# Cisco ONS 15454 SDH User Manual

## Page 12

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**15-12**

**Cisco ONS 15454 SDH Reference Manual, R4.6**

**April 2008**

**Chapter 15 Performance Monitoring**

**15.4.3 DS3i-N-12 Card Performance Monitoring Parameters**

**Table 15-11 CP-Bit Framing DS-3 Path PM Parameters for the Near-End DS3i-N-12 Card**

**Parameter**

**Definition**

DS3 CVCP-P

Code Violation Path (CVCP-P) is a count of CP-bit parity errors occurring

in the accumulation period.

DS3 ESCP-P

Errored Second 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.

DS3 SESCP-P

Severely Errored Seconds Path (SESCP-P) is a count of seconds

containing more than 44 CP-bit parity errors, one or more SEF defects, or

one or more AIS defects.

DS3 SASCP-P

SEF/AIS Second (SASCP-P) is a count of one-second intervals containing

one or more near-end SEF/AIS defects.

DS3 UASCP-P

Unavailable Second Path (UASCP-P) is a count of one-second intervals

when the DS-3 path is unavailable. A DS-3 path becomes unavailable

when ten consecutive SESCP-Ps occur. The ten SESCP-Ps are included in

unavailable time. After the DS-3 path becomes unavailable, it becomes

available when ten consecutive seconds with no SESCP-Ps occur. The ten

seconds with no SESCP-Ps are excluded from unavailable time.

**Table 15-12 CP-Bit Path PM Parameters for the Far-End DS3i-N-12 Card**

**Parameter**

**Definition**

DS3 CVCP-P

Code Violation (CVCP-P) is a parameter that is counted when the three

far-end block error (FEBE) bits in a M-frame are not all collectively set to

1.

DS3 ESCP-P

Errored Second (ESCP-P) 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.

DS3 SASCP-P

SEF/AIS Second (SASCP-P) is a count of one-second intervals containing

one or more far-end SEF/AIS defects.

DS3 SESCP-P

Severely Errored Second (SESCP-P) is a count of one-second intervals

containing one or more 44 M-frames with the three FEBE bits not all

collectively set to 1 or one or more far-end SEF/AIS defects.

DS3 UASCP-P

Unavailable Second (UASCP-P) is a count of one-second intervals when

the DS-3 path becomes unavailable. A DS-3 path becomes unavailable

when ten consecutive far-end CP-bit SESs occur. The ten CP-bit SESs are

included in unavailable time. After the DS-3 path becomes unavailable, it

becomes available when ten consecutive seconds occur with no CP-bit

SESs. The ten seconds with no CP-bit SESs are excluded from unavailable

time.