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:
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.
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.
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
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 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.
802.3 ah OAM.
802.1 ag OAM.
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
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)