Known Limitations

Learn about limitations 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

IPv4 packets dropped due to egress MTU mismatch are not shown in the show interfaces extensive output in the CLI . To get these dropped packet statistics, the debug commands from the forwarding process must be used. PR1768752
On QFX5240-64OD/64QD platform, the error statistics on the management port re0:mgmt-0 does not reflect the errors experienced including link flaps, FCS erorrs etc. PR1791886
On QFX5240 and QFX5230 platforms with Junos OS Evolved 23.4R2, when PFC watchdog feature configured with recovery action of drop and if PFC storm continuously detected and recovered, CRC error counter could increase with small number under show interface extensive interface output. These CRC errors could occur only for larger frames (mtu>1024) received at high rate. Packet drops are seen on the interface due to PFC watchdog action of drop, which is expected. CRC errors are not seen with PFC watchdog recovery action of forward. PR1807420
On QFX5700E, pci 0000:xx:xx.x BAR xx: failed to assign messages are seen during boot in the logs. These messages have no impact to functionality. PR1807706
Storm control does not work on multicast packets on QFX5130, QFX5700 platform if broadcast packets are excluded from the storm control profile. To support IGMP, MLD snooping functionality, we've added flood in vlan rules in ASIC pipeline which causes mcast packets to be flooded as broadcast packets due to BCM TD4 ASIC limitation. PR1813514