Cisco Systems H.323 manual Overload, Resetting Measurements, Retrieving Counters

Chapter 4 Managing the Cisco HSI

Overload

Table 4-3 H.245 Counter Group (continued)

Counter Name	Measurement	Type	Comments
ASYMMETRIC_TOT	H245	Integer	Incremented for each asymmetric
			condition encountered. Collection
			intervals are provisionable (default is 12
			hours).
DTMF_ RELAY_ TOT	H245	Integer	Incremented for each call where DTMF
			relay is used. Collection intervals are
			provisionable (default is 12 hours).

Resetting Measurements

The clr-measMML command resets the measurement counters. This command resets an individual counter or all counters in a counter group. The following are valid counter groups:

•RAS

•Q.931

•H.245

For more information about the clr-meascommand, see Appendix A, “MML User Interface and Command Reference.”

Retrieving Counters

Use the rtrv-ctrMML command to retrieve measurement counters. This command displays the measurements for a counter group. Valid counter groups are RAS, Q.931, and H.245. For more information about the rtrv-ctrcommand, see Appendix A, “MML User Interface and Command Reference.”

Overload

The system continuously checks call totals and CPU utilization. Each of these values is compared to predefined limits. Three call total limits are available. Each limit has a hysteresis value and an alarm associated with it. When the call total reaches the limit, an alarm is raised. When the call total falls below the limit minus the hysteresis value, the alarm is cleared after the appropriate recovery action is taken.

Cisco HSI supports the following three levels of overload:

•Overload level 1

•Overload level 2

•Overload level 3

The following factors can trigger any one of the overload levels:

•CPU usage (the OVLDSAMPLERATE parameter defines the frequency of CPU sampling and threshold checking)

•Maximum calls allowed

	Cisco H.323 Signaling Interface User Guide
4-6	OL-4806-01 Rev. A14