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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 Evolved defects, use the Juniper Networks online Junos Problem Report Search application.

General Routing

  • QFX5700 MacSec: Minor packet drops (0.0000001%) observed when MacSec is enabled.PR1816407

  • USB disks with Junos OS Evolved images from Junos OS Evolved 23.4R2 onwards might not be detectable by Windows. They still have valid images, and can be used for Junos OS Evolved installs. The only issue is that new images cannot be installed on these USB disks because Windows no longer recognizes these USB drives.PR1819846

  • On Junos Evolved platform QFX5230 and QFX5240, any type of interface flap will cause the Priority-based Flow Control (PFC) generation stops from the switch under storm condition after neighbor link flap.PR1827068

  • Egress port speed field in the IFA 2.0 Metadata stack is not supported on QFX5230 and it is always '0' irrespective of the egress port. speed.PR1860574

  • On QFX5000 Junos OS Evolved platforms interface counter sensor names are modified as per OpenConfig YANG model details. https://gnats.juniper.net/web/default/1860876/attachments/interface_counter s_cvbc_details.docxPR1860876

  • On Junos Evolved OS platforms like QFX5000 (QFX5230/QFX5240), ungraceful swapping a 400G DAC with a 400G DR4 optic (or vice-versa) might lead to traffic loss.PR1862711

  • Graceful JOJI of FPC is the recommended way instead of ungraceful.PR1874712

  • There are only the logs seen related to getDieTemperature. There is no functionality effected and CPU is not effected. System is also stable. PR1878950

  • On QFX5130 or QFX5700 platforms, in Ethernet VPN-Virtual Extensible LAN (EVPN-VxLAN) scenario, the Explicit Congestion Notification (ECN) Congestion Experienced (CE) bit is not be set for ECN-capable traffic when there is congestion. Since the CE bit is not set, packets are dropped. PR1880166

Interfaces and Chassis

  • On QFX5230-64CD platform, 400G DAC cable of 2.5m length and 4X100G DAC BO might not link up with some peer devices. This issue is not seen with all peer devices. If this happens, please replace the 2.5m cable with a 1m DAC cable or use supported 400G Optics instead.PR1747315

  • Link with the DAC (SFP56-50G-DAC-3M ) comes up with 25G default speed configuration when switch is rebooted. Hence, When 50G speed config is applied , peer side sees the link flap.PR1836697

  • Issue is not related to QFX5220 and not related to optics (QSFP56-DD-400GBASE-DR4) as mentioned in the PR synopsis and description. We encounter this issue is happening on the Marvel Line-side TX on the QFX5700. Input error and framing are small in number it should not have significant impact on traffic.PR1848109

  • Junk values are shown for Carrier transition counter sometimes on initiating clear interfaces statistics all command and picd app restart. This issue is observed on QFX5220-32CD, QFX5230-64CD, QFX5240-64OD.PR1864375

  • To ensure proper functionality of hitless restart/ISSU, do not mark any port as "unused".PR1868377