Packet Tracer Labs 3.2.2

 In this Packet Tracer we venture into the territory of dynamic routing. The network has already been configured with autonomous systems. We configure a default route from AS2 to AS3 and then to AS1 in order to simulate the Exterior Gateway which would take place from both routers to the ISP. Then a reverse route must be configured from the ISP to AS2 and AS3, note that this new route must be a static route. Observing the routing table is also part of procedure in order to notice and examine the changes from the forward and reverse routes.