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Path Optimization


For many large networks, when a tunnel is rerouted due to a network failure, the new path remains in use even when the network failure is resolved. Over time, a suboptimal set of paths might evolve in the network. The path analysis and optimization feature re-establishes an optimal set of paths for a network by finding the optimal placement of tunnels using the current set of nodes and links in the network. You can request path analysis on demand, and path optimization either on demand or according to a schedule that you define.

For information on system settings that can affect path computation, see Subscribers and System Settings.

Navigate to Applications>Path Optimization to access the path optimization page.

Table 1 describes the buttons in the top right corner of the page.

Table 1: Path Optimization Actions




Analyzes the network for optimization opportunities, and generates a results report. Reviewing the report gives you the opportunity to consider the effects of optimization before you actually execute it.

To see the report, click Reports in the upper right corner of the window and select the report type you want to view.

Note: The path analysis and optimization reports do not contain any information about PCC-controlled LSPs because NorthStar does not attempt to optimize them.


Optimizes the network immediately.

Note: The optimization is based on the current network, not on the most recent Analyze report.

You can configure path optimization to be performed automatically by setting a path optimization timer in the Administration>System Settings page.