Application package 15.1A1
Application package 15.1A2
Application package 15.1A3
Application package 15.1X53-A1
Note: This release is only for EX2300, EX2300-C, and EX3400 switches.
Application package 16.1A1
Application package 17.1A1
Application package 17.2A1
Application package 17.3A1
Application package 15.1X53-A2
Application package 17.4A1
Application package 18.1A1
Application package 18.1A2
Application package 18.2A1
18.2R1 and later and all service releases of 18.2R1 and later
Application package 18.2A2
Application package 18.3A1
Application package 18.4A1
18.4R1 and later and all service releases of 18.4R1 and later
Application package 18.4A2
Application package 19.1A1
Application package 19.2A1
Application package 19.3A1
19.3R1 and later and all service releases of 19.3R1 and later
Application package 19.3A2
Application package 19.4A1
Application package 20.1A1
Application package 20.2A1
Application package 20.3A1
Application package 20.4A1
Any available later version of the Application package for a Junos OS release supersedes the earlier version. We recommend that you install the latest available version of the Application package.
For more information about J-Web packages, see J-Web for EX Series Ethernet Switches.
New and Changed Features
This section describes the features and enhancements in J-Web Application Package Release 20.4A1.
What’s New in J-Web Application Package Release 20.4A1
J-Web Application package releases support the EX4650 switches as standalone switches, EX2300, EX2300-C, EX2300-MP, EX3400, EX4300, EX4300-MP, and EX4600 switches which are supported from earlier releases.
You cannot connect to and perform initial configuration of EX4600 and EX4650 switches by using the EZSetup procedure from the J-Web interface; you must use EZSetup from the switch console.
Adobe Flash Player support will end on December 31, 2020. Therefore, the following pages will not be supported in Junos OS Release 20.4R1:
Monitor > System View > Process Details
Monitor > Power over Ethernet
Monitor > Service- > DHCP > Relay
Monitor > Switching > IGMP Snooping
Monitor > Virtual Chassis
Monitor > Security > Port Security
Monitor > Routing > OSPF Information
The following pages will be supported. However, the Flash components are removed.
Monitor > Interfaces
Monitor > Service > DHCP > Server
Upgrading to J-Web Application Package
There are two ways in which you can download and install the J-Web Application package:
There is a prescribed order for the installation tasks for updating to the Application package from an earlier version or from the Platform package. See Table 2 to determine the prescribed order of tasks for your installation.
Table 2: Installation Outline
Mode of Installation
To manually check and install the latest J-Web Application package:
To access the J-Web interface for the switch, your management device requires the following software:
Supported browsers— Microsoft Internet Explorer versions 9 or 10, Mozilla Firefox version 24 through 38, and Google Chrome version 27 through 43.
We recommended a screen resolution of 1440 X 900 pixels.
Language support—English-version browsers.
Known Issues and Limitations
This section lists the known issues in the J-Web Application package Release 20.4A1.
Table 3 lists the PR numbers and its description that are known issues in the J-Web Application package Release 20.4A1.
Table 3: Known Issues
Adobe Flash Player support will end on December 31, 2020. Therefore, the following pages will not load correctly for Junos OS Release 20.3R1 and earlier releases:
On EX4300 switches, the structured-data format for system log messages is not supported in the J-Web interface. If system log messages are configured to be written in structured data, the event logs in J-Web is not populated, and you are unable to view them using Monitor > Events and Alarms > View Events.
Workaround: Use the show log operational mode command for viewing structured-data format files.
Table 4 lists the PR numbers and its description that are known limitations in the J-Web Application package Release 20.4A1.
Table 4: Known Limitations
For Junos OS release 18.X and 19.X and its service releases, the auto update option is not supported.
Where X is R1, R2, R3, and R4.
To manually check and install the latest J-Web Application package:
If a Virtual Chassis contains more than six members, the Support Information page (Maintain > Customer Support > Support information) might not load. This is a known software limitation.
The J-Web interface does not support role-based access control; it supports only users in the super-user authorization class. Therefore, a user who is not in the superuser class, such as a user with view-only permission, is able to launch the J-Web interface and is allowed to configure everything, but the configurations fail on commit, and the switch displays access permission errors. This is a known software limitation.
If you uninstall the J-Web Platform package by using CLI, reinstalling the Application package will not restore J-Web.
Workaround: Reinstall Junos OS software.
J-Web software does not compare for appropriateness of the Application package or restrict you from installing inappropriate Application package on top of a Platform or Application package.
Workaround: Install the appropriate J-Web package.
The J-Web interface does not display CLI generated certificates in the Certificate section in the Management Access Configuration page (Configure > System Properties > Management Access). Using J-Web interface you cannot create or edit certificates.
Workaround: Use the CLI interface for accessing certificate related configurations.
In the J-Web interface, the Ethernet Switching Monitor page (Monitor > Switching > Ethernet Switching) might not display monitoring details if the switch has more than 13,000 MAC entries. This is a known software limitation.
When you try to commit your changes to the switch from your laptop by using the EZsetup procedure, the status of the commit operation is displayed as Success, even if the laptop is disconnected from the switch.
Workaround: Reconnect your laptop to the switch and commit the changes again.