LISP-ROAM: Network-based Host Mobility with LISP

The LISP-MN protocol is an extension of the Locator/ID Separation Protocol (LISP) that support end-host IP mobility and that, to operate, requires updating the software of the mobile terminal. However in several scenarios this is a major roadblock to effectively deploy mobility. On the one hand the operator must support the implementation over a wide range of devices and on the other hand, end-host mobility does not provide sufficient control to the operator itself. In this paper we present LISP-ROAM, a LISP extension to support network-based end-host mobility. With LISP-ROAM, end-hosts remain completely unmodifieded while the network provides the mobility support by assigning the same IP address regardless of their network attachment point. The paper describes the protocol and presents an experimental evaluation of the performance of LISP-ROAM implemented on top of LISPmob, an open-source LISP implementation.