Cisco ONS 15454 SDH Specifications Page 328

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8-24
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 8 SDH Performance Monitoring
SDH Performance Monitoring for Electrical Cards
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.
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-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-BBER
Low-Order Path Background Block Error Ratio (LP-BBER) is the ratio of
Background Block Errors (BBE) to total blocks in available time during a
fixed measurement interval. The count of total blocks excludes all blocks
during SESs.
Table 8-11 VC4 High-Order Path PMs for the E3 Card, Near-End and Far-End
Parameter Definition
HP-EB
High-Order Path Errored Block (HP-EB) indicates one or more bits are in
error within a block.
HP-BBE
High-Order Path Background Block Error (HP-BBE) is an errored block
not occurring as part of a severely errored second (SES).
HP-ES
High-Order Path Errored Second (HP-ES) is a one second period with one
or more errored blocks or at least one defect.
HP-SES
High-Order Path Severely Errored Seconds (HP-SES) is a one-second
period containing >
30% errored blocks or at least one defect. SES is a
subset of ES.
HP-UAS
High-Order Path Unavailable Seconds (HP-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 HP-SESs,
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as HP-SESs.
HP-ESR
High-Order Path Errored Second Ratio (HP-ESR) is the ratio of errored
seconds to total seconds in available time during a fixed measurement
interval.
HP-SESR
High-Order Path Severely Errored Second Ratio (HP-SESR) is the ratio
of SES to total seconds in available time during a fixed measurement
interval.
HP-BBER
High-Order Path Background Block Error Ratio (HP-BBER) is the ratio
of Background Block Errors (BBE) to total blocks in available time
during a fixed measurement interval. The count of total blocks excludes
all blocks during SESs.
Table 8-10 VC3 Low-Order Path PMs for the E3 Card, Near-End and Far-End (continued)
Parameter Definition
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