What's Changed
Class of Service (CoS)
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For PTX Series devices running Junos OS Evolved, software priority "medium-low" maps to hardware priority "medium" for normal scheduling mode and "low" for strict priority scheduling mode.
General Routing
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Change in the
help syslog PFE
command output—In Junos OS Evolved, the output for help syslog PFE command is fixed to be consistent with Junos OS output on PTX10008 device. ERRMSG tags in EVO are named as SFLOWD_ whereas in Junos they are named as PFE_SFLOW_. -
Two new alarms are added and can be seen with MPC11E when 400G-ZR optics are used. High Power Optics Too Warm: warning of the increase in chassis ambient temperature with no functional action taken on the optics Temperature too high for optics power on: New inserted optics when the chassis ambient temperature is elevated beyond the threshold will not be powered on and would need to be reinserted when the ambient temperature is within the acceptable range
Juniper Extension Toolkit (JET)
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Python 3 is the default and only Python version for executing Juniper Extension Toolkit Python scripts (ACX Series, PTX Series, and QFX Series)—Junos OS Evolved supports only Python 3 for executing Juniper Extension Toolkit (JET) scripts written in Python. Python 2.7 is no longer supported for executing JET scripts, and we've deprecated the
language python
statement at the[edit system scripts]
hierarchy level.[See Understanding Python Automation Scripts for Junos Devices.]
Junos OS API and Scripting
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Ability to commit
extension-service file
configuration when application file is unavailable—When you set theoptional
option at theedit system extension extension-service application file file-name
hierarchy level, the operating system can commit the configuration even if the file is not available at the /var/db/scripts/jet file path.[See file (JET).]
-
Ability to restart restart daemonized applications—Use the
request extension-service restart-daemonize-app application-name
command to restart a daemonized application running on a Junos device. Restarting the application can assist you with debugging and troubleshooting. -
Deprecated functions in the
libpyvrf
Python module (ACX Series, PTX Series, and QFX Series)—Thelibpyvrf
Python module no longer supports theget_task_vrf()
andset_task_vrf()
functions.[See How to Specify the Routing Instance in Python 3 Applications on Devices Running Junos OS Evolved.]
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Python 3 is the default and only Python version for executing commit, event, op, and SNMP Python scripts (ACX Series, PTX Series, and QFX Series)—Junos OS Evolved supports only Python 3 for executing commit, event, op, and SNMP scripts written in Python. Python 2.7 is no longer supported for executing these types of scripts, and we've deprecated the
language python
statement at the[edit system scripts]
hierarchy level.[See Understanding Python Automation Scripts for Junos Devices.]
Network Management and Monitoring
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Python 3 is the default and only Python version for executing YANG action and translation Python scripts (ACX Series, PTX Series, and QFX Series)—Junos OS Evolved supports only Python 3 for executing YANG action and translation scripts written in Python. Python 2.7 is no longer supported for executing YANG action and translation scripts, and we've deprecated the
language python
statement at the[edit system scripts]
hierarchy level.[See Understanding Python Automation Scripts for Junos Devices.]
System Management
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When disk usage for the run directory is above 85%, ZooKeeper logs and snapshots in the /run/zookeeper/conf/default/version-2 directory will be deleted if there are more than 3 files, leaving only the 3 most recent files.
User Interface and Configuration
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Support for temperature sensor (PTX10001-36MR)—We support the temperature sensor statement at the edit chassis cb hierarchy level. You can use the temperature sensor statement to increase the fan speed and customize the temperature threshold. We recommend certain values for ZR and ZR-M modules to work which helps the temperature to remain within the thresholds.
[See temperature-sensor.]