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          <dc:title>マルチホーム環境におけるDNS応答の多重化による自組織宛メール配送の動的経路選択手法</dc:title>
          <dc:title xml:lang="en">A Dynamic Route Selection Method Using Multiple DNS Replies for Inbound E-mail Delivery on Multihomed Environment</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName>金勇</jpcoar:creatorName>
            <jpcoar:creatorName>山井, 成良</jpcoar:creatorName>
            <jpcoar:creatorName>岡山, 聖彦</jpcoar:creatorName>
            <jpcoar:creatorName>清家, 巧</jpcoar:creatorName>
            <jpcoar:creatorName>中村, 素典</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Yong, Jin</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Nariyoshi, Yamai</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Kiyohiko, Okayama</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Takumi, Seike</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Motonori, Nakamura</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:subject subjectScheme="Other">特集：多様なネットワークサービスの統合・連携に向けたインターネットと運用管理技術</jpcoar:subject>
          <datacite:description descriptionType="Other">電子メールにおいて処理能力や耐障害性の向上を実現する方法として，マルチホームネットワークが注目されている．マルチホームネットワークを効率良く利用するにはネットワークの構成や利用状況に応じて適切な経路を選択する必要がある．しかし，従来の経路選択手法ではネットワークの構成を考慮しないため，必ずしも適切な経路が選択されなかったり，ネットワークの利用状況に応じた動的なトラフィック分散ができなかったりするなどの問題があった．そこで本論文では自組織宛メール配送を対象とした動的経路選択手法を提案する．本手法では配送時に行われるDNS（Domain Name System）サーバへの問合せに対して内容の異なる応答を複数の経路から同時に返送し，最初に応答が到着した経路を選択させる．これによりネットワークの構成や利用状況に応じた適切な経路を選択でき，また障害が発生している経路を自動的に迂回することが可能になる．</datacite:description>
          <datacite:description descriptionType="Other">As a way to improve throughput and fault tolerance of E-mail system, multihomed network is taken into account. To take full advantage of multihomed network, it is required to conduct proper route selection based on topology and utilization statistics of network. However, most conventional operation schemes have some issues such that do not perform appropriate route selection nor dynamic traffic balancing since they do not take network topology into account. In this paper, we propose a dynamic route selection method for inbound e-mail delivery. In this method, different replies corresponding to a DNS (Domain Name System) query launched right before e-mail delivery are sent back simultaneously through multiple routes and the one through which the first arrived reply was delivered is selected for e-mail delivery. With this method, an appropriate route based on the topology and utilization statistics of network can be selected for inbound e-mail delivery. Furthermore, unavailable routes with failure can be avoided automatically as well.</datacite:description>
          <datacite:date dateType="Issued">2010-03-15</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">journal article</dc:type>
          <jpcoar:identifier identifierType="URI">https://ipsj.ixsq.nii.ac.jp/records/68721</jpcoar:identifier>
          <jpcoar:sourceIdentifier identifierType="ISSN">1882-7764</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="NCID">AN00116647</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle>情報処理学会論文誌</jpcoar:sourceTitle>
          <jpcoar:volume>51</jpcoar:volume>
          <jpcoar:issue>3</jpcoar:issue>
          <jpcoar:pageStart>998</jpcoar:pageStart>
          <jpcoar:pageEnd>1007</jpcoar:pageEnd>
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            <datacite:date dateType="Available">2012-03-15</datacite:date>
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