Specifications

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Cisco ONS 15454 Installation and Operations Guide, R3.2
March 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Electrical Cards
8.5.2 DS1 and DS1N Card Performance Monitoring Parameters
Figure 8-13 shows the signal types that support far-end PMs. Far-end VT and STS path performance
monitoring is supported for the DS1 card. Far-end DS1 path performance monitoring is not supported
for the DS1 card. Figure 8-14 shows where overhead bytes detected on the ASICs produce performance
monitoring parameters for the DS1 and DS1N cards.
PPJC-Pgen
Positive Pointer Justification Count, STS Path Generated (PPJC-Pgen) is
a count of the positive pointer justifications generated for a particular path
to reconcile the frequency of the SPE with the local clock.
NPJC-Pgen
Negative Pointer Justification Count, STS Path Generated (NPJC-Pgen)
is a count of the negative pointer justifications generated for a particular
path to reconcile the frequency of the synchronous payload envelope
(SPE) with the local clock.
Table 8-9 Far-End Line Layer PMs for the EC-1 Card
Parameter Definition
CV-L
Far-End Line Code Violation (CV-L) is a count of BIP errors detected by
the far-end line terminating equipment (LTE) and reported back to the
near-end LTE using the REI-L indication in the line overhead. For
SONET signals at rates below OC-48, up to 8 x N BIP errors per STS-N
frame can be indicated using the REI-L. For OC-48 signals, up to 255 BIP
errors per STS-N frame can be indicated. The current CV-L second
register is incremented for each BIP error indicated by the incoming
REI-L.
ES-L
Far-End Line Errored Seconds (ES-L) is a count of the seconds when at
least one line-layer BIP error was reported by the far-end LTE or an
RDI-L defect was present.
SES-L
Far-End Line Severely Errored Seconds (SES-L) is a count of the seconds
when K (see GR-253-CORE for values) or more line-layer BIP errors
were reported by the far-end LTE or an RDI-L defect was present.
UAS-L
Far-End Line Unavailable Seconds (UAS-L) is a count of the seconds
when the line is unavailable at the far end. A line becomes unavailable at
the far end when ten consecutive seconds occur that qualify as SES-LFEs
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as SES-LFEs.
FC-L
Far-End Line Failure Count (FC-L) is a count of the number of far-end
line failure events. A failure event begins when RFI-L failure is declared,
and it ends when the RFI-L failure clears. A failure event that begins in
one period and ends in another period is counted only in the period where
it began.
Table 8-8 Near-End SONET Path BIP PMs for the EC1 Card (continued)
Parameter Definition