1. Before reading the text watch a video Read the text and do exercises a lans (Local Area Networks) Networking

Full Mesh WAN Topology is the topology that each sites are connected to the other sites one by one. This topology needs more resources and expensive. Beside, it needs an extra effort because of the number of the connections.

The connection number that we need for a Full Mesh Topology is calculated with the below formula:

N x (N-1) / 2

D ual-Homed WAN Topology

Dual-Homed WAN Topology is a very good solution for better performance, load balancing  and redundancy. But it has a disadvantage about the cost. It is an expensive solution. In Dual-Homed Topology, a site is connected to another two central sites. Even if one of these sites are go down, the connection continues. During normal situations, lad balancing is also provided between two links