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Known Limitations

Learn about known limitations in this release for SRX Series devices.

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

Chassis Clustering

  • 10GbE DAC cable is not supported at CTL or FAB link at SRX4100 and SRX4200 chassis cluster setup. PR1636365

  • In Z-mode configuration, sometimes the statistics of back-up session might not be correct on fail-over from primary to back-up. PR1667098

High Availability

  • In SRX4100 and SRX4200 devices, there is a hardware limitation of Intel 82599 NIC where maximum of 128 unit case MAC addresses and MAC filters are supported. For MNHA switching mode, if you define more than 127 virtual MACs on same revenue or AE interface, the extra (those beyond 127) virtual MAC filters could not be programmed to the NIC, so you would see traffics (towards those vMACs) got silently dropped. PR1687262

Infrastructure

  • When upgrading from Junos OS Release 21.2 and earlier to Junos OS Release 21.2 and later, validation and upgrade fails. Upgrading requires the use of the no-validate command. PR1568757

Platform and Infrastructure

  • On SRX4600 device, the CPU may overrun while performing sanity check due to incompatibility issues between ukern scheduler and Linux driver which might lead to traffic loss. PR1641517

VPNs

  • In some scenarios, the SRX5000 line of devices might show obsolete IPsec SA and NHTB entry even when the peer tear down the tunnel. PR1432925