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    Understanding the P2-100GE-OTN PIC

    Starting with Junos OS Release 14.1R2 and 14.2, a 100-Gigabit Ethernet OTN PIC—P2-100GE-OTN—is supported on the FPC2-PTX-P1A FPC in PTX5000 routers. The P2-100GE-OTN PIC provides 4-port 100-Gigabit Ethernet interfaces, which are independently configurable in LAN PHY framing mode or in optical channel transport unit 4 (OTU4) mode. Each interface is terminated by means of a CFP2 transceiver. The FPC2-PTX-P1A FPC supports two P2-100GE-OTN PICs, in which each 100-Gigabit Ethernet port is mapped to a Packet Forwarding Engine in the FPC.

    Starting from Junos OS Release 15.1, you can perform the following on the P2-100GE-OTN PIC on PTX5000 routers:

    • You can configure the interfaces on this PIC to be a part of the mixed rates and mixed mode aggregated Ethernet bundles.

    • Port-based pseudowire class of service (CoS) classification which includes Layer 3 IPv4, IPv6, and MPLS classification for interfaces with ethernet-ccc encapsulation.

    The following sections explain this PIC in detail:

    Interface Features

    The following interface features are supported on a P2-100GE-OTN PIC:

    • 4-port 100-Gigabit Ethernet interfaces, which are independently configurable in LAN PHY framing mode or in OTU4 signal mode. Each interface is terminated by means of a CFP2 transceiver.

    • Each port maps to a single Packet Forwarding Engine in the FPC2-PTX-P1A FPC.

    • The interfaces are named with prefix et.

    • Gigabit Ethernet local loopback.

    • Link-level pause frames—You can halt the Ethernet interface from transmitting packets for a configured period of time.

    • Interface hold timer and interface damping—You can set the hold-time statement (in milliseconds) to damp interface transitions.

    • External clock

    • Nonstandard tag protocol identifier (TPID):

      • For each 100-Gigabit Ethernet port, you can configure up to eight TPIDs by using the tag-protocol-id statement at the [edit interfaces interface-name gigether-options ethernet-switch-profile] hierarchy level.

      • The tag-protocol-id statement can be configured only on the first port (port 0) of the PIC. If any other (nonzero) port has the tag-protocol-id configuration, the Routing Engine registers an error in the system log and the configuration is ignored.

      • The tag-protocol-id statement configured on port 0 of the PIC also applies to the rest of the ports on that PIC.

    • The interface Link Down event always generates an interrupt; however, the interface Link Up event does not generate an interrupt. Therefore, the interface link-up event is detected during the 1-second PIC periodic polling process.

    • Generic forward error correction (GFEC) (G.709) and no-FEC modes of operation.

    • Diagnostics tools:

      • Line loopback

      • Local loopback

    • Fast reroute (FRR)—Based on configurable pre-FEC, bit error rate (BER) is supported and is configured using the ber-threshold-signal-degrade statement at the [edit interfaces interface-name otn-options signal-degrade] hierarchy level.

    • jnx-ifotn.mib and otn-mib as defined in RFC 3591. Note that according to Junos OS security standard, configurable parameters are not supported through SNMP. Only the get operation is available through SNMP.

    • FEC statistics—corrected errors and corrected error ratio.

    • OTN payload pseudorandom binary sequence (PRBS) generation and checking by enabling or disabling PRBS with the prbs or no-prbs statement at the [edit interfaces interface-name otn-options] hierarchy level.

    • Optical channel data unit (ODU)-level delay measurement.

    • At the physical interface level, flexible-ethernet-service, ethernet-ccc, and ethernet-tcc encapsulations are supported. For the flexible-ethernet-service encapsulation, the logical level supports enet2, vlan-ccc, and vlan-tcc encapsulations.

    • At the logical interface level, dix, vlan-ccc, and vlan-tcc encapsulations are supported.

    • Interoperability between 100-Gigabit Ethernet interfaces with CFP transceiver and 100-Gigabit Ethernet interfaces with CFP2 transceiver in LAN PHY framing mode and in OTU4 mode.

    The following features are not supported on the P2-100GE-OTN PIC:

    • Source MAC learning for accounting

    • MAC policing

    • Physical interface-level encapsulations—vlan-ccc, extended-vlan-ccc, and extended-vlan-tcc

    • Logical interface-level encapsulation—vlan-vpls

    • VLAN rewrite for ccc encapsulation

    • Per-queue flow control

    • Generic framing procedure-framed (GFP-F) mapping modes over OTN

    • General communication channel (GCC)

    • OTN interface-level Automatic Protection Switching (APS)

    • Insertion, monitoring, and display of OTN header overhead byte

    • Black link MIB for integration with transponders

    • Optical harness support

    • Transport interface and state model (GR-1093)

    • Trace tone support

    • 15-minute and 1-day performance monitoring counters and historic counters

    Layer 2 and Layer 3 Features

    The following Layer 2 and Layer 3 features are supported on the P2-100GE-OTN PIC:

    • MAC detect link up and link down based on local fault signal or remote fault signal.

    • MAC statistics.

    • Flow control.

    • MAC oversized packet counters based on default MTU value or user-configured MTU value.

    • Per-port destination address MAC filter.

    • Per-port source address MAC filter.

    • Per-physical interface source address MAC filter.

    • Per-logical interface source address MAC accounting.

    • Maximum of 1000 source MAC filter per physical interface.

    • Maximum of 32,000 filter terms to share across all filter features.

    • Aggregated Ethernet supports 64 child links that can be configured using the set chassis aggregated-devices maximum-links configuration command.

    • Maximum of 1024 logical interfaces on an aggregated Ethernet physical interface.

    • Support for VLAN tagging, flexible VLAN tagging, and stacked VLAN tagging.

    • LACP.

    • Link protection.

    • 802.3 ah OAM.

    • 802.1 ag OAM.

    • MPLS FRR.

    • SNMP.

    • Supports per-VLAN queuing (using Packet Forwarding Engine).

    OTN Alarms and Defects

    The following OTN alarms and defects are supported on the P2-100GE-OTN PIC:

    • LOS—Loss Of Signal

    • LOF—Loss Of Frame

    • LOM—Loss Of Multiframe

    • OTU—Degrade

    • OTU—AIS

    • OTU—IAE

    • OTU—BDI

    • OTU—TTIM

    • OTU—Signal Degrade

    • OTU—Signal Fail

    • ODU—Signal Fail

    • OTU-FEC—Degrade

    • OTU-FEC—Excessive errors

    • ODU—Signal Degrade

    • ODU—AIS

    • ODU—BDI

    • ODU—OCI

    • ODU—LCK

    • ODU—TTIM

    • OPU—PTM

    TCA Alarms

    Threshold-crossing alarms (TCA) are alarms that are activated when a certain configurable threshold—near-end measurement threshold or far-end measurement threshold—is crossed and remains so until the end of the 15 minute interval for parameters such as OTU and ODU. The following alarms are supported:

    • Background block error threshold (BBE)

    • Errored seconds threshold (ES)

    • Severely errored seconds threshold (SES)

    • Unavailable seconds threshold (UAS)

    Modified: 2017-09-13