Figure 8-9 Viewing Pointer Justification Count Parameters - Cisco ONS 15327 User Documentation

Chapter 8 Performance Monitoring
Pointer Justification Count Reference
Figure 8-9 Viewing pointer justification count parameters
Provisioning tab Card view
Pointer
justification
counts
There are positive (PPJC) and negative (NPJC) pointer justification count parameters. PPJC is a count
of path-detected (PPJC-Pdet) or path-generated (PPJC-Pgen) positive pointer justifications. NPJC is a
count of path-detected (NPJC-Pdet) or path-generated (NPJC-Pgen) negative pointer justifications
depending on the specific PM name.
A consistent pointer justification count indicates clock synchronization problems between nodes. A
difference between the counts means the node transmitting the original pointer justification has timing
variations with the node detecting and transmitting this count. Positive pointer adjustments occur when
the frame rate of the SPE is too slow in relation to the rate of the STS 1.
For pointer justification count definitions, depending on the cards in use, see the "OC-3 Card
Performance Monitoring Parameters" section on page 8-24, "OC-12 Card Performance Monitoring
Parameters" section on page 8-28, or the "OC-48 Card Performance Monitoring Parameters" section on
page 8-33.
On CTC, the count fields for PPJC and NPJC PMs appear white and blank unless they are enabled on
the Provisioning > Line tabs. Figure 8-10 shows the PJStsMon# menu on the Provisioning screen.
Pointer justification is only enabled for one STS at a time.
Cisco ONS 15327 User Documentation, R3.3
8-14
June 2002