ADC Release 3.1 user manual Been reset to zero by a user during the reporting period

1152700 • Issue 1 • February 2001 • Section 2 Operation and Maintenance

DLP-727

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Table 727-1. T3 TMUX Multi 1 Performance Monitoring Values, continued

MONITOR TYPE

Stuffing Cells

Congestion Lost Cells

AAL1 Sequence Errors

Lost Cells

Buffer Overflow

Buffer Underflow

Suspect

Supp

Hdr Errs

OAM Rcvd

In Cells

Out Cells

HEC Viols

OCDs

MAX 15 MIN.	COMMENTS
THRESH
	AAL1 LAYER
9900	Indicates a count of AIS cells inserted into the data stream for stuffing
	purposes in a 15-minute interval.
7391440	Indicates a count of cells discarded in a 15-minute interval.
3695745	A count of “Out of Sequence” transitions in a 15-minute interval.
3695745	A count of cells lost in a 15-minute interval.
900	Indicates a count of buffers that have overflowed in a 15-minute period.

900Indicates a count of buffers that have underflowed in a 15-minute period.

	ATM / TC LAYER
1	Suspect defines counts that are suspected to have errors but may have
	been reset to zero by a user during the reporting period.
3695745	Suppressed intervals flag indicates that there was no data to report for
	an interval (all counts are zero). This saves the user from having to
	look at a bunch of zeros and also reduces the size of the PM data files.
3695745	Sets a count of errors in the ATM header that the system can incur
	before notifying the system administrator.
3695745	A count of Operation, Administration, and Maintenance cells received
	in a 15-minute period. These cells are used for testing purposes such as
	loopback request codes.
3695745	A total count of all of the cells that have been received on an interface.
	This is for user information and not configurable.
3695745	A total count of all of the cells that have been transmitted out from an
	interface. This is for user information and is not configurable.
3695745	Sets a count of Header Error Checksum violations that the system can
	incur before declaring an alert.

900Sets a count of Out of Cell Delineation anomalies that the system can incur before declaring an alert.

Note: Max value should be the number of cells received in a 15-minute period (or for Congestion Lost Cells, multiply this by 2). Although 31 or 32 bits are allocated, only 4106.38 cells/sec are received on a T1. In a 15-minute period (900 seconds) only 3695744.68 cell are received. Therefore the max value for all AAL1 sequence errors for a 15-minute period should be 3695745 (22 bits), and for Congestion Lost cells 7391440 (23 bits).

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