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Using Network Monitor to View ETL Files

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Microsoft Network Monitor 3.4 (archive) enables users to parse, filter, and view an ETL file (using Windows Vista or later).

Correlated ETL files group the relevant events together. The illlustration below shows a correlated file opened in Network Monitor, with conversation enabled.

Screenshot that shows the Network Monitor, with correlated events highlighted in the left window and UTEvent highlighted from the drop-down.

Correlated events are grouped by activity in the left pane. You can select an event in the Frame Summary pane, then right-click to select the conversation at the network event level. This will display a related activity in the left pane.

Selecting a particular activity from the left pane and expanding it will show the list of providers for the correlated events.

Screenshot that shows the Network Monitor with an activity selected from the left pane and events corresponding to that event in the right pane.

When you select a specific provider in the left pane, a list of events specific to that provider and activity will be displayed in the Frame Summary pane.

Screenshot that shows a specific provider selected in the left pane, and a list of events specific to the provider highlighted in the top-right pane.

Filters can be applied in Network Monitor to make it easier to view and find the right events or packet. For example, you can apply a filter to selected error events (for example, UTEvent.Header.Descriptor.Level == 2) to display them in a certain color.

Screenshot that shows the 'Edit Color Filter' dialog.

Filters can also be applied to mark different providers in different colors so that the results are easier to view.

Screenshot that shows an example of different providers marked in different colors.

To apply a filter, click ColorFilters on the Filters menu.

The following table shows some examples of useful filters.

Filter Description
UTEvent.Header.Descriptor.Level == 2 Filters only error events.
UTEvent.Header.Descriptor.Level == 3 Filters only warning events.
UTEvent.Header.Descriptor.Id == 2001 Filters only events with event ID 2001.
WLAN_MicrosoftWindowsWLANAutoConfig Filters only events from WLAN service.
N802_MicrosoftWindowsNWiFi Filters only events from the Native Wifi driver.
WLAN_MicrosoftWindowsWLANAutoConfig AND UTEvent.Header.Descriptor.Id == 2001 Filters only events with event ID 2001 emitted from WLAN service.