STM-n performance parameters

Overview

This section describes the performance monitoring parameters on STM-1 and STM-4 regenerator sections and multiplex sections that are terminated on the system.

Monitored parameters

The following table lists the SDH STM-1 and STM-4 path performance parameters that Alcatel-Lucent 1850 TSS-5 monitors, including the default and ranges for the 15-minute and 1-day (24-hour) registers.

Table 5-70: SDH STM-1/STM-4/STM-16 performance parameters

Section type	Measured Provisionable Parameter	15-Min		1-Day
Section type	Measured Provisionable Parameter	Default	Range¹	Default	Range¹
Regenerator section	Near-end Errored Seconds (RS-N-ES)	180	0–900	1500	0–86400
	Near-end Severely Errored Seconds (RS-N-SES)	15	0–810	20	0–77760
	Near-end Background Block Errors (RS-N-BBE)	9000	0–7199100	48000	0–691113600
	Near-end Unavailable Seconds (RS-N-UAS)	15	0–900	20	0–86400
Multiplex section	Near-end Errored Seconds (MS-N-ES)	50	0–900	150	0–86400
	Near-end Severely Errored Seconds (MS-N-SES)	10	0–810	15	0–77760
	Near-end Background Block Error (MS-N-BBE)	STM-1: 228000	STM-1: 0–1727999100	STM-1: 432000	STM-1: 0–4294967295
		STM-4: 912000	STM-4: 0–691113600	STM-4: 1728000	STM-4: 0–4294967295
		STM-16: 3648000]	STM-16: 0–2764799100	STM-16: 6912000]	STM-16: 0–4294967295
	Near-end Unavailable Seconds (MS-N-UAS)	15	0–911	20	86400
	Far-end Errored Seconds (MS-F-ES)	50	0–900	50	86400
	Far-end Severely Errored Seconds (MS-F-SES)	10	0–810	10	0–77760
	Far-end Background Block Error (MS-F-BBE)	STM-1: 228000	STM-1: 0–1727999100	STM-1: 432000	STM-1: 0–4294967295
		STM-4: 912000	STM-4: 0–691113600	STM-4: 1728000	STM-4: 0–4294967295
		STM-16: 3648000]	STM-16: 0–2764799100	STM-16: 6912000]	STM-16: 0–4294967295
	Far-end Unavailable Seconds (MS-F-UAS)	15	0–911	15	0–86400

Notes:

When an individual performance monitoring parameter threshold is provisioned as zero (0), TCA reporting for the affected parameter is disabled.

STM-n section parameters

Alcatel-Lucent 1850 TSS-5 monitors the following near end SDH STM-n multiples and regenerator section parameters on incoming (from the SDH interface) STM-n signals.

Near-end errored seconds (RS-N-ES/MS-N-ES)

The Regenerator Section Near-end Errored Seconds (RS-N-ES) and Multiplex Section Near-end Errored Seconds (MS-N-ES) parameters for each SDH section are monitored. These parameters increment once for each second where one or more SDH errored blocks are detected at the associated regenerator or multiplex section layer.

Severely errored seconds (RS-N-SES/MS-N-SES)

The Regenerator Section Near-end Severely Errored Seconds (RS-N-SES) and Multiplex Section Near-end Severely Errored Seconds (MS-N-SES) parameters for each SDH section are monitored. The parameters increment once for each one-second interval in which the amount of block errors have exceeded the near-end SES threshold for the associated regenerator or multiplex section layer.

Background block errors (RS-N-BBE/MS-N-BBE)

The Regenerator Section Near-end Background Block Errors (RS-N-BBE) and Multiplex Section Near-end Background Block Errors (MS-N-BBE) parameter for each SDH section are monitored. The parameters increment once for each block error not occurring as part of a severely errored second on the associated regenerator or multiplex section layer.

Unavailable seconds (RS-N-UAS/MS-N-UAS)

The Regenerator Section Near-end Unavailable Seconds (RS-N-UAS) and Multiplex Section Near-end Unavailable Seconds (MS-N-UAS) parameters for each SDH section are monitored. The parameters determines the period of time during which the transmission route in the receive direction is not in an available state at the associated regenerator or multiplex layer. A period of unavailability begins at the onset of ten consecutive near-end severely errored seconds. These ten seconds are considered to be part of the unavailability period (UAP). A new period of availability begins at the onset of ten consecutive non-severely-errored seconds. These ten seconds are considered to be part of the availability period.

Far-end errored seconds (MS-F-ES)

The Multiplex Section Far-end Errored Seconds (MS-F-ES) parameter for each SDH section is monitored. The MS-F-ES parameter increments once for each second where one or more SDH errored blocks are detected at the far end of the multiplex section.

Severely errored seconds (MS-F-SES)

The Multiplex Section Far-end Severely Errored Seconds (MS-F-SES) parameter for each SDH section is monitored. The parameter increments once for each one-second interval in which the amount of block errors have exceeded the far-end SES threshold for the associated multiplex section.

Background block errors (MS-F-BBE)

The Multiplex Section Far-end Background Block Errors (MS-F-BBE) parameter for each SDH section is monitored. The parameter increments once for each block error detected at the far end, not occurring as part of a severely errored second on the associated multiplex section.

Unavailable seconds (MS-F-UAS)

The Multiplex Section Far-end Unavailable Seconds (MS-F-UAS) parameter for each SDH section is monitored. The parameter determines the period of time during which the transmission route in the transmit direction is not in an available state. A period of unavailability begins at the onset of ten consecutive severely errored seconds at the far end. These ten seconds are considered to be part of the unavailability period (UAP). A new period of availability begins at the onset of ten consecutive non-severely-errored seconds. These ten seconds are considered to be part of the availability period.