Cisco ONS 15454 SDH Specifications download pdf (Page 331)

8-27

Cisco ONS 15454 SDH Installation and Operations Guide, R3.3

May 2002

Chapter 8 SDH Performance Monitoring

SDH Performance Monitoring for Electrical Cards

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.

UASCP-P

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

when the DS3 path is unavailable. A DS3 path becomes unavailable when

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

unavailable time. Once unavailable, the DS3 path becomes available

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

with no SESCP-Ps are excluded from unavailable time.

Table 8-15 CP-Bit Path PMs for the DS3i Cards, Far-End

Parameter Definition

CVCP-P

Code Violation (CVCP-PFE) 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.

ESCP-P

Errored Second (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.

SASCP-P

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

containing one or more far-end SEF/AIS defects.

SESCP-P

Severely Errored Second (SESCP-PFE) 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.

UASCP-P

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

when the DS3 path becomes unavailable. A DS3 path becomes

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

CP-bit SESs are included in unavailable time. Once unavailable, the DS3

path 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.

Table 8-16 VC3 Low-Order Path PMs for the DS3i Card, Near-End and Far-End

Parameter Definition

LP-EB

Low-Order Path Errored Block (LP-EB) indicates one or more bits are in

error within a block.

LP-BBE

Low-Order Path Background Block Error (LP-BBE) is an errored block

not occurring as part of a severely errored second (SES).

LP-ES

Low-Order Path Errored Second (LP-ES) is a one second period with one

or more errored blocks or at least one defect.

LP-SES

Low-Order Path Severely Errored Seconds (LP-SES) is a one-second

period containing >

30% errored blocks or at least one defect. SES is a

subset of ES.

Table 8-14 CP-Bit Framing DS3 Path PMs for the DS3i Card, Near-End (continued)

Parameter Definition

1 2 ... 326 327 328 329 330 331 332 333 334 335 336 ... 503 504

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