Junos OS Release Notes for JRR Series
These release notes accompany Junos OS Release 20.2R3 for the JRR Series. They describe new and changed features, limitations, and known and resolved problems in the hardware and software.
You can also 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
Learn about what changed in Junos OS main and maintenance releases for JRR Series Route Reflectors.
What’s New in Release 20.2R3
There are no new features or enhancements to existing features for JRR Series in Junos OS Release 20.2R3.
What’s New in Release 20.2R2
There are no new features or enhancements to existing features for JRR Series in Junos OS Release 20.2R2.
What’s New in Release 20.2R1
Layer 2 Features
Support for Link Layer Discovery Protocol (JRR200)—Starting in Junos OS Release 20.2R1, JRR Series devices support Link Layer Discovery Protocol (LLDP) is supported both on the management port em0 and on the WAN ports em2 through em9. LLDP is a link-layer protocol defined in IEEE 802.1AB that allows network devices to advertise their identity, capabilities, and configuration to other devices on the LAN.
[See Understanding LLDP.]
What's Changed
There are no changes in behavior and syntax in Junos OS Release 20.2R3 for JRR Series Route Reflectors.
Known Limitations
There are no known limitations in Junos OS Release 20.2R3 for JRR Series Route Reflectors.
Open Issues
There are no open issues in Junos OS Release 20.2R3 for JRR Series Route Reflectors.
Resolved Issues
Learn which issues were resolved in Junos OS main and maintenance releases for JRR Series Route Reflectors.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
Resolved Issues: 20.2R3
General Routing
On the JRR200 device, four out of eight fans might not work after upgrading to Junos OS Release 19.4R1 and later. This might cause high temperature of the device eventually impacting the traffic. PR1534706
On the JRR200 device, four out of eight fans might not work after upgrading to Junos OS Release 19.4R1 and later. This might cause high temperature of the device eventually impacting the traffic. PR1534706
Resolved Issues: 20.2R2
General Routing
On the JRR200 routers, the firewall filter with non-zero TTL value might cause a commit error. PR1531034
Resolved Issues: 20.2R1
General Routing
USB install image is not working for JRR200 platform. PR1471986
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
Documentation Updates
There are no errata or changes in Junos OS Release 20.2R3 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 JRR200 Route Reflector Quick Start
Upgrade and Downgrade Support Policy for Junos OS Releases
We have two types of releases, EOL and EEOL:
End of Life (EOL) releases have engineering support for twenty four months after the first general availability date and customer support for an additional six more months.
• Extended End of Life (EEOL) releases have engineering support for thirty six months after the first general availability date and customer support for an additional six more months.
For both EOL and EEOL releases, you can upgrade to the next three subsequent releases or downgrade to the previous three releases. For example, you can upgrade from 19.2 to the next three releases – 19.3, 19.4 and 20.1 or downgrade to the previous three releases – 19.1, 18.4 and 18.3.
For EEOL releases only, you have an additional option - you can upgrade directly from one EEOL release to the next two subsequent EEOL releases, even if the target release is beyond the next three releases. Likewise, you can downgrade directly from one EEOL release to the previous two EEOL releases, even if the target release is beyond the previous three releases. For example, 19.2 is an EEOL release. Hence, you can upgrade from 19.2 to the next two EEOL releases – 19.3 and 19.4 or downgrade to the previous two EEOL releases – 19.1 and 18.4.4.
Release Type | End of Engineering (EOE) | End of Support (EOS) | Upgrade and Downgrade to subsequent 3 releases | Upgrade and Downgrade to subsequent 2 EEOL releases |
End of Life (EOL) | 24 months | End of Engineering + 6 months | Yes | No |
Extended End of Life (EEOL) | 36 months | End of Engineering + 6 months | Yes | Yes |
For more information about EOL and EEOL releases, see https://www.juniper.net/support/eol/junos.html.
For information about software installation and upgrade, see the Installation and Upgrade Guide.