Generally some nodes are probably failed during the broadcasting messages in network. Improve the reliablity for broadcasting messages we consider the above problem. Byzantine model are judged, which is most common failure model. It consists the failure nodes in random behavior and also has a chance to make a network as weaken. We mainly centre on total decentralizing the network. Broadcast protocol is introduced to control the failure nodes. Control zone is proposed which is based on broadcast protocol to network. This can evaluate the reliable broadcasting messages in grid form of network. The proposed protocol improves the probability of protocol. The system considers the problem of reliably broadcasting information in a multihop asynchronous network that is subject to Byzantine failures. That is, some nodes of the network can exhibit arbitrary (and potentially malicious) behavior. Existing solutions provide deterministic guarantees for broadcasting between all correct nodes, but require that the communication network is highly-connected (typically, 2k + 1 connectivity is required, where k is the total number of Byzantine nodes in the network). In this paper, we investigate the possibility of Byzantine tolerant reliable broadcast between most correct nodes in low-connectivity networks (typically, networks with constant connectivity). In more details, we propose a new broadcast protocol that is specifically designed for low-connectivity networks. We provide sufficient conditions for correct nodes using our protocol to reliably communicate despite Byzantine participants. We present experimental results that show that our approach is especially effective in low-connectivity networks when Byzantine nodes are randomly distributed.