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New and Changed Features

This section describes the new features and enhancements to existing features in Junos OS Release 14.2R8 for the PTX Series.

Hardware

  • Support for 4-port 100 Gigabit Ethernet OTN PIC (PTX5000)—Starting with Junos OS Release 14.2, a 4-port 100-Gigabit Ethernet OTN PIC—P2-100GE-OTN—is supported on the FPC2-PTX-P1A FPC in PTX5000 routers.

    [See Understanding the P2-100GE-OTN PIC.]

  • New AC PSM and PDU (PTX5000)—Starting with Junos OS Release 14.2, new AC power supply modules (PSMs) and power distribution units (PDUs) are added to provide power to the FPC2-PTX-P1A FPC and other components in a PTX5000 router. You can install two redundant AC PDUs, and each AC PDU supports up to eight PSMs. All PSMs are considered to be a part of single zone to provide power to a common power bus. Run the show chassis hardware operational mode command to view the AC PSM and PDU details.

    [See show chassis hardware.]

  • Support for P2-10G-40G-QSFPP PIC on the FPC2-PTX-P1A FPC (PTX5000)—Starting with Junos OS Release 14.2, the PTX5000 supports the P2-10G-40G-QSFPP PIC on the FPC2-PTX-P1A FPC. You can configure the P2-10G-40G-QSFPP PIC to operate in 10-Gigabit Ethernet mode or in 40-Gigabit Ethernet mode.

    [See P2-10G-40G-QSFPP PIC Overview.]

  • SFPP-10G-DT-ZRC2 (PTX Series)—The SFPP-10G-DT-ZRC2 tunable transceiver provides a duplex LC connector and supports the 10GBASE-Z optical interface specification and monitoring. The transceiver is not specified as part of the 10-Gigabit Ethernet standard and is instead built according to Juniper Networks specifications. The SFPP-10G-DT-ZRC2 transceiver supports WAN-PHY and LAN-PHY modes. On PTX Series routers, the SFPP-10G-DT-ZRC2 transceiver also supports OTN rates of 10.70923 Gbps (OTU2) and 11.0957 Gbps (OTU2E). To configure the wavelength on the transceiver, use the wavelength statement at the [edit interfaces interface-name optics-options] hierarchy level.

    The following interface modules support the SFPP-10G-DT-ZRC2 transceiver:

    PTX Series PICs:

    • 10-Gigabit Ethernet LAN/WAN OTN PIC with SFP+ (model number: P1-PTX-24-10G-W-SFPP)—Supported in Junos OS Release 13.2R5, 13.3R3, 14.1R2, 14.2, and later
    • 10-Gigabit Ethernet PIC with SFP+ (model number: P1-PTX-24-10GE-SFPP)—Supported in Junos OS Release 13.2R5, 13.3R3, 14.1R2, 14.2, and later

    For more information about interface modules, see the “Cables and Connectors” section in the Interface Module Reference for your router.

    [See 10-Gigabit Ethernet 10GBASE Optical Interface Specifications, PTX Series Interface Module Reference, and wavelength.]

  • CFP-100GBASE-ZR (PTX Series)—In Junos OS Release 13.3R6, 14.1R4, 14.2R3, and 15.1R1 and later, the CFP-100GBASE-ZR transceiver provides advanced dual polarization-quadrature phase shift keying (DP-QPSK) coherent digital signal processing (DSP) and forward error correction (FEC)-enabled robust tolerance to optical impairments and supports 80 km reach over single-mode fiber. The transceiver is not specified as part of IEEE 802.3, but is built according to Juniper Networks specifications. The following interface module supports the CFP-100GBASE-ZR transceiver:
    • 100-Gigabit Ethernet PIC with CFP (P1-PTX-2-100GE-CFP)

    For more information about the interface modules, see the “Cables and Connectors” section in the PTX Series Interface Module Reference.

    [See 100-Gigabit Ethernet 100GBASE-R Optical Interface Specifications and Supported Network Interface Standards by Transceiver for PTX Series Routers.]

Class of Service (CoS)

  • Per-port pseudowire class-of-service classification (PTX Series)—Starting with Junos OS Release 14.2, port-based pseudowire class-of-service (CoS) classification is supported on the PTX Series router.

    [See Pseudowire Subscriber Logical Interfaces Overview.]

  • Change in scaling number for rewrite rules (PTX Series)—Starting in Junos OS Release 14.2R4, the scaling number for a rewrite rule is reduced by one when the default EXP rewrite is used. This change in scaling number is introduced to:
    • Support all possible combinations of EXP rewrite rules.
    • Fix the issue of incorrect modification of EXP bits of the inner label by the default MPLS EXP rewrite rule during the label pop operation.

    [See CoS Features and Limitations on PTX Series Routers.]

General Routing

  • Configuring chassis ambient temperature to optimize the power consumption in PTX5000—The power management feature of PTX5000 is enhanced to manage the power supplied to the FPCs by configuring the ambient temperature of the chassis. You can set the ambient temperature of the chassis at 25° C, or 40° C. On system initialization, the power manager reads the ambient temperature and allocates power to the FPCs according to the power budget policy at that temperature. If any FPC consumes more power than the configured value for more than three minutes, the PWR Range Overshoot alarm is raised for that FPC, and the power manager overrides the configured ambient temperature setting of that FPC, and resets its ambient temperature to the next higher level and reallocates power according to the new temperature setting. All the overshooting FPCs remain in the dynamic ambient temperature mode until the next reboot, or until you override it with a CLI command. The power manager then resets the power budget of the FRUs, including the overshooting FPCs, according to the configured ambient temperature setting.

    To configure the ambient temperature, include the set chassis ambient-temperature statement at the [edit] hierarchy level.

    Note: If ambient temperature is not configured, then default ambient temperature is set as 55° C.

    PR1038995

    [See Monitoring the Power Consumption of PTX5000 FPCs by Configuring the Ambient Temperature , and Managing Power Allocated to PTX5000 FPCs on the Basis of Chassis Ambient Temperature Configuration.]

Interfaces and Chassis

  • 100-Gigabit Ethernet DWDM OTN PIC (PTX Series)—Starting in Junos OS Release 14.2, the 100-Gigabit dense wavelength division multiplexing (DWDM) optical transport network (OTN) PIC enhances the transport performance monitoring feature by adding new functionality. Transport performance monitoring includes the ability to configure threshold crossing alerts (TCAs) by using the tca configuration statement under the [edit interfaces interface-name otn-options] or [edit interfaces interface-name optics-options] hierarchy level. Configuring the TCA values enable you to receive early warnings, which makes it possible to proactively manage the link. In addition, the following new commands have been added:
    • show interface transport pm
    • clear interface transport pm

    [See tca.]

  • OTN support (PTX Series)—Starting with Junos OS Release 14.2, OTN features are supported on the 24-port 10-Gigabit Ethernet OTN PIC P1-PTX-24-10G-W-SFPP. This PIC is supported on the FPCs FPC-PTX-P1-A and FPC2-PTX-P1A in PTX5000 routers, and the FPCs FPC-SFF-PTX-P1-A and FPC-SFF-PTX-T in PTX3000 routers. The following OTN framing modes are supported:
    • 10-Gigabit Ethernet LAN PHY over OTU2e or OTU1e
    • 10-Gigabit Ethernet WAN PHY over OTU2

    The following forward error correction (FEC) types are supported:

    • GFEC (G.709)
    • EFEC (G.975.1 I.4)
    • UFEC (G.975.1 I.7)
    • None (no-FEC)

    The performance and state of packet transport for OTN and optics modules are monitored by using the transport-monitoring statement at the [edit interfaces] hierarchy level.

    [See Understanding the P1-PTX-24-10G-W-SFPP PIC and transport-monitoring.]

  • Support for REST interfaces (PTX Series)— Starting with Junos OS Release 14.2, PTX Series routers support REST interfaces for secure connection to Junos OS devices and execution of remote procedure calls, a REST API Explorer GUI enabling you to conveniently experiment with any of the REST APIs, and a variety of formatting and display options, including JSON support.

    [See REST API Guide.]

  • Synchronous Ethernet clock synchronization (PTX Series)—Beginning with Junos OS Release 14.2, Synchronous Ethernet clock synchronization is supported on the PTX Series router. This feature enables the selection of the best timing source based upon the Synchronization Status Message (SSM) TLV carried in the Ethernet Synchronization Message Channel (ESMC), specified in ITU-T G.8264. This selection process is used when primary and secondary clock sources are not already configured by the user.

    [See Configuring an External Clock Synchronization Interface for PTX Series Packet Transport Routers.]

  • Support for mixed-rate aggregated Ethernet bundles (PTX Series)—Beginning with Junos OS Release 14.2, bundling of mixed-rate links is supported on the same aggregated Ethernet interface on the PTX Series router. This feature supports aggregated Ethernet bundles composed of links with differing line speeds (10G, 40G, and 100G) on the same aggregated Ethernet interface, enabling egress unicast traffic load balancing based upon the egress link rate.

    Note: Mixed-rate aggregated Ethernet bundling is not applicable to multicast traffic.

    [See Configuring Aggregated Ethernet Interfaces on PTX Series Packet Transport Routers.]

  • Unified ISSU support on FPC2-PTX-P1A FPC and P2-100GE-CFP2 PIC (PTX5000)—Starting with Junos OS Release 14.2R2, unified in-service software upgrade (ISSU) is supported on the FPC2-PTX-P1A FPC and on the P2-100GE-CFP2 PIC in PTX5000 routers. Unified ISSU enables you to upgrade from an earlier Junos OS release to a later one with no disruption on the control plane and with minimal disruption of traffic.
  • Support for dual-rate speed (PTX Series)—Starting in Junos OS Release 13.3R3, 14.1R3, 14.2R2, and later for PTX3000, and Junos OS 14.2R2 and later for PTX5000, support for dual rate for the 24-port 10-Gigabit Ethernet PIC (P1-PTX-24-10GE-SFPP) enables you to switch all port speeds to either 1-Gigabit Ethernet or 10-Gigabit Ethernet. The default is 10 Gbps. All ports are configured to the same speed; there is no mixed-rate-mode capability. You can use either the SFP-1GE-SX or the SFP-1GE-LX transceiver for 1 Gbps. Changing the port speed causes the PIC to reboot.

    To configure all ports on the P1-PTX-24-10GE-SFPP to operate at 1 Gbps, use the speed 1G statement at the [edit chassis fpc fpc-number pic pic-number] hierarchy level. To return all ports to the 10-Gbps speed, use the delete chassis fpc fpc-number pic pic-number speed 1G command.

    [See speed (24-port and 12-port 10 Gigabit Ethernet PIC) and 10-Gigabit Ethernet PIC with SFP+ (PTX Series).]

Management

  • YANG module that defines the Junos OS configuration hierarchy (PTX Series)—Starting with Junos OS Release 14.2, Juniper Networks provides a YANG module that defines the Junos OS configuration hierarchy. You can download the YANG module that defines the complete Junos OS configuration hierarchy for all devices running that Junos OS release from the Juniper Networks website at http://www.juniper.net/. You can also generate a YANG module that defines the device-specific configuration hierarchy by using the show system schema module configuration format yang operational mode command on the local device. The Juniper Networks YANG module, configuration, is bound to the namespace URI http://yang.juniper.net/yang/1.1/jc and uses the prefix jc.

    [See Understanding YANG on Devices Running Junos OS.]

MPLS

  • Egress peer engineering of service labels (BGP, MPLS) and egress peer protection for BGP-LU (PTX Series)—Beginning with Junos OS Release 14.2R4, you can enable traffic engineering of service traffic, such as MPLS LSP traffic between autonomous systems (ASs), using BGP-labeled unicast for optimum utilization of the advertised egress routes. You can specify one or more backup devices for the primary egress AS boundary router. Junos OS installs the backup path in addition to the primary path in the MPLS forwarding table, which enables MPLS fast reroute (FRR) when the primary link fails.

    [See Egress Peer Protection for Labeled BGP Overview.]

Multicast

  • Multicast make-before-break feature (PTX Series)—Beginning with Junos OS Release 14.2, multicast make-before-break (MBB) transitioning between Multicast Beam Table (MBT) trees is supported on PTX Series routers. This feature improves multicast performance by making the new tree before breaking the existing tree, minimizing the amount of multicast traffic dropped during the transition.

    [See Multicast Overview.]

Network Management and Monitoring

  • Enhancements to SNMP statistics operational mode commands (PTX Series)—Beginning with Junos OS Release 14.2, you can use the show snmp stats-response-statistics command to view the statistics of SNMP statistics responses sent from the Packet Forwarding Engine during the MIB II process (mib2d). In addition, you can use the subagents option in the show snmp statistics command to view the statistics of the protocol data units (PDUs) and the number of SNMP requests and responses per subagent. The subagents option also helps you to view the SNMP statistics received from each subagent per logical system.

    [See show snmp stats-response-time and show snmp statistics.]

  • Enhancement to reduce the time taken for performing system commit (PTX Series)—Beginning with Junos OS Release 14.2, you can configure the delta-export statement at the [edit system commit] hierarchy level to reduce the time taken to commit the configuration changes.

    [See commit (system) and delta-export.]

Routing Policy and Firewall Filters

  • Input filter-based forwarding (PTX Series)—Beginning with Junos OS Release 14.2, filter-based forwarding on ingress traffic is supported on the PTX Series router. This feature enables the user to configure a filter that classifies packet flows based upon packet fields and redirect the packets through different user-configured forwarding tables. Input filter-based forwarding is supported for IPv4 and IPv6 traffic only.

    [See Filter-Based Forwarding Overview.]

  • New walkup statement available (PTX Series)—Starting in Junos OS Release 14.2, a new walkup feature is available. The walkup feature allows the user to change the default route filter prefix match behavior, so that the evaluation walks up multiple route filters contained within a single policy term, in order to allow matches on terms other than the default longest match. This can be applied globally or locally to a single policy. This feature can be configured in the main routing instance and in logical systems, but not in routing instances.
  • Support for logical queue-depth in the PFE for IP options packets for a given protocol (PTX Series)—Starting with Junos OS Release 14.2R6, you can configure logical queue-depth in the PFE for IP options packets for a given protocol. The queue-depth indicates the number of IP options packets which can be enqueued in the PFE logical queue, beyond which it would start dropping the packets.

Routing Protocols

  • Remote LFA support for LDP in IS-IS (PTX Series)—Beginning with Junos OS Release 14.2, you can configure a remote loop-free alternate (LFA) to extend the backup provided by the LFA in an IS-IS network. This feature is useful especially for Layer 1 metro-rings where the remote LFA is not directly connected to the PLR. The existing LDP implemented for the MPLS tunnel setup can be reused for the protection of IS-IS networks and subsequent LDP destinations, eliminating the need for RSVP-TE backup tunnels for backup coverage.

    To configure remote LFA over LDP tunnels, include the remote-backup-calculation statement at the [edit protocols isis backup-spf-options] hierarchy level and the auto-targeted-session statement at the [edit protocols ldp] hierarchy level.

    [See Example: Configuring Remote LFA over LDP Tunnels in IS-IS Networks.]

Software Installation and Upgrade

  • Unified ISSU support (PTX3000)—Beginning with Junos OS Release 14.2R3, unified in-service software upgrade (ISSU) is supported on the PTX3000 router. Unified ISSU enables you to upgrade between two different Junos OS releases with no disruption on the control plane and with minimal disruption of traffic. Unified ISSU is not supported on the P1-PTX-24-10G-W-SFPP PIC.

    [See Unified ISSU System Requirements.]

User Interface and Configuration

  • Support for allowing commands in a Junos OS op script (PTX Series)—Starting with Junos OS Release 14.2, you can specify a regular expression that defines which commands to explicitly allow during execution of a Junos OS op script. The commands that you specify are performed even if a user login class denies that command. The permission to perform commands within a script applies to all users.

    [See Defining Commands to Allow in an Op Script.]

Modified: 2017-12-12