The internet mobile host protocol (IMHP.pdfVIP

The Internet Mobile Host Protocol (IMHP) Charles E. Perkins perk@ Andrew Myles andrewm@.au David B. Johnson dbj@ Abstract work number assigned to the single network of inter- est, packets to and from the mobile computer could be This paper describes the Internet MobileHost Pro- delivered as long as the bridges know whether or not tocol (IMHP), which allows transparent routing of IP the mobile computer is within their individual range. packets to mobile hosts in the Internet, while using Similarly, in order to provide convenient mobility to only the mobile host’s home IP address. No changes the mobile user, we wish to avoid any need for reboot- are required in stationaryhosts that communicate with ing the computer after each network reconnection (i.e., mobile hosts, and no changes are required in mobile after each move from one attachment point to another). hosts above the IP level. IMHP quickly converges to Our vision is that of a large population of mobile optimal routing following the movement of a mobile users, each expecting and obtaining the highest level host, while maintaining the weak security model of of service from their mobile computers and their ex- today’s Internet. Detailed examples of operation are isting (stationary) computer resources, unconstrained presented. by and unaware of the new problems caused by the incompatibility of their network requirements and th