The Overload Profile specifies a set of congestion thresholds, congestion durations, and overload controls. When a particular threshold is exceeded for a particular duration for any of the call processing related processes, the congestion level is raised to a higher level and the overload control is applied to help alleviate the congestion. The profile also specifies clear congestion thresholds and durations.
These values require that the overload conditions fall below their configured clear threshold values for a specific duration in order to return to the previous congestion level. These minimum clear durations prevent repeatedly switching in and out of congestion levels. You may assign an Overload Profile to the system (and apply it throughout the
). You may specify and manage the following congestion criteria through this facility:- CPU utilization
- Memory utilization
The following default Overload Profiles are automatically created for system congestion levels 1-3:
- defaultMC1
- defaultMC2
- defaultMC3
You must disable an Overload Profile in order to change its configuration. Then, when you enable the profile, you cause all the parameter values to be validated. Once validated, these values are applied to the (system) congestion level that references the profile. When you make a change in this manner, the system congestion level is cleared if the Overload Profile was being referenced. Standby modules also perform congestion processing but you cannot configure the module settings.
To View Overload Profile
On SBC main screen, go to Configuration > Profile Management > Category: System Profiles > Overload Profile.
The Overload Profile window is displayed.
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To Edit Overload Profile
To edit any of the Overload Profile in the list, click the radio button next to the specific Overload Profile name.
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The Edit Selected Overload Profile window is displayed below.
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Make the required changes and click Save at the right hand bottom of the panel to save the changes made.
To Create Overload Profile
To create a new Overload Profile, click New Overload Profile tab on the Overload Profile List panel.
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The Create New Overload Profile window is displayed.
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The following fields are displayed:
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| Parameter | Description |
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Name | Overload Profile name. Use the following default profiles to create custom profiles: defaultMC1defaultMC2defaultMC3
| State | Administrative state of the Overload profile. disabled – (default) Set to "disabled" to change parameter values. While disabled, congestion processing continues to use the previous profile values.enabled – Set to "enabled" to allow this profile to be referenced by a system congestion level whereby all parameter values are validated.
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To Copy Overload Profile
To copy any of the created Overload Profile and to make any minor changes, click the radio button next to the specific Overload Profile to highlight the row.
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Click Copy Overload Profile tab on the Overload Profile List panel.
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The Copy Selected Overload Profile window is displayed along with the field details which can be edited.
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The following fields are displayed:
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| 1 | Overload Profile parameters |
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Parameter | Description |
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Name
| Overload Profile name. Use the following default profiles to create custom profiles: defaultMC1defaultMC2defaultMC3
| state | Administrative state of the Overload profile. disabled – (default) Set to "disabled" to change parameter values. While disabled, congestion processing continues to use the previous profile values.enabled – Set to "enabled" to allow this profile to be referenced by a system congestion level whereby all parameter values are validated.
| Set Threshold | Use this parameter to specify CPU and memory Set Threshold for a monitored resource. cpu – CPU utilization percentage threshold at which the congestion level is set. (range: 0-100 / default = 85. A value of 0 disables CPU utilization as a congestion criterion.
| Clear Threshold | Use this parameter to specify CPU and memory Clear Threshold for a monitored resource. cpu – CPU utilization percentage threshold at which a congestion level is set or cleared. The clear threshold must be less than or equal to the set threshold. (range: 0-100 / default = 80).
| Set Duration | Use this parameter to specify CPU and memory Set Duration for a monitored resource. cpu – Length of time (in seconds) that CPU utilization percentage is above its set threshold before congestion level is set. (range: 0-65535 / default = 10). A value of zero sets the congestion level immediately.
| Clear Duration
| Use this parameter to specify CPU and memory Clear Duration for a monitored resource. cpu -Length of time (in seconds) that CPU utilization percentage must be below its clear threshold before congestion level clears. A value of zero clears the congestion level immediately. (range: 0-65535 / default = 10).
| Static Mode
| Use this object to define the call accept percentage rate. acceptPercentage – The rate (as percentage) to accept calls for the specified congestion level. (range: 0-100 / default = 100). A value of 0 rejects all calls. A value of 100 accepts all calls.
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Make the required changes to the required fields and click Save to save the changes. The copied Overload Profile is displayed at the bottom of the original Overload Profile in the Overload Profile List panel.
To Delete Overload Profile
To delete any of the created Overload Profile, click the radio button next to the specific Overload Profile which you want to delete.
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Click Delete at the end of the highlighted row. A delete confirmation message appears seeking your decision.
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Click Yes to remove the specific Overload Profile from the list.