From the course: Cisco Networking Foundations: IP Addressing

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IPv6 link local

IPv6 link local

From the course: Cisco Networking Foundations: IP Addressing

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IPv6 link local

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- [Instructor] Next, let's consider an IP version six link local address. And as the name suggests, this address can only be used on a local link. In other words, we cannot send traffic to this address if this address lives beyond another router. In this case, we see R1 communicating with R2 and it's going to R2's link local address of FE80::2. If R1 were trying to communicate with R3, it could not have sent traffic to R3's link local address of FE80::B because the link local address, it's only valid on the local link, meaning it cannot go through a router. And here's the format that will allow us to recognize a link local address. We're told that the first 10 bits must be seven one's and then a 010, and that's followed by 54 zeros. And finally, the last half of the 128 bit IP version six address, the last 64 bits, that's the interface ID that identifies the host. And you'll typically see the format written as this.…

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