The mesh topology is the last topology we discuss. In this layout, every system is connected to every other system. The main advantage of this topology is high availability. The main disadvantage of this topology is cost, both administrative and physical. Because each system is connected to each other, the amount of cabling and maintenance necessary can be prohibitive, especially in larger networks. The formula for determining the amount of cable needed in a mesh network is:

(N x (N - 1))/2, where N is the number of systems to be interconnected

In our example in Figure 5, we have six systems that require 15 cables to create a mesh network. This topology is mainly used in Wide Area Network environments or in environments where high availability outweighs the costs associated with this amount of interconnection.

Thursday, October 1, 2009

## MESH TOPOLOGY

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