![]() Link-local addresses are of the form FE80::/10. Link-local addresses, as the name suggests, have only local significance, so they are never routed. Remember that the link-local IPv6 address is an IPv6 address that is automatically generated and assigned to an active IPv6 interface. The first scenario involves generating a link-local IPv6 address on the interface of a Cisco router. We’ll examine two particular cases that we often see on Cisco IOS devices. Let’s take a look at how EUI-64 actually operates on a real device. ![]() Real-world example of EUI-64 configuration It is used to differentiate individual devices or interfaces within the same network or subnet. The interface identifier created via the EUI-64 process serves as the device-unique portion of the address. This address can then be used by a device to access both local networks and the global Internet.The network prefix and interface identifier are concatenated to make the final (global unicast) IPv6 address.EUI-64 is used to map the MAC address into a 64-bit EUI-64 interface identifier.The MAC address comes from the hardware device.The leftmost 64 bits of the address come from the network prefix, which defines the network portion of the address. ![]() Now that we have seen how EUI-64 mapping works, let’s pause for a bit of a recap and see how the various pieces fit together in IPv6:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |