Datasheet

15-10
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.4 Performance Monitoring Parameter Definitions
MS-PSD-R In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Duration-Ring (MS-PSD-R) is a count of the seconds that the protection
line was used to carry service. A count is only incremented if ring
switching is used.
MS-PSD-S In a four-fiber MS-SPRing, Multiplex Section Protection Switching
Duration-Span (MS-PSD-S) is a count of the seconds that the protection
line was used to carry service. A count is only incremented if span
switching is used.
MS-PSD-W For a working line in a two-fiber MS-SPRing, Multiplex Section Protection
Switching Duration-Working (MS-PSD-W) is a count of the number of
seconds that service was carried on the protection line. MS-PSD-W
increments on the failed working line and PSD increments on the active
protect line.
MS-SES Multiplex Section Severely Errored Second (MS-SES) is a one-second
period which contains 30 percent or more errored blocks or at least one
defect. SES is a subset of ES. For more information, refer to ITU-T G.829
Section 5.1.3.
MS-SESR Multiplex Section Severely Errored Second ratio (MS-SESR) is the ratio
of SES to total seconds in available time during a fixed measurement
interval.
MS-UAS Multiplex Section Unavailable Seconds (MS-UAS) is a count of the
seconds when the section was unavailable. A section becomes unavailable
when ten consecutive seconds occur that qualify as MS-SESs, and it
continues to be unavailable until ten consecutive seconds occur that do not
qualify as MS-SESs. When the condition is entered, MS-SESs decrement
and then count toward MS-UAS.
NIOS Non-Idle Ordered Sets (NIOS) is a count of received packets containing
non-idle ordered sets.
OPR Optical Power Received (OPR) is the measure of average optical power
received as a percentage of the nominal OPT.
OPR-AVG Average Receive Optical Power (dBm).
OPR-MAX Maximum Receive Optical Power (dBm).
OPR-MIN Minimum Receive Optical Power (dBm).
OPT Optical Power Transmitted (OPT) is the measure of average optical power
transmitted as a percentage of the nominal OPT.
OPT-AVG Average Transmit Optical Power (dBm).
OPT-MAX Maximum Transmit Optical Power (dBm).
OPT-MIN Minimum Transmit Optical Power (dBm).
RS-BBE Regenerator Section Background Block Error (RS-BBE) is an errored
block not occurring as part of an SES.
RS-BBER Regenerator Section Background Block Error Ratio (RS-BBER) is the
ratio of BBE to total blocks in available time during a fixed measurement
interval. The count of total blocks excludes all blocks during SESs.
Table 15-3 Performance Monitoring Parameters (continued)
Parameter Definition