- Introduction
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for cSRX
- play_arrow Junos OS Release Notes for EX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- play_arrow What's New in 21.4R3
- What's New in 21.4R2
- play_arrow What's New in 21.4R1
- Hardware
- Architecture
- Chassis
- EVPN
- High Availability
- IP Tunneling
- Junos Telemetry Interface (JTI)
- Layer 2 VPN
- Interfaces
- MPLS
- Multicast
- Network Address Translation (NAT)
- Operation, Administration, and Maintenance (OAM)
- Platform and Infrastructure
- Routing Protocols
- Source Packet Routing in Networking (SPRING) or Segment Routing
- Services Applications
- Software Defined Networking (SDN)
- Software Installation and Upgrade
- Subscriber Management and Services
- VPNs
- Additional Features
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow What's New
- What's New in 21.4R3
- play_arrow What's New in 21.4R2
- play_arrow What's New in 21.4R1
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for vMX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Upgrade Instructions
- play_arrow Junos OS Release Notes for vRR
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- Licensing
- Finding More Information
- Requesting Technical Support
- Revision History
Known Limitations
Learn about known limitations in Junos OS Release 21.4R3 for SRX Series Gateways.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
J-Web
The Firefox browser displays an unsaved changes error message in the J-Web Basic Settings page if the Autofill logins and passwords option is selected under the Browser Privacy and security settings. PR1560549
Platform and Infrastructure
For upgrades to Junos OS version 21.2 or higher from Junos OS versions below 21.2, the
no-validate
option needs to be used in therequest system software upgrade
or therequest system software in-service-upgrade
(ISSU) command. Note: This does not apply to SRX300 series and SRX550HM devices.For the case of ISSU however, the
no-validate
option does not take effect and you need to use the hiddenno-compatibility-check
option instead as a workaround to be able to use ISSU to Junos 21.2 or higher successfully. This issue was fixed in Junos releases 20.3R3-S5, 20.4R3-S4, 21.1R3-S3 and higher releases. PR1590099 and PR1638499USB image upgrade for RE-1800x4 K2re "bare-metal" platforms (SRX5000 line of devices, MX240, MX480, MX960, MX2010, EX9208 chassis) might not be successful. PR1630040
On SRX4600 platform, the CPU may overrun while performing sanity check due to incompatibility issues between ukern scheduler and Linux driver which might lead to traffic loss.PR1641517
On SRX platforms, when performing ISSU to Junos OS release 22.1 or above releases from a pre-22.1 release, ISSU will be aborted with the warning message "ISSU is not supported for Clock Synchronization (SyncE)". As a workaround use the hidden
no-compatibility-check
option in the ISSU command. This issue is resolved in 21.3R3, 21.4R2, 21.4R3 and higher releases. PR1652838
VPNs
In some scenario(e.g configuring firewall filter) sometimes srx5K might show obsolete IPsec SA and NHTB entry even when the peer tear down the tunnel. PR1432925