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Cisco ONS 15454 SDH Reference Manual, R4.6
April 2008
Chapter 15 Performance Monitoring
15.6.2 STM-1E Card Performance Monitoring Parameters
Figure 15-9 PM Read Points on the STM-1E Cards in E4 Mode
The PM parameters for the STM-1E cards are described in Table 15-29 on page 15-27 through
Table 15-33 on page 15-30.
110403
ONS 15454 SDH
STM-1E Card in E4 Mode
Pointer Processors
OCEAN
ASIC
Cross-Connect
Card STM-1E
Path
Level
in
E4 Mode
ES
ESR
SES
SESR
BBE
BBER
UAS
EB
PMs read on OCEAN ASIC
Table 15-29 Regenerator Section PM Parameters for the Near-End STM-1E Cards
Parameter Definition
RS-ES Regenerator Section Errored Second (RS-ES) is a one-second period with
one or more errored blocks or at least one defect.
RS-ESR Regenerator Section Errored Second Ratio (RS-ESR) is the ratio of
errored seconds to total seconds in available time during a fixed
measurement interval.
RS-SES Regenerator Section Severely Errored Second (RS-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.
RS-SESR Regenerator Section Severely Errored Second Ratio (RS-SESR) is the
ratio of SES to total seconds in available time during a fixed measurement
interval.
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.