Author(s)

J. Faritha Banu¹, K. G. Shanthi², P. Lakshmi Priya³, M. Faritha Begum⁴

¹Department of Computer Science and Engineering, R M K Engineering College, Chennai, India.
²Department of Electronics and Communication Engineering, R M K Engineering College, Chennai, India.
³Department of Computer Science and Engineering, R M K College of Engineering and Technology, Chennai, India.
⁴Department of Computer Science and Engineering, Pavai College of Technology, Namakkal, India.

In recent years, Voice over IP (VoIP) has impacted global telecommunications and networking tremendously. Traffic engineering and Quality of Service (QoS) guarantees for VoIP services pose a challenge for network researchers and designers. The repeated use of Internet Protocol shortest path towards the same destination may lead to unbalanced traffic situations and degraded network performance. Therefore, load balancing and link utilization become the critical functions in Internet Protocol routing for providing Quality of Service assurance for VoIP application. The aim of this work is to employ Multiprotocol Label Switching Network as a traffic engineering tool to enhance the QoS for VoIP applications. To achieve this, an effective Multiprotocol Label Switching Network load balancing architecture is developed that classifies the Internet traffic flows, routes the flows into multiple paths. Flow arrival rate, packet loss rate and delay are measured and taken as the input parameters and compared with the threshold values to identify the VoIP flow. Network load status is calculated by estimating the average buffer occupancy value and multipath routing is triggered when the network load is high to enhance the QoS. The investigated performance measures like throughput, delay and packet loss are reported to show the efficiency of the proposed technique for effective VoIP flows.

MPLS, Load Balancing, VoIP, QoS, Multipath Routing

Banu, J. , Shanthi, K. , Priya, P. and Begum, M. (2016) Performance Enhancement Architecture of VoIP Applications in Multiprotocol Label Switching Networks. Circuits and Systems, 7, 2047-2058. doi: 10.4236/cs.2016.78178.