Cisco ONS 15454 SDH User Manual page 28

15.6.2 STM-1E Card Performance Monitoring Parameters
Table 15-29 Regenerator Section PM Parameters for the Near-End STM-1E Cards (continued)
Parameter
RS-UAS
RS-EB
Table 15-30 Multiplex Section PM Parameters for the Near-End
Parameter
MS-ES
MS-ESR
MS-SES
MS-SESR
MS-BBE
MS-BBER
MS-UAS
MS-EB
Cisco ONS 15454 SDH Reference Manual, R4.6
15-28
Definition
Regenerator Section Unavailable Second (RS-UAS) is a count of the
seconds when the regenerator section was unavailable. A section becomes
unavailable when ten consecutive seconds occur that qualify as RS-UASs,
and it continues to be unavailable until ten consecutive seconds occur that
do not qualify as RS-UASs.
Regenerator Section Errored Block (RS-EB) indicates that one or more
bits are in error within a block.
and Far-End STM-1E Cards
Definition
Multiplex Section Errored Second (MS-ES) is a one-second period with
one or more errored blocks or at least one defect.
Multiplex Section Errored Second Ratio (MS-ESR) is the ratio of errored
seconds to total seconds in available time during a fixed measurement
interval.
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, see ITU-T G.829
Section 5.1.3.
Multiplex Section Severely Errored Second ratio (MS-SESR) is the ratio
of SES to total seconds in available time during a fixed measurement
interval.
Multiplex Section Background Block Error (MS-BBE) is an errored block
not occurring as part of an SES.
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.
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.
Multiplex Section Errored Block (MS-EB) indicates that one or more bits
are in error within a block.
Chapter 15 Performance Monitoring
April 2008