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 from the Tunnels tab. 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 displaying network routing info with columns NodeA.ID, NodeZ.ID, Type, Pri, Pre, Current_Route, and Configured. Lists routes between nodes like SJC, WDC, PHI, detailing specific routing paths and requirements.

Table displaying network routing info with columns NodeA.ID, NodeZ.ID, Type, Pri, Pre, Current_Route, and Configured. Lists routes between nodes like SJC, WDC, PHI, detailing specific routing paths and requirements.

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 GUI for configuring network tunnels with a table showing Pathname 10 and route from SFO-10.10.1.3 to 10.10.212.1. Add Row and Delete Row buttons.

GUI for configuring network tunnels with a table showing Pathname 10 and route from SFO-10.10.1.3 to 10.10.212.1. Add Row and Delete Row buttons.

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 Cisco router defining an MPLS Traffic Engineering tunnel from SFO to NYC using an explicit path.

Configuration snippet for a Cisco router defining an MPLS Traffic Engineering tunnel from SFO to NYC using an explicit path.