About the Link Tab

Tasks You Can Perform

You can perform the following tasks on the Link tab:

• Add a Link. See Add a Link.

• Edit Link Properties. See Edit Link Parameters.

• Delete a Link. See Delete a Link.

• From the View list, you can view:

  • Link Events—View events associated with the link based on the selected time range.

    On the Events window, click the Start Date to End Date field to select the start/end date and time on the calendar for which you want to view the link events. You can also quickly view the link events that occurred Today, Past 1h (one hour), Past 1d (one day), and Past Wk (week) by selecting the respective buttons at the bottom of the calendar.

    Note:

    You can also enter the date and time manually.

    The time series bar chart shows the hourly aggregated Status Up or Down counts. The Up or Down event is sent by the server to the client based on the date-time range configured.

    The detailed events are displayed in the table at the bottom on the page. For example, you can view the link Action (add, remove, update, state change, or query) and the link Status (up, down, planned, or unknown).

    You can also export all the events data to a CSV file by clicking Download.

    Note:

    You can also:

    • Show/Hide Columns—Choose to show or hide a specific column in the table.

      Hover over the More Options (vertical ellipsis) > Show/Hide Columns and select the Column-Name check box of the columns you want to display in the table.

    • Reset Preference—Reset the displayed columns to the default set of columns in the table.

      Hover over the More Options (vertical ellipsis) and select Reset Preference.

  • Interface Traffic—View a graphical representation of the link traffic (in bps) for interface A and Z based on the time range selected from the Period list. A Link Traffic pop-up appears, which you can pin anywhere on the screen using the pin icon. From the Period list, you can select an option to view the traffic data for Previous 3 Hours, 1 day, 1 Week, or Custom time ranges.

  • Interface Delay—View a graphical representation of the link delay (in milliseconds) for interface A and Z based on the time range selected from the Period list. A Link Delay pop-up appears, which you can pin anywhere on the screen using the pin icon. From the Period list, you can select an option to view the delay data for Previous 3 Hours, 1 day, 1 Week, or Custom time ranges.

• From the Diagnostics list, you can:

  • Show Interface—Runs the show interfaces CLI command for each interface associated with the link. Interface related information is displayed on the Diagnostics window. You can view the status, type, node for which the command is run (From), description, and time of last execution, for each associated interface. Once the commands are run, you can view detailed execution details under the Result tab.

    Note:

    On the Diagnostics page, from the New list, you can run a new ping and traceroute command. You can also export all the diagnostic related information to a text file by selecting the command and clicking Download.

• Download links information—Click Download to download detailed information about all the existing links in the topology in CSV format.

• From More List, you can:

  • View details about the link by clicking the Details icon when you hover over the link name or click More > Show Detail. A moveable pop-up with interface stats for Node A and Node Z, traffic (for previous 3 hours, 1 day, 1 week, or Custom time range, and link details is displayed which you can pin anywhere on the screen.

  • Filter selected link on the Topology Map. Only the selected link is displayed.

  • Zoom in to the selected link on the Topology Map.

  • Trigger LSP Optimization for the selected link. For more information, see .

  • Force Delete—Delete one or more links from the topology. Force delete is used to delete links that are not completely withdrawn. When the TopoServer has not received the link withdrawal message from the network, the link withdrawal is considered incomplete. This can cause the network model (maintained by TopoServer) to be out-of-sync. You can fix this sync issue by force deleting the link and then syncing the network model again.

    CAUTION:

    Force delete a link only in extraordinary circumstances, such as troubleshooting, because force deleting a link that's working normally might cause Paragon Automation to be out-of-sync with the live network.

    To force delete a link:

    1. Select one or more links from the Link tab of the network information table and click More > Force Delete. Alternatively, right-click on the selected links and select Force Delete.

       A confirmation message appears.

    2. Click Yes.

       The link is deleted from the table and the topology map. After the link is deleted, synchronize the network model. For more information, see Modify Pathfinder Settings From the GUI.