Juniper Networks M20 Manuel d'utilisateur télécharger pdf (Page 28)

Channelized OC12 PIC

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JUNOS 4.0 and laterSoftware release

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One OC12 port

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Power requirement: 0.23 A @ 48 V (10.8 W)

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12 DS3 channels

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Supports IP version 4 (IPv4) unicast and multicast as well as MPLS, Intermediate

System-to-Intermediate System (IS-IS), Open Shortest Path First (OSPF), and Border

Gateway Protocol (BGP)

Description

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ASIC-based, high-performance throughput on all ports

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Integrated DSU functionality with subrate and scrambling support for each DS3 channel

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Class-of-service support for each DS3 channel

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Dual-router SONET automatic protection switching (APS)

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Rate policing on input for each DS3 channel

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Rate shaping output for each DS3 channel

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Packet buffering, Layer 2 parsing

Hardware features

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M13/C-bit parity encoding

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Full instrumentation per DS3 channel

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DS3 diagnostics and loopback control

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DS3 alarm and event counting and detection

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DS3 Far-end Alarm and Control (FEAC) channel support

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Encapsulations:

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High-Level Data Link Control (HDLC)

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Frame Relay

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Circuit cross-connect (CCC)

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Translational cross-connect (TCC)

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Point-to-Point Protocol (PPP)

Software features

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Duplex SC/PC connector (RX and TX)

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Optical interface support—See Table 9 on page 29

Cables and connectors

One tricolor per port:

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Off—Not enabled

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Green—Online with no alarms or failures

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Amber—Online with alarms for remote failures

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Red—Active with a local alarm; router has detected a failure

LEDs

28 ■ Channelized OC12 PIC

M20 Internet Router PIC Guide

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Juniper Networks M20 Manuel d'utilisateur Page 28

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