Chapter 11 Performance Monitoring

 

 

 

 

Performance Monitoring Parameter Definitions

 

 

 

Table 11-2

Performance Monitoring Parameters (continued)

 

 

 

 

 

 

 

Parameter

 

Definition

 

 

 

 

 

 

 

MS-PSC-W

 

For a working line in a two-fiber MS-SPRing, Multiplex Section Protection

 

 

 

 

Switching Count-Working (MS-PSC-W) is a count of the number of times

 

 

 

 

traffic switches away from the working capacity in the failed line and back

 

 

 

 

to the working capacity after the failure is cleared. MS-PSC-W increments

 

 

 

 

on the failed working line and MS-PSC increments on the active protect

 

 

 

 

line.

 

 

 

 

For a working line in a four-fiber MS-SPRing, MS-PSC-W is a count of the

 

 

 

 

number of times service switches from a working line to a protection line

 

 

 

 

plus the number of times it switches back to the working line. MS-PSC-W

 

 

 

 

increments on the failed line and MS-PSC-R or MS-PSC-S increments on

 

 

 

 

the active protect line.

 

 

 

 

 

 

 

MS-PSD

 

Multiplex Section Protection Switching Duration (MS-PSD) applies to the

 

 

 

 

length of time, in seconds, that service is carried on the protection line. For

 

 

 

 

a working line, MS-PSD is a count of the number of seconds that service

 

 

 

 

was carried on the protection line.

 

 

 

 

For the protection line, MS-PSD is a count of the seconds that the line was

 

 

 

 

used to carry service. The MS-PSD PM is only applicable if revertive

 

 

 

 

line-level protection switching is used. MS-PSD increments on the active

 

 

 

 

protect line and MS-PSD-W increments on the failed working line.

 

 

 

 

 

 

 

MS-PSD-R

 

In a four-fiber MS-SPRing, Multiplex Section Protection Switching

 

 

 

 

Duration-Ring (MS-PSD-R) is a count of the seconds that the protection

 

 

 

 

line was used to carry service. A count is only incremented if ring

 

 

 

 

switching is used.

 

 

 

 

 

 

 

MS-PSD-S

 

In a four-fiber MS-SPRing, Multiplex Section Protection Switching

 

 

 

 

Duration-Span (MS-PSD-S) is a count of the seconds that the protection

 

 

 

 

line was used to carry service. A count is only incremented if span

 

 

 

 

switching is used.

 

 

 

 

 

 

 

MS-PSD-W

 

For a working line in a two-fiber MS-SPRing, Multiplex Section Protection

 

 

 

 

Switching Duration-Working (MS-PSD-W) is a count of the number of

 

 

 

 

seconds that service was carried on the protection line. MS-PSD-W

 

 

 

 

increments on the failed working line and PSD increments on the active

 

 

 

 

protect line.

 

 

 

 

 

 

 

MS-SES

 

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, refer to ITU-T G.829

 

 

 

 

Section 5.1.3.

 

 

 

 

 

 

 

MS-SESR

 

Multiplex Section Severely Errored Second ratio (MS-SESR) is the ratio

 

 

 

 

of SES to total seconds in available time during a fixed measurement

 

 

 

 

interval.

 

 

 

 

 

 

 

MS-UAS

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

78-19417-01

 

 

 

 

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Cisco Systems 15310-MA manual 11-9

15310-MA specifications

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