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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Optical Cards
Table 8-13 Near-End Protection-Switching PMs for the OC-3 Cards
Parameter
Definition
For information about Troubleshooting UPSR switch counts, see the alarm troubleshooting
information in
Chapter 14, “Alarm Troubleshooting”
. For information about creating circuits that
perform a switch, see
Chapter 6, “Circuits and Tunnels.”
PSC (1+1 protection)
In a 1+1 protection scheme for a working card, Protection Switching
Count (PSC) is a count of the number of times service switches from a
working card to a protection card plus the number of times service
switches back to the working card.
For a protection card, PSC is a count of the number of times service
switches to a working card from a protection card plus the number of
times service switches back to the protection card. The PSC PM is only
applicable if revertive line-level protection switching is used.
Note
BLSR is not supported on the OC-3 card; therefore, the PSC-W,
PSC-S and PSC-R PMs do not increment.
PSD
Protection Switching Duration (PSD) applies to the length of time, in
seconds, that service is carried on another line. For a working line, PSD
is a count of the number of seconds that service was carried on the
protection line.
For the protection line, PSD is a count of the seconds that the line was
used to carry service. The PSD PM is only applicable if revertive
line-level protection switching is used.
Note
BLSR is not supported on the OC-3 card; therefore, the Protection
Switching Duration-Working (PSD-W), Protection Switching
Duration-Span (PSD-S), and Protection Switching Duration-Ring
(PSD-R) PMs do not increment.
Table 8-14 Near-End SONET Path H-Byte PMs for the OC-3 Card
Parameter
Definition
Note
On CTC, the count fields for Positive Point Justification Count (PPJC) and Negative Pointer
Justification Count (NPJC) PMs appear white and blank unless they are enabled on the
Provisioning > Line tabs. See
Pointer Justification Count Reference, page 8-13
PPJC-Pdet
Positive Pointer Justification Count path-detected (PPJC-Pdet) is a count
of the positive pointer justifications detected on a particular path on an
incoming SONET signal.
NPJC-Pdet
Negative Pointer Justification Count path-detected (NPJC-Pdet) is a count
of the negative pointer justifications detected on a particular path on an
incoming SONET signal.
PPJC-Pgen
Positive Pointer Justification Count 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 path-generated (NPJC-Pgen) is a
count of the negative pointer justifications generated for a particular path
to reconcile the frequency of the SPE with the local clock.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...