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Software Installation and Upgrade

  • Optimize reboot times by disabling default initialization and startup of certain Layer 2 applications (ACX7024, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved 23.4R1, when rebooting the device, the Layer 2 (L2) applications l2ald, l2ald-agent, l2cpd, and l2cpd-agent are initialized and started only if any of the following configuration hierarchy levels contain any configuration statements:

    • [edit interface interface-name unit number family ethernet-switching]

    • [edit vlans]

    • [edit routing-instance instance-name instance-type virtual-switch]

    • [edit routing-instance instance-name instance-type mac-vrf]

    • [edit protocols l2-learning]

    Additionally, l2cpd, and l2cpd-agent are initialized and started if the [edit protocols lldp] hierarchy level contains any configuration statements.

    As a result of this change, if your configuration already contains these configuration statements and you then delete all of them, these L2 applications stop running.

    [See request node reboot (re0 | re1) (Junos OS Evolved), request system reboot (Junos OS Evolved), and request system software add (Junos OS Evolved).]

  • Enhanced USB, console, AUX access management (PTX10004, PTX10008, and PTX10016)—Starting in Junos OS Evolved Release 23.4R1, users can now enable or disable USB, console, and AUX access. Users can mount USB mass storage devices as read-only, allowing only file viewing while blocking write attempts with a Read-only file system error. Port status remains persistent. Admins can remotely deactivate USB ports, forcibly un-mounting and disabling devices. Ongoing transactions on mounted devices will be gracefully aborted for system stability.

    [See show chassis usb storage.]