Performance evaluation and enhancement of VLAN via wireless networks using OPNET modeler

TL;DR

This paper evaluates how implementing VLANs in wireless networks can enhance performance and security, using OPNET simulations to analyze delay, throughput, and routing protocols.

Contribution

It introduces a comprehensive simulation study of VLAN deployment in wireless networks, including the impact of various ad hoc routing protocols on performance.

Findings

VLAN reduces delay and traffic in wireless networks.

VLAN implementation decreases throughput due to traffic reduction.

Ad hoc routing protocols influence wireless VLAN network performance.

Abstract

A VLAN is a logical connection that allows hosts to be grouped together in the same broadcast domain, so that packets are delivered only to ports that are combined to the same VLAN. We can improve wireless network performance and save bandwidth through the characteristic VLAN network. In addition, the implementation of VLAN greatly improves wireless network security by reducing the number of hosts receiving copies of frames broadcast by switches, thus keeping hosts holding critical data on a separate VLAN. In this paper we compare wireless network with VLAN via wireless network. The proposed network is evaluated within terms of delay and average throughput using web browsing applications and file transfer in heavy traffic. The simulation was carried out using OPNET 14.5 modeler and the results show that the use of VLAN via wireless network improved performance by reducing traffic resulting in a minimized delay time. Furthermore, VLAN implementation reduces network throughput because the traffic received and transmitted has a positive relationship with throughput. Eventually, we investigated the use of adhoc routing protocols such as AODV, DSR, OLSR, TORA and GPR to improve the performance of wireless VLAN networks.