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Open Issues

Learn about open issues in Junos OS Release 21.4R1 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.


  • With the shared-tunnels enabled, the AR tunnels do not get formed on the DC GWs for the MAC-VRF instances. PR1584790

  • Need to modify I-ESI workflow on DC-GW. PR1600600

  • Few ARP/ND/MAC entries for VLANS gets missed with the MAC-VRF configuration. PR1609322

  • MAC-IP that moves across Layer 2 DCI does not get updated in the MAC-IP table of the GW nodes for VLANs that have translate VNI configuration. PR1610432

General Routing

  • On the QFX10000 line of switches, the show pfe filter hw filter-name command does not retrieve the Packet Forwarding Engine program. PR1495712

  • On the QFX5100 line of switches that does not run the QFX-5E codes (non TVP architecture), when you install image with Broadcom SDK upgrade (6.5.X), the CPU utilization might go up by around 5 percent. PR1534234

  • On the QFX5000 line of switches, route leaking does not work for IPv4 routes if the mask is less than 16 and for IPV6 routes if the mask is less than 64. PR1538853

  • FPC might not be recognized after power cycle (hard reboot). PR1540107

  • On the QFX10002-60c line of switches, NP-100G-DAC-3M/5M does not start on QFX10002-60C switches. PR1555955

  • On the QFX10002-60c line of switches, after DUT or remote 100G DAC interfaces flaps, the carrier transition counters increases unexpectedly. PR1562857

  • The OSPF session over IRB might not come up in the EVPN-VXLAN scenario. PR1577183

  • Partial traffic loss occurs after disabling the protected link on R2 due to which convergence delay for link-protection for PE1_P link occurs. PR1579931

  • On the QFX5100 Virtual Chassis, the DHCP ACK messages do not get generated while verifying Smart Relay with interfaces in the routing instance. PR1581025

  • When you commit soft loopback port and analyzer configurations, mirror ingress to local port does not work. PR1581542

  • On the QFX10002-60Cline of switches, complete packet gets lost while testing the VACL ingress terms scale configuration. PR1581767

  • After reboot, the file permissions gets changed for the /var/db/scripts files. PR1583839

  • On the QFX5000 line of switches, the dcpfe process might crash. PR1588704

  • The IS-IS adjacency might fail to be formed if you configure the MTU size of an IRB interface with a value great than 1496 bytes. PR1595823

  • On the QFX10008 line of switches, the Routing Engine1 goes to the database prompt when loading the profile configurations over LRM configurations. PR1598814

  • On the QFX5200 line of switches, the dcpfe process generates core files while testing ISSU from Junos OS Release 21.1R1.11 to Junos OS Release 21.2R1.7. PR1600807

  • On the QFX10002 line of switches, the IGP convergence time gets degraded. PR1602334

  • On the QFX5120 line of switches, traffic loss occurs when the primary link gets disabled with the aggregated Ethernet interface Link Protection configuration. PR1604350

  • On the QFX10002-72q line of switches, the sFlow samples do not get generated for the transit MPLS traffic carrying IPv6. PR1607497

  • On the QFX10002-60C line of switches, the output-mac-control-frames and output-mac-pause-frames counters do not increase. PR1610745

  • On the QFX5100 Virtual Chassis, traffic loss occurs while testing the 118 AE groups. PR1611162

  • On the QFX10002, QFX10008, and QFX10016 line on switches, on scaling more than 80,000 ARP/NDP, the prds_jpf_nh_token_change: Token change failed for rnh error messages gets generated. PR1616224

  • On the QFX5120 line on switches, the tvp_is_qsfp_has_single_led ioctl call failed ret:-1 error message gets generated while loading the build. PR1621630

  • When the IFA2.0 init feature enabled on switch and flows are sampled, incorrect pps and bps statistics gets displayed at the logical child interface level on the ingress and egress ports. PR1620139

Interfaces and Chassis

  • On the QFX5120 line of switches, multiple mclag-cfgchkd process generates core files after loading the recent Junos OS Release 20.4R2-S1 build. PR1599025

Layer 2 Features

  • Adding one more sub-interface logical interface to an existing interface causes 20 to 50 milliseconds traffic drop on the existing logical interface. PR1367488

Platform and Infrastructure

  • The offer message from the server reaches the relay agent. However, the offer message does not get forwarded to IRBs on which clients are connected. PR1530160

Routing Protocols

  • When you remove igmp-snooping from the device, the device might encounter inconsistency in the mcsnoopd process. PR1569436

  • The mcsnoopd process might generate core files at rt_mcnh_nh_add_del, rt_mcnh_nh_add_with_table_id, mc_build_nh_for_bd_evpn_extended, mc_bd_create_or_update_all_fld_grp_routes. PR1605393