| 59 | This could be a wide are network with the leaf enterprise networks (or next tier wide area networks) replaced with regions (the magenta circles). We have shown the expansion rules attached to region R3. It will be replaced by a fragment named F, where R3's interface (int1) will connect to the element named A in fragment F. When the region is replaced, the elements A, B, and C in F will be replaced with R3_A, R3_B, and R3_C to maintain their uniqueness. We do not show the expansion rules for the other regions, but they follow this convention of prepending the region name. |