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cisco ccnp route dumps free download.Static prefix assignment method using the EUI-64 method.Stateless address autoconfiguration (SLAAC) method. Stateful DHCPv6 address assignment method. When using the static assignment method, the IP address and prefix are configured by the network administrator. Static assignment of IPv6 addresses for certain devices (for example, CiscoIOS routers), you can configure only the first 64 bits (the IPv6 prefix portion) and let the device automatically calculate the second 64 bits (the interface ID portion). The method for calculating interface IDs is called the EUI-64 method. The EUI-64 method, defined in RFC 4291, generates the interface ID for an IPv6 address according to the following rules.Divide the MAC address of the interface in two. Add FFFE in the middle to make it 64 bits. Invert bit 7 of the first byte (or 0 if the bit is 1, and vice versa). Figure 1-73 shows an example of generating an interface ID for an IPv6 address using the EUI-64 method. As can be seen from the figure, the interfaceThe MAC address of the interface is 0200.1111.1111. first divide this MAC address into two, add FFFE in the middle, and then set bit 7 of the first byte from 1 to 0o Thus, the interface ID of the IPv6 address of the interface is obtained 0000.11FF.FEll.lllllo FFFE0200.11 11.11110200.11FF.FE11.1111 /\00000010 I bit 7 inverted 000000000000.11FF.FE11.HU Figure 1-73 Interface ID for Generating IPv6 Addresses with the EUI-64 Method90 Chapter 1 Network Protocols and Network Device BasicsThe EUI-64 method can also be used to generate interface IDs for LLA addresses, which was mentioned in the previous section.