{"id":477122,"date":"2023-08-09T09:07:44","date_gmt":"2023-08-09T09:07:44","guid":{"rendered":""},"modified":"2023-09-05T11:14:04","modified_gmt":"2023-09-05T11:14:04","slug":"ethernet","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/ethernet\/","title":{"rendered":"\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8"},"content":{"rendered":"<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30ed\u30fc\u30ab\u30eb \u30a8\u30ea\u30a2 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af (LAN)\u3001\u30e1\u30c8\u30ed\u30dd\u30ea\u30bf\u30f3 \u30a8\u30ea\u30a2 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af (MAN)\u3001\u304a\u3088\u3073\u30ef\u30a4\u30c9 \u30a8\u30ea\u30a2 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af (WAN) \u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0 \u30c6\u30af\u30ce\u30ed\u30b8\u306e\u30d5\u30a1\u30df\u30ea\u30fc\u3067\u3059\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30ed\u30fc\u30ab\u30eb \u30a8\u30ea\u30a2 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u898f\u683c\u3068\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5b9f\u88c5\u3092\u901a\u3058\u3066\u30c7\u30fc\u30bf\u4ea4\u63db\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u6b74\u53f2\u3068\u6700\u521d\u306e\u8a00\u53ca<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u30011970 \u5e74\u4ee3\u521d\u982d\u306b\u30bc\u30ed\u30c3\u30af\u30b9\u306e\u30d1\u30ed\u30a2\u30eb\u30c8\u7814\u7a76\u30bb\u30f3\u30bf\u30fc (PARC) \u306e\u7814\u7a76\u8005\u3067\u3042\u308b\u30ed\u30d0\u30fc\u30c8 \u30e1\u30c8\u30ab\u30fc\u30d5\u306b\u3088\u3063\u3066\u6700\u521d\u306b\u8003\u6848\u3055\u308c\u307e\u3057\u305f\u3002\u5f7c\u3068\u540c\u50da\u306f\u3001\u4f1a\u793e\u306e\u300cAlto\u300d\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3092\u5171\u6709\u30d7\u30ea\u30f3\u30bf\u306b\u63a5\u7d9a\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3057\u305f\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u6700\u521d\u306e\u6982\u5ff5\u306f\u30011973 \u5e74\u306b\u30e1\u30c8\u30ab\u30fc\u30d5\u306b\u3088\u3063\u3066\u66f8\u304b\u308c\u305f\u30e1\u30e2\u306e\u4e2d\u3067\u6982\u8aac\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u3053\u3067\u30e1\u30c8\u30ab\u30fc\u30d5\u306f\u30a4\u30fc\u30b5\u306e\u5f62\u72b6\u306b\u4f3c\u305f\u63a5\u7d9a\u30c7\u30d0\u30a4\u30b9\u306e\u57fa\u672c\u56f3\u3092\u63cf\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u30a2\u30a4\u30c7\u30a2\u306f\u5f8c\u306b\u3001\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u767a\u5c55\u3057\u307e\u3057\u305f\u3002\u30bc\u30ed\u30c3\u30af\u30b9\u306f 1975 \u5e74\u306b\u7279\u8a31\u3092\u51fa\u9858\u3057\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u6a19\u6e96\u5316\u306f 1980 \u5e74\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30d0\u30fc\u30b8\u30e7\u30f3 1 \u4ed5\u69d8\u306e\u4f5c\u6210\u304b\u3089\u59cb\u307e\u308a\u307e\u3057\u305f\u3002IEEE 802.3 \u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u516c\u5f0f\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u6a19\u6e96\u306f\u30011983 \u5e74\u306b\u96fb\u6c17\u96fb\u5b50\u5b66\u4f1a (IEEE) \u306b\u3088\u3063\u3066\u767a\u884c\u3055\u308c\u307e\u3057\u305f\u3002\u305d\u308c\u4ee5\u6765\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u6210\u9577\u3057\u3001\u9032\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u4e2d\u5fc3\u3068\u306a\u308b\u6982\u5ff5\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3092\u63a5\u7d9a\u3057\u3066\u30c7\u30fc\u30bf\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u30b7\u30f3\u30d7\u30eb\u3067\u5805\u7262\u306a\u65b9\u6cd5\u3068\u3057\u3066\u5909\u308f\u3063\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<h2>\u30c8\u30d4\u30c3\u30af\u306e\u62e1\u5f35: \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30ce\u30fc\u30c9\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u30d1\u30b1\u30c3\u30c8\u5185\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u3068\u3044\u3046\u8003\u3048\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u4e2d\u592e\u306e\u30b1\u30fc\u30d6\u30eb\u3001\u3064\u307e\u308a\u300c\u30d0\u30b9\u300d\u306b\u63a5\u7d9a\u3055\u308c\u3001\u30c7\u30fc\u30bf\u306f\u30d5\u30ec\u30fc\u30e0\u3068\u547c\u3070\u308c\u308b\u5c0f\u3055\u306a\u30d1\u30b1\u30c3\u30c8\u3068\u3057\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u5404\u30d5\u30ec\u30fc\u30e0\u306b\u306f\u3001\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3068\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u3001\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u30b3\u30fc\u30c9\u3001\u304a\u3088\u3073\u30da\u30a4\u30ed\u30fc\u30c9\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30b9\u30bf\u30fc\u3001\u30c4\u30ea\u30fc\u3001\u30d0\u30b9\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u73fe\u5728\u6700\u3082\u4e00\u822c\u7684\u306a\u306e\u306f\u3001\u30b9\u30bf\u30fc\u306e\u4e2d\u5fc3\u306b\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30b9\u30a4\u30c3\u30c1\u3092\u5099\u3048\u305f\u30b9\u30bf\u30fc \u30c8\u30dd\u30ed\u30b8\u3067\u3059\u3002\u3053\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u885d\u7a81\u306e\u53ef\u80fd\u6027\u304c\u6e1b\u308a\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u52b9\u7387\u3068\u4fe1\u983c\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u305d\u306e\u8a95\u751f\u4ee5\u6765\u3001\u5927\u5e45\u306b\u9032\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u30c7\u30fc\u30bf\u4f1d\u9001\u901f\u5ea6\u306f\u3001\u5f53\u521d\u306e 10 \u30e1\u30ac\u30d3\u30c3\u30c8\/\u79d2 (Mbps) \u304b\u3089\u3001\u9ad8\u901f\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 (100 Mbps)\u3001\u30ae\u30ac\u30d3\u30c3\u30c8 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 (1 Gbps)\u300110 \u30ae\u30ac\u30d3\u30c3\u30c8 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u300140 \u30ae\u30ac\u30d3\u30c3\u30c8 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3001\u3055\u3089\u306b\u306f 100 \u30ae\u30ac\u30d3\u30c3\u30c8 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3078\u3068\u9ad8\u901f\u5316\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u5e45\u5e83\u3044\u7bc4\u56f2\u306b\u3088\u308a\u3001\u30db\u30fc\u30e0 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u30c7\u30fc\u30bf \u30bb\u30f3\u30bf\u30fc\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d0\u30c3\u30af\u30dc\u30fc\u30f3\u306b\u81f3\u308b\u307e\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30e6\u30fc\u30b6\u30fc\u306e\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u5185\u90e8\u69cb\u9020: \u4ed5\u7d44\u307f<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001CSMA\/CD (Carrier Sense Multiple Access with Collision Detection) \u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u57fa\u3065\u3044\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u521d\u671f\u306e\u5f62\u5f0f\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u304c 1 \u672c\u306e\u30b1\u30fc\u30d6\u30eb\u306b\u63a5\u7d9a\u3055\u308c\u3001\u56de\u7dda\u304c\u7a7a\u3044\u3066\u3044\u308b\u3068\u304d\u306b\u5404\u30c7\u30d0\u30a4\u30b9\u304c\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u307e\u3057\u305f\u3002 2 \u3064\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u540c\u6642\u306b\u9001\u4fe1\u3059\u308b\u3068\u3001\u885d\u7a81\u304c\u767a\u751f\u3057\u3001\u30c7\u30d0\u30a4\u30b9\u306f\u9001\u4fe1\u3092\u505c\u6b62\u3057\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u671f\u9593\u5f85\u6a5f\u3057\u3066\u304b\u3089\u518d\u8a66\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>\u6700\u65b0\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u4e3b\u306b\u30b9\u30bf\u30fc \u30c8\u30dd\u30ed\u30b8\u3092\u4f7f\u7528\u3057\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30b9\u30a4\u30c3\u30c1\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u305f\u3081\u3001\u885d\u7a81\u306f\u307b\u307c\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306f\u3042\u308b\u30dd\u30fc\u30c8\u304b\u3089\u5225\u306e\u30dd\u30fc\u30c8\u306b\u9001\u4fe1\u3055\u308c\u3001\u53e4\u3044\u30d0\u30b9\u30d9\u30fc\u30b9\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u3088\u3046\u306b\u3059\u3079\u3066\u306e\u30dd\u30fc\u30c8\u3067\u5171\u6709\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3059\u3079\u3066\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30d5\u30ec\u30fc\u30e0\u306f\u3001\u30d7\u30ea\u30a2\u30f3\u30d6\u30eb\u3068\u958b\u59cb\u30d5\u30ec\u30fc\u30e0\u533a\u5207\u308a\u6587\u5b57\u3067\u59cb\u307e\u308a\u3001\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u3068\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3001\u30bf\u30a4\u30d7 \u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u7d9a\u304d\u3001\u30d5\u30ec\u30fc\u30e0 \u30c1\u30a7\u30c3\u30af \u30b7\u30fc\u30b1\u30f3\u30b9\u3067\u7d42\u308f\u308a\u307e\u3059\u3002\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u306f\u3001\u5404\u30c7\u30d0\u30a4\u30b9\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3067\u3042\u308b\u30e1\u30c7\u30a3\u30a2 \u30a2\u30af\u30bb\u30b9 \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb (MAC) \u30a2\u30c9\u30ec\u30b9\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u4e3b\u306a\u6a5f\u80fd\u306e\u5206\u6790<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u4e3b\u306a\u6a5f\u80fd\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/strong>: \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u901f\u5ea6\u306f 10 Mbps \u304b\u3089\u6700\u5927 100 Gbps\u3001\u305d\u3057\u3066\u305d\u308c\u4ee5\u4e0a\u306b\u9032\u5316\u3057\u307e\u3057\u305f\u3002<\/li>\n<li><strong>\u4fe1\u983c\u6027<\/strong>: \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u4fe1\u983c\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3001\u30b7\u30f3\u30d7\u30eb\u304b\u3064\u5805\u7262\u306a\u30c7\u30fc\u30bf\u4f1d\u9001\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u885d\u7a81\u691c\u77e5<\/strong>: \u521d\u671f\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3067\u306f\u3001CSMA\/CD \u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u885d\u7a81\u3092\u51e6\u7406\u3057\u307e\u3057\u305f\u3002\u6700\u65b0\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u306e\u4f7f\u7528\u3068\u5168\u4e8c\u91cd\u52d5\u4f5c\u306b\u3088\u308a\u3001\u885d\u7a81\u304c\u307b\u3068\u3093\u3069\u767a\u751f\u3057\u307e\u305b\u3093\u3002<\/li>\n<li><strong>\u30c8\u30dd\u30ed\u30b8\u30fc\u306e\u591a\u69d8\u6027<\/strong>: \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u3001\u30d0\u30b9\u3001\u30b9\u30bf\u30fc\u3001\u30c4\u30ea\u30fc\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u3055\u307e\u3056\u307e\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8981\u4ef6\u306b\u9069\u5fdc\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u6a19\u6e96\u5316<\/strong>: \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f IEEE 802.3 \u6a19\u6e96\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u3066\u304a\u308a\u3001\u7570\u306a\u308b\u30d9\u30f3\u30c0\u30fc\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u4e92\u63db\u6027\u3068\u76f8\u4e92\u904b\u7528\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u7a2e\u985e: \u8a73\u7d30\u8868<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u30b9\u30d4\u30fc\u30c9<\/th>\n<th>\u4e2d\u304f\u3089\u3044<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8(10BASE-T)<\/td>\n<td>10Mbps<\/td>\n<td>\u30c4\u30a4\u30b9\u30c8\u30da\u30a2<\/td>\n<\/tr>\n<tr>\n<td>\u30d5\u30a1\u30b9\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8(100BASE-TX)<\/td>\n<td>100Mbps<\/td>\n<td>\u30c4\u30a4\u30b9\u30c8\u30da\u30a2<\/td>\n<\/tr>\n<tr>\n<td>\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8(1000BASE-T)<\/td>\n<td>1Gbps<\/td>\n<td>\u30c4\u30a4\u30b9\u30c8\u30da\u30a2<\/td>\n<\/tr>\n<tr>\n<td>10\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8(10GBASE-T)<\/td>\n<td>10Gbps<\/td>\n<td>\u30c4\u30a4\u30b9\u30c8\u30da\u30a2\u3001\u30d5\u30a1\u30a4\u30d0\u30fc<\/td>\n<\/tr>\n<tr>\n<td>25\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/td>\n<td>25Gbps<\/td>\n<td>\u30d5\u30a1\u30a4\u30d0<\/td>\n<\/tr>\n<tr>\n<td>40\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/td>\n<td>40Gbps<\/td>\n<td>\u30d5\u30a1\u30a4\u30d0<\/td>\n<\/tr>\n<tr>\n<td>100\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/td>\n<td>100Gbps<\/td>\n<td>\u30d5\u30a1\u30a4\u30d0<\/td>\n<\/tr>\n<tr>\n<td>200\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/td>\n<td>200Gbps<\/td>\n<td>\u30d5\u30a1\u30a4\u30d0<\/td>\n<\/tr>\n<tr>\n<td>400\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8<\/td>\n<td>400Gbps<\/td>\n<td>\u30d5\u30a1\u30a4\u30d0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u4f7f\u7528\u65b9\u6cd5\u3001\u554f\u984c\u3001\u304a\u3088\u3073\u89e3\u6c7a\u7b56<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u4e3b\u306b\u3001\u5bb6\u5ead\u3001\u30aa\u30d5\u30a3\u30b9\u3001\u30c7\u30fc\u30bf \u30bb\u30f3\u30bf\u30fc\u306a\u3069\u306e\u30ed\u30fc\u30ab\u30eb \u30a8\u30ea\u30a2\u5185\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u3001\u30d7\u30ea\u30f3\u30bf\u30fc\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u5171\u6709\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u306f\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u554f\u984c\u304c\u306a\u3044\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u3089\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8f3b\u8f33\u3001\u9577\u3044\u30b1\u30fc\u30d6\u30eb\u306b\u3088\u308b\u4fe1\u53f7\u306e\u52a3\u5316\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u61f8\u5ff5\u306a\u3069\u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u3092\u4f7f\u7528\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5c0f\u3055\u306a\u30b3\u30ea\u30b8\u30e7\u30f3 \u30c9\u30e1\u30a4\u30f3\u306b\u5206\u5272\u3057\u305f\u308a\u3001\u30ea\u30d4\u30fc\u30bf\u30fc\u3084\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u9577\u8ddd\u96e2\u901a\u4fe1\u306b\u4f7f\u7528\u3057\u305f\u308a\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af (VPN) \u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u5b9f\u88c5\u3057\u305f\u308a\u3059\u308b\u306a\u3069\u3001\u9069\u5207\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u306b\u3088\u3063\u3066\u8efd\u6e1b\u3067\u304d\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002 \uff09\u3002<\/p>\n<h2>\u985e\u4f3c\u6280\u8853\u3068\u306e\u6bd4\u8f03<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u4e3b\u306b\u3001\u5bb6\u5ead\u3084\u30aa\u30d5\u30a3\u30b9\u74b0\u5883\u3067\u306f Wi-Fi \u3068\u7af6\u5408\u3057\u3001\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u30de\u30eb\u30c1\u30d7\u30ed\u30c8\u30b3\u30eb \u30e9\u30d9\u30eb \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0 (MPLS) \u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30c7\u30d5\u30a1\u30a4\u30f3\u30c9 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af (SDN) \u306a\u3069\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3068\u7af6\u5408\u3057\u307e\u3059\u3002 Wi-Fi \u306f\u30ef\u30a4\u30e4\u30ec\u30b9 \u30a2\u30af\u30bb\u30b9\u306e\u5229\u4fbf\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u901a\u5e38\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u9ad8\u901f\u3001\u4f4e\u9045\u5ef6\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u63a5\u7d9a\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 MPLS \u3068 SDN \u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u308b\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3068\u7ba1\u7406\u3082\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002<\/p>\n<h2>Ethernet\u306b\u95a2\u3059\u308b\u5c55\u671b\u3068\u5c06\u6765\u6280\u8853<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306f\u9032\u5316\u3092\u7d9a\u3051\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u306e\u5411\u4e0a\u3001\u9045\u5ef6\u306e\u77ed\u7e2e\u3001\u52b9\u7387\u306e\u5411\u4e0a\u3001\u65e2\u5b58\u306e\u6a5f\u5668\u3068\u306e\u4e0b\u4f4d\u4e92\u63db\u6027\u306e\u78ba\u4fdd\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u305f\u7814\u7a76\u958b\u767a\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u4eca\u5f8c\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u9032\u6b69\u306b\u306f\u3001\u6bce\u79d2 1 \u30c6\u30e9\u30d3\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u306e\u9054\u6210\u3092\u76ee\u6307\u3059\u30c6\u30e9\u30d3\u30c3\u30c8 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 (TbE) \u3084\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30b1\u30fc\u30d6\u30eb\u7d4c\u7531\u3067\u306e\u96fb\u529b\u4f9b\u7d66\u306e\u5897\u52a0\u3092\u53ef\u80fd\u306b\u3059\u308b\u30d1\u30ef\u30fc \u30aa\u30fc\u30d0\u30fc \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 (PoE) \u306e\u9032\u6b69\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u305d\u306e\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3068\u306e\u95a2\u9023\u4ed8\u3051<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30c7\u30fc\u30bf\u9001\u4fe1\u306e\u4ef2\u4ecb\u8005\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u5236\u5fa1\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u6a5f\u80fd\u306e\u5f37\u5316\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u304c\u63a5\u7d9a\u3055\u308c\u305f\u30c7\u30d0\u30a4\u30b9\u306e 1 \u3064\u3068\u306a\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u4ed6\u306e\u30c7\u30d0\u30a4\u30b9\u306e\u30c7\u30fc\u30bf \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3057\u3001\u30c7\u30fc\u30bf \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u63d0\u4f9b\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u5236\u5fa1\u3055\u308c\u305f\u30a2\u30af\u30bb\u30b9\u3092\u53ef\u80fd\u306b\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u95a2\u3059\u308b\u3055\u3089\u306a\u308b\u8cc7\u6599\u3068\u8a73\u7d30\u60c5\u5831\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>IEEE 802.3 \u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30b0\u30eb\u30fc\u30d7: <a href=\"http:\/\/www.ieee802.org\/3\/\" target=\"_new\" rel=\"noopener nofollow\">IEEE 802.3<\/a><\/li>\n<li>\u30b7\u30b9\u30b3\u306b\u3088\u308b\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u7d39\u4ecb: <a href=\"https:\/\/www.cisco.com\/c\/en\/us\/tech\/lan-switching\/ethernet.html\" target=\"_new\" rel=\"noopener nofollow\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30c6\u30af\u30ce\u30ed\u30b8\u30fc \u2013 Cisco<\/a><\/li>\n<li>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306b\u95a2\u3059\u308b\u8a73\u7d30\u30ac\u30a4\u30c9: <a href=\"https:\/\/www.computernetworkingnotes.com\/ccna-study-guide\/ethernet-tutorial-lan.html\" target=\"_new\" rel=\"noopener nofollow\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb \u2013 LAN\u3001\u30b1\u30fc\u30d6\u30eb\u3001\u30b3\u30cd\u30af\u30bf\u3001\u30b9\u30a4\u30c3\u30c1<\/a><\/li>\n<\/ul>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306f\u9032\u5316\u3057\u7d9a\u3051\u308b\u305f\u3081\u3001\u9593\u9055\u3044\u306a\u304f\u4e16\u754c\u4e2d\u306e\u30c7\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30d0\u30c3\u30af\u30dc\u30fc\u30f3 \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3067\u3042\u308a\u7d9a\u3051\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u306e\u30b7\u30f3\u30d7\u30eb\u3055\u3001\u591a\u7528\u9014\u6027\u3001\u4fe1\u983c\u6027\u306b\u3088\u308a\u3001\u5c0f\u898f\u6a21\u306a\u5bb6\u5ead\u7528\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u304b\u3089\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u5e83\u5927\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306b\u81f3\u308b\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u898f\u6a21\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3068\u3063\u3066\u512a\u308c\u305f\u9078\u629e\u80a2\u3068\u306a\u308a\u307e\u3059\u3002 OneProxy \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u5236\u5fa1\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u6069\u6075\u3092\u53d7\u3051\u306a\u304c\u3089\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u5805\u7262\u6027\u3092\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>","protected":false},"featured_media":468330,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477122","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Ethernet: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is Ethernet?","answer":"<p>Ethernet is a family of computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN), and wide area networks (WAN). It connects devices within a network, like computers, routers, and switches, allowing for data exchange through the implementation of specific Ethernet standards and protocols.<\/p>"},{"question":"Who invented Ethernet and when?","answer":"<p>Ethernet was first conceived in the early 1970s by Robert Metcalfe, a researcher at Xerox's Palo Alto Research Center (PARC). The official Ethernet standard, known as IEEE 802.3, was then published by the Institute of Electrical and Electronics Engineers (IEEE) in 1983.<\/p>"},{"question":"How does Ethernet work?","answer":"<p>Ethernet operates based on a protocol known as Carrier Sense Multiple Access with Collision Detection (CSMA\/CD). Modern Ethernet networks primarily use a star topology with an Ethernet switch at the center of the star. Every Ethernet frame starts with a preamble and a start frame delimiter, followed by destination and source addresses, type field, payload, and ends with a frame check sequence.<\/p>"},{"question":"What are the key features of Ethernet?","answer":"<p>Key features of Ethernet include scalability, reliability, collision detection, topological versatility, and standardization. Ethernet's speed has evolved from 10 Mbps to up to 100 Gbps and beyond, showing its adaptability to different network requirements.<\/p>"},{"question":"What types of Ethernet exist?","answer":"<p>Ethernet types range from the original 10BASE-T Ethernet (10 Mbps) to Fast Ethernet (100 Mbps), Gigabit Ethernet (1 Gbps), 10-Gigabit Ethernet, 25-Gigabit Ethernet, 40-Gigabit Ethernet, 100-Gigabit Ethernet, 200-Gigabit Ethernet, and 400-Gigabit Ethernet. The medium used for transmission varies from twisted pair cabling to fiber.<\/p>"},{"question":"What are the common problems associated with Ethernet and their solutions?","answer":"<p>Common problems with Ethernet include network congestion, signal degradation over long cable lengths, and security concerns. These can often be mitigated with appropriate network design, such as using switches to divide the network into smaller collision domains, using repeaters or fiber optics for long-distance communication, and implementing network security measures.<\/p>"},{"question":"How does Ethernet compare with similar technologies?","answer":"<p>While Wi-Fi offers the convenience of wireless access, Ethernet usually provides higher speeds, lower latency, and more reliable connections. Ethernet competes with technologies like Multi-Protocol Label Switching (MPLS) and Software Defined Networking (SDN) in larger networks, but these require more sophisticated infrastructure and management.<\/p>"},{"question":"What are the future prospects for Ethernet?","answer":"<p>Ethernet continues to evolve with research and development focusing on increasing data transfer rates, reducing latency, improving efficiency, and ensuring backward compatibility. Upcoming Ethernet advancements include Terabit Ethernet (TbE) and Power Over Ethernet (PoE) advancements.<\/p>"},{"question":"How are proxy servers used with Ethernet?","answer":"<p>In an Ethernet network, a proxy server could be one of the connected devices, managing data traffic for other devices on the network. Proxy servers can help enforce security policies, provide data caching to enhance performance, and allow for controlled access to the internet in an Ethernet network.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477122","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\/477122\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/468330"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477122"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}