Análisis y evaluación de técnicas de encolamiento WRED+CBWFQ, LLQ y RTP PRIORITY para proveer QoS en la transmisión de VoIP en redes WAN.

Abstract

It is important to determine which technique is more useful when solving the problem of transmission congestion of VoIP; therefore we had to analyze and evaluate the following techniques: CBWFQ+WRED, LLQ, an d RTP PRIORITY, in order to create a checking scenario, to provide QoS in VoIP transmissions in WAN nets, and to provide a methodology guide for CISCO Academy in informatics and Electronics Faculty at ESPOCH. This study was developed by using experimental methodology and some tools such as routers, switches, IP phones, comparisons between WAN and VoIP, LINUX platform, Centos distribution for web and mail servers, Windows to generate OSTINATO, and WIRESHARK to monitor. Results showed that • LLQ technique is the best to reduce congestion transmission VoIP in WAN nets, with a band width of 163,2 Kbps, Delay 30,37 ms, Jitter 0,35 ms, lost packs 0%. Conclusions show that LLQ technique gives the best option in real time transmission. Recommendations include the use of the methodological guide for any enterprise with that net.