LISP is one of representative identity/locator separation proposals. IETF Internet Engineering Steering Group (IESG) proposes LISP-MN (LISP Mobile Node) to support mobility base on LISP. However, this scheme needs to modify protocol stack of joined hosts, which restricts access of existing mobile terminals. So, it's hard to achieve large-scale popularization and application. This paper designs a mobility support Identity/Locator separation scheme named LISP-MNet, based on standard LISP. It achieves fast mapping entries delivery and synchronization through mapping delivery mechanism. In addition, it allows terminals to access to sites arbitrarily and switchover among different sites through active registration mechanism deployed in edge access devices without modifying protocol stack of terminals. These two mechanisms do improve mobile access ability of terminals. At last, LISP-MNet prototype is established and evaluated in areal network environment. A pressure experiment is firstly conducted on a single mapping server, of which results prove that its scale can be up to 100M. And then mobile switching delay is measured by using VLC video applications. The experimental results show that mobile switching delay is less than 2s and VLC server and client can complete synchronization in 2s after mobile terminal accesses to mobile site.