Left Pane—Link Status List
Each link in the topology can have an operational link status of Up, Down, Planned, or Unknown. Use the Link Status list to select the statuses you want to display in the topology map. This can be useful for a quick overview of network links. Only statuses that are present in the current topology are available for selection.
Links under planned maintenance are logically down, not operationally down. Only links that are operationally down have a link status of Down, and are displayed in the topology map with a letter F (failed) as shown in Figure 1.
Select or deselect statuses by selecting or clearing the corresponding check boxes. Only links that have a selected status are displayed in the topology map.
Click Check All to select all check boxes; click Clear All to clear all check boxes.