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Open Issues

Learn about open issues Junos OS Release 21.3R2 for EX Series switches.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

Forwarding and Sampling

  • The fast-lookup-filter with match that are not supported in the FLT hardware might cause the traffic to drop. PR1573350

Interfaces and Chassis

  • On all Junos OS platforms with VRRP (Virtual Router Redundancy Protocol) implemented, if you configure startup-silent-period as one second and the state of any interfaces included in the VRRP-group changes, the vrrpd (VRRP daemon) to crash, impacting the related services. However, configuring startup-silent-period between two and 2000 seconds, and restarting vrrpd helps to restore the services. PR1646480

Junos Fusion Enterprise

  • On a rare corner case, the Anchor IFL does not get created in time, which results in assert core during the SD provisioning state. PR1555597

Platform and Infrastructure

  • When you add VLAN as an action for changing the VLAN in both the ingress and egress filters, the filter does not get installed. PR1362609

  • On EX9214 switches, if the MACsec-enabled link flaps after reboot, the following error message get generated errorlib_set_error_log(): err_id(-1718026239).

  • When you run the show pfe filter hw filter-name filter name command, the command fails to retrieve the Packet Forwarding Engine programming details of the filter. PR1495712

  • A delay of 35 seconds gets added in the reboot time in Junos OS Release 20.2R1 compared to Junos OS Release 19.4R2. PR1514364

  • On all Junos OS platforms, traffic loss might be observed due to a rare timing issue when you perform frequent Interface Bridge Domain (IFBD) configuration modifications. This behavior is seen when the Packet Forwarding Engine receives out-of-order IFBD(s) from the Routing Engine and might lead to the fxpc process crash and drops traffic. PR1572305

  • Pause frames counters do not get incremented when you send the pause frames. PR1580560

  • On EX2300, EX3400, EX4300, EX4600, and EX4650 switches with the chip as the Packet Forwarding Engine, if you enable IS-IS on an IRB interface and configure the MTU size of the IRB interface with a value greater than 1496 bytes, the IS-IS hello (IIH) PDUs with jumbo frame size (that is, greater than 1496 bytes) might be dropped and not sent to the IS-IS neighbors. PR1595823

  • On EX4600 switches, default configuration under ge-0/0/* might be missed after performing ZTP. PR1614098

  • When you configure the DHCP relay mode as no-snoop on the EVPN/VXLAN environment, the offer gets dropped due to incorrect ASIC programming. PR1530160

  • On EX4400-48MP switches, the virtual machine might generate core files and the Virtual Chassis might split with the multicast scale scenario. PR1614145