Specifications

8-38
Cisco ONS 15454 Installation and Operations Guide, R3.2
March 2002
Chapter 8 Performance Monitoring
Performance Monitoring for Optical Cards
Table 8-34 Near-End Line Layer PMs for the OC-3 Cards
Parameter Definition
For information about Troubleshooting UPSR switch counts, see the alarm troubleshooting
information in the Cisco ONS 15454 Troubleshooting and Maintenance Guide, Release 3.2. 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 PSD-W,
PSD-S, and PSD-R PMs do not increment.
Table 8-35 Near-End SONET Path H-byte PMs for the OC-3 Card
Parameter Definition
Note On CTC, the count fields for PPJC and NPJC PMs appear white and blank unless they are
enabled on the Provisioning > Line tabs. For procedures, see Enable Pointer Justification Count
Performance Monitoring, page 8-13.
PPJC-Pdet
Positive Pointer Justification Count, STS 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, STS 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, 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.