Micro-mobility protocols have been proposed to provide seamless local mobility support. This paper focuses on the performance of the handoff schemes of two candidates for micro-mobility protocols, namely HAWATT and Cellular IP. For each handoff scheme, a simple analytical model is developed for the evaluation of two characteristic performance measures: the packet loss probability during handoff and the extra delay experienced by packets that are involved in the handoff. Application of these models allows a comparison of two important handoff schemes: the Multiple Stream Forwarding scheme of HAWAII and the Semi-soft Handoff scheme of Cellular IP.