Hands on Roaming Duration: Petri-Nets Modeling of a Wireless Mobile-IP Procedure in Cisco Platform

IETF RFC 2002 encountered some inefficiencies in registration process, one of the mobile-IP protocol three basic core capabilities. Mobile-IP is often far from optimal level, since all registration steps take place after the mobile node already roamed into the destined foreign subnet, causing packet losses problem while it is roaming. In this paper, a workaround is developed, mapping the roaming behavior to mobile-IP registration process, to model a CIA: communication inter-agents procedure. The procedure supposes an early registration of the mobile node, to a subnet predicted to roam into, using a triple-R home agent-based registration. This enabled to reduce roaming duration, eliminate packet losses, and bridge the gap between subnets, an area that until now has been largely neglected. Analytical performance results of state-transition Petri-nets model, as a function of different network parameters, are presented. Configuration file during implementation setup on Cisco platform Router-1760 using IOS 12.3 (15)T is created. Simulation results from Simulink Matlab are illustrated, to verify the effectiveness of CIA with much lower packet delays. Packets flow is reported between subnets for no more gaps of losses