Chapter 12 Performance Monitoring

12.4 Performance-Monitoring Parameter Definitions

Table 12-2

Performance Monitoring Parameters (continued)

 

 

 

Parameter

 

Definition

 

 

 

OPR

 

Optical Power Received (OPR) is represented by the percentage of the normal optical

 

 

receive power of the card port. The high optical power received (OPR-HIGH)

 

 

threshold is the percentage of the calibrated receive optical power when a high

 

 

receive power TCA occurs. The low optical power received (OPR-LOW) threshold

 

 

is the percentage of the calibrated receive optical power when a low receive power

 

 

TCA occurs.

 

 

 

PPJC-PDET

 

Pointer Justification STS Detected (PPJC-PDET).

 

 

 

PPJC-PDET-P

 

Positive Pointer Justification Count, STS Path Detected (PPJC-Pdet-P) is a count of

 

 

the positive pointer justifications detected on a particular path in an incoming

 

 

SONET signal.

 

 

 

PPJC-PGEN-P

 

Positive Pointer Justification Count, STS Path Generated (PPJC-Pgen-P) is a count

 

 

of the positive pointer justifications generated for a particular path to reconcile the

 

 

frequency of the SPE with the local clock.

 

 

 

PSC (1+1)

 

In a 1+1 protection scheme for a working port, Protection Switching Count (PSC) is

 

 

a count of the number of times service switches from a working port to a protection

 

 

port plus the number of times service switches back to the working port.

 

 

For a protection port, PSC is a count of the number of times service switches to a

 

 

working port from a protection port plus the number of times service switches back

 

 

to the protection port. The PSC PM is only applicable if revertive line-level

 

 

protection switching is used.

 

 

 

PSC (BLSR)

 

For a protect line in a two-fiber ring, Protection Switching Count (PSC) refers to the

 

 

number of times a protection switch has occurred either to a particular span’s line

 

 

protection or away from a particular span's line protection. Therefore, if a protection

 

 

switch occurs on a two-fiber BLSR, the PSC of the protection span to which the

 

 

traffic is switched will increment, and when the switched traffic returns to its original

 

 

working span from the protect span, the PSC of the protect span will increment again.

 

 

 

PSC-R

 

In a four-fiber bidirectional line switched ring (BLSR), Protection Switching

 

 

Count-Ring (PSC-R) 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 a

 

 

working line. A count is only incremented if ring switching is used.

 

 

 

PSC-S

 

In a four-fiber BLSR, Protection Switching Count-Span (PSC-S) 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. A count is only incremented if

 

 

span switching is used.

 

 

 

PSC-W

 

For a working line in a two-fiber BLSR, Protection Switching Count-Working

 

 

(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.

 

 

PSC-W increments on the failed working line and PSC increments on the active

 

 

protect line.

 

 

For a working line in a four-fiber BLSR, 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. PSC-W increments on the failed line and PSC-R

 

 

or PSC-S increments on the active protect line.

 

 

 

Cisco ONS 15600 Reference Manual, R7.2

12-7

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Cisco Systems ONS 15600 manual 12-7
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ONS 15600 specifications

Cisco Systems ONS 15600 is a highly versatile optical networking platform designed to meet the demands of modern telecommunications and data services. This multiservice edge platform supports various transmission mediums and offers a wide array of features that enable efficient data transport. Ideal for service providers and large enterprises, the ONS 15600 is engineered to provide scalable and reliable optical transport solutions.

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