Get Load Balancer usage metrics using the REST API

Collect the number of bytes processed by a Standard Load Balancer for an interval of time using the Azure REST API.

Complete reference documentation and additional samples for the REST API are available in the Azure Monitor REST reference.

Build the request

Use the following GET request to collect the ByteCount metric from a Standard Load Balancer.


Request headers

The following headers are required:

Request header Description
Content-Type: Required. Set to application/json.
Authorization: Required. Set to a valid Bearer access token.

URI parameters

Name Description
subscriptionId The subscription ID that identifies an Azure subscription. If you have multiple subscriptions, see Working with multiple subscriptions.
resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API, CLI, or the portal.
loadBalancerName The name of the Azure Load Balancer.
metric names Comma-separated list of valid Load Balancer metrics.
api-version The API version to use for the request.

This document covers api-version 2018-01-01, included in the above URL.
timespan The timespan of the query. It's a string with the following format startDateTime_ISO/endDateTime_ISO. This optional parameter is set to return a day's worth of data in the example.

Request body

No request body is needed for this operation.

Handle the response

Status code 200 is returned when the list of metric values is returned successfully. A full list of error codes is available in the reference documentation.

Example response

    "cost": 0,
    "timespan": "2018-06-05T03:00:00Z/2018-06-07T03:00:00Z",
    "interval": "PT1M",
    "value": [
            "id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/loadBalancers/{loadBalancerName}/providers/Microsoft.Insights/metrics/ByteCount",
            "type": "Microsoft.Insights/metrics",
            "name": {
                "value": "ByteCount",
                "localizedValue": "Byte Count"
            "unit": "Count",
            "timeseries": [
                    "metadatavalues": [],
                    "data": [
                            "timeStamp": "2018-06-06T17:24:00Z",
                            "total": 1067921034.0
                            "timeStamp": "2018-06-06T17:25:00Z",
                            "total": 0.0
                            "timeStamp": "2018-06-06T17:26:00Z",
                            "total": 3781344.0
    "namespace": "Microsoft.Network/loadBalancers",
    "resourceregion": "eastus"