Smarts IP: How does Smarts IP calculate TemperatureSensor OutOfRange notifications for Juniper Routers?; How do I configure the "TemperatureHighThreshold" value?

Products

• VMware Smart Assurance

Issue/Introduction

Symptoms:


How does Smarts IP calculate TemperatureSensor OutOfRange notifications for Juniper Routers?
How do I configure the TemperatureHighThreshold value?


TemperatureSensor OutOfRange notifications are generated for Juniper Routers in Smarts IP

Environment

VMware Smart Assurance - SMARTS

Resolution

Smarts IP uses the results of the following calculation to generate TemperatureSensor OutOfRange notifications for Juniper Routers:

HighThreshold = (1 - RelativeTemperatureThreshold / 100) * juniperTemperatureThreshold;

Smarts IP will generate an OutOfRange notification if CurrentValue > HighThreshold;

Calculation terms
The above calculation terms are defined as follows:

HighThreshold = The current value of the TemperatureSensor's upper threshold in degrees C, as reported by the instrumentation.

RelativeTemperatureThreshold = How close the HighThreshold value is to the value that triggers an emergency shutdown,expressed as a percentage of the emergency shutdown value. If the shutdown temperature is 50 degrees C and the ThresholdFactor is 10%,the HighThreshold is set to 45 degrees.

juniperTemperatureThreshold = The high temperature threshold. For all Juniper routers, the juniperTemperatureThreshold value is hard-coded to 40 degrees C.

Calculation example
If TemperatureHighThreshold is set to 45 and the ThresholdFactor (RelativeTemperatureThreshold) is set to 10%, the HighThreshold value would be set to 40.5 degrees.

Configuring the TemperatureHighThreshold value
The TemperatureHighThreshold value is configurable through Smarts IP Polling and Threshold settings  as follows:

1. Select the Threshold tab in the Polling and Threshold settings dialog.
2. Right-click under System Resource Groups, select to create a new group, and name the new group.
3. Click the new group and add the required settings such as Connectivity, Environment, Processor and Memory settings.
4. Click the Priority tab and give the high priority setting to the new group.
5. Click the Matching Criteria tab and specify any maching criteria that matches to all the Juniper devices.
6. Under your new group, select Environment Settings and change the high threshold value of the TemperatureSensor.
7. Select Apply and run the reconfigure command to deploy the changes in the live Smarts IP environment.