Device & Port Latency Widget

The Device & Port Latency widget provides a graphical view of latency on devices. The heat map represents each device as a color-coded box. The color coding indicates the level of latency on a device. Cooler colors (for example, green) indicate lower latency, while hotter colors (for example, red) indicate higher latency.

The Device & Port Latency widget can show information only for devices that support Cloud Analytics Engine and that have the high-frequency traffic statistics feature enabled in Network Director.

To use the Device & Port Latency Heat Map widget, you must do the following first:

• Configure the Data Learning Engine (DLE) settings under Preferences > Monitoring > Data Learning Engine Settings. The DLE is a component of Cloud Analytics Engine. For information on configuring the DLE settings, see Specifying the Data Learning Engine (DLE) Settings.

• Enable high-frequency traffic statistics on the devices you want to monitor. For information, see Enabling High-Frequency Traffic Statistics Monitoring on Devices.

You can do the following with the heat map:

• Select the time period to view from the list in the title bar.

• 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 opens a different view of the heat map, with device boxes grouped according to your selection.

• Select a filter for which devices to show by clicking the Settings icon and then selecting an option from the Show list.

• 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 view detailed latency and congestion information about the device in a pop-up window.

• Click a device box to view detailed latency and congestion information about the device’s ports. In this view, each port is represented by a box that is color-coded to show its level of latency and congestion. Mouse over a port box to see more information about the port. To move back up the hierarchy, click the navigation arrows above the heat map.

• 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 latency.