What are thresholds?

A threshold is a value that should not be exceeded. These can be set in Iris according to the needs of your network.

 

Thresholds are set so that alarms are generated once an event has happened. Once an alarm is generated, it is important that someone is notified about the alarm. A threshold will trigger the alarm, but it is useful to set up a notification group before you set up a threshold as selecting a notification group is one of the steps when setting up a threshold.


Default thresholds

When Iris is installed, the following thresholds are already set up for you. 


Interface Errors        > 10%
Interface Capacity      > 80%
Router CPU              > 40%
Router Memory           > 70%
Router Temp             > 45C
ICMP Latency            > 900 Seconds
Disk IO Writes          > 1K
Disk IO Reads           > 500
Load                    > 20
Process Count           > 500


You can create additional thresholds, or you can edit the existing thresholds. Keep reading to see how you can do this.


Create a threshold

You are able to create thresholds for devices and elements. Let’s look at the steps for this.

 

Step 1

Step 2

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1. Click on Configuration on the navigation bar at the top of your screen.

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1. Select Monitoring and Set Thresholds from the drop-downs.

Step 3

 

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1. The Thresholds page will be displayed.

2. Click on the Add icon at the top of the screen.

Step 4


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1.  The Create a new Threshold pop-up will be displayed.

2. Complete all the fields.


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Step 5

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1. In the Criteria tab, you need to set the Critical Ceiling, Warn Ceiling and Clear Message thresholds for the breaches.

2. The thresholds are set to three different criteria: Clear, Warning and Critical. These have a corresponding colour:
Critical is red
Warning is orange
Clear is green

Step 6

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1. Complete the Matching Rules tab.

 

 

Exception

Select here to ensure no alerts are sent for a pattern match on mnemonic, element or view. This will override the global settings and is useful to stop alarms being sent for a threshold breach that will always breach. 

Mnemonic pattern

Match a mnemonic pattern. Use .* to match any. Keep blank to ignore.

Element pattern

Match the element. Use .* to match any. Keep blank to ignore.

View Code

Choose a view to make a threshold specific to that view and not a global threshold.

 

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Step 7

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1. Complete the Impact tab.

2. Select the Service from the drop-down.

3. You can override the default weight of the alarm by adjusting the Weight.

4. Click Save.

 

 

Edit a threshold

If you would like to edit any thresholds that have already been created, then this is how you would go about doing it.

 

Step 1

Step 2

 

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1. Click on Configuration on the navigation bar at the top of your screen.

 

 

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1. Select Monitoring and Set Thresholds from the drop-downs.

Step 3

 

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1. The Thresholds page will be displayed.

2. Select the threshold that you would like to edit by clicking in the Sel column next to the relevant threshold.

3. You can click the edit icon either at the top of the screen or in the Actions column.

Step 4

  

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1.  The Edit Thresholds pop-up will be displayed.

2. You can edit any of the fields.


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Step 5

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1. You might need to edit the Criteria tab.

2. The thresholds are set to three different criteria: Clear, Warning and Critical. These have a corresponding colour. Each of the criteria needs to be completed for the threshold to be complete.  

Step 6

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1. Edit the Matching Rules tab.

 

 

Exception

Select here to ensure no alerts are sent for a pattern match on mnemonic, element or view. This will override the global settings and is useful to stop alarms being sent for a threshold breach that will always breach. 

Mnemonic pattern

Match a mnemonic pattern. Use .* to match any. Keep blank to ignore.

Element pattern

Match the element. Use .* to match any. Keep blank to ignore.

View Code

Choose a view to make a threshold specific to that view and not a global threshold.

 

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