Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Known Limitations

Learn about known limitations in Junos OS Release 21.2R2 for EX Series switches.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

General Routing

  • Junos OS might hang trying to acquire the SMP IPI lock while rebooting when it is running as a VM on Linux and QEMU hypervisor. As a workaround, you can power cycle the device. PR1385970

  • On a virtual chassis, cli command to add license is not available on the backup member. Licenses should be added from the master member only. PR1545075

  • Packets are mirrored through analyzer with ingress and egress interfaces across different virtual chassis members might have a different vlan-id from that of vlan-id of the exiting egress interface. This limitation is from underling hardware. PR1552905

  • Resource deadlock avoided messages are observed when request system software add statement is issued on EX4400 line of switches. No functionality impact is seen. PR1557468

  • RPD core file is generated when the device reboots and daemon restarts. Daemon recovers and there is no service impact on routing protocol usage. PR1567043