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Platform and Infrastructure

  • Dual-phase bootup (MX Series)—Starting in Junos OS Release 23.4R1, you can prevent the device from reaching an amnesiac state post-reboot by configuring the dual-phase-bootup feature before the reboot. When a device has a scaled configuration or has a lot of constraints to be validated, upon reboot it may take more than 45 minutes to finish. This lengthy reboot time exceeds the limit set for the watchdog timer. The watchdog timer going off can cause the device to reach an amnesiac state. To avoid reaching an amnesiac state during a future reboot, configure the dual-phase-bootup statement at the [edit system] hierarchy level. If you have configured the dual-phase-bootup statement before the reboot, the device picks up the rescue configuration from the next reboot. Post-reboot, the device’s operational state is active and the device automatically loads the last-configured user configuration (juniper.conf file), thus preventing the device from reaching an amnesiac state. To be able to commit the configuration for the dual-phase-bootup statement, you must already have created a rescue configuration (rescue.conf file). We recommend that you have a minimal rescue configuration.

    [See dual-phase-bootup and show dual-phase-bootup-status.]

  • Support for subscriber management functionality (MX10004, MX10008, and MX10016 using LC9600 line card)—Starting in Junos OS Release 23.4R1, we provide support for the following features:

    • Basic and advanced CoS and filters (IPv4 or dual stack) for:

      • Dynamic VLANs (DVLANs) with DHCP subscribers

      • DVLAN with Point-to-Point Protocol (PPP) subscribers

      • DVLAN and agent circuit identifier (ACI) with DHCP subscribers

      • DVLAN and ACI with PPP subscribers

      • Stacked DVLAN with DHCP subscribers

      • Stacked DVLAN with PPP subscribers

      • Pseudowire DVLAN with DHCP subscribers

      • Pseudowire DVLAN with PPP subscribers

    • DVLAN with L2TP access concentrator (LAC) (IPv4) basic and advanced CoS and filters

    • DVLAN with L2TP network server (LNS) (IPv4 and dual stack) basic CoS and filters

    • Advanced CoS and filters (IPv4 or dual stack) support for:

      • DHCP subscribers

      • PPP subscribers

    • L2TP tunnels

    • Subscriber services (customer solutions test scripts) processing

    • Scaling and performance for the following features:

      • DHCP subscribers with authenticated dynamic VLAN

      • DHCP subscribers with authenticated dynamic service VLAN (S-VLAN)

      • LNS subscribers

      • LAC subscribers

      • CoS service

      • Firewall service

    [See Features Supported on MX10008, and MX10016.]

  • Packet Forwarding Engine support on (MX10004) [See show pfe fpc.]