Recently, Wireless Mesh Network is deliberated as a significant technology due to its self-healing and self-organizing characteristics. In WMN, data is forwarded through multiple hops to the destination node. One of the factors that impact the network performance is the secure communication delay. An authentication technique having significant delay may enhance the possibility of several security threats. A number of authentication protocols have been proposed in the literature but if existing practices are deliberated then to optimize one of the constraint other parameters are affected radically. In this manuscript, a Diffie-Hellman elliptic curve technique is used over WMN which reduces latency and computational overhead issues. Further to prove the integrity of proposed work, the performance is measured theoretically and analyzed experimentally over ns2 simulator.