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15.4 Performance Monitoring Parameter Definitions
Table 15-3
Parameter
CVP-P
CV-S
CV-V
DCG
ESA-P
ESB-P
ESCP-P
ESCP-PFE
ES-L
ES-NP
ES-P
ES-PFE
ES-PM
ESP-P
ESR-PM
Cisco ONS 15454 Reference Manual, R8.5
15-6
Performance Monitoring Parameters (continued)
Definition
Code Violation Path (CVP-P) is a code violation parameter for M23
applications. CVP-P is a count of P-bit parity errors occurring in the
accumulation period.
Section Coding Violation (CV-S) is a count of bit interleaved parity (BIP)
errors detected at the section layer (that is, using the B1 byte in the
incoming SONET signal). Up to eight section BIP errors can be detected
per STS-N frame; each error increments the current CV-S second register.
Code Violation VT Layer (CV-V) is a count of the BIP errors detected at
the VT path layer. Up to two BIP errors can be detected per VT
superframe, with each error incrementing the current CV-V second
register.
Data Code Groups (DCG) is a count of received data code groups that do
not contain ordered sets.
Path Errored Seconds-A (ESA-P) is the count of 1-second intervals with
exactly one CRC-6 error and no AIS or severely errored framing (SEF)
defects.
Path Errored Seconds-B (Rx ESB-P) is a count of 1-second intervals with
between 2 and 319 CRC-6 errors and no AIS or SEF.
Errored Seconds CP-bit Path (ESCP-P) is a count of seconds containing
one or more CP-bit parity errors, one or more SEF defects, or one or more
AIS defects. ESCP-P is defined for the C-bit parity application.
Far-End Errored Seconds CP-bit Path (ESCP-PFE) is a count of
one-second intervals containing one or more M-frames with the three
FEBE bits not all collectively set to 1 or one or more far-end SEF/AIS
defects.
Line Errored Seconds (ES-L) is a count of the seconds containing one or
more anomalies (BPV + EXZ) and/or defects (that is, loss of signal) on
the line.
Near-End STS Path Errored Seconds (ES-P) is a count of the seconds
when at least one STS path BIP error was detected. An AIS Path (AIS-P)
defect (or a lower-layer, traffic-related, near-end defect) or a Loss of
Pointer Path (LOP-P) defect can also cause an ES-P.
Far-End STS Path Errored Seconds (ES-PFE) is a count of the seconds
when at least one STS path BIP error was detected. An AIS-P defect (or a
lower-layer, traffic-related, far-end defect) or an LOP-P defect can also
cause an STS ES-PFE.
Path Monitoring Errored Seconds (ES-PM) indicates the errored seconds
recorded in the OTN path during the PM time interval.
Errored Seconds Path (ESP-P) is a count of seconds containing one or
more P-bit parity errors, one or more SEF defects, or one or more AIS
defects.
Path Monitoring Errored Seconds Ratio (ESR-PM) indicates the errored
seconds ratio recorded in the OTN path during the PM time interval.
Chapter 15
Performance Monitoring
78-18106-01
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