Implementasi Active Queue Management pada Jaringan Bottleneck
DOI:
https://doi.org/10.22441/incomtech.v13i1.16086Kata Kunci:
RED (Random Early Detection), Drop-tail, congestion control, AQM (active queue management), network traficAbstrak
Teknologi TCP end-to-end congestion control hanya menangani kemacetan jaringan dari suatu host tetapi tidak pada jaringan atau intermediate network, oleh karena itu teknologi Active Queue Management (AQM) dikembangkan untuk mengantisipasi kemacetan didalam jaringan yaitu pada router. AQM dapat mengatasi buffer overflow pada router dan mencegah terjadinya masalah sinkronisasi pada jaringan yang padat, yaitu dengan mendeteksi sebelum terjadi kemacetan jaringan. AQM RED (random early detection) dikembangkan dengan pendekatan heuristik untuk mengantikan kekurangan mekanisme Droptail pada buffer router, sehingga dapat mengatisipasi memburuknya kondisi jaringan yaitu; hilangnya paket yang berlebihan, utilitasasi link yang rendah (low throughput), dan tingginya antrian (delay), dengan demikian kemacetan yang parah (congestion collapse) tidak akan terjadi. Permasalahan ini menarik untuk dipelajari dampak implementasi AQM yang akan dilakukan dalam penelitian ini. Protokol AQM adalah mekanisme pengendali kemacetan yang diterapkan pada lapisan ke-tiga OSI pada peralatan jaringan router, dengan menggunakan simulator NS2 dibuat topologi jaringan bottleneck dan diuji coba dengan skenario trafik. Pada penelitian ini akan diimplementasikan metode AQM RED yang disimulasikan dengan pengiriman paket FTP dengan beberapa skenario trafik. Hasilnya berupa karakteristik jaringan dapat dilihat yaitu; jumlah paket yang ada pada buffer router, lamanya antrian paket pada buffer , dan banyakanya paket yang dibuang, sehingga dapat dianalisa kinerja RED yang merupakan tujuan penelitian ini. Kesimpulan yang didapat menunjukan bahwa RED mempunyai keunggulan dari karakteristik delay yang rendah dibandingkan mekanisme tanpa AQM atau Drop-tail.Unduhan
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