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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control)
Fahraini Bacharuddin
Mercu Buana University
Computer Science & IT

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Optimum Work Frequency for Marine Monitoring Based on Genetic Algorithm Fahraini Bacharuddin; Hadi Wuryanto; Yuliza Yuliza; Beny Nugraha
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 4: August 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i4.7328

Abstract

The communication using of HF (High Frequency) is a system that depends on wave propagation using sky waves reflected by the earth's ionosphere layer so that it is highly effective for long distance communication, but highly dependent on varying ionospheric conditions from day and night (time after time) as well as the location of the transmitter and receiver radio. Currently, there is only one main frequency channel and one reserve frequency channel so that there are frequency constraints unable to communicate due to ionosphere changes. This research will predicted allocation of HF frequency to support long distance communication for marine monitoring using Genetic Algorithm method. Output or prediction results in the form of Optimum Work Frequency (OWF) for 24 hours and frequency graph.
Mitigating Broadcast Storm on Metro Ethernet Network Using PVST+ Beny Nugraha; Bayu Fitrianto; Fahraini Bacharuddin
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 4: December 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v14i4.3880

Abstract

Broadcast storm attack on the layer 2 networks included looping and duplicate packets that are transmitted continuously in order to prevent the service of the network, thus, it is the type of attack that is against availability. In this research, a Spanning Tree Protocol method, namely PVST+ (Per VLAN Spanning Tree Plus), is used to overcome the problem caused by the broadcast storm attack on Metro Ethernet Network. The PVST+ serves as a redundant network management and it prevented looping on the network. The result obtained from this research is PVST+ is able to mitigate broadcast strom that is shown by the decrease of number of packets and the decrease of the average packet per-second. The average packets per-second on VLAN 1 decrease to 274,041 and the average packets on VLAN 10 decrease to 267,794 packets per-second.
Co-Authors Bayu Fitrianto Beny Nugraha Hadi Wuryanto Yuliza Yuliza