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Resolved Issues

Learn about the issues fixed 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.

Class of Service (CoS)

  • The congestion details will be lost as ECN bits in DSCP are cleared after VXLAN decapsulation. PR1683438


  • The kernel crash would be observed in an EVPN multi-homed scenario. PR1649234

  • In EVPN-MPLS Mutihoming scenario DF election will get stuck in the Preference based state. PR1662954

  • The ARP/ND entries are not relearnt as expected on the spine with EVPN-VXLAN. PR1677521

General Routing

  • On Junos ACX/PTX/QFX platforms traffic blackholing can occur after interface flaps. PR1645488

  • The port LEDs do not light up when 40G physical interfaces are up. PR1660532

  • The dc-pfe process crash is observed with PTP Transparent clock on QFX platforms. PR1661602

  • IS-IS adjacency is not coming up through the Layer 2 domain. PR1663134

  • The DHCP offer packets will not be sent to the clients when the DHCP relay agent is configured over Type-5 EVPN. PR1664656

  • PVLAN IGMP packet is forwarded between Isolated ports and also duplicated to primary vlan port (Promiscous). PR1667069

  • Type-5 routes might not get programmed in Packet Forwarding Engine when the number of active interfaces and Vlan configured is high. PR1668352

  • Route table and multicast add/change requests are got queued in the KRT queue post deleting EVPN enabled configuration followed by the rpd restart. PR1669161

  • FPC1 is getting disconnected after ISSU and before switchover while checking ISSU status. PR1669702

  • EVPN multicast traffic may get impacted because of routes getting stuck in the kernel routing table (krt) queue. PR1670435

  • Packet drops are seen after flapping or changing a passive monitor interface. PR1671449

  • Flow sample packet is not sent to the collector when the destination is an ECMP path. PR1672121

  • The traffic doesn't re-route quickly causing traffic blackholing. PR1676740

  • Interfaces with QFX-10000-30C and QFX10000-30C-M Line Cards will not work properly. PR1677325

  • Firewall functions will not work as expected when egress firewall filter is configured. PR1679574

  • ARP resolution will fail on QFX5120 VC. PR1679684

  • BFD sessions will remain down in the EVPN-VxLAN scenario. PR1680757

  • The PFE process crashes from 21.4R1 version onwards on VMhost platforms. PR1681532

  • LLDP neighborship fails to come up with a Private VLAN configuration. PR1681614

  • The dcpfe crash seen with PTP configuration on Junos platforms supporting boundary clock. PR1683308

  • Traffic loss is seen when MAC flaps between the MC-AE interface and the ICL interface. PR1683771

  • Licenses on the device might become invalid when the device is upgraded from a legacy licensing-based release to an Agile licensing-based release. PR1684842

  • The protocol MTU for the IRB interface is not rolled back when the MTU of the IRB or IFD interfaces is modified or deleted. PR1685406

  • Traffic statistics verification fails as receiving packet count exceeds specified limit in evpn vxlan multicast scenario. PR1685467

  • Traffic via the ICL link to MC-AE peer box gets looped back to the VTEP tunnel on QFX5000 platforms. PR1687024

  • QFX5120 will drop ingress traffic on an l2circuit configured interface on continuous flaps. PR1687257

  • VXLAN configured on access port breaks L2 connectivity with the vxlan encapsulate-inner-vlan command. PR1687565

  • OVSDB certificate files are not copied from the primary to the backup. PR1687847

  • ARP resolution to the CE port having EP style AE with multiple VLANs would get fail in the EVPN-VXLAN scenario. PR1687861

  • The LLDP output packets are not transmitting on the em0 interface of Junos and Junos OS Evolved platforms. PR1688023

  • On QFX10008 and QFX10016 platforms fails to detect flaps even though the remote device connected has observed flaps. PR1688993

  • On QFX10008 devices, while verifying the show ethernet-switching global-mac-count | display xml command, global-mac-count is not as expected. PR1689127

  • Packet Loss seen on the EVPN-VXLAN spine router router. PR1691029

  • Traffic loss is observed when the ECMP path is IRB over aggregated Ethernet interface. PR1693424

  • PFE crash is seen on all Junos QFX5000 devices with L2PT configuration. PR1694076

  • On QFX5120-48YM devices, dot1xd.core-tarball.0.tgz is observed in 22.1R3 at #0x009113f0 in __mem_assert (func=0x5c5b5a "free_jemalloc", file=0x58d668 "../../../../../../src/daemon-infra/lib/libjtask/mem/task_mem_cookie_jemalloc.c", line=201, expr=0x5e98f4 "!\"Cookie RedZone Validation Failed\"") at ../../../../../../src/daemon-infra/lib/libjtask/mem/task_mem_barrier.c:74. PR1694129

  • Intra VLAN communication breaks in SP style config using VXLAN. PR1695058

  • BMP EOR is sent with wrong peer address causing BMP failure. PR1695320

  • On QFX5110-32Q Virtual Chassis, after loading "20.4R3-S5.3" dcpfe core is observed and device is unstable. PR1695943

  • The BFD session might be stuck in "Init" state on certain QFX5000 switches. PR1696113

  • Local multicast traffic forwarding issue can be seen on QFX5k in EVPN-VXLAN OISM setup. PR1697614

  • Traffic drop is observed after deleting or deactivating the logical interface. PR1697827

  • PE device changes an outer tag-id is translated on a local return environment. PR1697835

Interfaces and Chassis

  • em0 interface ppeed is reflecting as 10G instead of 1G. PR1636668


  • Traffic loss will be seen in an LDP->BGP-LU stitching scenario. PR1670334

Routing Protocols

  • BGP auto-discovery sessions does not work any more after an interface flap. PR1679950