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Device & Port Utilization Widget

The Device & Port Utilization Heatmap widget provides a graphical view of device port utilization percentage. The heat map represents each device as a color-coded box. The color coding indicates the overall level of port utilization on a device. Cooler colors (for example, green) indicate lower port utilization , while hotter colors (for example, red or dark red) indicate higher port utilization.

You can view the utilization level for each port on a device by clicking the box representing the device. A heat map is displayed that represents each port on the device as a color-coded box, with the color coding representing the level of port utilization.

Using the Global Controls

Use the controls in the upper right corner to make global changes to how the device and port heat maps are displayed. You can:

  • Select the time period over which device utilization and port utilization are shown.

  • Display information about the devices or the ports in either graphical heat map or tabular format by clicking either (graphical) or (tabular).

  • Select how to organize the heat map by clicking the Settings icon (), and then selecting an option from the Group Devices By list. Each option creates a different view of the heat map, with device boxes grouped according to your selection.

Interacting with the Heat Maps

You can interact with the device and port heat maps as follows:

  • If you have grouped the devices by location, you can drill down into the heat map’s hierarchy by clicking one of the device container names (for example, a site or building). To move back up the hierarchy, click the navigation arrows above the heat map.

  • Mouse over a device box to see detailed device-level port utilization information in a pop-up window. In the pop-up window, click the View top 5 ports link to view the top five ports that use the most bandwidth on the device.

  • Click on a device box to display a heat map of the ports on the device. In this port-level heat map, each port is represented by a box that is color-coded to show its level of utilization. To return to the device view, click the navigation arrows above the heat map.

  • Slide the bandwidth utilization control to filter and view devices based on utilization.

  • Mouse over a port box to display information about the port—such as port name, status, speed, and percent utilization—in a pop-up window.

    • For ports on devices that are configured for traffic analysis, you can view the traffic analysis data by clicking Analyze Traffic on the Port.

  • Slide the circular controls along the bar under the heat map to Filter the devices or ports shown in the heat map by degree of port utilization.

Viewing Traffic on a Device

The Traffic on Device window displays the details of traffic that flows through the selected port on a device, such as the applications that are running on the client system, IP address of the client system and the destination, protocol used by the application, data usage, and the data usage percentage. You can choose to view the real-time traffic analysis data on an interface or to view data over a specified period of time.

The Traffic on Device window displays traffic details in two modes—top applications and top conversations. Network Director displays this data in graphical and tabular format, for each mode.

To view details of traffic that passes through a port on a device:

  1. Log in to Network Director.

    The Dashboard View is selected by default. All the devices that are managed by Network Director in a particular network are represented as cells in the Device & Port utilization widget.

  2. Click a device cell to view the ports associated with that device.

    All the ports in the selected device are represented as cells. Mouse over the cells to open up a pop-up displaying the port information.

  3. Mouse over a cell (port) to view the port information in a pop-up.

  4. Click Analyse Traffic on this Port in the pop-up.

    The Traffic on Device :<port name> page is displayed.

  5. Select Top Applications (default) or Top Conversations to view traffic details sorted based on applications or conversations respectively.

  6. Select real-time or a time period for which you want to view the traffic analysis data.

    Network Director displays the traffic details on the selected port for the time period you specified. If you chose to view the real-time data, the data in the graph refreshes after each sampling interval.

    The graphical view displays traffic from each application or conversation plotted against time (x-axis) and data usage (y-axis). In the Top Applications mode, Network Director displays the names of well-known applications such as http, ftp, and ssh.

    Table 1 describes the fields that are displayed in the traffic details table.

  7. If you are viewing traffic data in the Top Applications mode and if you know the application that uses a particular protocol port, then select that corresponding port number from the list and click Associate Application with Port.

  8. Enter the name of the application and the protocol that the application uses. Click Add.

    The name you entered replaces the name of the application in the list.

Table 1: Traffic on Device—Port Traffic Details Table Fields





Top Applications

Name of the application.


Top Applications

Protocol that ths application uses.

Ingress Bytes

Top ApplicationsTop Conversations

Number of bytes that enter the device through the ingress interface for the given application or conversation for the selected duration.

Egress Bytes

Top ApplicationsTop Conversations

Number of bytes that leave the device through the egress interface for the given application or conversation for the selected duration.

Total Bytes

Top ApplicationsTop Conversations

Total number of bytes that traversed through the port for the given application or conversation for the selected duration.

Percentage of Total Traffic

Top ApplicationsTop Conversations

Percentage of traffic that the application or conversation uses with respect to the total traffic that traverses the port for the selected duration.