STS-N performance parameters

Overview

This section describes the performance monitoring parameters on terminated (STS-1) and intermediate STS-N (STS-1, STS-3c, STS-12c) paths that are cross-connected through the system. Intermediate SONET STS-N path performance monitoring applies to STS-N paths cross-connected to another SONET interface. Terminated SONET STS-N path performance monitoring applies to STS-N paths cross-connected to a non-SONET interface (for example, DS3).

Monitored parameters

The following table lists the SONET STS-N path performance parameters that Alcatel-Lucent 1665 DMXtend monitors, including the default and ranges for the 15-minute and 1-day (24-hour) registers.

Table 5-16: SONET STS-N performance parameters

Facility	Measured Provisionable Parameter	15-Min		1-Day
Facility	Measured Provisionable Parameter	Default	Range¹	Default	Range¹
STS-192c Path	Coding Violations (CV-P), CV-PFE	20	0–16383	200	0–1048575
STS-48c Path	Coding Violations (CV-P), CV-PFE	300	0–16383	3000	0–1048575
STS-12c Path	Coding Violations (CV-P), CV-PFE	75	0–16383	750	0–1048575
STS-3c Path	Coding Violations (CV-P), CV-PFE	25	0–16383	250	0–1048575
STS-1 Path	Coding Violations (CV-P), CV-PFE	15	0–900	150	0–65535
STS-192c Path	Errored Seconds (ES-P), ES-PFE	16	0–16383	160	0–1048575
STS-48c Path	Errored Seconds (ES-P), ES-PFE	240	0–16383	2400	0–1048575
STS-12c Path	Errored Seconds (ES-P), ES-PFE	60	0–16383	600	0–1048575
STS-3c Path	Errored Seconds (ES-P), ES-PFE	20	0–16383	200	0–1048575
STS-1 Path	Errored Seconds (ES-P), ES-PFE	12	0–900	100	0–65535
STS-N Path	FC-P, FC-PFE	10	1–72	10	1–4095
	Severely Errored Seconds (SES-P), SES-PFE	3	0–900	7	0–65535
	Unavailable Seconds (UAS-P), UAS-PFE	10	0–900	10	0–65535

Notes:

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

STS-N path parameters

Alcatel-Lucent 1665 DMXtend monitors the following near end SONET STS path parameters on incoming (from the SONET interface) STS-N signals.

Coding violations (CV-P)

The Near-End STS Path Coding Violations (CVP) parameter for each SONET path is monitored. The CVP parameter increments once for each BIP error detected at the STS path layer (the B3 byte of the incoming SONET STS Path overhead). Up to 8 BIP errors can be detected per frame.

The Far-End STS Path Coding Violations (CVP) parameter for each SONET path is monitored. The Far-End CVP parameter increments as reported by the REI-P indication of the STS path overhead.

Errored seconds (ES-P)

The Near-End STS Path Errored Seconds (ESP) parameter for each SONET path is monitored. The ESP parameter increments once for each second where one or more STS Path layer BIP errors are detected or an AIS-P, LOP-P, or UNEQ-P defect is detected.

The Far-End STS Path Errored Seconds (ESP) parameter for each SONET path is monitored. The Far-End ESP parameter increments once for each second where one or more Far-End STS Path layer BIP errors are detected as reported by the REI-P indication of the line overhead or an RDI-P defect is present, or an ERDI-P (if supported) defect is detected.

Alcatel-Lucent 1665 DMXtend detects 1-bit RDI, but treats it as though it is the high order bit of a 3-bit ERDI in that it includes UNEQ.

Severely errored seconds (SES-P)

The Near-End STS Path Severely Errored Seconds (SESP) parameter for each SONET path is monitored. The SESP parameter increments once for each second where K or more STS Path layer BIP errors are detected or an AIS-P, LOP-P, or UNEQ-P defect is detected. The integer value for K is set by standards and is selectable (values are shown in Table 8). Alcatel-Lucent 1665 DMXtend detects 1-bit RDI, but treats it as though it is the high order bit of a 3-bit ERDI in that it includes UNEQ.

The Far-End STS Path Severely Errored Seconds (SESP) parameter for each SONET path is monitored. The Far-End SESP parameter increments once for each second where K or more STS Path layer BIP errors are detected as reported by the REI-P indication of the path overhead or a one bit RDI-P defect was present or (if ERDI-P is supported), an ERDI-P defect is detected. The integer value for K is set by standards and selectable (values are shown in Table 8).

Alcatel-Lucent 1665 DMXtend detects 1-bit RDI, but treats it as though it is the high order bit of a 3-bit ERDI in that it includes UNEQ.

Unavailable seconds (UAS-P)

The Near-End STS Path Unavailable Seconds (UASP) parameter for each SONET path is monitored. The UASP parameter increments once for each second where SESP is detected after ten consecutive seconds with SESP detected. UASP continues to increment once for each second until ten consecutive seconds without SESP are detected.

The Far-End STS Path Unavailable Seconds (UASP) parameter for each SONET path is monitored. The Far-End UASP parameter increments once for each second where Far-End SESP is detected after ten consecutive seconds with Far-End SESP detected. Far-End UASP continues to increment once for each second until ten consecutive seconds without Far-End SESP are detected.

Failure counts path (FC-P)

The Far-End STS Path Failure Counts (FC-P) parameter for each SONET path is monitored. The Far-End FC-P parameter increments once for the beginning of each RFI-P event (RFI-P detected and cleared). A failure that begins in one period and ends in another period, is counted in the period in which it begins.

STS-N path PM report

Use the Performance → Reports → STSn Path command to obtain the STS-N Path PM Report. For more information about the STS-N path parameters and the Performance → Reports → STSn Path command, see the WaveStar^® CIT online help.