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Smart Agent and Modified Master-Backup Algorithm for Auto Switching Dynamic Host Configuration Protocol Relay through Wireless Router

Author(s)
Wahyul Amien Syafei Department of Electrical Engineering,,Faculty of Engineering, Diponegoro University, Indonesia
Yosua Alvin Adi Soetrisno Department of Electrical Engineering,Faculty of Engineering, Diponegoro University, Indonesia
Agung Budi Prasetijo Department of Computer Engineering Faculty of Engineering, Diponegoro University,,Indonesia
Abstract
Potential problems in a wireless router are the number of connected clients to DHCP (Dynamic Host Configuration Protocol) services and the durability of connectivity. Practically, some of the wireless router limits the number of the client to 15 clients due to bandwidth consumption management. DHCP is one of the services needed by wireless router, but it might be interrupted when the memory or CPU is full. This article proposes a modification of the backup algorithm in DHCP relay to overcome this situation when the memory or CPU in the wireless router is limited. The proposed backup algorithm will automatically switch the main router to the backup router every time the main router's memory is busy. Two main scenarios are conducted in this research to examine the proposed backup algorithm. First, Cisco DHCP relay services combined with OpenWRT wireless router. Second, Mikrotik original “Capsman” protocol DHCP relay combined alternatively with wireless-enabled and OpenWRT wireless router. Run test results show that the proposed backup algorithm with DHCP relay which are configured in OpenWRT wireless router can extend the number of connected clients and the durability of the wireless router when run its services as DHCP forwarder to DHCP relay and DHCP server. These combinations slightly affect the IP release time compared to regular DHCP which employs a direct connection.
Publication Details
Page(s) 248-255
DOI DOI not available
Published Journal: International Journal of Communication Networks and Information Security, Volume: 12, Issue: 2, Year: 2020

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Keywords
auto-switching, wireless router, smart, release time, DHCP, backup algorithm
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