Peningkatan Performansi QoS VoIP dengan Menggunakan WFQ pada Jaringan LAN


  • Alfajri Alfajri Politeknik Caltex Riau


Realtime VoIP services make the QoS vulnerable to drop when faced with heavy traffic. For this reason, it is necessary to have a management that can manage existing traffic. One method that can be applied is the WFQ queue method. CBWFQ is a WFQ derivative queue method that is based on giving bandwidth to traffic on a network. In this study CBWFQ was applied to routers to increase QoS from VoIP on LAN networks with a bandwidth of 10 Mbps burdened with UDP traffic. VoIP QoS is measured in conditions before and after CBWFQ is applied to the router as many as 10 samples and averaged. The QoS parameters used in this study are packet loss, delay, jitter, and throughput. CBWFQ that was implemented successfully reduced the value of VoIP packet loss and delay traffic. Packet loss decreased by 18.13% when VoIP was given a bandwidth of 50 Kbps and continued to decline to 99.24% when VoIP bandwidth was 500 Kbps. Delay decreased by 49.93% when VoIP bandwidth was 50 Kbps and continued to decline to 78.11% when VoIP bandwidth was 500 Kbps. While the jitter value gets worse after CBWFQ is applied, which is up by 696% when VoIP bandwidth is 50 Kbps, 364.49% when VoIP bandwidth is 100 Kbps, 229.25% when VoIP bandwidth is 140 Kbps, 207.19% when bandwidth VoIP is 160 Kbps, 169.65% when VoIP bandwidth is 180 Kbps, and 40.02% when VoIP bandwidth is 500 Kbps. Even so, the measured jitter value is still in a good category based on THIPON standards.