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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Chapter 11 Performance Monitoring
Performance Monitoring Parameter Definitions
IOS Idle Ordered Sets (IOS) is a count of received packets containing idle
ordered sets.
IPC A count of received packets that contain errored data code groups that have
start and end delimiters.
LBC-MIN LBC-MIN is the minimum percentage of Laser Bias Current.
LBC-AVG Laser Bias Current—Average (LBC-AVG) is the average percentage of
laser bias current.
LBC-MAX Laser Bias Current—Maximum (LBC-MAX) is the maximum percentage
of laser bias current.
LBC-MIN Laser Bias Current—Minimum (LBC-MIN) is the minimum percentage of
laser bias current.
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 M ultiplex 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.
Table 11-2 Performance Monitoring Parameters (continued)
Parameter Definition