This is an MPLS LAB design running under Dynamips.

It consists of 2 Customers, Customer A and Costomet B, each customer has 4 sites located in different areas, each of these sites have their own CE router, customer A has (CE11A, CE12A, CE21A and CE22A) customer B has (CE11B, CE12B, CE21B and CE22B)

The 4 areas are called  POP1, POP2, POP3 and POP4.  Each area has its own PE router (PE11, PE12, PE21 and PE22).

Each PE is connected to its own P router in the core network (P11, P12, P21 and P22).

P11 and P12 are connected to each other, P21 and P22 are connected to each other.

All P routers are also connected to a final P router (P1).

The Dynamips setup I have used connects all the routers to a single Frame Relay switch which is configured to connect the routers in the correct topology, discribed above and shown below.

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