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Known Limitations

Learn about known limitations in this release 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

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

  • On a Virtual Chassis, the CLI command to add license is not available on the backup member. Virtual Chassis master installs the Licenses in all the VC members.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

  • On the EX4400 Virtual Chassis, software upgrade using the Non Stop Software Upgrade functionality might fail for 21.2R1 images. The Backup member will be upgraded to target image first and the backup member might not become ready for GRES within required time when upgraded to target image. The Non Stop Software Upgrade process aborts with error. You must manually restore the backup member to previous software version. PR1599506