Configuring a Loose Route

The default setting for the tunnel is to route it dynamically. Note that for Cisco tunnels, the path should be configured with loose routes to the ABR. To change the paths to configured loose routes, open the LSP Tunnel window in the Tunnels tab on the Network Info table. Click Modify and then select “All Entries” and change the Path Config. Options to “Add” “Config” to configure the route.

Notice that a loose route is now given in the Configured column, indicated by **.

Figure 1: Configured Loose Routes Table showing network routes with columns: NodeA.ID for source nodes, NodeZ.ID for destination nodes, Type for connection type, Pri and Pre for priority and preference, Current_Route for current paths, and Configured for configured paths.

Table showing network routes with columns: NodeA.ID for source nodes, NodeZ.ID for destination nodes, Type for connection type, Pri and Pre for priority and preference, Current_Route for current paths, and Configured for configured paths.

A route can also be manually configured. For example, select a tunnel and click Modify and then select “Selected Entries.” In the bottom half of the window, there is a table with the route for the tunnel. To configure the path, double-click the cell underneath the column “Configured Route”. Here you can enter in the path, using ** to indicate a loose route after the area border routers.

Note:

The Exclude-IP-Address feature is not currently supported for inter-area tunnels.

Figure 2: Configuring a Route for a Specific LSP Tunnel Network configuration interface for setting up tunnels, showing table with columns Pathname, Opt, Configured Route. Add Row and Delete Row buttons present.

Network configuration interface for setting up tunnels, showing table with columns Pathname, Opt, Configured Route. Add Row and Delete Row buttons present.

After configuring the routes as indicated in the previous step, LSP configlets can be generated for the newly created LSP tunnels. This is accomplished through Design > Confligets/Delta > LSP Configlet. For more information, see LSP Configlet Generation Overview.

Figure 3: Example of an LSP Configlet Configuration snippet for a network device using MPLS Traffic Engineering. Sets up Tunnel11001 from SFO to NYC with explicit path and bandwidth reservation.

Configuration snippet for a network device using MPLS Traffic Engineering. Sets up Tunnel11001 from SFO to NYC with explicit path and bandwidth reservation.