{"id":1005,"date":"2023-07-25T23:24:36","date_gmt":"2023-07-25T14:24:36","guid":{"rendered":"http:\/\/daimaru-tech-blog.com\/?p=1005"},"modified":"2025-07-05T12:21:45","modified_gmt":"2025-07-05T03:21:45","slug":"%e3%80%90%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e5%9f%ba%e7%a4%8e%e3%83%bb%e5%85%a5%e9%96%80%e3%80%91stp-rstp%e3%82%92%e5%be%a9%e7%bf%92%e3%81%ae%e3%81%9f%e3%82%81%e3%81%ab%e5%b0%91","status":"publish","type":"post","link":"https:\/\/daimaru-tech-blog.com\/?p=1005","title":{"rendered":"\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u57fa\u790e\u30fb\u5165\u9580\u3011STP\/RSTP\u3092\u5fa9\u7fd2\u306e\u305f\u3081\u306b\u5c11\u3057\u6df1\u6398\u308a\u3057\u3066\u307f\u305f\uff08CCNA\uff09\uff08\u8aad\u4e86\u76ee\u5b89\uff1a5min~10min\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>\u3000\u3053\u3093\u306b\u3061\u306f\u3002<strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker mark_blue\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u300c\u3060\u3044\u307e\u308b\u300d<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4eca\u56de\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u672c\u4e2d\u306e\u57fa\u672c\u3068\u306a\u308b<strong><span class=\"swl-inline-color has-swl-deep-03-color\"><span class=\"swl-marker mark_green\">Spanning Tree Protocol\uff08STP\uff09\u3068\u9ad8\u901f\u53ce\u675f\u304c\u53ef\u80fd\u306aRapid-STP\uff08RSTP\uff09<\/span><\/span><\/strong>\u306b\u3064\u3044\u3066\u3001<strong>\u5fa9\u7fd2\u3068\u6df1\u6398\u308a\u3092\u517c\u306d\u3066\u307e\u3068\u3081\u3066\u3044\u304d\u305f\u3044<\/strong>\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4eca\u56de\u306f\u3001\u590f\u4f11\u307f\u30b7\u30fc\u30ba\u30f3\u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u3001\u5bb6\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5c11\u3057\u3067\u3082\u9ad8\u3081\u308b\u305f\u3081\u306e\u30b9\u30de\u30fc\u30c8\u30db\u30fc\u30e0\u306b\u95a2\u3059\u308b\u5e83\u544a\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<center><iframe src=\"https:\/\/rcm-fe.amazon-adsystem.com\/e\/cm?o=9&amp;p=48&amp;l=ur1&amp;category=smarthome&amp;banner=1P78CCD9E2WJGXNG1HR2&amp;f=ifr&amp;linkID=1ba4dcc2713fbfce26807e261eb485ca&amp;t=daikiyamada-22&amp;tracking_id=daikiyamada-22\" width=\"728\" height=\"90\" scrolling=\"no\" border=\"0\" marginwidth=\"0\" style=\"border:none;\" frameborder=\"0\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-top-navigation-by-user-activation\"><\/iframe><\/center>\n\n\n\n<h2 class=\"wp-block-heading\">STP\uff08Spanning Tree Protocol\uff09\u3068\u306f<\/h2>\n\n\n\n<p><span class=\"swl-inline-color has-swl-deep-02-color\">\u3000<strong>STP\uff08Spanning Tree Protocol\uff09<\/strong><\/span>\u3068\u306f\u3001<strong><span class=\"swl-inline-color 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display<\/text><\/a><\/switch><\/svg>\n\n\n\n<p>\u4f59\u8ac7\u3067\u3059\u304c\u30b9\u30d1\u30cb\u30f3\u30b0\u30c4\u30ea\u30fc\u3068\u306f\u30b0\u30e9\u30d5\u7406\u8ad6\u3067\u51fa\u3066\u304f\u308b\u7528\u8a9e\u306e\uff11\u3064\u3067\u3042\u308a\u3001\u5168\u57df\u6728\u3068\u3082\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u5168\u57df\u6728\u3068\u306f\u30b0\u30e9\u30d5\u306b\u5b58\u5728\u3059\u308b\u9802\u70b9\uff08\u30ce\u30fc\u30c9\uff1a\u30eb\u30fc\u30bf\u30fb\u30b9\u30a4\u30c3\u30c1\uff09\u3092\u3059\u3079\u3066\u4f7f\u3063\u305f\u6728\uff08\u9589\u8def\uff1a\u30b5\u30a4\u30af\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\uff09\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-inline-color has-swl-deep-03-color\"><span class=\"swl-marker mark_green\">\u30b0\u30e9\u30d5\u7406\u8ad6\u3084\u7d44\u307f\u5408\u308f\u305b\u6700\u9069\u5316\u554f\u984c\u3092\u52c9\u5f37\u3059\u308b\u3053\u3068\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u5229\u7528\u3055\u308c\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/span><\/span><\/strong>\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u79c1\u304c\u5b66\u751f\u6642\u4ee3\u306b\u4f7f\u3063\u3066\u3044\u305f\u6559\u6750\u3092\u7d39\u4ecb\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30b0\u30e9\u30d5\u7406\u8ad6 [ \u5c71\u4e0b\u3000\u767b\u8302\u7d00 ]\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/book\\\/cabinet\\\/7564\",\"p\":[\"\\\/9784621307564_1_2.jpg\",\"\\\/9784621307564_2.jpg\",\"\\\/9784621307564_3.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/book\\\/17269555\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#f79256\",\"u_url\":\"https:\\\/\\\/www.amazon.co.jp\\\/%E3%82%B0%E3%83%A9%E3%83%95%E7%90%86%E8%AB%96-%E5%B1%B1%E4%B8%8B-%E7%99%BB%E8%8C%82%E7%B4%80\\\/dp\\\/4621307568?__mk_ja_JP=%E3%82%AB%E3%82%BF%E3%82%AB%E3%83%8A\\u0026crid=2RSJZXMJT5278\\u0026keywords=%E3%82%B0%E3%83%A9%E3%83%95%E7%90%86%E8%AB%96\\u0026qid=1690243042\\u0026sprefix=%E3%82%B0%E3%83%A9%E3%83%95%E7%90%86%E8%AB%96%2Caps%2C282\\u0026sr=8-1\\u0026linkCode=ll1\\u0026tag=daikiyamada-22\\u0026linkId=a96ad283bb96d2aadce0bb1f30d06f8d\\u0026language=ja_JP\\u0026ref_=as_li_ss_tl\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":0},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/book\\\/17269555\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":1}],\"eid\":\"Bqc74\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-Bqc74\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END -->\n<\/center>\n\n\n\n<h3 class=\"wp-block-heading\">STP\u306e\u7406\u89e3\u306b\u306f\u6b20\u304b\u305b\u306a\u3044BPDU\u30e1\u30c3\u30bb\u30fc\u30b8<\/h3>\n\n\n\n<p>\u3000STP\u306e\u6982\u8981\u304c\u7406\u89e3\u3067\u304d\u305f\u3068\u3053\u308d\u3067BPDU\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>BPDU\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001STP\u306b\u95a2\u9023\u3059\u308b\u60c5\u5831\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u305f\u3081\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001STP\u306eRoot ID\u3084Path Cost\u3001\u30d6\u30ea\u30c3\u30b8ID\u306a\u3069\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-black-color has-swl-pale-04-background-color has-text-color has-background\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>Bit\u6570<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u7528\u9014<\/td><\/tr><tr><td><span class=\"swl-inline-color has-black-color\">\u5b9b\u5148<\/span><\/td><td>48bit<\/td><td>\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\uff080180.C200.000\uff09<\/td><\/tr><tr><td>Protocol ID<\/td><td>16bit<\/td><td>STP\uff1a0\u3000RSTP\uff1a2<\/td><\/tr><tr><td>Version<\/td><td>8bit<\/td><td>STP\uff1a0 \u3000RSTP\uff1a2<\/td><\/tr><tr><td>Message Types<\/td><td>8bit<\/td><td>\u30fb\u901a\u5e38BPDU\uff1a0x00<br>\u30fb\u5909\u66f4\u6642BPDU\uff1a0x80<\/td><\/tr><tr><td>Flags<\/td><td>8bit<\/td><td>\u30c8\u30dd\u30ed\u30b8\u5909\u66f4\u3084\u78ba\u8a8d\u5fdc\u7b54\u3092\u8868\u3059\u60c5\u5831<\/td><\/tr><tr><td>Root ID<\/td><td>64bit<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u306e\u30d6\u30ea\u30c3\u30b8ID<\/td><\/tr><tr><td>Path Cost<\/td><td>32bit<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u306b\u5230\u9054\u3059\u308b\u307e\u3067\u306e\u7d2f\u7a4d\u30b3\u30b9\u30c8<\/td><\/tr><tr><td>Bridge ID<\/td><td>32bit<\/td><td>\u30b9\u30a4\u30c3\u30c1\u81ea\u8eab\u306e\u30d6\u30ea\u30c3\u30b8ID<\/td><\/tr><tr><td>Port ID<\/td><td>16bit<\/td><td>\u30dd\u30fc\u30c8\u30d7\u30e9\u30a4\u30aa\u30ea\u30c6\u30a3\u3068\u30dd\u30fc\u30c8\u756a\u53f7<\/td><\/tr><tr><td>Message Age<\/td><td>16bit<\/td><td>BPDU\u3092\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u304c\u4f5c\u6210\u3057\u3066\u304b\u3089\u306e\u30db\u30c3\u30d7\u30ab\u30a6\u30f3\u30c8<\/td><\/tr><tr><td>Max Age<\/td><td>16bit<\/td><td>BPDU\u306e\u6700\u5927\u4fdd\u6301\u6642\u9593\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff1a20\u79d2\uff09<\/td><\/tr><tr><td>Hello Time<\/td><td>16bit<\/td><td>BPDU\u306e\u9001\u4fe1\u9593\u9694\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff1a2\u79d2\uff09<\/td><\/tr><tr><td>Forward Delay<\/td><td>16bit<\/td><td>Listening\/Learning\u72b6\u614b\u306b\u3068\u3069\u307e\u308b\u6642\u9593\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff1a15\u79d2\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3000\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092CML\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u89b3\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"501\" height=\"449\" src=\"http:\/\/daimaru-tech-blog.com\/wp-content\/uploads\/2023\/07\/image.png\" alt=\"\" class=\"wp-image-1007\"\/><\/figure>\n\n\n\n<p>\u3000<strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker mark_blue\">\u4e0a\u8a18\u306e\u30d1\u30b1\u30c3\u30c8\u306e\u4e2d\u8eab\u306b\u3082\u3042\u308b\u901a\u308a\u3001\u57fa\u672c\u7684\u306a\u5024\u306f\u5168\u3066\u60f3\u5b9a\u901a\u308a\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">STP\u306e\u69cb\u6210\u3092\u6c7a\u3081\u308b\u306e\u306f\u30d6\u30ea\u30c3\u30b8ID\u3068\u30d1\u30b9\u30b3\u30b9\u30c8<\/h3>\n\n\n\n<p>\u3000\u6b21\u306bSTP\u306e\u69cb\u6210\u3092\u6c7a\u5b9a\u3059\u308b\u30d6\u30ea\u30c3\u30b8ID\u3068\u30d1\u30b9\u30b3\u30b9\u30c8\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30d6\u30ea\u30c3\u30b8ID<\/h4>\n\n\n\n<p>\u3000\u30d6\u30ea\u30c3\u30b8ID\u3068\u306f\u3001STP\u3067\u5229\u7528\u3059\u308bL2SW\u306eID\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306eID\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u4e0b\u306e\u56f3\u306b\u3082\u3042\u308b\u901a\u308a<strong>Priority\u304c16bit\u30fbMAC\u30a2\u30c9\u30ec\u30b9\u304c48bit<\/strong>\u3068\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"810\" height=\"151\" src=\"http:\/\/daimaru-tech-blog.com\/wp-content\/uploads\/2023\/07\/image-2.png\" alt=\"\" class=\"wp-image-1027\"\/><\/figure>\n\n\n\n<p>\u3000\u3053\u306e\u30d6\u30ea\u30c3\u30b8ID\u306e<strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker mark_blue\">\u6700\u5c0f\u5024\u3092\u6301\u3064L2SW\u304cSTP\u306e\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8<\/span><\/span><\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30d6\u30ea\u30c3\u30b8ID\u304c\u540c\u3058\u5834\u5408\u306e\u512a\u5148\u5ea6\u306f<strong>\u30d7\u30e9\u30a4\u30aa\u30ea\u30c6\u30a3\u304c\u5c0f\u3055\u3044L2SW\u304c\u512a\u5148\u5ea6\u9ad8\u3068\u306a\u308a\u3001\u30d7\u30e9\u30a4\u30aa\u30ea\u30c6\u30a3\u3082\u540c\u4e00\u306e\u5834\u5408\u306fMAC\u30a2\u30c9\u30ec\u30b9\u3092\u6bd4\u8f03\u3057\u3001\u5c0f\u3055\u3044MAC\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u65b9\u304c\u512a\u5148\u5ea6\u304c\u9ad8\u304f<\/strong>\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u30d6\u30ea\u30c3\u30b8ID\u3092\u69cb\u6210\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\uff11\u3064\u3067\u3042\u308b<strong><span class=\"swl-inline-color has-swl-deep-03-color\"><span class=\"swl-marker mark_green\">Priority\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u304c32768\u3068\u306a\u3063\u3066\u304a\u308a\u30014096\u306e\u500d\u6570\u3092\u6307\u5b9a\u3059\u308b\u6c7a\u307e\u308a<\/span><\/span><\/strong>\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3061\u306a\u307f\u306b\u3001\u5148\u307b\u3069\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u4e2d\u8eab\u306b\u3082\u30d6\u30ea\u30c3\u30b8ID\u306f\u8a18\u8f09\u304c\u3042\u308b\u306e\u3067\u3054\u78ba\u8a8d\u3044\u305f\u3060\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001Cisco IOS\u4e0a\u3067\u306e\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u306f\u3001Priority\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3092\u597d\u304d\u306aL2SW\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\uff08\u8a2d\u5b9a\u30b3\u30de\u30f3\u30c9\uff09\n(config)#spanning-tree vlan &lt;VLAN ID&gt; priority &lt;Priority\u5024&gt; \u203b4096\u306e\u500d\u6570<\/code><\/pre>\n\n\n\n<p>\u3000\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u306b\u3057\u305f\u3044\u3068\u304d\u306f\u3001\u3053\u306ePriority\u5024\u3092\u300c0\u300d\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30d1\u30b9\u30b3\u30b9\u30c8<\/h4>\n\n\n\n<p>\u3000<strong><span class=\"swl-inline-color has-swl-deep-04-color\"><span class=\"swl-marker mark_orange\">\u30d1\u30b9\u30b3\u30b9\u30c8\u306fSTP\u306e\u69cb\u6210\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3059\u308b\u30b3\u30b9\u30c8<\/span><\/span><\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u306f\u3001\u5e2f\u57df\u5e45\u306b\u3088\u308a\u6c7a\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-black-color has-swl-pale-04-background-color has-text-color has-background\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u5e2f\u57df\u5e45<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u30b3\u30b9\u30c8\u5024<\/td><\/tr><tr><td><span class=\"swl-inline-color has-black-color\">10Gbps<\/span><\/td><td>2<\/td><\/tr><tr><td>1Gbps<\/td><td>4<\/td><\/tr><tr><td>100Mbps<\/td><td>19<\/td><\/tr><tr><td>10Mbps<\/td><td>100<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3000\u3053\u306e\u5024\u306f\u3001\u5f8c\u307b\u3069\u30dd\u30fc\u30c8\u7a2e\u5225\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3059\u308b\u5024\u306b\u306a\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker mark_blue\">Cisco IOS\u3067\u306fIF\u8a2d\u5b9a\u306e\u914d\u4e0b\u306bcost\u5024\u3092\u5165\u529b\u3059\u308b\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\uff08\u8a2d\u5b9a\u30b3\u30de\u30f3\u30c9\uff09\n(config-if)#spanning-tree cost &lt;cost\u5024&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30dd\u30fc\u30c8\u7a2e\u5225<\/h3>\n\n\n\n<p>\u3000\u3053\u3053\u307e\u3067\u8aac\u660e\u3057\u3066\u304d\u305f\u30d6\u30ea\u30c3\u30b8ID\u3068\u30d1\u30b9\u30b3\u30b9\u30c8\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u30dd\u30fc\u30c8\u7a2e\u5225\u304c\u6c7a\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-black-color has-swl-pale-04-background-color has-text-color has-background\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u30dd\u30fc\u30c8\u7a2e\u5225<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u6c7a\u5b9a\u30eb\u30fc\u30eb<\/td><\/tr><tr><td>\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\uff08Root Port\uff1aRP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3078\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u304c\u6700\u5c0f\u5024\u3068\u306a\u308b\u30dd\u30fc\u30c8<br>\u2460\u975e\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u306e\u307f<br>\u2461\u5404\u30dd\u30fc\u30c8\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u2192\u9001\u4fe1\u5143\u30d6\u30ea\u30c3\u30b8ID\u2192\u9001\u4fe1\u5143\u30dd\u30fc\u30c8ID<\/td><\/tr><tr><td>\u6307\u5b9a\u30dd\u30fc\u30c8\uff08Desginated Port\uff1aDP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3078\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u304c\u6700\u5c0f\u5024\u3068\u306a\u308b\u30dd\u30fc\u30c8<br>\u2460\u5404\u30ea\u30f3\u30af\u3054\u3068\u306b\uff11\u30dd\u30fc\u30c8\u9078\u51fa<br>\u2461\u5404\u30b9\u30a4\u30c3\u30c1\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u2192\u9001\u4fe1\u5143\u30d6\u30ea\u6642ID\u2192\u9001\u4fe1\u5143\u30dd\u30fc\u30c8ID<\/td><\/tr><tr><td>\u975e\u6307\u5b9a\u30dd\u30fc\u30c8\uff08Non Desginated Port\uff1aNDP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\u3068\u6307\u5b9a\u30dd\u30fc\u30c8\u4ee5\u5916\u306e\u30dd\u30fc\u30c8\uff08\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u30dd\u30fc\u30c8\uff09<br>\u203b\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u306f\u3057\u306a\u3044\u30dd\u30fc\u30c8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4e0b\u306e\u4f8b\u3092\u4f7f\u3063\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" 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xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 119px; height: 1px; padding-top: 384px; margin-left: 54px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">L2SW3<br \/>Priority\uff1a32768<\/div><\/div><\/div><\/foreignObject><text x=\"113\" y=\"389\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">L2SW3&#8230;<\/text><\/switch><\/g><rect x=\"559.25\" y=\"369\" width=\"120.5\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 119px; height: 1px; padding-top: 384px; margin-left: 560px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">L2SW4<br \/>Priority\uff1a32768<\/div><\/div><\/div><\/foreignObject><text x=\"620\" y=\"389\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">L2SW4&#8230;<\/text><\/switch><\/g><ellipse cx=\"112.75\" cy=\"91.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 92px; margin-left: 101px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"113\" y=\"95\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"171.5\" cy=\"61.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 62px; margin-left: 160px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"172\" y=\"65\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><rect x=\"0\" y=\"244\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 259px; margin-left: 1px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/div><\/div><\/div><\/foreignObject><text x=\"55\" y=\"263\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/text><\/switch><\/g><ellipse cx=\"631.5\" cy=\"101.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 102px; margin-left: 620px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"632\" y=\"105\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"571.5\" cy=\"56.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 57px; margin-left: 560px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"572\" y=\"60\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"161.5\" cy=\"356.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 357px; margin-left: 150px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"162\" y=\"360\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"101.5\" cy=\"291.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 292px; margin-left: 90px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"102\" y=\"295\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"631.5\" cy=\"291.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 292px; margin-left: 620px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"632\" y=\"295\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"554\" cy=\"359\" rx=\"15\" ry=\"15\" fill=\"#ff0000\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 359px; margin-left: 540px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">BP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"554\" y=\"363\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">BP<\/text><\/switch><\/g><rect x=\"449\" y=\"34\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 49px; margin-left: 450px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/div><\/div><\/div><\/foreignObject><text x=\"504\" y=\"53\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/text><\/switch><\/g><rect x=\"629\" y=\"244\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 259px; margin-left: 630px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a8<\/div><\/div><\/div><\/foreignObject><text x=\"684\" y=\"263\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a8<\/text><\/switch><\/g><\/g><switch><g requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\"\/><a transform=\"translate(0,-5)\" xlink:href=\"https:\/\/www.drawio.com\/doc\/faq\/svg-export-text-problems\" target=\"_blank\" rel=\"noopener\"><text text-anchor=\"middle\" font-size=\"10px\" x=\"50%\" y=\"100%\">Text is not SVG &#8211; cannot display<\/text><\/a><\/switch><\/svg>\n\n\n\n<p>L2SW1\u304cPriority 0\u3068\u3057\u3066\u6307\u5b9a\u3057\u3066\u3044\u308b\u305f\u3081\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>L2SW2\uff08Gi0\/1\uff09\u3068L2SW3\uff08Gi0\/0\uff09\u306f\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u304b\u3089\u6700\u5c0f\u30b3\u30b9\u30c8\u3068\u306a\u308b\u30dd\u30fc\u30c8\u306e\u305f\u3081\u3001\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\uff08RP\uff09\u3068\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>\u307e\u305f\u3001L2SW2\uff08Gi0\/0\uff09\u3068L2SW3\uff08Gi0\/1\uff09\u306f\u6307\u5b9a\u30dd\u30fc\u30c8\uff08DP\uff09\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001L2SW4\u5074\u304cRP\u3068\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\uff08L2SW2\u306e\u72b6\u614b\u78ba\u8a8d\uff09\nL2SW2#show spanning-tree vlan 2\n\nVLAN0002\n  Spanning tree enabled protocol rstp\n  Root ID    Priority    2\n             Address     5254.0009.652d\n             Cost        4\n             Port        2 (GigabitEthernet0\/1)\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n\n  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)\n             Address     5254.0007.55ed\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n             Aging Time  300 sec\n\nInterface           Role Sts Cost      Prio.Nbr Type\n------------------- ---- --- --------- -------- --------------------------------\nGi0\/0               Desg FWD 4         128.1    P2p\nGi0\/1               Root FWD 4         128.2    P2p\n\n\n\uff08L2SW3\u306e\u72b6\u614b\u78ba\u8a8d\uff09\nL2SW3#show spanning-tree vlan 2\n\nVLAN0002\n  Spanning tree enabled protocol rstp\n  Root ID    Priority    2\n             Address     5254.0009.652d\n             Cost        4\n             Port        1 (GigabitEthernet0\/0)\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n\n  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)\n             Address     5254.0009.be24\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n             Aging Time  300 sec\n\nInterface           Role Sts Cost      Prio.Nbr Type\n------------------- ---- --- --------- -------- --------------------------------\nGi0\/0               Root FWD 4         128.1    P2p\nGi0\/1               Desg FWD 4         128.2    P2p<\/code><\/pre>\n\n\n\n<p>L2SW4\u306fGi0\/0\u306f\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\uff08RP\uff09\u3068\u306a\u308a\u3001Gi0\/1\u304c\u975e\u6307\u5b9a\u30dd\u30fc\u30c8\uff08NDP\uff09\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-inline-color has-swl-deep-01-color\"><span class=\"swl-marker mark_orange\">\u305f\u3060\u3001\u72b6\u614b\u8868\u793a\u306e\u6642\u306fAlternative Port\uff08Altn\uff09\u3068\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\uff08L2SW4\u306e\u72b6\u614b\u78ba\u8a8d\uff09\nL2SW4#show spanning-tree vlan 2\n\nVLAN0002\n  Spanning tree enabled protocol rstp\n  Root ID    Priority    2\n             Address     5254.0009.652d\n             Cost        8\n             Port        1 (GigabitEthernet0\/0)\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n\n  Bridge ID  Priority    32770  (priority 32768 sys-id-ext 2)\n             Address     5254.0001.250c\n             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec\n             Aging Time  300 sec\n\nInterface           Role Sts Cost      Prio.Nbr Type\n------------------- ---- --- --------- -------- --------------------------------\nGi0\/0               Root FWD 4         128.1    P2p\nGi0\/1               Altn BLK 4         128.2    P2p<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30dd\u30fc\u30c8\u72b6\u614b<\/h3>\n\n\n\n<p> \u30dd\u30fc\u30c8\u7a2e\u5225\u3092\u307e\u3068\u3081\u305f\u5f8c\u306f\u3001\u5404\u30dd\u30fc\u30c8\u306e\u72b6\u614b\u3092\u8aac\u660e\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-black-color has-swl-pale-04-background-color has-text-color has-background\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u30dd\u30fc\u30c8\u72b6\u614b<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u8aac\u660e<\/td><\/tr><tr><td>Disable<\/td><td>Shutdown\u72b6\u614b<\/td><\/tr><tr><td>Blocking<\/td><td>BPDU\u306e\u53d7\u4fe1\u306e\u307f\u3067\u30c7\u30fc\u30bf\u8ee2\u9001\u306f\u306a\u3057\u3000\u203bMAC\u30a2\u30c9\u30ec\u30b9\u5b66\u7fd2\u306a\u3057<\/td><\/tr><tr><td>Listening<\/td><td>BPDU\u9001\u53d7\u4fe1\u4e2d\uff08\u30c7\u30fc\u30bf\u8ee2\u9001\u306a\u3057\u30fb\u30dd\u30fc\u30c8\u7a2e\u5225\u306e\u9078\u51fa\u30fb15\u79d2\uff09\u3000\u203bMAC\u30a2\u30c9\u30ec\u30b9\u5b66\u7fd2\u306a\u3057<\/td><\/tr><tr><td>Learning<\/td><td>BPDU\u9001\u53d7\u4fe1\u4e2d\uff08MAC\u30a2\u30c9\u30ec\u30b9\u5b66\u7fd2\u6e08\u30fb\u30c7\u30fc\u30bf\u8ee2\u9001\u306a\u3057\u30fb15\u79d2\uff09<\/td><\/tr><tr><td>Forwarding<\/td><td>\u30c7\u30fc\u30bf\u8ee2\u9001\u30fbMAC\u30a2\u30c9\u30ec\u30b9\u5b66\u7fd2\u6e08<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3000\u30dd\u30fc\u30c8\u72b6\u614b\u306e\u78ba\u8a8d\u306f\u3001\u5148\u7a0b\u306e\u78ba\u8a8d\u30b3\u30de\u30f3\u30c9\u3067\u78ba\u8a8d\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u4e0a\u3067\u3001\u72b6\u614b\u9077\u79fb\u306fDebug\u30ed\u30b0\u3092\u307f\u306a\u304c\u3089\u78ba\u8a8d\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u4f7f\u3063\u305f\u30c7\u30d0\u30c3\u30b0\u30b3\u30de\u30f3\u30c9\u306f\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>debug spanning-tree events\ndebug spanning-tree pvst+<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u3092\u5165\u529b\u5f8c\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>*Jul 24 10:23:31.939: set portid: VLAN0002 Gi0\/0: new port id 8001\n*Jul 24 10:23:31.939:  STP: PVST vlan 2 port Gi0\/0 created, ext id CF7CE60\n*Jul 24 10:23:31.939: STP: VLAN0002 Gi0\/0 -&gt; listening\n*Jul 24 10:23:31.939: setting bridge id (which=3) prio 32771 prio cfg 32768 sysid 3 (on) id 8003.5254.0001.250c1\n*Jul 24 10:23:33.253: STP: VLAN0002 heard root 32770-5254.0007.55ed on Gi0\/0\n*Jul 24 10:23:36.158: set portid: VLAN0002 Gi0\/1: new port id 8002\n*Jul 24 10:23:36.158:  STP: PVST vlan 2 port Gi0\/1 created, ext id CFDE318\n*Jul 24 10:23:36.158: STP: VLAN0002 Gi0\/1 -&gt; listening\n*Jul 24 10:23:37.942: STP: VLAN0002 Topology Change rcvd on Gi0\/0\n*Jul 24 10:23:46.939: STP: VLAN0002 Gi0\/0 -&gt; learning\n*Jul 24 10:23:51.158: STP: VLAN0002 Gi0\/1 -&gt; learning\n*Jul 24 10:24:01.939: STP&#91;2]: Generating TC trap for port GigabitEthernet0\/0\n*Jul 24 10:24:01.939: STP: VLAN0002 Gi0\/0 -&gt; forwarding\n*Jul 24 10:24:06.158: STP&#91;2]: Generating TC trap for port GigabitEthernet0\/1\n*Jul 24 10:24:06.158: STP: VLAN0002 Gi0\/1 -&gt; forwarding<\/code><\/pre>\n\n\n\n<p>\u3000\u3061\u306a\u307f\u306b\u3001\u72b6\u614b\u5909\u5316\u306e\u6642\u306f\u300cTopology Change Notification\u300d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u4e2d\u8eab\u306f\u3001BPDU\u30e1\u30c3\u30bb\u30fc\u30b8\u30bf\u30a4\u30d7\u304c\u300c0x80\u300d\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"630\" height=\"249\" src=\"http:\/\/daimaru-tech-blog.com\/wp-content\/uploads\/2023\/07\/image-1.png\" alt=\"\" class=\"wp-image-1012\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">RSTP\uff08Rapid-STP\uff09\u3068\u306f<\/h2>\n\n\n\n<p><strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker mark_blue\"> Rapid-STP\u3068\u306f\u540d\u524d\u306e\u901a\u308aSTP\u306e\u9ad8\u901f\u7248\u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">STP\u3068\u5909\u308f\u3063\u305f\u70b9<\/h3>\n\n\n\n<p>\u3000RSTP\u3068STP\u306e\u5909\u308f\u3063\u305f\u70b9\u306f\u30dd\u30fc\u30c8\u7a2e\u5225\u3068\u30dd\u30fc\u30c8\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30dd\u30fc\u30c8\u7a2e\u5225\uff08\u5909\u66f4\u70b9\u306e\u307f\uff09<\/h4>\n\n\n\n<p>\u3000RSTP\u306e\u30dd\u30fc\u30c8\u7a2e\u5225\u306f\u3001\u4ee5\u4e0b\u306e\u901a\u308a\uff14\u3064\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-black-color has-swl-pale-04-background-color has-text-color has-background\"><tbody><tr><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u30dd\u30fc\u30c8\u7a2e\u5225<\/td><td data-has-cell-bg=\"1\" data-text-color=\"white\"><span class=\"swl-cell-bg has-swl-deep-02-background-color\" data-text-color=\"white\" aria-hidden=\"true\">&nbsp;<\/span>\u6c7a\u5b9a\u30eb\u30fc\u30eb<\/td><\/tr><tr><td>\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\uff08Root Port\uff1aRP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3078\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u304c\u6700\u5c0f\u5024\u3068\u306a\u308b\u30dd\u30fc\u30c8<br>\u2460\u975e\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u306e\u307f<br>\u2461\u5404\u30dd\u30fc\u30c8\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u2192\u9001\u4fe1\u5143\u30d6\u30ea\u30c3\u30b8ID\u2192\u9001\u4fe1\u5143\u30dd\u30fc\u30c8ID<\/td><\/tr><tr><td>\u6307\u5b9a\u30dd\u30fc\u30c8\uff08Desginated Port\uff1aDP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30d6\u30ea\u30c3\u30b8\u3078\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u304c\u6700\u5c0f\u5024\u3068\u306a\u308b\u30dd\u30fc\u30c8<br>\u2460\u5404\u30ea\u30f3\u30af\u3054\u3068\u306b\uff11\u30dd\u30fc\u30c8\u9078\u51fa<br>\u2461\u5404\u30b9\u30a4\u30c3\u30c1\u306e\u30d1\u30b9\u30b3\u30b9\u30c8\u2192\u9001\u4fe1\u5143\u30d6\u30ea\u6642ID\u2192\u9001\u4fe1\u5143\u30dd\u30fc\u30c8ID<\/td><\/tr><tr><td>\u4ee3\u66ff\u30dd\u30fc\u30c8\uff08Alternate Port\uff1aAP\uff09<\/td><td>\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u7528\u30dd\u30fc\u30c8\uff08\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\u306e\u30ea\u30f3\u30af\u30c0\u30a6\u30f3\u6642\u306b\u9ad8\u901f\u5207\u66ff\uff09<br>\u203b\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u306f\u3057\u306a\u3044\u30dd\u30fc\u30c8<\/td><\/tr><tr><td>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30dd\u30fc\u30c8\uff08Backup Port\uff1aBP\uff09<\/td><td>\u6307\u5b9a\u30dd\u30fc\u30c8\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u306a\u308b\u30dd\u30fc\u30c8\uff08\u6307\u5b9a\u30dd\u30fc\u30c8\u30c0\u30a6\u30f3\u6642\u306b\u5207\u66ff\uff09<br>\u203bDP\/BP\u306e\u9055\u3044\u306f\u9001\u4fe1\u5143\u30dd\u30fc\u30c8ID\uff08\u5c0f\u3055\u3044\u65b9\u304cDP\u3068\u306a\u308b\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3000\u5927\u304d\u304f\u5909\u308f\u3063\u305f\u70b9\u306f\u975e\u6307\u5b9a\u30dd\u30fc\u30c8\u304c\u306a\u304f\u306a\u308a\u3001\u4ee3\u66ff\u30dd\u30fc\u30c8\uff08Alternate Port\uff09\u3068\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30dd\u30fc\u30c8\uff08Backup Port\uff09\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\uff12\u3064\u306f\u9ad8\u901f\u5207\u66ff\u306e\u305f\u3081\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30dd\u30fc\u30c8\u3068\u306a\u308a\u3001\u30eb\u30fc\u30c8\u30dd\u30fc\u30c8\u3068\u6307\u5b9a\u30dd\u30fc\u30c8\u7528\u306e\uff12\u3064\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30dd\u30fc\u30c8\u306b\u3088\u308a\u969c\u5bb3\u691c\u77e5\u3057\u305f\u969b\u306b\u3001\u518d\u8a08\u7b97\u524d\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000RSTP\u306e\u9069\u7528\u306e\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)#spanning-tree mode rapid-pvst<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u308c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u306b\u5909\u5316\u304c\u767a\u751f\u3057\u305f\u969b\u306e\u30ed\u30b0\u3092\u898b\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f7f\u3063\u305f\u69cb\u6210\u306f\u5148\u7a0b\u3068\u540c\u3058\u56db\u89d2\u5f62\u306e\u69cb\u6210\u3067\u3059\u304c\u3001\u30dd\u30fc\u30c8\u306e\u5f79\u5272\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u56f3\u306eL2SW4\u306eGi0\/1\u304c\u975e\u6307\u5b9a\u30dd\u30fc\u30c8\u3067\u306f\u306a\u304f\u3001Alternate Port\uff08AP\uff09\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" version=\"1.1\" width=\"739px\" viewBox=\"-0.5 -0.5 739 403\" content=\"&lt;mxfile host=&quot;Electron&quot; modified=&quot;2023-08-05T08:18:41.995Z&quot; agent=&quot;Mozilla\/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit\/537.36 (KHTML, like Gecko) draw.io\/21.6.5 Chrome\/114.0.5735.243 Electron\/25.3.1 Safari\/537.36&quot; etag=&quot;iPrAMYrgF6MjkT7BFctm&quot; version=&quot;21.6.5&quot; type=&quot;device&quot;&gt;&#10;  &lt;diagram name=&quot;\u30da\u30fc\u30b81&quot; id=&quot;DhF2NYAauxI0FTWPj47S&quot;&gt;&#10;    &lt;mxGraphModel dx=&quot;954&quot; dy=&quot;674&quot; grid=&quot;1&quot; gridSize=&quot;10&quot; guides=&quot;1&quot; tooltips=&quot;1&quot; connect=&quot;1&quot; arrows=&quot;1&quot; fold=&quot;1&quot; page=&quot;1&quot; pageScale=&quot;1&quot; pageWidth=&quot;1654&quot; pageHeight=&quot;1169&quot; math=&quot;0&quot; shadow=&quot;0&quot;&gt;&#10;      &lt;root&gt;&#10;        &lt;mxCell id=&quot;0&quot; \/&gt;&#10;        &lt;mxCell id=&quot;1&quot; parent=&quot;0&quot; \/&gt;&#10;        &lt;mxCell id=&quot;5VoLE1gmpPg6R144xF9q-2&quot; style=&quot;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.98;exitY=0.5;exitDx=0;exitDy=0;exitPerimeter=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;entryPerimeter=0;endArrow=none;endFill=0;strokeWidth=2;&quot; parent=&quot;1&quot; source=&quot;ZFVN1oCWS8QrrXvcVWS8-3&quot; target=&quot;5VoLE1gmpPg6R144xF9q-1&quot; edge=&quot;1&quot;&gt;&#10;          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot; \/&gt;&#10;        &lt;\/mxCell&gt;&#10;        &lt;mxCell id=&quot;ZFVN1oCWS8QrrXvcVWS8-3&quot; value=&quot;&quot; style=&quot;shape=mxgraph.cisco.switches.workgroup_switch;sketch=0;html=1;pointerEvents=1;dashed=0;fillColor=#036897;strokeColor=#ffffff;strokeWidth=2;verticalLabelPosition=bottom;verticalAlign=top;align=center;outlineConnect=0;&quot; parent=&quot;1&quot; vertex=&quot;1&quot;&gt;&#10;          &lt;mxGeometry x=&quot;170&quot; y=&quot;100&quot; width=&quot;101&quot; height=&quot;50&quot; as=&quot;geometry&quot; \/&gt;&#10;        &lt;\/mxCell&gt;&#10;        &lt;mxCell id=&quot;ZFVN1oCWS8QrrXvcVWS8-7&quot; style=&quot;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;exitPerimeter=0;strokeWidth=2;endArrow=none;endFill=0;&quot; parent=&quot;1&quot; source=&quot;ZFVN1oCWS8QrrXvcVWS8-4&quot; target=&quot;ZFVN1oCWS8QrrXvcVWS8-3&quot; edge=&quot;1&quot;&gt;&#10;          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot; \/&gt;&#10;        &lt;\/mxCell&gt;&#10;        &lt;mxCell id=&quot;ZFVN1oCWS8QrrXvcVWS8-8&quot; style=&quot;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;entryX=0;entryY=0.98;entryDx=0;entryDy=0;entryPerimeter=0;exitX=0.87;exitY=0.74;exitDx=0;exitDy=0;exitPerimeter=0;endArrow=none;endFill=0;strokeWidth=2;&quot; parent=&quot;1&quot; source=&quot;ZFVN1oCWS8QrrXvcVWS8-4&quot; edge=&quot;1&quot;&gt;&#10;          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;&#10;            &lt;mxPoint x=&quot;290&quot; y=&quot;399.4000000000001&quot; as=&quot;sourcePoint&quot; 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border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"113\" y=\"95\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"171.5\" cy=\"61.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 62px; margin-left: 160px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"172\" y=\"65\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><rect x=\"0\" y=\"244\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 259px; margin-left: 1px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/div><\/div><\/div><\/foreignObject><text x=\"55\" y=\"263\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/text><\/switch><\/g><ellipse cx=\"631.5\" cy=\"101.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 102px; margin-left: 620px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"632\" y=\"105\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"571.5\" cy=\"56.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 57px; margin-left: 560px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"572\" y=\"60\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"161.5\" cy=\"356.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#009900\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 357px; margin-left: 150px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">DP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"162\" y=\"360\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">DP<\/text><\/switch><\/g><ellipse cx=\"101.5\" cy=\"291.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 292px; margin-left: 90px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"102\" y=\"295\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"631.5\" cy=\"291.5\" rx=\"12.5\" ry=\"12.5\" fill=\"#0000ff\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 23px; height: 1px; padding-top: 292px; margin-left: 620px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b style=\"font-size: 12px;\">RP<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"632\" y=\"295\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">RP<\/text><\/switch><\/g><ellipse cx=\"554\" cy=\"359\" rx=\"15\" ry=\"15\" fill=\"#ff0000\" stroke=\"rgb(0, 0, 0)\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 359px; margin-left: 540px;\"><div data-drawio-colors=\"color: #FFFFFF; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><b>Alt<\/b><\/div><\/div><\/div><\/foreignObject><text x=\"554\" y=\"363\" fill=\"#FFFFFF\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">Alt<\/text><\/switch><\/g><rect x=\"449\" y=\"34\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 49px; margin-left: 450px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/div><\/div><\/div><\/foreignObject><text x=\"504\" y=\"53\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a4<\/text><\/switch><\/g><rect x=\"629\" y=\"244\" width=\"110\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 259px; margin-left: 630px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a8<\/div><\/div><\/div><\/foreignObject><text x=\"684\" y=\"263\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">\u30d1\u30b9\u30b3\u30b9\u30c8\uff1a8<\/text><\/switch><\/g><path d=\"M 619.5 93 L 619.25 174\" fill=\"none\" stroke=\"rgb(0, 0, 0)\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"stroke\"\/><ellipse cx=\"619.25\" cy=\"194\" rx=\"20\" ry=\"20\" fill=\"#ffff00\" stroke=\"#ff0000\" stroke-width=\"2\" pointer-events=\"all\"\/><path d=\"M 605.05 179.8 L 633.45 208.2\" fill=\"none\" stroke=\"#ff0000\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><path d=\"M 633.45 179.8 L 605.05 208.2\" fill=\"none\" stroke=\"#ff0000\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><\/g><switch><g requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\"\/><a transform=\"translate(0,-5)\" xlink:href=\"https:\/\/www.drawio.com\/doc\/faq\/svg-export-text-problems\" target=\"_blank\" rel=\"noopener\"><text text-anchor=\"middle\" font-size=\"10px\" x=\"50%\" y=\"100%\">Text is not SVG &#8211; cannot display<\/text><\/a><\/switch><\/svg>\n\n\n\n<p>\u305d\u306e\u7d50\u679c\u3001L2SW4\u306e\u307f\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u304c\u5410\u304d\u51fa\u3055\u308c\u3001Gi0\/0\u2192G0\/1\u306b\u9077\u79fb\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u9077\u79fb\u306e\u6642\u9593\u306f\u3001\u30ea\u30f3\u30af\u30c0\u30a6\u30f3\u304c13:17:49.630\u3060\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001Gi0\/0\u304cDP\u306b\u306a\u3063\u305f\u306e\u304c13:17.53.499\u3068\u7d044\u79d2\u5f31\u3067\u5207\u308a\u66ff\u308f\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\uff08L4SW\u306e\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\uff09\n*Jul 25 13:17:49.630: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0\/0, changed state to down\n*Jul 25 13:17:50.630: %LINK-3-UPDOWN: Interface GigabitEthernet0\/0, changed state to down\n*Jul 25 13:17:53.499: RSTP(2): Gi0\/0 rcvd info expired\n*Jul 25 13:17:53.499: RSTP(2): updt roles, information on root port Gi0\/0 expired\n*Jul 25 13:17:53.499: RSTP(2): Gi0\/1 is now root port\n*Jul 25 13:17:53.499: RSTP(2): Gi0\/0 blocked by re-root\n*Jul 25 13:17:53.499: RSTP(2): Gi0\/0 is now designated\n*Jul 25 13:17:53.499: STP&#91;2]: Generating TC trap for port GigabitEthernet0\/1\n*Jul 25 13:17:53.500: RSTP(2): transmitting a proposal on Gi0\/0\n*Jul 25 13:17:54.788: RSTP(2): transmitting a proposal on Gi0\/0\n*Jul 25 13:17:56.789: RSTP(2): transmitting a proposal on Gi0\/0undebug\n*Jul 25 13:17:58.790: RSTP(2): transmitting a proposal on Gi0\/0 all\nAll possible debugging has been turned off<\/code><\/pre>\n\n\n\n<p>\u3000\u3053\u306e\u3088\u3046\u306bSTP\u3067\u306fListening\/Learning\u306e\u72b6\u614b\u306715\u79d2\u305a\u3064\u30ad\u30fc\u30d7\u3057\u3066\u3044\u305f\u306e\u304c\u3001\u304b\u306a\u308a\u9ad8\u901f\u306b\u5207\u308a\u66ff\u308f\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000RSTP\u3092\u4f7f\u3046\u3053\u3068\u3067\u969c\u5bb3\u306b\u3088\u308b\u65ad\u6642\u9593\u3092\u6975\u529b\u6700\u5c0f\u9650\u306b\u3057\u305f\u4e0a\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u7bc9\u30fb\u904b\u7528\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6700\u5f8c\u306b<\/h2>\n\n\n\n<p>\u3000\u4eca\u56de\u306f\u3001STP\/RSTP\u306e\u57fa\u672c\u306b\u3064\u3044\u3066\u3001\u3056\u3063\u304f\u308a\u5fa9\u7fd2\u3068\u6df1\u6398\u308a\u3092\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u6b21\u56de\u306e\u6295\u7a3f\u3067\u306f\u3001\u4f5c\u696d\u6642\u306bSTP\u306e\u8fc2\u56de\u3092\u3069\u3046\u3059\u308b\u304b\u8003\u3048\u305f\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u3001\u305d\u306e\u8a71\u3092\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3T061I+D5X2B6+CO4+15TP8X\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www28.a8.net\/svt\/bgt?aid=230115222796&amp;wid=001&amp;eno=01&amp;mid=s00000001642007025000&amp;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www14.a8.net\/0.gif?a8mat=3T061I+D5X2B6+CO4+15TP8X\" alt=\"\"><\/center>\n\n\n<div class=\"p-postListWrap\"><ul class=\"p-postList -type-card -pc-col3 -sp-col1\"><li class=\"p-postList__item\">\n\t<a href=\"https:\/\/daimaru-tech-blog.com\/?p=1032\" class=\"p-postList__link\">\n\t\t<div class=\"p-postList__thumb c-postThumb\">\n\t<figure class=\"c-postThumb__figure\">\n\t\t<img decoding=\"async\" width=\"1024\" height=\"576\"  src=\"https:\/\/daimaru-tech-blog.com\/wp-content\/uploads\/2023\/07\/STP_RSTP_\u5165\u95802.png\" alt=\"\" class=\"c-postThumb__img u-obf-cover\" sizes=\"auto, (min-width: 960px) 400px, 100vw\" loading=\"lazy\" >\t<\/figure>\n\t\t\t<span class=\"c-postThumb__cat icon-folder\" data-cat-id=\"607\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/span>\n\t<\/div>\n\t\t\t\t\t<div class=\"p-postList__body\">\n\t\t\t\t<h2 class=\"p-postList__title\">\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u57fa\u790e\u30fb\u5165\u9580\u3011STP\/RSTP\u306ePriority\u3084\u30d1\u30b9\u30b3\u30b9\u30c8\u3092\u5fa9\u7fd2\u3057\u3066\u307f\u305f\uff08CCNA\uff09\uff08\u8aad\u4e86\u76ee\u5b89\uff1a5min~10min\uff09<\/h2>\t\t\t\t\t\t\t\t<div class=\"p-postList__meta\">\n\t\t\t\t\t<div class=\"p-postList__times c-postTimes u-thin\">\n\t<time class=\"c-postTimes__posted icon-posted\" datetime=\"2023-08-02\" aria-label=\"\u516c\u958b\u65e5\">2023\u5e748\u67082\u65e5<\/time><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/a>\n<\/li>\n<\/ul><\/div>","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u3000\u3053\u3093\u306b\u3061\u306f\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u300c\u3060\u3044\u307e\u308b\u300d\u3067\u3059\u3002 \u3000\u4eca\u56de\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u672c\u4e2d\u306e\u57fa\u672c\u3068\u306a\u308bSpanning Tree Protocol\uff08STP\uff09\u3068\u9ad8\u901f\u53ce\u675f\u304c\u53ef\u80fd\u306aRapid-STP\uff08RSTP\uff09\u306b\u3064\u3044\u3066\u3001 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