Bi-Level Usage Example

1. Active Flow through AS-A and AS-B 2. AS-A determines that flow is subject ‘active’ service 3. AS-A triggers AR to send constrained flood • Determine new paths with different metrics • Constrain advertisement to shaded region using ‘active’ routing protocol Note: Example represents gradual active service

- Active Server

- Normal Router

- Active Router

-  Area of constrained   flooding

-  ‘Active’ Flow