Only the RLOC (which represents the IP address of the connected router) changes. In other words, when the device moves from one location to another, it still keeps its IPv4 or IPv6 address, which is the EID part. With LISP, the change in location of a device does not result in a change in its identity. + Routing locators (RLOCs) – assigned to devices (primarily routers) that make up the global routing system. + Endpoint identifiers (EIDs) – assigned to end hosts. Locator ID Separation Protocol (LISP) solves this issue by separating the location and identity of a device through the Routing locator (RLOC) and Endpoint identifier (EID): We can say routing in the Internet today is like putting direction signs about every city in the world at every crossing. When a host moves from one location to another location, it is assigned a different IPv4 or IPv6 address, which overloads the location/identity semantic. In the Internet nowadays, the IPv4 or IPv6 address of a device represents both its identity and location.
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