3.6.1–3.6.4: To plan an Ethernet network, you first determine how the network will be used. Gather information about the number of hosts, necessary applications, security needs, reliability requirements, and any wireless requirements.
As soon as you know why you are building the network, you need to plan the physical and logical topology. Consider the following points for each topology:
• For the physical topology, plan the proper environment (heat and temperature), availability of power, and device locations, cable connection distances and types, and device hardware configurations.
• For the logical topology, plan the size of each broadcast and collision domain, the IP addressing and naming schemes, sharing configuration, ...