Arrange these steps for summarizing multiple network routes.

### Why this is right You first establish which routes are being combined. Then you verify that their address ranges form a suitable contiguous block, calculate a covering prefix, and advertise that route to the neighbor. ### The order 1. Identify the routes that need to be represented by one advertisement: the desired summary depends on the specific routes. 2. Check that the network addresses are contiguous: gaps can make a compact summary cover unintended space. 3. Find an aligned summary prefix that covers the intended routes: the prefix must match the block's boundary and size. 4. Advertise the summary so the neighboring router can use it: the route only simplifies the neighbor's table once communicated. ### Terms - **IP**: Internet Protocol. The addressing system used by routers to forward packets. ### Remember Check contiguity and alignment before advertising a summary.