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Open Issues

Learn about open issues 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

  • QFX10000 platform drops the Veritas CFS heartbeat , as result the Veritas CFS cannot work. PR1394822

  • On QFX5100 platforms (both stand-alone and VC scenario) running Junos OS, occasionally during the normal operation of the device, PFE (Packet Forwarding Engine) can crash resulting in total loss of traffic. The PFE reboots itself following the crash. PR1679919

  • 4x25G channelized interfaces are not coming up after optics hot swap. PR1719758

  • When the remote end server or system reboots, QFX5100 platform ports with SFP-T 1G inserted might go into a hung state and remain in that state even after the reboot is complete. This might affect traffic after the remote end system comes online and resumes traffic transmission. PR1742565

  • In a QFX51200-48YM-8C VC setup, after a primaryship switch over fan tray of linecard might not be displayed in show chassis hardware and show chassis environment. There is no functional impact. PR1758400

  • On an Ethernet Virtual Private Network (EVPN) / Virtual eXtensible Local-Area Network (VXLAN) scenario, after removing an Aggregated Ethernet (AE) Interface along with its associated physical interface on a QFX5000 series device and then applying any configuration to the physical interface, the fxpc process crashes and the device undergoes an automatic reboot. PR1783397

  • On Junos OS QFX5100 and EX4600 Platforms, high storage utilisation is observed in /var/log due to uncompressed UKERN_GBL.log file. This can lead to low storage warnings and potential write errors for other system logs during that period. PR1804090

  • On all Junos QFX5000 platforms, traffic loss happens and the layer 3 interface cannot be deleted when many routes use the same layer 3 interface. QFX5000 is encapsulating the packets with the wrong DMAC(destination MAC ) and VNID(virtual network identifier) for a few IP addresses after disabling the interface. PR1808550

  • On all Junos OS QFX5000 platforms, with ECMP (Equal Cost Multi Path) configured, when there is any routing protocol change (like ISIS cost metric change), the protocol traffic on the network is dropped. PR1823601

  • The QFX10002-60C platforms migiht not send back ICMPv4/v6 reply packets properly due to defects leading to misprogramming of hardware. Ping with v4/v6 from another device to the QFX10002-60C platform will fail. PR1827286

  • On QFX5210/AS7816 platforms, when using forwarding-options custom profile , the PFE show pfe route summary hw outputs will differ as compared to the actual capacity of the HW for IPV4/IPV6 LPM route installation. As a result, when trying to scale to the maximum supported limits that are shown in the PFE output, will result in route installation errors/table full errors in the PFE. PR1841913

  • There exists a hidden CLI upgrade option to do "clean-install". Using CLI upgrade with this option will do a "nist" compliant secure-erase for SATA disks. This method of CLI upgrade needs to be used with caution since this will wipe clean all configs/logs/files on the SATA FS and re-install the image. PR1847058

  • On Junos OS EX4000 and QFX5120 platforms, the system fails to retrieve the necessary analyzer details. This prevents the port mirroring action from being applied in the filter entry. Consequently, the system defaults to the reject action, causing the traffic to be dropped, and packet captures do not appear.PR1856361

High Availability (HA) and Resiliency

  • Graceful Routing Engine Switchover (GRES) not supporting the configuration of a private route, such as fxp0, when imported into a non-default instance or logical system. Please see KB https://kb.juniper.net/InfoCenter/index?page=content & id=KB26616 resolution rib policy is required to apply as a work-around. PR1754351

User Interface and Configuration

  • On all Junos OS platform, configuration changes using Python script in ZTP does not work and leads to errors. The following errors are seen: warning: [edit system scripts op allow-url-for-python] not enabled >>> error: The remote op script execution not allowed. PR1718692

  • ZTP upgrade in dual RE fails if the image name has special characters. PR1851232