Juniper Networks M7I User Manual
Page 58
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Flexible Frame Relay
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Frame Relay
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Frame Relay for CCC
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Frame Relay for TCC
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Frame Relay port CCC
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High-Level Data Link Control (HDLC)
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HDLC framing for CCC
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HDLC framing for TCC
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MPLS CCC
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MPLS TCC
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Multilink Frame Relay (MLFR) UNI NNI (MFR FRF.16)
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Point-to-Point Protocol (PPP)
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PPP for CCC
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PPP for TCC
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Standard DS3 BNC coaxial cable interfaces
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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Yellow—Online with alarms for remote failures
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Red—Active with a local alarm; router has detected a failure
LEDs
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DS3 alarms:
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Alarm indication signal (AIS)
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Loss of frame (LOF)
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Loss of signal (LOS)
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Phase lock loop (PLL)
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Yellow alarm
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DS3 error detection:
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C-bit code violations (CCV)
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C-bit errored seconds (CES)
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C-bit severely errored framing seconds (CEFS)
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CRC errors
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Excessive zeros (EXZ)
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Far-end block error (FEBE)
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Far-end receive failure (FERF)
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Line errored seconds (LES)
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Parity bit (P-bit) code violations (PCV)
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Parity bit (P-bit) errored seconds (PES)
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Parity bit (P-bit) severely errored framing seconds (PSES)
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Severely errored framing seconds (SEFS)
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Unavailable seconds (UAS)
Alarms, errors, and
events
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Layer 2 per-queue and per-channel packet and byte counters
Instrumentation
(counters)
Copyright © 2010, Juniper Networks, Inc.
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M7i Multiservice Edge Router PIC Guide