Make Design Choices
Now that you know how to analyze the IP addressing and subnetting needs, the next major
step examines how to apply the rules of IP addressing and subnetting to those needs and
make some choices. In other words, now that you know how many subnets you need and
how many host addresses you need in the largest subnet, how do you create a useful subnet-
ting design that meets those requirements? The short answer is that you need to do the three
tasks shown on the right side of Figure 11-11.
Design
Subnets
• Choose Network
• Choose 1 Mask
• List All Subnets
Analyze
Needs
# Subnets
# Hosts/Subnet
1 Size Subnet
Figure 11-11
Input to the Design Phase, and Design Questions to Answer
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