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  • Support for FPC major alarm (SRX5400, SRX5600, and SRX5800 with SPC3)—In Junos OS Release 21.4R1, we’ve enhanced the following commands to show more details about the FPC major alarm:

    • show chassis error active
    • show chassis error active detail
    • show chassis error active fpc-slot slot-number
    • show chassis error active detail fpc-slot slot-number

    You can use these commands to identify and troubleshoot the hardware issues.

    [See show chassis errors active.]

  • Increase in AC redundancy mode to 2+2 for high-capacity high-line PEMs (SRX5400)—Starting in Junos OS Release 21.4R1, the SRX5400 device supports 2+2 AC redundancy mode on high-capacity high-line power entry modules (PEMs). The support for 2+2 redundancy mode increases the PEM's capacity from 2050 W to 4100 W.

    [See SRX5400 Services Gateway AC Power Supply Specifications.]