Arista Power Supply Test

A sudden failure noticed on one of the power supply units in the target Arista switch can cause the switch to crash abruptly. To avoid this, you need to keep an eye on the state of each power supply unit. This can be achieved using the Arista Power Supply test.

For each power supply unit, this test monitors the current state, capacity and output power.

Target of the test : Arista Switch

Agent deploying the test : An external agent

Outputs of the test : One set of results for each power supply unit in the target Arista Switch

Configurable parameters for the test
Parameter Description

Test period

How often should the test be executed


The IP address of the Arista Switch that is being monitored.

SSH Port

Besides SNMP, this test also uses the Arista Switch CLI to pull metrics. To run the CLI commands, the test first needs to establish an SSH connection with the Arista Switch. To enable the test to establish this connection, specify the SSH Port here.

SSH Username, SSH Password, and Confirm Password

As stated earlier, this test also uses the Arista Switch CLI to pull metrics. To use the CLI, the test first needs to connect to the Arista Switch via SSH, and then run commands using CLI. For running the commands, this test requires the privileges of a valid SSH user with permission to run the CLI commands. Specify the user name and password of such a user against SSH UserName and SSH Password text boxes, and confirm the password by retyping it in the Confirm Password text box.


Specify the duration (in seconds) within which the SNMP query executed by this test should time out in this text box. The default is 10 seconds.

Measurements made by the test
Measurement Description Measurement Unit Interpretation


Indicates the current state of this power supply unit.


The values that this measure can report and their corresponding numeric values are as follows:

Measure Value

Numeric Value
Ok 0
AC Loss 1


By default, this measure reports one of the Measure Values listed in the table above to indicate the current state of each power supply unit. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

Total capacity

Indicates the total capacity of this power supply unit.



Output power

Indicates the output power of this power supply unit.