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Auto-Tunnel Creation

If you choose No when prompted with "Generate auto tunnels from atconfig file?" in the previous step, then the tool will not create any auto-tunnels. You may still generate the auto-tunnels at a later time by switching to Design mode and then choosing one of the three options under the Auto Tunnel Design menu (Design > TE Tunnels > Auto Tunnel Design) as shown in the following figure. Selecting Auto Mesh or Backup will cause the tool to generate mesh group auto-tunnels or backup auto-tunnels, respectively.

To generate both mesh group and backup auto-tunnels, choose the All option.

Figure 1: Auto Tunnel Design MenuDropdown menu labeled Auto Tunnel Design with options Auto Mesh, Backup, and All for design or engineering tasks.

If you choose Yes when prompted with "Generate auto tunnels from atconfig file?" in the previous step and your network configuration files have auto-tunnels configured, then the tool proceeds to create auto-tunnels using the information stored in the atconfig file. If backup auto-tunnels are configured in the network, then FRR design is performed in the background to provide FRR node or FRR link protection for the primary tunnel. To view the auto-tunnels created by the tool, bring up the Tunnels window (Network > Elements >Tunnels) as shown in the following figure:

Figure 2: Auto-Tunnels Tagged With “AT” in the Type fFieldNetwork management interface with tunnel IDs, node IDs, configurations, routes, bandwidth, types, and secondary paths. Tabs for properties, paths, and user parameters. Sidebar navigation includes Summary, Nodes, Links, Interfaces, Demands, and Tunnels.

The figure has the Type column expanded to show that auto-tunnels have been tagged with an "AT" flag. In this example, routers LR2 & RR2 have mesh group & backup auto-tunnels configured, as indicated by the corresponding "AT" flag.

If you wish to filter for only auto-tunnels, you may use the advanced filter. Set "Type=AT" for the Enter query box and choose Match Substring as the Search Preference, as shown in the following figure.

Figure 3: Filtering for Auto-TunnelsAdvanced Filter GUI for Tunnels with query input, keys, relations, logical operators, search preferences, and OK, Cancel, Help buttons.

The resulting filtered tunnels window is shown in the following figure:

Figure 4: Tunnels Window Showing Only Auto-TunnelsNetwork monitoring tool interface displaying tunnel information with a sidebar for navigation, a table listing tunnel details like ID, nodes, bandwidth, and type, and a detail view for selected tunnel specifics.

If auto-tunnels have been generated by the tool, and you exit without first saving, then you will be prompted with the following popup message window.

Figure 5: Click Yes to Save Auto-TunnelsDialog box titled Save Environment with the message The following data has been modified: Tunnel, FRR tunnels. Save the design environment? and buttons Yes and No.

Clicking on Yes will cause the auto-tunnels to be saved and placed into an autotunnel.runcode file. An example is shown in the following figure

Figure 6: Auto-Tunnels SavedConfiguration file editor showing autotunnel.auto with tunnel data, IP addresses, and flags. Toolbar buttons for text actions. Line 1 of 71.