From the course: Cisco Certified Network Associate (CCNA) v1.1 (200-301) Cert Prep

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IPv6 link-local

IPv6 link-local

From the course: Cisco Certified Network Associate (CCNA) v1.1 (200-301) Cert Prep

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IPv6 link-local

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(bright music) - [Instructor] In this video, let's take a look at the format of an IPv6 link-local address. And as the name suggests, this address can only be used on a local link, on a network segment in other words. Consider R1 on screen. It could send a packet to R2's link-local address of FE80::2, but it could not be forwarded over to R3 because a link-local address is only usable on a local link. It cannot be routed. Here's the format. It begins with 1111 1110 10. Those are the first 10 bits. The next 54 bits, they're all zeros. And the last 64 bits, those come from the interface ID. And you might see in the literature that you can recognize a link-local address because it starts with FE80::/10, saying that the first 10 bits in FE80 are all that's required. It suggests that we could have different bits after that. But if you look at this, the next 54 bits after those first 10 bits, by definition, they're all zeros. So in my view, we could say that a link-local address could be…

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