From the course: Learning Subnetting
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IPv4 address formatting
From the course: Learning Subnetting
IPv4 address formatting
- [Instructor] Let's get started with our discussion of a IPv4 subnetting by considering the format of an IPv4 address. It really reminds me of a street address, let's say that somebody gave you their address and it looked like this, 27837th Street. Huh, what exactly does that mean? We're not sure because there's no space between the house number and the street number. That could mean 278 37th Street, or if we put the space in a different spot, it could mean that they live at 2783 7th Street. Which is it? We don't know because we don't know where that dividing line lives. Well, we have a similar paradox in the IPv4 addressing world. If we're given an address like this, 10.1.2.3, there's only two parts to it. There's a part of that address that references the host, the device on the network, and the other part of the address references the network or the subnet itself. So two different parts, we've got a network portion of the address, that's the first part, and then we've got the host…
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