@techreport{oai:ipsj.ixsq.nii.ac.jp:02000738,
 author = {福田,豊 and 中村,豊 and 佐藤,彰洋 and 和田,数字郎 and Yutaka Fukuda and Yutaka Nakamura and Akihiro Satoh and Sujiro Wada},
 issue = {52},
 month = {Feb},
 note = {九州工業大学は2024年度に全学セキュア・ネットワーク(Kyutech Net)の更新を行った．今回は戸畑キャンパスにEVPN-VXLAN (Ethernet Virtual Private Network - Virtual eXtensible Local Area Network)を導入し，全キャンパスのフロアスイッチからコアスイッチ，境界及びキャンパスファイアーウォール，そして仮想基盤とその上で稼働する運用管理システムを更新した．更新に向けた検討は2021年ごろより開始したが，前回の更新(2019年9月)よりも円安や物価高が進んだため，これまで整備してきた既存システム全てを更新することは不可能であった．一方でスイッチは導入後10年が経過しており増速のため全体更新は必須であった．そこで限られた予算の中で効果的な更新を行うための設計指針を策定し，指針に基づいて更新するものと運用を延長するものとを分け，更新対象には指針から要求要件を定めて仕様書を策定し，導入を行った．本稿では，定めた設計指針と，それに基づく要求要件と仕様書の作成，実際の導入と今後の課題について報告する．, Kyushu Institute of Technology had upgraded the campus network (”Kyutech Network”) in September 2024. In this project, EVPN-VXLAN (Ethernet Virtual Private Network - Virtual eXtensible Local Area Network) was installed at the Tobata Campus. In addition, all campus switches from the floor to the core, both boundary and campus firewall, as well as operation and management systems running on the virtual infrastructure were also updated. Consideration for the renewal began around 2022, but due to the depreciation of the yen and higher prices from the previous replacement (September 2019), it was not possible to update all of the existing systems that had been in place. The network switches, on the other hand, had been installed for 10 years and must be replaced in order to increase the speed of the system. Thus, we determined the renewal target based on the guideleines which we designed for effective upgrading, and specified the requirements from the guidelines, and installed them. This paper reports on the design guidelines considered, requirements and specifications based on the guidelines, actual instllation, and future issues.},
 title = {九州工業大学における全学セキュア・ネットワーク(Kyutech Net)の更新(2024)},
 year = {2025}
}