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What's Changed

Learn about what changed in this release for MX Series routers.

Junos Telemetry

  • Standards Compliance for Data Type— To comply with the new nomenclature standards for YANG models, the sensor values with data type "Enumeration" that were previously in uppercase letters are now in lowercase letters.

    Table 1: Data Type
    Leaf Resource Path Data Type: Old Format Data Type: New Format
    poe-management /state/poe/controllers/controller/poe-management

    Enumeration

    • STATIC

    • DYNAMIC

    • CLASS

    Enumeration

    • static

    • dynamic

    • class

    [See Junos YANG Data Model Explorer.]

General Routing

  • A new counter Sessions hit due to high rate is added to show services service-sets screen-session-limit-counters command for all subscriber traffic. This counter tracks the sessions that come up on the screen irrespective of the alarm-without-drop configuration. When "alarm-without-drop" option is disabled, all the counters display updated statistics. When alarm-without-drop is enabled, then: - The screen-drop counters on "show services service-sets statistic screen-drop" command do not increase. - The "sessions hit due to high rate" value is displayed.

    [See alarm-without-drop (IDS Screen Next Gen Services), show services service-sets statistic screen-drops (Next Gen Services), and show services service-sets statistic screen-session-limit-counters (Next Gen Services).]

  • SFP Optics LOS alarms (MX Series)—SFP Optics don not support Tx laser disabled alarm, Tx loss of signal functionality alarm, and Rx loss of signal alarm as diagnostics output.

    [See show interfaces diagnostics optics.]

  • When you run the request vmhost zeroize command to zeroize a single Routing Engine on a dual Routing Engine device, the CLI incorrectly displays a message indicating that it will zeroize both Routing Engines.

  • G.8275.1 profile configuration with PTP, SyncE, and hybrid mode (Junos)—On all Junos platforms, when configuring the G.8275.1 profile, it is mandatory to configure Precision Time Protocol (PTP), Synchronous Ethernet (SyncE), and hybrid mode. Earlier, the system would not raise a commit error even if the required hybrid and SyncE configurations were missing while configuring G.8275.1 profile. However, going forward you will not be able to configure the G.8275.1 profile without configuring PTP, SyncE and hybrid mode to be compliant with the ITU-T standards.

    [See G.8275.1 Telecom Profile.]

  • Validation of /vm-primary mount during JDM installation or upgrade (Junos Node Slicing External Server Deployment)—During installation or upgrade of the Juniper Device Manager (JDM) on external servers running Junos Node Slicing Release 25.2 or later, an issue occurred with the validation of the /vm-primary mount that stores the GNF images. When /vm-primary was mounted using logical volumes (LVM), JDM would fail to detect that the underlying storage was an SSD. This issue is now fixed. However, the fix introduces a new dependency on the LVM2 package in the host OS. This package is included by default in standard installations of both RHEL and Ubuntu external servers. However, it is advised that you check if the LVM2 package is already installed on the host before installing or upgrading JDM.

  • On the MPC7E-10G line card, when you configure the 10-Gigabit Ethernet ports to operate as 1-Gigabit Ethernet ports, use the speed statement at both the edit interfaces interface name gigether-options and edit interfaces interface name hierarchy levels.

  • Control Maximum 802.1X Client Connections per Interface—By default, dot1x interfaces configured in multiple supplicant mode have a client limit of 100 authenticated connections per interface. Any additional connection attempts beyond this limit will be automatically blocked.

  • log-tag functionality: The log-tag functionality is introduced in [set services service-set]

  • Default route installation for non-default routing instances with iked process (MX480 and MX960)—You can install default route when the st0 interface is in a non-default routing instance. This enhancement supports migration from MS-MPC to SPC3 as MX-SPC3 injects these routes through auto route insertion (ARI) for traffic selector routes. The configuration facilitates route installation in specified routing instances.

    [See Traffic Selectors in Route-Based VPNs.]

  • In on-device packet capture, the self-mirror-start value range now begins at 45 seconds (MX304, MX480, MX960, MX2010, MX2020, MX10003, MX10004)—For on-device packet capture, you set a self-mirror-start value that determines the duration of the packet capture. The value range now starts at 45 seconds; it previously started at 1 second.

    [See request forwarding-options port-mirroring instance family self-mirror-start.]

Network Management and Monitoring

  • Ephemeral database default commit synchronize model changed to synchronous (EX2300, EX2300-MP, EX2300-C, EX2300-VC, EX3400, EX3400-VC, EX4000-8P, EX4000-12MP, EX4000-12P, EX4000-12T, EX4000-24MP, EX4000-48MP, EX4000-24P, EX4000-24T, EX4000-48P, EX4000-48T, EX4100-24MP, EX4100-24P, EX4100-24T, EX4100-48MP, EX4100-48P, EX4100-48T, EX4100-F-12P, EX4100-F-12T, EX4100-F-24P, EX4100-F-24T, EX4100-F-48P, EX4100-F-48T, EX4100-H-12MP, EX4100-H-12MP-DC, EX4100-H-24F, EX4100-H-24F-DC, EX4100-H-24MP, EX4100-H-24MP-DC, EX4300-MP, EX4300VC, EX4400-24MP, EX4400-24P, EX4400-24T, EX4400-24X, EX4400-48F, EX4400-48MP, EX4400-48MXP, EX4400-48P, EX4400-48T, EX4400-48XP, EX4600-VC, EX4650, EX4650-48Y-VC, EX9204, EX9208, EX9214, MX204, MX240, MX304, MX480, MX960, MX2008, MX2010, MX2020, MX10004, and MX10008)—We've changed the default commit synchronize model for the ephemeral database from the asynchronous model to the synchronous model. With this change, we've deprecated the allow-commit-synchronize-with-gres statement and only the synchronous model supports synchronizing ephemeral data on devices that have graceful Routing Engine switchover (GRES) or nonstop active routing (NSR) enabled.

    [See Understanding Ephemeral Database Commit Synchronize Models.]

  • Deprecation of shell option—The shell option no longer requires a separate configuration and is now the default behavior. Deprecating the shell option enhances efficiency and simplifies management tasks.

User Interface and Configuration

  • Generate genstate YANG modules on Junos devices—You can use show system schema operational command or equivalent RPC to generate the genstate YANG modules in the specified output directory on a device.

    [See show system schema.]