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 Modify mode from Modify > Elements > Tunnels. 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 management data with columns NodeA.ID source node NodeZ.ID destination node Type of connection Pri priority level Pre precedence Current_Route between nodes Configured routing path

Table showing network management data with columns NodeA.ID source node NodeZ.ID destination node Type of connection Pri priority level Pre precedence Current_Route between nodes Configured routing path

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 Configuration interface for network tunnels showing a table with columns Pathname, Opt, and Configured Route. Buttons include Add Row and Delete Row.

Configuration interface for network tunnels showing a table with columns Pathname, Opt, and Configured Route. Buttons include Add Row and Delete Row.

After configuring the routes as indicated in the previous step, LSP configlets can be generated for the newly created LSP tunnels. This is accomplished in Design mode, 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. Tunnel11001 from SFO to NYC uses IP unnumbered Loopback0. Tunnel destination is 10.10.10.11 with 1000 bandwidth units. Explicit path Tunnel11001.p0 is enabled with specified hops.

Configuration snippet for a network device using MPLS Traffic Engineering. Tunnel11001 from SFO to NYC uses IP unnumbered Loopback0. Tunnel destination is 10.10.10.11 with 1000 bandwidth units. Explicit path Tunnel11001.p0 is enabled with specified hops.