like other wireless technologies such as cellular networks, MANET face more difficult problems concerning management functions, routing and scalability . As the number of nodes increases co mplexity of MANET increases in various issues.As a solution to these complications, clustering schemes are proposed for MANET in order to organize the network topology in a ierarchical manner. Many clustering techniques have been developed. Clustering is a method which aggregates nodes into groups . These groups are contained by the network and they are know n as clusters. By Increasing network capacity and reducing the routing overhead through clustering brings more efficiency and effectiveness to scalability in relation to node numbers and the necessity for high mobility. The manager node, in clustering has responsibility for many functions such as cluster maintenance, routing table updates, and the discovery of new routes within the network. The other node named as gatew ay node communicate to the other cluster
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