Juniper Networks manual M120 Internet Router PIC Guide

M120 Internet Router PIC Guide

Software features

Cables and connectors

LEDs

Alarms, errors, and events

Instrumentation (counters)

■Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection (RED), weighted random early detection (WRED)

■Simple Network Management Protocol (SNMP): DS1 MIB, DS3 MIB

■Dynamic, arbitrary channel configuration

■Encapsulations:

■High-Level Data Link Control (HDLC)

■Frame Relay

■Circuit cross-connect (CCC)

■Translational cross-connect (TCC)

■Point-to-Point Protocol (PPP)

■Standard DS3 BNC coaxial cable interfaces

One tricolor per port:

■Off—Not enabled

■Green—Online with no alarms or failures

■Amber—Online with alarms for remote failures

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

■Alarm indication signal (AIS)

■Excessive zeros (EXZ)

■Far-end block error (FEBE)

■Frame error

■Idle code, Idle received

■Line code violation (LCV)

■Loss of signal (LOS)

■Out of frame (OOF)

■Parity bit (P-bit) disagreements

■Path parity error

■Yellow alarm bit (X-bit) disagreements

■Layer 2 per-queue and per-channel packet and byte counters

34■ Channelized DS3 IQ PIC