Cisco Systems 15310-MA manual 11-9

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				11-9