Abstract: Emerging technologies need network connection every time and everywhere. MANET can be created anywhere and anytime and well suited for these technologies. Mobile Ad Hoc Networks are the flexible and low cost of deployment. The properties of MANET are attracting the attention of developers for the future applications. Routing protocol design is the important issue of Mobile Ad Hoc Network. Dynamic network feature of MANET is creating a major technical challenge. MANET has been the attention of research area in the network. Many MANET protocols having their some specific property have been modified to enhance their performance. The performance of these protocols depends on network size and pattern of node mobility thus designing of these protocols varies. This paper presents the survey of modified MANET routing protocols. The aim of this paper is to provide the performance comparison in modified protocols. Here we will compare only those properties which are common among routing protocols.

Keywords: MANET, Destination Sequence Distance Vector (DSDV), Fisheye State Routing (FSR), Wireless Routing Protocol (WRP), Dynamic Source Routing (DSR), Zone Routing Protocol (ZRP).