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Key Features in Junos OS Release 22.4

Start here to learn about the key features in Junos OS Release 22.4. For more information about a feature, click the link in the feature description.

  • Pure EVPN Type 5 routes with EVPN-VXLAN (SRX Series and vSRX)—Starting in Junos OS Release 22.4R1, you can configure pure Type 5 routes in an Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN) environment. These devices use EVPN Type 5 routes to advertise IP prefixes for intersubnet connectivity within and across data centers.

    [See Understanding EVPN Pure Type 5 Routes and ip-prefix-routes.]

  • Source NAT port overload (cSRX, SRX1500, SRX4100, SRX4200, SRX4600, SRX5400, SRX5600, SRX5800, and vSRX)—Starting in Junos OS Release 22.4R1, We’ve updated the hash algorithm to allow for improved distribution of network traffic, when using the port overloading capability. Enabling better utilization per IP, as appropriate to the type of network traffic.

    The hash algorithm uses the reverse traffic from the server, matches the existing sessions, and reuses the same Network Address Translation (NAT) resources.

    You can configure the updated hash algorithm using the enhanced-port-overloading-algorithm statement at the [security nat source pool pool-name port] and [security nat source interface] hierarchy levels.

    [See pool (Security Source NAT) and source (Security Source NAT).]

  • Source NAT preserve range support (SRX Series)—Starting in Junos OS Release 22.4R1, we support a preserve range for the source NAT. You can assign a port within the same range as the incoming port, either 0 through 1023 or 1024 through 65,535.

    To enable the preserve range, configure the preserve-range statement at the [security nat source pool pool-name port] hierarchy level.

    [See pool (Security Source NAT) and preserve-range.]

  • Support for 1-Gbps speed on SRX5K-IOC4-10G card (SRX5400, SRX5600, and SRX5800)—Starting in Junos OS Release 22.4R1, you can change the speed configuration of a 10-Gbps port to operate at 1-Gbps. You can make this change by configuring the speed value as 1-Gbps in the set interfaces <intf-name> gigether-options speed 1g command. sAfter you commit the configuration, the operating speed of the 10-Gbps port changes to 1 Gbps.

    [See Port Speed on SRX5K-IOC4-MRATE.]

  • Support for PTP over Ethernet (hybrid mode) (ACX7509)—Starting in Junos OS Release 22.4R1, ACX7509 routers support Precision Time Protocol (PTP over Ethernet (hybrid mode) with the G.8275.1 telecom profile.

    PTP over Ethernet effectively implements the packet-based technology. This feature helps operators deliver synchronization services on packet-based mobile backhaul (MBH) networks.

    [See PTP Profiles and Precision Time Protocol Overview.]

  • Telemetry support for interfaces and chassis (EX2300, EX2300-MP, EX2300-C, EX2300-VC, EX3400, EX3400-VC, EX4100-MP, EX4100-F, EX4300-MP, EX4400-MP, EX4400, EX4650, QFX5110, QFX5120, QFX5200, and QFX5210)—Junos OS Release 22.4R1 introduces support for streaming operational state statistics and counters for chassis and interfaces using OpenConfig sensor paths. We also support the following new Junos-specific sensor paths for statistics that are unsupported in OpenConfig:

    • /state/chassis/

    • /state/interfaces/

    [See Telemetry Sensor Explorer.]

  • Telemetry support for PoE (EX2300, EX2300-MP, EX2300-C, EX2300-VC, EX3400, EX3400-VC, EX4100-MP, EX4100-F, EX4300-MP, EX4400-MP, EX4400, and EX4650)—Junos OS Release 22.4R1 introduces support for streaming operational state statistics and counters for PoE using the new Junos-specific sensor path /state/poe/.

    [See Telemetry Sensor Explorer.]

  • View or log out the LNS L2TP subscriber sessions associated with a routing instance (MX Series)—Starting in Junos OS Release 22.4R1, we've introduced the following two L2TP operational commands for MX Series devices that support BNG L2TP functionality. Use the following new operational commands to view or log out all the L2TP subscriber sessions simultaneously.

    • show service l2tp session routing-instance name
    • clear service l2tp session routing-instance name

    [See show service l2tp session routing-instance and clear service l2tp session routing-instance.]