Siemens SCALANCE XM-400 Configuration Manual page 50

Description
2.6 Interface identifiers and addresses
LLA
Link local address FE80::/10
As soon as IPv6 is activated on the interface, a link local address is formed automatically.
Can only be reached by accounts located on the same link.
ULA
Unique Local Address
Defined in RFC 4193. Via this address, the IPv6 interface can be reached in the LAN.
GUA
Global Unicast Address Via this address, the IPv6 interface can be reached, e.g. via the
Internet.
Interface ID
The interface ID is formed with the EUI-64 method or manually.
EUI-64
Extended Unique Identifier (RFC 4291); method for forming the interface ID. In Ethernet, the
interface ID is formed from the MAC address of the interface. Divides the MAC address into
the manufacturer-specific part (OUI) and the network-specific part (NIC) and inserts FFFE
between the two parts.
Example:
MAC address = AA:BB:CC:DD:EE:FF
OUI = AA:BB:CC
NIC = DD:EE:FF
EUI-64 = OUI + FFFE + NIC = AA:BB:CC:FF:FE:DD:EE:FF
Scope
Defines the range of the IPv6 address.
50
SCALANCE XM-400/XR-500 Command Line Interface (CLI)
Configuration Manual, 06/2016, C79000-G8976-C252-11