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

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IPv6 loopback

IPv6 loopback

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

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IPv6 loopback

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(gentle music) - [Instructor] In the IP version four world, we have a loop back address of 127.0.0.1, and it's used to test to make sure that the network interface card is reachable. Or sometimes a web developer, they'll run a web server on their local machine and if they want to pull it up in a browser they can point to 127.0.0.1. We put the same thing in the IPv6 world. It's a destination IPv6 address of ::1. That means that the first 127 bits, they're all zeros and it just ends in a one. And we write that as ::1. That's our local loop back, also known as the local host address, very similar to the 127.0.0.1 address we have in the IP version four world and we're going to be able to use this to test to make sure the IP version six stack is operating on our machine. Or another example is a web developer might be running a web server locally. They could point to their loop back address to pull up the webpage that they're serving up from their local machine. And since a local loop back…

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