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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.

EVPN

  • When duplicate-mac-detect feature is configured, if the mac moves from leaf to network in a VXLAN enviroment, the action discard does not take effect. The mac move is prevented. As an alternate, use the action shutdown port instead which is also one of the supported options. PR1871034

General Routing

  • A missing authorization vulnerability in the internal virtual routing and forwarding (VRF) of Juniper Networks Junos OS Evolved allows a local, low-privileged user to gain root privileges, leading to a system compromise. Please refer to https://supportportal.juniper.net/JSA100060 for more information. PR1765490

  • On QFX5130/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 will be dropped. PR1880166

  • USB disks with Junos OS Evolved images from 23.4R2-EVO 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 OS Evolved QFX platforms having OSPFv3 (Open Shortest Path First version 3) authentication with IPsec (Internet Protocol Security) configured, OSPFv3 IPsec packets are not being sent for OSPF processing, as they are treated as unknown multicast packets. This causes OSPF neighborship issues, leading to traffic disruption. PR1862778

Interfaces and Chassis

  • 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 vendor side on the QFX5700. Input Error and Framing are small in number it should not have significant impact on traffic.PR1848109