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Known Limitations

Learn about known limitations in Junos OS Evolved Release 21.4R2 for QFX Series switches.

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

General Routing

  • On QFX5220-32CD, VLANs between 3968 and 4095 are reserved for Layer 3 interfaces by default. These VLANs cannot be used for Layer 2 interfaces. As of now there is no commit check added for this purpose. You need to take care of this while configuring VLANs for Layer 2. PR1423468

  • 2x200G(QSFP56-DD-2x200GBASE-CR4-CU) channel which connected with server through Nvidia connectX-6 NIC might take extra time for link UP. PR1617676