Now we mentioned that our I P V six addresses don't really have formal classes, but there are a couple of different types of I P D six addresses that we do have to be aware of.
The first type that we need to talk about is going to be, you know, cast. Now, when we're talking about a unit cast address, we're talking about a single address for single interface, a 1 to 1 relationship. When you're using your computer and you're sending information to a unit cast high P V six address, that means it's just you talking to
Now, within this category of, you know, cast addresses, we have a few different types of, you know, cast addresses. The 1st 1 is going to be link Local are linked. Local addresses is basically the I. P V six version of Pippa. It's a self assigned address that uses neighbor Discovery sort of like I p.
It's what your computer uses when it's using I P V six to configure, and
it doesn't have anyone telling it what its I P address should be. So it talks around to the neighbors using neighbor Discovery and auto assigns itself an I P V six address, which is which is called a link local address. Ah linked local address cannot be routed
so it can on Lee be used to send information to other computers
using the I P V six link local address that's in the same network. Andi can't you can't take a link local address and route it over the Internet when we're looking at an I P V six address from the beginning,
our link local addresses will start with will all be similar and that they start with the same few the same few characters. And there's going to be F E eight or F E nine as well as F e a N F E V. So if we see
and I p v six address that starts with
ate something Colon,
the rest of our I P V six address
that f E eight at the beginning, there means that we're using a link local address that can only be used on our network.
The next type of unit casts a dress that we have in our I P C B six
address system is going to be our site local. This is similar to unique local addresses
and our i p V four private addresses Again, our site Local addresses are going to be like when we're talking about our I p v four
private addresses. Their dresses that you can't
aren't globally row double. We can't take a site local address and then try to access it from a different network. They're not public addresses. There are private addresses on and then in our I P V six scheme, we can refer to these A site local. And all of these addresses will actually start with
F E C f e d f e as well as f e f. So just remember, if we see any I P v six addresses which start with these any of these characters here, these air going to be our site local addresses and are not globally route of
our next type of address that we're gonna talk about for TV 60 unit cast type addresses are going to be our
unique local addresses these air very similar to our site local, and that they're just like our I p v four private addresses. They're just for use within a network just for use on the private side and not globally row double. So our unique local and these are just going to start with F C
D zero and again, our site local and our unique local are two very, very similar
addressing schemes for I P V 60 unit cast dress and that they're like our i p four private addresses. Her last type of unit cast address our last type of I P. V 61 toe. One address is going to be something called Global Unit Cast. A global unit past addresses a single interface across the globe with the amount of
addresses that we get with I p. V six with the
trillions times, trillions times, trillions of addresses that we have with I p V six, we could have single addresses. We can have a single refrigerator with a globally with a global unit cast with a globally row double I p d. Six address because we're not as worried about running out as we were with I p V for our Global Unit cast address. It's
similar to our i p V for public address
again in the sense that it can be globally routed and we could connect to it over the Internet. When we're looking at the I P V six Global unit cast addresses, these air going to be addresses that when we're actually looking at the buy in ery of our 128 bit address. So not just not
F E to zero address when we're actually breaking that down in looking at the binary we're seeing 001 binary header. This 001 binary header is actually followed by 40 45 bit
global routing prefix. So the next 45 bits after our 001 binary header the next
45 binary numbers are going to be our global routing numbers help us know how to globally route this address. And then we're going to have our 16 bit network I D. And finally followed by a 64 bit individual 90. When we take a look at all of these numbers, we have 001 binary header,
so that is three bits,
three binary numbers
plus 45 global routing bits. So we have 45 additional bits, plus our 16 bit network I D followed. Finally, by our 64 bit individual, that's that'll be our host and we do our math. Here
we have our 16 plus 64 that will give us a tea and then any plus 45 that will give us 125 plus our Final Three, and we see how we have our 128 bit address to reconfirm that we've used up all of the bits of our address.
Global unit cast. It's sort of like
public. It's our public. I pee before address for everybody and open up a lot of opportunities, a lot of
new ways to route information in the future. But again, I P v six is still being changed. It's still being modified the way that it works. It all works together and the way that it's split up among the different industries and the different countries, so it may be a while before it's actually put into full implementation.
still be using the I P before public addresses, and I pee before address system