Original subtitles

I know I know what you're thinking.

You're really chomping at the bit to get this subletting, but before we talk about it, it's better

to learn the IP classes and the subnet masks first.

Right?

Octet of the IP address are broken down to provide an addressing scheme that can accommodate large and

small networks.

So they're basically five different classes of networks, and they range from A to E.

We're going to focus on classes A, B and C, which provide unique cast addresses for networks of three

different network sizes.

Class D is for multicast networking and the Class C address ranges reserved for future or experimental

purposes.

So given an IP address, its class can be determined from the three high order bits.

And by that, I mean the three leftmost bit in the first octet.

In a class I address, the first octet is a network portion.

So Class AA has a major network address of one dot zero zero zero all the way through one to seven Dot

255.255.255.0.

The next 24 bits are for the network manager to divide in subnets and hosts as he or she sees fit.

Class addresses are used for networks that have more than 65000 536 hosts.

In a Class B address, the first two octet are the network portion.

So Class B has a major network address of one two eight zero zero zero all the way through one nine

one 255.255.255.0.

Arquette's three and four.

That means 16 bit are for a local subnets and hosts.

Class B addresses are used for networks that have between 256 and 65000 534 hosts.

And finally, in a Class C address, the first three octet are the network portion.

Class C has a major network address of one nine two zero zero zero all the way through two to three

Dot 255.255.255.0 Octet for eight bits is for local subnets and hosts perfect for networks with less

than 250 for hosts.