Datasheet

15-8
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.4 Performance Monitoring Parameter Definitions
LOSS-L Line Loss of Signal Seconds (LOSS-L) is a count of one-second intervals
containing one or more LOS defects.
LP-BBE Low-Order Path Background Block Error (LP-BBE) is an errored block not
occurring as part of an SES.
LP-BBER Low-Order Path Background Block Error Ratio (LP-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.
LP-EB Low-Order Path Errored Block (LP-EB) indicates that one or more bits are
in error within a block.
LP-ES Low-Order Path Errored Second (LP-ES) is a one-second period with one
or more errored blocks or at least one defect.
LP-ESR Low-Order Path Errored Second Ratio (LP-ESR) is the ratio of errored
seconds to total seconds in available time during a fixed measurement
interval.
LP-SES Low-Order Path Severely Errored Seconds (LP-SES) is a one-second
period containing greater than or equal to 30 percent errored blocks or at
least one defect. SES is a subset of ES.
LP-SESR Low-Order Path Severely Errored Second Ratio (LP-SESR) is the ratio of
SES to total seconds in available time during a fixed measurement interval.
LP-UAS Low-Order Path Unavailable Seconds (LP-UAS) is a count of the seconds
when the VC path was unavailable. A low-order path becomes unavailable
when ten consecutive seconds occur that qualify as LP-SESs, and it
continues to be unavailable until ten consecutive seconds occur that do not
qualify as LP-SESs.
MS-BBE Multiplex Section Background Block Error (MS-BBE) is an errored block
not occurring as part of an SES.
MS-BBER Multiplex Section Background Block Error Ratio (MS-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.
MS-EB Multiplex Section Errored Block (MS-EB) indicates that one or more bits
are in error within a block.
MS-ES Multiplex Section Errored Second (MS-ES) is a one-second period with
one or more errored blocks or at least one defect.
MS-ESR Multiplex Section Errored Second Ratio (MS-ESR) is the ratio of errored
seconds to total seconds in available time during a fixed measurement
interval.
MS-NPJC-Pgen Multiplex Section Negative Pointer Justification Count, Path Generated
(MS-NPJC-Pgen) is a count of the negative pointer justifications generated
for a particular path.
MS-PPJC-Pgen Multiplex Section Positive Pointer Justification Count, Path Generated
(MS-PPJC-Pgen) is a count of the positive pointer justifications generated
for a particular path.
Table 15-3 Performance Monitoring Parameters (continued)
Parameter Definition