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Left Pane—Options List

 

Figure 1 shows the Options list in the left side pane of the Topology view.

Figure 1: Left Pane Options List
Left Pane Options
List

You can select or deselect the options in Table 1 by selecting or clearing the check boxes.

Table 1: Left Panel Options Menu

Option

Effect When Selected

Show Node Labels

Labels the nodes on the topology map.

Show Link Labels

Labels the links on the topology map.

Show Map Tooltips

Displays identifying information in the lower right corner when you mouse over an element on the topology map.

Hide Isolated Nodes

Removes isolated nodes from the topology display.

Draw Parallel Links as Curve

When there are multiple links between a pair of nodes, this option draws the links as curves for better visibility of the paths. Without the Curve option, multiple links are overlaid and display as a single line.

Draw Path as Curve

For a path selected in the Network Information pane, displays the path as a curved line. If this option is not selected, the path displays as straight lines. Straight or curved path visualization is a matter of personal preference.

Draw Path through Layers

Displays paths that span multiple layers in a multi-layer environment.

Interface Utilization, RSVP Live Utilization, RSVP Utilization, Interface Delay, or Measured Interface Delay

The topology map can reflect only one of these five options; they are mutually exclusive. The selection is reflected both in the Link Utilization Legend that is displayed in the lower left corner of the topology map, and in the colors of the links in the topology map itself.

  • Interface Utilization: Shows the last measured interface traffic pushed from the devices to the data collectors.

  • RSVP Live Utilization: Shows the utilization as reported by the devices from the traffic engineering database (via the IGP).

  • RSVP Utilization: Colors the links based on the reserved bandwidth, as calculated by the controller from the existing reservations (reported from PCEP and/or Netconf).

  • Interface Delay

  • Measured Interface Delay

Note: The RSVP and live RSVP utilizations might be different due to the way the live utilization is reported. To reduce flooding, devices only report reservation changes whenever some thresholds are crossed. In addition, the RSVP utilization can take into account other sources of information that use bandwidth, but don't reserve it, such as the case when using SPRING LSPs, or LSPs that are configured and placed but are still in the process of being pushed to the network.

Country Map

Produces a geographical map backdrop to the topology map. This is a useful view if the topology is designed with a geographical approach. To set the latitude and longitude of a node, select the node in the Network Information table at the bottom of the Topology view, and click Modify. Once you have set latitude and longitude for the nodes in the topology, you can use the Layout menu to reset the country map based on those values.

Use the Settings drop-down menu at the bottom of the Options list to configure the way nodes and links are labeled on the topology map. Figure 2 shows the Settings drop-down menu.

Figure 2: Options List Settings Drop-Down Menu
Options List Settings Drop-Down
Menu

Figure 3 shows the labeling options available for nodes.

Figure 3: Node Label Settings
Node Label Settings

Figure 4 shows the labeling options available for links.

Change the font size of the labels on the topology map by clicking Label Font Size and selecting a size. Figure 5 shows the label font sizes available.

Figure 5: Label Font Sizes
Label Font Sizes

Use Settings>Change Utilization Setting to configure the Link Utilization Legend that is displayed in the lower left corner of the topology map. The Link Utilization Legend is shown in Figure 6.

Figure 6: Link Utilization Color Legend
Link Utilization Color
Legend

The legend indicates how various RSVP link utilization ranges are color-coded in the topology map, and the ranges are configurable. Click and drag the slider buttons between colors on the legend to change the percentages. The links in the topology map change color accordingly.

Sometimes links display as half one color and half another color. The presence of two different colors indicates that the utilization in one direction (A to Z) is different from the utilization in the other direction (Z to A). The half of the link originating from a certain node is colored according to the link utilization in the direction from that node to the other node. Figure 7 shows two colors in one of the links between vmx104-11 and vmx105-11-p107.

Next to the Settings button at the bottom of the Options list is a More Options button which offers the display options shown in Figure 8.

Figure 8: More Options Drop-Down Menu
More Options Drop-Down Menu