From the course: CISSP Cert Prep (2021): 4 Communication and Network Security
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Subnetting
From the course: CISSP Cert Prep (2021): 4 Communication and Network Security
Subnetting
- [Instructor] It's fairly common for organizations to want to subdivide their networks into smaller pieces for manageability purposes. This is where IP subnetting can provide an effective solution. Subnetting breaks a large network address space up into manageable pieces that administrators may assign to smaller sub-networks. For example, assume that you're using the 192.168.0.0 private address space on your network. You might have a network that looks something like this, with different departments connected to different geographic regions. Instead of haphazardly assigning addresses throughout your network, you might decide that you want to use sub-networks. The 192.168 address space normally has the dividing line between network and host addresses here, giving us a single network with over 65,000 possible host addresses. If we shift the dividing line here, we now have 256 possible sub-networks with 254 possible hosts…
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