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Known Limitations

Learn about known limitations in this release for QFX 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

  • After configuring VxLAN on a physical interface, its always treated as VxLAN port even though L2 VLAN exists. PR1570689

  • Unified ISSU on QFX5120-48Y and EX4650 switches will not be supported if there is a change in the Cancun versions of the chipset SDKs between the releases. This is a product limitation as change in the Cancun firmware leads to the chip reset and hence ISSU is impacted. The Cancun versions in the chipset SDKs should be the same between two Junos OS releases for ISSU to work. PR1634695

  • The incoming VLAN tag is removed at ingress. So, it is not available at egress sampling.PR1654879

  • For traffic dropped at egress due to split horizon in BCM during egress path processing, statistics are shown on vtep as statistics are fetched at ingress pipeline in BCM. PR1656400

  • When VNI ranges spawn across two beta blocks, the programming ranges have limitations. The forwarding pipeline places the VNI ID along with the flags in the GRE key. This is specific to implementation and discrete nature of non-overlapping ranges, we recommend the allowed VNI ranges. Therefore, it is recommended to configure VNI matches as specific number or a list of VNIs instead of a range.PR1660623