{"id":1447,"date":"2025-10-29T00:53:36","date_gmt":"2025-10-28T15:53:36","guid":{"rendered":"https:\/\/mylifeisbeautiful555.net\/?page_id=1447"},"modified":"2025-10-29T02:17:00","modified_gmt":"2025-10-28T17:17:00","slug":"ospf%e3%81%ae%e5%9f%ba%e6%9c%ac%e5%8b%95%e4%bd%9c","status":"publish","type":"page","link":"https:\/\/mylifeisbeautiful555.net\/?page_id=1447","title":{"rendered":"OSPF\u306e\u57fa\u672c\u52d5\u4f5c"},"content":{"rendered":"\n

OSPF\uff08Open Shortest Path First\uff09<\/strong> \u306f\u3001\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8\u578b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4ee3\u8868\u683c\u3067\u3001
LAN\u30fbWAN\u3092\u542b\u3080\u4e2d\u301c\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u308f\u308c\u308bIGP\uff08Interior Gateway Protocol\uff09\u3067\u3059\u3002<\/p>\n\n\n\n

\u57fa\u672c\u52d5\u4f5c<\/h2>\n\n\n\n

1. Hello\u30d1\u30b1\u30c3\u30c8\u3067\u96a3\u63a5\u30eb\u30fc\u30bf\u3092\u767a\u898b<\/h2>\n\n\n\n
    \n
  • \u5404OSPF\u30eb\u30fc\u30bf\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3054\u3068\u306bHello\u30d1\u30b1\u30c3\u30c8<\/strong>\u3092\u5b9a\u671f\u7684\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/li>\n\n\n\n
  • Hello\u30d1\u30b1\u30c3\u30c8\u306e\u4e2d\u306b\u306f\u4ee5\u4e0b\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\uff1a\n
      \n
    • \u30eb\u30fc\u30bfID<\/li>\n\n\n\n
    • Hello\uff0fDead\u30bf\u30a4\u30de\u30fc<\/li>\n\n\n\n
    • \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30b9\u30af<\/li>\n\n\n\n
    • \u8a8d\u8a3c\u60c5\u5831<\/li>\n\n\n\n
    • Area ID \u306a\u3069<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

      ➡ \u3053\u308c\u3089\u306e\u6761\u4ef6\u304c\u4e00\u81f4\u3057\u305f\u96a3\u306e\u30eb\u30fc\u30bf\u540c\u58eb\u304c\u3001Neighbor\uff08\u96a3\u63a5\u95a2\u4fc2\uff09<\/strong>\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

      2. \u96a3\u63a5\u95a2\u4fc2\u306e\u78ba\u7acb<\/h2>\n\n\n\n
        \n
      • Hello\u306e\u3084\u308a\u53d6\u308a\u304c\u6210\u529f\u3059\u308b\u3068\u3001\u30eb\u30fc\u30bf\u540c\u58eb\u306f\u30cd\u30a4\u30d0\u30fc\u95a2\u4fc2<\/strong>\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002<\/li>\n\n\n\n
      • OSPF\u306e\u30cd\u30a4\u30d0\u30fc\u72b6\u614b\u307e\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u9032\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n
        \u72b6\u614b<\/th>\u5185\u5bb9<\/th><\/tr><\/thead>
        Down<\/td>\u307e\u3060Hello\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u306a\u3044<\/td><\/tr>
        Init<\/td>\u76f8\u624b\u306eHello\u3092\u53d7\u3051\u53d6\u3063\u305f<\/td><\/tr>
        2-Way<\/td>\u53cc\u65b9\u5411\u901a\u4fe1\u304c\u78ba\u8a8d\u3055\u308c\u305f\uff08DR\u9078\u51fa\u5b8c\u4e86\uff09<\/td><\/tr>
        ExStart<\/td>LSA\u4ea4\u63db\u306e\u6e96\u5099<\/td><\/tr>
        Exchange<\/td>LSA\u30d8\u30c3\u30c0\u3092\u4ea4\u63db<\/td><\/tr>
        Loading<\/td>LSA\u306e\u5185\u5bb9\u3092\u8981\u6c42\u30fb\u53d7\u4fe1<\/td><\/tr>
        Full<\/td>\u540c\u671f\u5b8c\u4e86\uff08\u96a3\u63a5\u78ba\u7acb\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        3. DR\/BDR\u306e\u9078\u51fa<\/h2>\n\n\n\n
          \n
        • \u30bb\u30b0\u30e1\u30f3\u30c8\u4e0a\u306b\u8907\u6570\u30eb\u30fc\u30bf\u304c\u3042\u308b\u5834\u5408\u3001\u901a\u4fe1\u91cf\u3092\u6e1b\u3089\u3059\u305f\u3081\u306b\u6b21\u3092\u9078\u51fa\u3057\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n
          \u5f79\u5272<\/th>\u8aac\u660e<\/th><\/tr><\/thead>
          DR\uff08Designated Router\uff09<\/strong><\/td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u4ee3\u8868\u3002LSA\u3092\u4e2d\u7d99\u3059\u308b\u4e2d\u5fc3\u3002<\/td><\/tr>
          BDR\uff08Backup DR\uff09<\/strong><\/td>DR\u304c\u843d\u3061\u305f\u3068\u304d\u306e\u4e88\u5099\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

          \u9078\u51fa\u57fa\u6e96\u306f\uff1a<\/p>\n\n\n\n

            \n
          1. OSPF\u30d7\u30e9\u30a4\u30aa\u30ea\u30c6\u30a3\uff08ip ospf priority<\/code>\uff09\u304c\u9ad8\u3044\u30eb\u30fc\u30bf<\/li>\n\n\n\n
          2. \u540c\u3058\u306a\u3089Router ID\u304c\u5927\u304d\u3044\u65b9<\/li>\n<\/ol>\n\n\n\n

            4. LSA\u4ea4\u63db➡LSDB\u69cb\u7bc9➡\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u56f3\u306e\u4f5c\u6210<\/mark><\/h2>\n\n\n\n
              \n
            • \u96a3\u63a5\u30eb\u30fc\u30bf\u306f\u3001\u304a\u4e92\u3044\u306e\u30ea\u30f3\u30af\u60c5\u5831\u3092 LSA\uff08Link State Advertisement\uff09<\/strong> \u3068\u3057\u3066\u4ea4\u63db\u3057\u307e\u3059\u3002<\/li>\n\n\n\n
            • LSA\u3092\u5168\u30eb\u30fc\u30bf\u306b\u30d5\u30e9\u30c3\u30c7\u30a3\u30f3\u30b0<\/strong>\uff08\u6d2a\u6c34\u306e\u3088\u3046\u306b\u914d\u5e03\uff09\u3057\u3001
              \u3000\u7d50\u679c\u3068\u3057\u3066\u5404\u30eb\u30fc\u30bf\u306f\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30c3\u30d7\uff08LSDB<\/strong>\uff09\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n

              5. SPF\u30c4\u30ea\u30fc\u306e\u4f5c\u6210➡\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3078\u306e\u767b\u9332<\/mark><\/h2>\n\n\n\n
                \n
              • \u5404\u30eb\u30fc\u30bf\u306fLSDB\u3092\u3082\u3068\u306b\u3001SPF\u8a08\u7b97(Dijkstra\uff08\u30c0\u30a4\u30af\u30b9\u30c8\u30e9\uff09\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/strong>)\u3092\u5b9f\u884c\u3057\u3001SPF\u30c4\u30ea\u30fc\uff08\u6700\u77ed\u7d4c\u8def\u30c4\u30ea\u30fc\uff09<\/strong> \u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n
              • \u5b9b\u5148\u307e\u3067\u306e\u6700\u77ed\u7d4c\u8def\u3092\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\uff08RIB\uff09\u306b\u767b\u9332<\/strong>\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n

                6. \u7d4c\u8def\u5909\u66f4\u6642\u306e\u518d\u8a08\u7b97\uff08\u9ad8\u901f\u53ce\u675f\uff09<\/h2>\n\n\n\n
                  \n
                • \u30ea\u30f3\u30af\u969c\u5bb3\u3084\u65b0\u898f\u30eb\u30fc\u30bf\u306e\u8ffd\u52a0\u304c\u767a\u751f\u3057\u305f\u3068\u304d\uff1a\n
                    \n
                  • \u969c\u5bb3\u3092\u691c\u51fa\u3057\u305f\u30eb\u30fc\u30bf\u304cLSA\u3092\u518d\u9001\u4fe1<\/strong><\/li>\n\n\n\n
                  • \u5404\u30eb\u30fc\u30bf\u304c\u65b0\u3057\u3044LSDB\u3092\u69cb\u7bc9<\/li>\n\n\n\n
                  • \u518d\u3073SPF\u8a08\u7b97\u3092\u5b9f\u65bd<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                    ➡ \u3053\u306e\u305f\u3081\u3001OSPF\u306f\u9ad8\u901f\u306b\u7d4c\u8def\u3092\u518d\u8a08\u7b97\uff08\u53ce\u675f\uff09\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

                    \u307e\u3068\u3081<\/h2>\n\n\n\n
                    \u9805\u76ee<\/th>\u5185\u5bb9<\/th><\/tr><\/thead>
                    \u7a2e\u985e<\/td>\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8\u578bIGP<\/td><\/tr>
                    \u7d4c\u8def\u60c5\u5831\u5358\u4f4d<\/td>LSA\uff08Link State Advertisement\uff09<\/td><\/tr>
                    \u7d4c\u8def\u8a08\u7b97<\/td>SPF\uff08Dijkstra\uff09\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/td><\/tr>
                    \u7d4c\u8def\u9078\u629e\u57fa\u6e96<\/td>\u30b3\u30b9\u30c8\uff08\u5e2f\u57df\u5e45\u306b\u57fa\u3065\u304f\uff09<\/td><\/tr>
                    \u512a\u308c\u305f\u70b9<\/td>\u9ad8\u901f\u53ce\u675f\u30fb\u30eb\u30fc\u30d7\u9632\u6b62\u30fb\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb<\/td><\/tr>
                    \u6ce8\u610f\u70b9<\/td>\u30e1\u30e2\u30ea\u30fbCPU\u8ca0\u8377\u304c\u9ad8\u3044\uff0f\u8a2d\u8a08\u8981\u7d20\u304c\u591a\u3044\uff08\u30a8\u30ea\u30a2\u8a2d\u8a08\u306a\u3069\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                    <\/p>\n","protected":false},"excerpt":{"rendered":"

                    OSPF\uff08Open Shortest Path First\uff09 \u306f\u3001\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8\u578b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4ee3\u8868\u683c\u3067\u3001LAN\u30fbWAN\u3092\u542b\u3080\u4e2d\u301c\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u308f\u308c\u308bIGP\uff08Interior Gateway Proto […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1447","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1447"}],"version-history":[{"count":9,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1447\/revisions"}],"predecessor-version":[{"id":1469,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1447\/revisions\/1469"}],"wp:attachment":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}