You can expand subnetworks within a topology graph to visualize the internal nodes (including the access nodes), connectivity, and hierarchical relationships directly in the canvas.

Expanding subnetworks is supported to multiple levels.

When you expand a subnetwork, all internal nodes appear (along with access nodes) in the canvas. When you collapse the expanded subnetwork, all internal nodes (both access and non-access nodes) continue to appear in the parent network. Therefore, using Expand Subnetwork option is disabled after the first use as the subnetwork stays expanded with all internal nodes appearing.

After you expand a subnetwork, you will observe the following limitations:

• The Group By option under Display Settings is not available.

• When you choose Geo Map Layout from Display Settings, you receive a message that the expanded subnetworks will not be in the same state when toggled back from the geo map layout. Click OK to proceed.

To expand subnetworks in the topology graph:

1. Open the topology graph.
2. Locate the subnetwork that you want to expand.

   Note:

   Subnetwork nodes are represented by a unique icon.
3. Right-click on the subnetwork and select Expand Subnetwork from the context menu.

   The subnetwork is expanded within the current canvas. The canvas automatically lays out the nodes and edges in the subnetwork for optimal visibility. The subnetwork name appears on the top-left corner of the canvas.

   Note:

   Use Expand Node to view only access nodes within a subnetwork and use Expand Subnetwork to view all internal nodes (along with access nodes) within a subnetwork.
4. (Optional) You can click icon to search for components within the topology graph.

   The Search and Filter Topology panel appears on the left navigation pane that shows all internodes of the subnetwork along with all nodes and edges of the parent network in a tree view.

5. (Optional) Expand multiple subnetworks including the nested subnetworks.
6. Use Zoom options or move the subnetwork for a better visibility.
7. Right-click on the subnetwork and select Collapse Node from the context menu.

   The expanded subnetwork is now collapsed into the parent network. However, all internal nodes of the subnetwork continue to appear in the parent network.

You can isolate a subnetwork within a topology graph to view all the nodes and edges associated with the subnetwork. This option isolates the subnetwork alone into a new view and does not show all the nodes and edges of the parent network, but shows the node connecting it to the parent network.

Isolating subnetworks is supported to multiple levels.

To isolate a subnetwork in the topology graph:

1. Open the topology graph.
2. Locate the subnetwork that you want to isolate.

   Note:

   Subnetwork nodes are represented by a unique icon.
3. Right-click on the subnetwork and select Isolate from the context menu.

   The subnetwork is isolated from the parent network and canvas shows only the isolated subnetwork with all its subnetwork nodes. The subnetwork name appears on the top-left corner of the canvas.

4. (Optional) You can click icon to search for components within the topology graph.

   The Search and Filter Topology panel appears on the left navigation pane that shows only the nodes and edges within the isolated subnetwork in a tree view.

5. (Optional) You can further isolate the nested subnetworks.
6. Use Zoom options or move the subnetwork for a better visibility.
7. Use to exit the isolate mode.

The layered view displays the name of the selected service or connectivity in the page title, with Underlay shown as the subtitle. The canvas shows the first two enabling layers. In the top-left corner of each layer, you can find the technology, layer number, and total number of layers. Nodes that exist in both visible layers are linked by a dashed line, called the bridge connection, making it easy to identify the shared nodes. Moving a common node in one layer automatically moves the corresponding node in the other layer. The following image shows the Underlay page with common nodes.

Description of the illustration img_underlay.png

To view underlay connectivities in a layered view:

1. Right-click on the required service or connectivity and select Show Underlay.

   The Underlay page appears, displaying a layered view of all nodes and connectivities under the selected connectivity or service.

2. Select a network element or a connectivity in a layer to view its details.
3. Click the Settings icon to adjust the settings.
4. Use the Layer n tab or Global tab to customize layer-specific or global settings.

   Where, ‘n’ indicates the selected layer number.

5. On the Layer n tab:
   • Select a layout from the Layout list.

     Note:

     If you choose Geo Map Layout, the view switches to the map layout.
   • Enable the required options in Alarm Status.

     Note:

     You can choose multiple alarm statuses.
6. On the Global tab:
   • Select the desired path from the Show Path list.

     Note:

     You can select either a single path or all available paths. By default, the first path is displayed on the canvas.

   • Set the maximum number of paths using the Max Paths list.

     Note:

     The maximum number of paths supported is 10.
   • Enable required labels and synchronization settings under Other Settings. The options are:
     • Show Interface Labels: By default this label is turned off.
     • Show Connectivity Labels: By default this label is turned on.
     • Show Node Labels: By default this label is turned on.
     • Bridge Node Synchronization: By default this label is turned on. If you do not want the corresponding node in the adjacent layer to move when you move the selected node, turn off this label.
7. In the layered view, click the Cross Connect icon above the network element to view the cross connects.
8. View the node capacity by clicking the battery icon below the network element. The bottom-right corner shows the capacity badge that indicates the current node capacity in 0–25%, 25–50%, 50–75%, or 75–100% range.

   If there is an alarm on the node, an alarm badge appears. If the node is part of a network, the network badge appears in the bottom-right corner. Hover over the network badge or the node, the corresponding network name appears above the node.

9. Zoom in or out on the desired layer using your mouse to adjust the view.
10. Refer to the legend at the bottom of the layered view for icon, path, and specification definitions, and their corresponding colors and symbols.
11. If there are more than two layers, a dropdown arrow appears indicating the number of additional layers available. Select the down arrow to navigate to the next layer. The canvas will scroll showing layers 2 and 3.

    Similarly, if more layers exist above the currently visible ones, an upward arrow appears indicating the additional layers above.

    The following image shows the view when there are more than two layers.

Description of the illustration img_underlay_multiple-layers.png

A connectivity can have multiple services or connectivities running on it. To visualize a specific overlay, you must select the required connectivity, facility, channel, or service.

To view overlay connectivities:

1. Right-click on the desired connectivity and select Show Overlay.

   The Overlay page appears and lists all connectivities and their IDs above the selected connectivity.

   Note:

   If there is only one overlay, this page does not appear.
2. Click an ID link from the list to view details for that connectivity.

   The corresponding connectivity and service details are displayed in a table in separate tabs.

   Note:

   If the circuit is channelized you can select either the facility or a specific channel.
3. Select the required connectivity or service on the Service tab to view the corresponding underlays. The following image shows the layered view that appears.

Description of the illustration img_overlay_layeredview_result.png

If you access the Service Topology directly using the Topology link from UIM or search for a specific Service Topology with the ATA Search feature, you can view the underlays by selecting the layered view icon located along the right margin of the canvas.

The Search and Filter Topology panel has a search bar with filter options under it. Each filter option represents one filter type, such as Location, Network Type, and so on. Each option has a value chosen by default. Below the search bar is a list of all the nodes and edges in a topology graph. The nodes are grouped into categories by Location, while the edges are grouped separately.

The following filters and child filters are available in ATA:

1. Location

   • Location Code

   • Alarm (Yes, No)

   • Device Type

2. Network Type

   • Alarm (Yes, No)

   • Device Type

3. Device Type

   • Alarm (Yes, No)

4. Technology

   • Rate Code

   • Connectivity Specification

When a user selects any filter, the corresponding child filter (the second-level filter) appears, and it's corresponding values can be selected.

Use Search and Filter Topology as follows:

1. Search for a network element or multiple network elements within the topology graph.

   Note:

   You can use a global search by entering a required value to search for the network element.

   The search is case sensitive.

2. View all nodes and edges in a tree view.
3. Select the required nodes or edges from the tree view to the selected elements highlighted within the topology graph and an overview panel appears on the right-side that shows the details of the selected node or edge.
4. Use the filter chip options to filter and search for the required network elements. You get the filter chip options based on the network elements you select.
5. Use the filter chip options as follows:
   1. Select an option to view the corresponding list of network elements.

      Note:

      You may select any number of filter chip options.
   2. Click on the selected option within the Search bar to view a list of values you can select.
   3. Select the required value to view the list of network elements for the selected value.

      Note:

      The highlighted nodes appear along with their associated edges in the canvas. When filters are removed, the entire topology appears.

   4. Select Node or Edge to toggle between the list of nodes or edges.

      Note:

      For edge search, the terminal nodes of the matching edges appear on the canvas.

   5. Click on a filter chip to change the value of the corresponding filter chip.
   6. Select a filter chip to view only the corresponding part of the topology graph in the canvas.
   7. Close the filter option to deselect the filter.

Figure 4-10 Example of Network Type Filter Applied to a Network

Description of "Figure 4-10 Example of Network Type Filter Applied to a Network"

Figure 4-10 shows an example where the Network Type filter with value "MSAN" has been applied. The nodes are filtered in the tree-view on the left panel as per the value, and highlighted in the canvas.

A network ring is a closed loop of nodes and edges that starts from a node, connects other nodes and ends at the starting node.

Ring Search allows the user to find all the naturally occurring rings in a searched network displayed on the canvas. Using the Ring Search, you can search for all rings based on nodes and edges. The Ring Search can be customized by creating a custom graph based on the criteria you wish to use in identifying the rings. For example, you can build a search querying all devices with a specific technology and connectivity with a specific rate code for a specific area.

When you switch to the Ring Search, the list of rings in the graph appears on the left side of the screen.

You can view ring information by selecting a ring from the list. The chosen ring is highlighted on the canvas, and the Ring Capacity panel appears on the right side of the canvas.

The Ring Capacity panel provides the following details:

• Total Capacity: The total capacity of all edges within the ring.
• Capacity Consumed: The sum of the capacity values of all edges within the ring.
• A linear visualization of the ring with all nodes and the corresponding edges within the ring.

You can choose to view any number of rings or all rings available on the topology. When you select a ring, the associated nodes and edges appear in a tree view in the Ring Search panel. If the list of nodes/edges/rings is too long, then it is divided into different pages that can be viewed by clicking the page numbers listed next to the dropdown menu.

You can also filter rings using the filter chip options below the search bar. For example, if you select a filter chip for a specific location, all rings that are available within the filtered location in the rendered network appear. See "Viewing and Filtering Rings within a Searched Network" for more information.

The following image shows the ring search within a searched network:

Figure 4-11 Search for a Ring within a Network

Description of "Figure 4-11 Search for a Ring within a Network"