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. For information about the Cloud Analytics Engine, see Understanding Cloud Analytics Engine and 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.