@techreport{oai:ipsj.ixsq.nii.ac.jp:00204533,
 author = {高田, 篤 and 林, 直輝 and 中村, 瑞人 and 丹治, 直幸 and 関登, 志彦 and 山越, 恭子 and Atsushi, Takada and Naoki, Hayashi and Mizuto, Nakamura and Naoyuki, Tanji and Toshihiko, Seski and Kyoko, Yamagoe},
 issue = {1},
 month = {May},
 note = {通信事業者のサービス保守業務では，装置の故障発生時に，迅速かつ正確な影響範囲の把握や故障箇所の特定が求められる．これらの実現には，ネットワーク装置間の接続関係を示すトボロジの正確な情報が必要となる．しかし，通信事業者のネットワークは装置数が数十万台存在し，日々の工事や故障対応でトポロジの追加，変更も頻繁に発生する．加えて，すべてのトポロジの追加，変更の記録を自動化することは難しい．そのため，誤ったトポロジ情報が混入してしまう問題があり，ネットワークにおけるトポロジの現況を検出する技術が必要である．本稿では，工事や故障が発生した際に，装置が発出する警報情報を用いて装置間のトポロジを検出可能にする手法を提案する．また，商用の一部構成（特定のルータの区間）において発生した警報情報を用いて提案手法を評価し，1 日で全体の 1.7％のみではあるがトポロジを 100％の糖度で検出可能であることを確腿した．, In service operation of telecommunications carriers, when a equipment failure occurs, it is necessary to quickly grasp the service impact  and isolate root cause of the failure. In order to realize these, accurate information of topology showing connection relation between network equipments are required. However, the network of a telecommunications carrier has hundreds of thousands of equipments, and topology changes frequently occur dueto daily construction and troubleshooting. In addition, it is difficult to automate the recording of all these topology changes. Therefore, it is difficult to keep the topology information correctly, and it brings a need for an automated solution to discover the network connectivities.. In this paper, we propose a method that can discover thetopology between equipments with the alarm information issued by the equipments during construction and equipments fail. In addition, we evaluated the proposed method using alarm information generated by specific types of commercial equipment, and confirmed that 1.6% of the total topology could be detected with 100% accuracy in one day.},
 title = {警報を活用した通信事業者ネットワークにおけるトポロジ検出技術},
 year = {2020}
}