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Open Issues

Learn about open issues 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.

EVPN

  • On all QFX platforms running on Junos OS Evolved, with EVPN VXLAN enabled, if there is a default route in primary instance pointing to mgmt interface, it could result in anomalies in Junos OS Evolved database. PR1622035

General Routing

  • On the QFX5130-32CD platform running Junos OS Evolved, you cannot clear or reset the disk option specified in the scheduled request node reboot command. The node reboots with the disk option last specified. PR1517596

  • On QFX5700 devices, ungraceful removal (OIR) of FPC or an FPC fault might result in a PCIE MAJOR alarm PCI Uncorrected error on dev 0000:00:03.0 which does not get cleared. The only way to clear this alarm is reboot of the device. There are 2 situations in which this alarm can be seen: 1. FPC is faulty: In rare FPC fault cases, the PCI Uncorrected error alarm might be seen along with FPC going to a Fault state as indicated by the show chassis fpc command. This will be accompanied by other FPC Major alarms. Once the faulty FPC is replaced with a good one, the alarm will still be seen, and a reboot is required to clear this alarm. Post identification of the fault and FPC replacement, this alarm is harmless, and FPC state can be confirmed via the show chassis fpc command. 2. Ungraceful OIR: The ungraceful removal of FPCs is not recommended on QFX5700. This operation might result in PCI Uncorrected Error alarm. Please use one of the following two methods to do a graceful FPC OIR removal: a. Execute the request chassis fpc slot <slot > offline command from the CLI. b. Press the Offline Button for 1 second on the FPC to offline the FPC. Once the FPC is gracefully offlined both LEDs - PWR and STS will go off. The FPC can be removed at this point. PR1620197

  • Unexpected intermittent carrier transitions are seen on QSFP56-DD-400G-CR8-CU-2.5M cable after flapping the interface. Carrier Transitions counter should increment by 2 after flapping the interface. PR1645327

Infrastructure

  • Enabling MPLS traffic engineering will cause LDP session not to come up, the reason behind is that the underlying TCP connection stays at SYN-SENT state. Disabling and deactivating the MPLS traffic engineering will solve this issue. PR1617629