What’s Changed in Release 21.1R1
Junos XML API and Scripting
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Python 2.7 deprecation (ACX Series, EX Series, MX Series, PTX Series, QFX Series, SRX Series, vMX, and vSRX)—Starting in Junos OS Release 21.1R1, devices running Junos OS no longer support Python 2.7. We've deprecated the corresponding
language python
statement at the[edit system scripts]
hierarchy level. To execute Python scripts, configure thelanguage python3
statement at the[edit system scripts]
hierarchy level to execute the scripts using Python 3.[See Understanding Python Automation Scripts for Devices Running Junos OS.]
Network Management and Monitoring
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Change in license bandwidth command on vMX virtual routers
—Starting in Junos OS, to use the available license bandwidth, explicitly set the license bandwidth use the set chassis license bandwidth <In Mbps> command.
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Support for disconnecting unresponsive NETCONF-over-SSH clients (ACX Series, EX Series, MX Series, NFX Series, PTX Series, QFX Series, SRX Series, vMX, and vSRX)—You can enable devices to automatically disconnect unresponsive NETCONF-over-SSH clients by configuring the
client-alive-interval
andclient-alive-count-max
statements at the[edit system services netconf ssh]
hierarchy level. Theclient-alive-interval
statement specifies the timeout interval in seconds, after which, if no data has been received from the client, the device requests a response. Theclient-alive-count-max
statement specifies the threshold of missed client-alive responses that triggers the device to disconnect the client, thereby terminating the NETCONF session.[See ssh (NETCONF).]