{"id":476106,"date":"2023-08-09T07:25:33","date_gmt":"2023-08-09T07:25:33","guid":{"rendered":""},"modified":"2023-09-05T11:12:01","modified_gmt":"2023-09-05T11:12:01","slug":"bridge-protocol-data-unit","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/bridge-protocol-data-unit\/","title":{"rendered":"\u30d6\u30ea\u30c3\u30b8\u30d7\u30ed\u30c8\u30b3\u30eb\u30c7\u30fc\u30bf\u30e6\u30cb\u30c3\u30c8"},"content":{"rendered":"<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8 (BPDU) \u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u306b\u7279\u306b\u95a2\u4fc2\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d6\u30ea\u30c3\u30b8\u9593\u3067\u60c5\u5831\u3092\u4ea4\u63db\u3059\u308b\u624b\u6bb5\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d6\u30ea\u30c3\u30b8\u304c\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u901a\u4fe1\u3057\u3066\u9023\u643a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002BPDU \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5b89\u5b9a\u6027\u3001\u5197\u9577\u6027\u3001\u30eb\u30fc\u30d7\u9632\u6b62\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u304a\u308a\u3001\u52b9\u679c\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u3068\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u6a5f\u80fd\u306b\u4e0d\u53ef\u6b20\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306e\u8d77\u6e90\u3068\u305d\u306e\u6700\u521d\u306e\u8a00\u53ca\u306e\u6b74\u53f2<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306e\u6982\u5ff5\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30d9\u30fc\u30b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u666e\u53ca\u3057\u59cb\u3081\u305f 1980 \u5e74\u4ee3\u521d\u982d\u306b\u521d\u3081\u3066\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u7c73\u56fd\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc \u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u3067\u3042\u308b Radia Perlman \u535a\u58eb\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30eb\u30fc\u30d7\u3092\u9632\u6b62\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5197\u9577\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b BPDU \u3092\u4f7f\u7528\u3059\u308b\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30d7\u30ed\u30c8\u30b3\u30eb (STP) \u306e\u30a2\u30a4\u30c7\u30a2\u3092\u63d0\u6848\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u6982\u5ff5\u306f\u3001\u5f8c\u306b 1990 \u5e74\u306b IEEE 802.1D \u4ed5\u69d8\u306e\u4e00\u90e8\u3068\u3057\u3066\u6a19\u6e96\u5316\u3055\u308c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1\u306b\u304a\u3051\u308b\u305d\u306e\u91cd\u8981\u6027\u304c\u78ba\u7acb\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306f\u3001\u57fa\u672c\u7684\u306b\u3001\u30d6\u30ea\u30c3\u30b8\u3084\u30b9\u30a4\u30c3\u30c1\u304c\u30c7\u30fc\u30bf\u4ea4\u63db\u306b\u4f7f\u7528\u3059\u308b\u91cd\u8981\u306a\u60c5\u5831\u3092\u542b\u3080\u30d5\u30ec\u30fc\u30e0\u5f62\u5f0f\u3067\u3059\u3002\u30d6\u30ea\u30c3\u30b8\u306f BPDU \u3092\u53d7\u4fe1\u3059\u308b\u3068\u3001\u305d\u306e\u4e2d\u306e\u60c5\u5831\u3092\u4f7f\u7528\u3057\u3066\u30eb\u30fc\u30d7\u306e\u306a\u3044\u30c4\u30ea\u30fc \u30c8\u30dd\u30ed\u30b8\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u3053\u306e\u30c4\u30ea\u30fc\u69cb\u9020\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u306e\u885d\u7a81\u3092\u9632\u304e\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u8ee2\u9001\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002BPDU \u306f\u3001\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5b9b\u5148\u306b\u5230\u9054\u3059\u308b\u30d1\u30b9\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u3067\u3082\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u52d5\u4f5c\u3057\u7d9a\u3051\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306e\u5185\u90e8\u69cb\u9020\u3068\u305d\u306e\u52d5\u4f5c<\/h2>\n<p>BPDU \u306b\u306f\u3001\u305d\u306e\u64cd\u4f5c\u3092\u5bb9\u6613\u306b\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30d7\u30ed\u30c8\u30b3\u30eb\u8b58\u5225\u5b50 (PID):<\/strong> BPDU \u4ea4\u63db\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u8b58\u5225\u3057\u307e\u3059\u3002\u901a\u5e38\u306f 0x0000 (\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u793a\u3059) \u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d7\u30ed\u30c8\u30b3\u30eb \u30d0\u30fc\u30b8\u30e7\u30f3\u8b58\u5225\u5b50 (PVID):<\/strong> \u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d6\u30ea\u30c3\u30b8ID (BID):<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u5404\u30d6\u30ea\u30c3\u30b8\u3092\u4e00\u610f\u306b\u8b58\u5225\u3057\u307e\u3059\u3002\u30d6\u30ea\u30c3\u30b8\u306e\u30d6\u30ea\u30c3\u30b8\u512a\u5148\u5ea6\u5024\u3068\u30e1\u30c7\u30a3\u30a2 \u30a2\u30af\u30bb\u30b9\u5236\u5fa1 (MAC) \u30a2\u30c9\u30ec\u30b9\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30dd\u30fc\u30c8ID:<\/strong> BPDU \u304c\u9001\u4fe1\u3055\u308c\u308b\u30dd\u30fc\u30c8\u3092\u8b58\u5225\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5e74\u9f62:<\/strong> BPDU \u304c\u751f\u6210\u3055\u308c\u3066\u304b\u3089\u7d4c\u904e\u3057\u305f\u6642\u9593\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6700\u5927\u5e74\u9f62:<\/strong> BPDU \u304c\u7834\u68c4\u3055\u308c\u308b\u307e\u3067\u306e\u6709\u52b9\u671f\u9593\u306e\u6700\u5927\u6642\u9593\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30cf\u30ed\u30fc\u30bf\u30a4\u30e0:<\/strong> \u9023\u7d9a\u3059\u308b 2 \u3064\u306e BPDU \u9593\u306e\u6642\u9593\u9593\u9694\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8ee2\u9001\u9045\u5ef6:<\/strong> \u30d6\u30ea\u30c3\u30b8 \u30dd\u30fc\u30c8\u304c\u8ee2\u9001\u72b6\u614b\u306b\u79fb\u884c\u3059\u308b\u524d\u306b\u3001\u30ea\u30b9\u30cb\u30f3\u30b0\u72b6\u614b\u3068\u5b66\u7fd2\u72b6\u614b\u3067\u8cbb\u3084\u3059\u6642\u9593\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u8d77\u52d5\u307e\u305f\u306f\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u30d6\u30ea\u30c3\u30b8\u306f BPDU \u3092\u4ea4\u63db\u3057\u3066\u901a\u4fe1\u3092\u78ba\u7acb\u3057\u3001\u6700\u9069\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002BPDU \u4ea4\u63db\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u3001\u30eb\u30fc\u30c8 \u30d6\u30ea\u30c3\u30b8\u306e\u9078\u629e\u3001\u30dd\u30fc\u30c8 \u30ed\u30fc\u30eb\u306e\u5272\u308a\u5f53\u3066 (\u30eb\u30fc\u30c8\u3001\u6307\u5b9a\u3001\u307e\u305f\u306f\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0)\u3001\u304a\u3088\u3073\u30eb\u30fc\u30c8 \u30d6\u30ea\u30c3\u30b8\u306b\u5230\u9054\u3059\u308b\u305f\u3081\u306e\u6700\u9069\u306a\u30d1\u30b9\u306e\u6c7a\u5b9a\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30d6\u30ea\u30c3\u30b8\u30d7\u30ed\u30c8\u30b3\u30eb\u30c7\u30fc\u30bf\u30e6\u30cb\u30c3\u30c8\u306e\u4e3b\u306a\u6a5f\u80fd\u306e\u5206\u6790<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1\u3068\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u6a5f\u80fd\u306b\u4e0d\u53ef\u6b20\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306a\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30eb\u30fc\u30d7\u9632\u6b62:<\/strong> BPDU \u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u885d\u7a81\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4e0d\u5b89\u5b9a\u6027\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30eb\u30fc\u30d7\u3092\u9632\u3050\u3053\u3068\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5197\u9577\u6027\u3068\u8010\u969c\u5bb3\u6027:<\/strong> BPDU \u306f\u30eb\u30fc\u30d7\u306e\u306a\u3044\u30c4\u30ea\u30fc \u30c8\u30dd\u30ed\u30b8\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u5b9b\u5148\u3078\u306e\u5197\u9577\u30d1\u30b9\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3001\u4e00\u90e8\u306e\u30d1\u30b9\u306b\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3067\u3082\u30d5\u30a9\u30fc\u30eb\u30c8 \u30c8\u30ec\u30e9\u30f3\u30b9\u3068\u7d99\u7d9a\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u64cd\u4f5c\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u52b9\u7387\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5229\u7528:<\/strong> BPDU \u306f\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u306b\u6700\u3082\u52b9\u7387\u7684\u306a\u30d1\u30b9\u3092\u6c7a\u5b9a\u3057\u3001\u4e0d\u8981\u306a\u9045\u5ef6\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4f7f\u7528\u7387\u3092\u6700\u9069\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u76f8\u4e92\u904b\u7528\u6027:<\/strong> BPDU \u306f IEEE 802.1D \u6a19\u6e96\u306b\u6e96\u62e0\u3057\u3066\u304a\u308a\u3001\u7570\u306a\u308b\u30d9\u30f3\u30c0\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u304c\u52b9\u7387\u7684\u306b\u901a\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306e\u7a2e\u985e<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306b\u306f\u4e3b\u306b 2 \u3064\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u69cb\u6210BPDU:<\/strong> \u3053\u308c\u3089\u306e BPDU \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30c8\u30dd\u30ed\u30b8\u3092\u69cb\u7bc9\u304a\u3088\u3073\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u69cb\u6210 BPDU \u306f\u3001\u30d6\u30ea\u30c3\u30b8 \u30b9\u30c6\u30fc\u30bf\u30b9\u3068\u30ea\u30f3\u30af\u306e\u53ef\u7528\u6027\u306e\u5909\u66f4\u306b\u3064\u3044\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6700\u65b0\u306e\u72b6\u614b\u306b\u4fdd\u3064\u305f\u3081\u306b\u5b9a\u671f\u7684\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30c8\u30dd\u30ed\u30b8\u5909\u66f4\u901a\u77e5 (TCN) BPDU:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d6\u30ea\u30c3\u30b8\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u5316\u3092\u4ed6\u306e\u30d6\u30ea\u30c3\u30b8\u306b\u901a\u77e5\u3059\u308b\u305f\u3081\u306b TCN BPDU \u304c\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4ed6\u306e\u30d6\u30ea\u30c3\u30b8\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u3092\u518d\u8a55\u4fa1\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u5909\u5316\u306b\u9069\u5fdc\u3059\u308b\u306e\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u6b21\u306e\u8868\u306f\u30012 \u7a2e\u985e\u306e BPDU \u306e\u9055\u3044\u3092\u307e\u3068\u3081\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>BPDU\u30bf\u30a4\u30d7<\/th>\n<th>\u76ee\u7684<\/th>\n<th>\u5f15\u304d\u91d1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u69cb\u6210BPDU<\/td>\n<td>\u30b9\u30d1\u30cb\u30f3\u30b0\u30c4\u30ea\u30fc\u306e\u69cb\u7bc9\u3068\u7dad\u6301<\/td>\n<td>\u5b9a\u671f\u7684\u306b\u3001\u307e\u305f\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5909\u66f4\u306b\u5fdc\u3058\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059<\/td>\n<\/tr>\n<tr>\n<td>TCN BPDU<\/td>\n<td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5909\u66f4\u3092\u4ed6\u306e\u30d6\u30ea\u30c3\u30b8\u306b\u901a\u77e5\u3059\u308b<\/td>\n<td>\u30d6\u30ea\u30c3\u30b8\u307e\u305f\u306f\u30ea\u30f3\u30af\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30d6\u30ea\u30c3\u30b8\u30d7\u30ed\u30c8\u30b3\u30eb\u30c7\u30fc\u30bf\u30e6\u30cb\u30c3\u30c8\u306e\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u306b\u95a2\u9023\u3059\u308b\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5b89\u5b9a\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5197\u9577\u6027:<\/strong> BPDU \u306f\u30b9\u30d1\u30cb\u30f3\u30b0 \u30c4\u30ea\u30fc \u30c8\u30dd\u30ed\u30b8\u3092\u78ba\u7acb\u3059\u308b\u3053\u3068\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5197\u9577\u6027\u3092\u78ba\u4fdd\u3057\u3001\u4e00\u90e8\u306e\u30d1\u30b9\u306b\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u3082\u7d99\u7d9a\u7684\u306a\u52d5\u4f5c\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8ca0\u8377\u5206\u6563:<\/strong> BPDU \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d6\u30ea\u30c3\u30b8\u306f\u30eb\u30fc\u30c8 \u30d6\u30ea\u30c3\u30b8\u3078\u306e\u6700\u77ed\u30d1\u30b9\u3092\u8a08\u7b97\u3067\u304d\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30b0\u30e1\u30f3\u30c8\u9593\u3067\u52b9\u7387\u7684\u306a\u8ca0\u8377\u5206\u6563\u304c\u4fc3\u9032\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u305f\u3060\u3057\u3001\u4e0d\u9069\u5207\u306a\u69cb\u6210\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5909\u66f4\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30eb\u30fc\u30d7:<\/strong> \u8aa4\u3063\u305f\u69cb\u6210\u306b\u3088\u308a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30eb\u30fc\u30d7\u304c\u767a\u751f\u3057\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8 \u30b9\u30c8\u30fc\u30e0\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8f3b\u8f33\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6700\u9069\u3067\u306f\u306a\u3044\u30d1\u30b9:<\/strong> BPDU \u4ea4\u63db\u304c\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u6700\u9069\u3067\u306a\u3044\u30d1\u30b9\u304c\u9078\u629e\u3055\u308c\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u304c\u975e\u52b9\u7387\u7684\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306f\u6b21\u306e\u3053\u3068\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>BPDU\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30eb\u30fc\u30d7\u3092\u9632\u6b62\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d1\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u3001BPDU \u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9a\u671f\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d99\u7d9a\u7684\u306b\u76e3\u8996\u3057\u3001BPDU \u95a2\u9023\u306e\u7570\u5e38\u3092\u901f\u3084\u304b\u306b\u7279\u5b9a\u3057\u3066\u4fee\u6b63\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8 (BPDU)<\/td>\n<td>\u30eb\u30fc\u30d7\u306e\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u3092\u69cb\u7bc9\u304a\u3088\u3073\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d6\u30ea\u30c3\u30b8\u9593\u3067\u60c5\u5831\u3092\u4ea4\u63db\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30ec\u30fc\u30e0\u5f62\u5f0f\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/td>\n<td>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9593\u306e\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8981\u6c42\u3068\u5fdc\u7b54\u3092\u8ee2\u9001\u3059\u308b\u4e2d\u9593\u30b5\u30fc\u30d0\u30fc\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30d1\u30cb\u30f3\u30b0\u30c4\u30ea\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb (STP)<\/td>\n<td>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30eb\u30fc\u30d7\u3092\u9632\u6b62\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5197\u9577\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30d6\u30ea\u30c3\u30b8\u3068\u30b9\u30a4\u30c3\u30c1\u3067\u4f7f\u7528\u3055\u308c\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d7\u30ed\u30c8\u30b3\u30eb\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30e1\u30c7\u30a3\u30a2 \u30a2\u30af\u30bb\u30b9\u5236\u5fa1 (MAC) \u30a2\u30c9\u30ec\u30b9<\/td>\n<td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 \u30ab\u30fc\u30c9\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u3068\u901a\u4fe1\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30d6\u30ea\u30c3\u30b8\u30d7\u30ed\u30c8\u30b3\u30eb\u30c7\u30fc\u30bf\u30e6\u30cb\u30c3\u30c8\u306b\u95a2\u3059\u308b\u5c06\u6765\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u6280\u8853\u304c\u9032\u6b69\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306f\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u9700\u8981\u306b\u5408\u308f\u305b\u3066\u3055\u3089\u306b\u9032\u5316\u3059\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002\u4eca\u5f8c\u306e\u958b\u767a\u3067\u306f\u3001\u6b21\u306e\u70b9\u306b\u91cd\u70b9\u304c\u7f6e\u304b\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901f\u5ea6\u306e\u5411\u4e0a:<\/strong> \u3088\u308a\u9ad8\u901f\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u767b\u5834\u306b\u3088\u308a\u3001BPDU \u306f\u3088\u308a\u9ad8\u3044\u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u3092\u3088\u308a\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u6700\u9069\u5316\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u81ea\u52d5\u5316\u3068 AI \u7d71\u5408:<\/strong> \u4eba\u5de5\u77e5\u80fd\u3068\u81ea\u52d5\u5316\u306f\u3001BPDU \u69cb\u6210\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u7ba1\u7406\u306e\u6700\u9069\u5316\u306b\u5f79\u7acb\u3064\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u4f7f\u7528\u65b9\u6cd5\u307e\u305f\u306f\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u3068\u306e\u95a2\u9023\u4ed8\u3051\u65b9\u6cd5<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u3068\u901a\u4fe1\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u5bc6\u63a5\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001BPDU \u3092\u901a\u3058\u3066\u4ea4\u63db\u3055\u308c\u308b\u60c5\u5831\u3092\u6d3b\u7528\u3057\u3066\u3001\u6b21\u306e\u3053\u3068\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u52b9\u7387\u306e\u5411\u4e0a:<\/strong> BPDU \u3092\u901a\u3058\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u6c7a\u5b9a\u3092\u6700\u9069\u5316\u3057\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u52b9\u7387\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5197\u9577\u6027\u3068\u30d5\u30a9\u30fc\u30eb\u30c8\u30c8\u30ec\u30e9\u30f3\u30b9\u3092\u78ba\u4fdd\u3059\u308b:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f BPDU \u60c5\u5831\u3092\u5229\u7528\u3057\u3066\u5197\u9577\u30d1\u30b9\u3092\u8b58\u5225\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u4e2d\u65ad\u3057\u305f\u5834\u5408\u3067\u3082\u4e2d\u65ad\u306e\u306a\u3044\u30b5\u30fc\u30d3\u30b9\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30d6\u30ea\u30c3\u30b8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30c7\u30fc\u30bf \u30e6\u30cb\u30c3\u30c8\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u304a\u3051\u308b\u305d\u306e\u5f79\u5272\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/document\/726174\" target=\"_new\" rel=\"noopener nofollow\">IEEE 802.1D\u898f\u683c<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/tech\/lan-switching\/spanning-tree-protocol\/index.html\" target=\"_new\" rel=\"noopener nofollow\">\u30b9\u30d1\u30cb\u30f3\u30b0\u30c4\u30ea\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\uff08STP\uff09\u306e\u8aac\u660e<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476107,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476106","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Bridge Protocol Data Unit: Enhancing Proxy Server Communication<\/mark>","faq_items":[{"question":"What is a Bridge Protocol Data Unit (BPDU)?","answer":"<p>A Bridge Protocol Data Unit (BPDU) is a frame format used for exchanging information between network bridges, ensuring a loop-free network topology and enhancing network stability.<\/p>"},{"question":"Who introduced the concept of Bridge Protocol Data Unit?","answer":"<p>The concept of Bridge Protocol Data Unit was first introduced by Dr. Radia Perlman, an American computer scientist, in the early 1980s. It later became standardized as part of the IEEE 802.1D specification.<\/p>"},{"question":"How does Bridge Protocol Data Unit prevent network loops?","answer":"<p>BPDU helps prevent network loops by constructing a loop-free tree topology, which ensures efficient data transmission and reduces the chances of packet collisions.<\/p>"},{"question":"What are the two types of Bridge Protocol Data Units?","answer":"<p>There are two types of BPDUs: Configuration BPDUs, used for building and maintaining the Spanning Tree, and Topology Change Notification (TCN) BPDUs, sent to notify other bridges about network changes.<\/p>"},{"question":"How can Bridge Protocol Data Unit be used with proxy servers?","answer":"<p>Bridge Protocol Data Units can be utilized by proxy servers to optimize network efficiency, ensure redundancy, and improve fault tolerance, making the network more reliable and responsive.<\/p>"},{"question":"How does Bridge Protocol Data Unit contribute to network redundancy?","answer":"<p>BPDU information allows bridges to compute the shortest paths to the root bridge, ensuring network redundancy and fault tolerance in the face of link failures.<\/p>"},{"question":"What are the key features of Bridge Protocol Data Unit?","answer":"<p>The key features of BPDU include loop prevention, redundancy and fault tolerance, efficient network utilization, and interoperability with devices from different vendors.<\/p>"},{"question":"How can I ensure proper configuration of BPDUs?","answer":"<p>To ensure proper configuration of BPDUs, network administrators should correctly set up BPDUs to prevent network loops and regularly monitor the network for any anomalies related to BPDU exchange.<\/p>"},{"question":"How can Bridge Protocol Data Unit evolve in the future?","answer":"<p>In the future, Bridge Protocol Data Units are expected to adapt to faster network technologies and may integrate automation and AI for optimized configuration and network management.<\/p>"},{"question":"How do Bridge Protocol Data Units help proxy servers optimize routing?","answer":"<p>Proxy servers utilize BPDU information to optimize routing decisions, leading to improved data transmission efficiency and better network performance.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476106\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/476107"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=476106"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}