This multimodal network with Cisco devices was made in the simulator Packet Tracer [Networking Academy] and can be downloaded here [MultiModalNetwork].
In the network shown above, there are 5 main parts:
1 – One EtherChannel network on the left that interconnect both switches merging the 8 bridge ports in one, making one 8gbps bridge link between both. This solution can solve the neck of having only one 1gbps link. Read more about EtherChannel [Read It].
2 – RIP was applied to the top section of the network to auto-adjust routes between the server and the bigger network. This technology is simple, works fine but has limitations when the network is too big. Read more about RIPv2 [Read It].
3 and 4 – OSPF multilayers is the solution to the sections at the center and on the right side of the diagram. Once the network is big it is wise to break it into segments for the OSPF to reduce the size of the routing tables in each router and the network traffic for OSPF. Read more about OSPF Single [Read It]
5 – At the bottom of the diagram you can see that EIGRP was used to connect the server to the rest of the network. It is another powerful routing protocol that has to be considered when all the infrastructure is Cisco because this protocol is proprietary. Read more about EIGRP [Read It].