Performance Investigation of Virtual Private Networks with Different Bandwidth Allocations

TL;DR

This paper investigates how different bandwidth allocations affect VPN performance, using NS2 simulations to evaluate metrics and robustness in mobile networks, especially during link failures.

Contribution

It introduces a strategy combining VPN bandwidth management with AODV protocol to enhance mobile network performance under various traffic conditions.

Findings

Optimal bandwidth allocations improve VPN performance.

The proposed strategy maintains robustness during link failures.

Simulation results validate real-time application suitability.

Abstract

A Virtual Private Network (VPN) provides private network connections over a publicly accessible shared network. The effective allocation of bandwidth for VPNs assumes significance in the present scenario due to varied traffic. Each VPN endpoint specifies bounds on the total amount of traffic that it is likely to send or receive at any time. The network provider tailors the VPN so that there is sufficient bandwidth for any traffic matrix that is consistent with these bounds. The approach incorporates the use of Ad-hoc On demand Distance Vector (AODV) protocol, with a view to accomplish an enhancement in the performance of the mobile networks. The NS2 based simulation results are evaluated in terms of its metrics for different bandwidth allocations, besides analyzing its performance in the event of exigencies such as link failures. The results highlight the suitability of the proposed strategy in the context of real time applications.