Junos OS Release Notes for JRR Series
These release notes accompany Junos OS Release 20.1R3 for JRR Series. They describe new and changed features, limitations, and known and resolved problems in the hardware.
You can find these release notes on the Juniper Networks Junos OS Documentation webpage, located at https://www.juniper.net/documentation/product/en_US/junos-os.
What's New
There are no new features or enhancements to existing features for JRR Series in Junos OS Release 20.1R3.
What's Changed
There are no changes in behavior and syntax for JRR Series in Junos OS Release 20.1R3.
Known Limitations
There are no known limitations for JRR Series in Junos OS Release 20.1R3.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
Open Issues
There are no open issues for JRR Series in Junos OS 20.1R3 Release.
Resolved Issues
Learn about resolved issues for JRR Series in Junos OS 20.1R3 Release.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
Resolved Issues: 20.1R3
General Routing
When performing the request system power-off command on JRR200 platform, the device might reboot instead of shutting down. Then, the traffic might be lost until the system reboot. Additionally, if request system halt command is executed, some of the physical interfaces remains up which might cause traffic impact. PR1534795
The factory default configuration on JRR200 does not have vendor-id option configured on the interfaces (em0; em2-em9) and as a result DHCP option 60 is not sent out to the DHCP/ZTP server during the ZTP process. PR1582038
Resolved Issues: 20.1R2
General Routing
Link state of virtual em interfaces in Junos OS might not reflect the true link status of corresponding physical interfaces in the Linux host. PR1492087
The tcp_timer_keep log messages flood continuously on JRR200. PR1533168
Resolved Issues: 20.1R1
General Routing
JRR200: USB install image is not working. PR1471986
Documentation Updates
There are no errata or changes in Junos OS Release 20.1R3 documentation for JRR200 Route Reflectors.
Migration, Upgrade, and Downgrade Instructions
This section contains the upgrade and downgrade support policy for Junos OS for the JRR Series Route Reflector. Upgrading or downgrading Junos OS might take several minutes, depending on the size and configuration of the network.
For information about software installation and upgrade, see the Installation and Upgrade Guide.
Upgrade and Downgrade Support Policy for Junos OS Releases
Support for upgrades and downgrades that span more than three Junos OS releases at a time is not provided, except for releases that are designated as Extended End-of-Life (EEOL) releases. EEOL releases provide direct upgrade and downgrade paths—you can upgrade directly from one EEOL release to the next EEOL release even though EEOL releases generally occur in increments beyond three releases.
You can upgrade or downgrade to the EEOL release that occurs directly before or after the currently installed EEOL release, or to two EEOL releases before or after. For example, Junos OS Releases 17.1, 17.2, and 17.3 are EEOL releases. You can upgrade from Junos OS Release 17.1 to Release 17.2 or from Junos OS Release 17.1 to Release 17.3.
You cannot upgrade directly from a non-EEOL release to a release that is more than three releases ahead or behind. To upgrade or downgrade from a non-EEOL release to a release more than three releases before or after, first upgrade to the next EEOL release and then upgrade or downgrade from that EEOL release to your target release.
For more information about EEOL releases and to review a list of EEOL releases, see https://www.juniper.net/support/eol/junos.html.
For information about software installation and upgrade, see the Installation and Upgrade Guide.