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mark_yellow\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64<\/span><\/strong>\u3067\u52d5\u4f5c\u3059\u308b\u4ee3\u8868\u7684\u306a\u6a5f\u5668\u3067\u3059\u3002\u7269\u7406\u5c64\u3067\u4fe1\u53f7\u3092\u53d7\u3051\u53d6\u308a\u3001\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3067\u30d5\u30ec\u30fc\u30e0\u306e\u30bf\u30a4\u30d7\u3092\u8b58\u5225\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3067IP\u30a2\u30c9\u30ec\u30b9\u3092\u53c2\u7167\u3057\u3066\u30d1\u30b1\u30c3\u30c8\u3092\u9069\u5207\u306a\u7d4c\u8def\u3078\u8ee2\u9001\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30eb\u30fc\u30bf\u306fLAN\u3068LAN\u3001\u3042\u308b\u3044\u306fLAN\u3068WAN\u3092\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u3001\u7570\u306a\u308b\u898f\u683c\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3064\u306a\u3050\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u4ee5\u5916\u306b\u3082\u3001ISDN\u3084ATM\u3068\u3044\u3063\u305f\u3055\u307e\u3056\u307e\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6301\u3066\u308b\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\u3068\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u3067\u306f\u300c\u3069\u306e\u6a5f\u5668\u304c\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\uff0f\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u5272\u3067\u304d\u308b\u304b\u300d\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30c7\u30d0\u30a4\u30b9<\/th><th>OSI\u53c2\u7167\u30e2\u30c7\u30eb<\/th><th>\u7279\u5fb4<\/th><th>\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\u5206\u5272<\/th><th>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3\u5206\u5272<\/th><\/tr><\/thead><tbody><tr><td>\u30eb\u30fc\u30bf<\/td><td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64<\/td><td>IP\u30a2\u30c9\u30ec\u30b9\u3092\u898b\u3066\u30d1\u30b1\u30c3\u30c8\u8ee2\u9001\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u53ef\u80fd<\/td><td>\u25cb<\/td><td>\u25cb<\/td><\/tr><tr><td>L3\u30b9\u30a4\u30c3\u30c1<\/td><td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64<\/td><td>IP\u3092\u898b\u3066\u8ee2\u9001\u3001LAN\u5185\u90e8\u3067\u9ad8\u901f\u51e6\u7406<\/td><td>\u25cb<\/td><td>\u25cb<\/td><\/tr><tr><td>L2\u30b9\u30a4\u30c3\u30c1<\/td><td>\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64<\/td><td>MAC\u30a2\u30c9\u30ec\u30b9\u3067\u8ee2\u9001\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u51e6\u7406<\/td><td>\u25cb<\/td><td>\u00d7\uff08\u203bVLAN\u8a2d\u5b9a\u3067\u5206\u5272\u53ef\u80fd\uff09<\/td><\/tr><tr><td>\u30d6\u30ea\u30c3\u30b8<\/td><td>\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64<\/td><td>MAC\u30a2\u30c9\u30ec\u30b9\u3067\u8ee2\u9001\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u51e6\u7406<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><tr><td>\u30ea\u30d4\u30fc\u30bf\u30cf\u30d6<\/td><td>\u7269\u7406\u5c64<\/td><td>\u4fe1\u53f7\u3092\u5897\u5e45\u3057\u5168\u30dd\u30fc\u30c8\u306b\u9001\u51fa<\/td><td>\u00d7<\/td><td>\u00d7<\/td><\/tr><tr><td>\u30ea\u30d4\u30fc\u30bf<\/td><td>\u7269\u7406\u5c64<\/td><td>\u4fe1\u53f7\u3092\u5897\u5e45\u30fb\u6574\u5f62\u3057\u3066\u4e2d\u7d99<\/td><td>\u00d7<\/td><td>\u00d7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u7279\u306b\u91cd\u8981\u306a\u306e\u306f\u6b21\u306e2\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">\u30b9\u30a4\u30c3\u30c1\u306f\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u5272\u3067\u304d\u308b\u304c\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u306f\u5206\u5272\u3067\u304d\u306a\u3044\uff08\u305f\u3060\u3057VLAN\u306a\u3089\u53ef\u80fd\uff09<\/span><\/strong><\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">\u30eb\u30fc\u30bf\u3068L3\u30b9\u30a4\u30c3\u30c1\u306f\u3001\u4e21\u65b9\u3068\u3082\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\u3068\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u5272\u3067\u304d\u308b<\/span><\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u3082\u300c\u3053\u306e\u6a5f\u5668\u306f\u30b3\u30ea\u30b8\u30e7\u30f3\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u5272\u3059\u308b\u304b\u300d\u300c\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u5272\u3067\u304d\u308b\u304b\u300d\u304c\u554f\u308f\u308c\u3084\u3059\u3044\u306e\u3067\u3001\u5fc5\u305a\u6574\u7406\u3057\u3066\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Layer2\u30b9\u30a4\u30c3\u30c1\u306e\u57fa\u672c\u6a5f\u80fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Layer2\u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3067\u52d5\u4f5c\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3067\u3059\u3002\u30d5\u30ec\u30fc\u30e0\u306e\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\u3092\u53c2\u7167\u3057\u3001\u9069\u5207\u306a\u30dd\u30fc\u30c8\u306b\u306e\u307f\u8ee2\u9001\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u7684\u306a\u901a\u4fe1\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u4ee3\u8868\u7684\u306a\u52d5\u4f5c\u3067\u3042\u308b <strong><span class=\"swl-marker mark_yellow\">\u30d5\u30e9\u30c3\u30c7\u30a3\u30f3\u30b0\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3001\u30a8\u30fc\u30b8\u30f3\u30b0<\/span><\/strong> \u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u3092\u8d77\u52d5\u3057\u305f\u76f4\u5f8c\u306f\u3001\u3069\u306e\u7aef\u672b\u304c\u3069\u306e\u30dd\u30fc\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u304b\u5206\u304b\u3089\u306a\u3044\u305f\u3081\u3001MAC\u30a2\u30c9\u30ec\u30b9\u30c6\u30fc\u30d6\u30eb\u306f\u7a7a\u306e\u72b6\u614b\u3067\u3059\u3002\u901a\u4fe1\u304c\u59cb\u307e\u308b\u3068\u3001\u30b9\u30a4\u30c3\u30c1\u306f\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u3001VLAN\u756a\u53f7\u3092\u8a18\u9332\u3057\u3001\u8ee2\u9001\u51e6\u7406\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d5\u30e9\u30c3\u30c7\u30a3\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u30db\u30b9\u30c8A\u304c\u30db\u30b9\u30c8C\u306b\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1\u3059\u308b\u3068\u3057\u307e\u3057\u3087\u3046\u3002\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\u306f\u300c0000.0000.0001\u300d\u3001\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\u306f\u300c0000.0000.0003\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u306f\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\u3092\u5b66\u7fd2\u3057\u307e\u3059\u304c\u3001\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\u304c\u30c6\u30fc\u30d6\u30eb\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">\u53d7\u4fe1\u3057\u305f\u30dd\u30fc\u30c8\u4ee5\u5916\u306e\u3059\u3079\u3066\u306e\u30dd\u30fc\u30c8\u306b\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1<\/span><\/strong> \u3057\u307e\u3059\u3002\u3053\u308c\u3092<strong><span class=\"swl-marker mark_yellow\">\u30d5\u30e9\u30c3\u30c7\u30a3\u30f3\u30b0<\/span><\/strong>\u3068\u547c\u3073\u307e\u3059\u3002\u5b9b\u5148\u306e\u30db\u30b9\u30c8C\u3060\u3051\u304c\u30d5\u30ec\u30fc\u30e0\u3092\u53d7\u4fe1\u3057\u3066\u51e6\u7406\u3057\u3001\u4ed6\u306e\u30db\u30b9\u30c8\u306f\u7834\u68c4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u5f8c\u3001\u30db\u30b9\u30c8C\u304c\u30db\u30b9\u30c8A\u306b\u8fd4\u4fe1\u3092\u9001\u308b\u3068\u3001\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\u300c0000.0000.0003\u300d\u3082\u30b9\u30a4\u30c3\u30c1\u306b\u5b66\u7fd2\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u5ea6\u306f\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\u300c0000.0000.0001\u300d\u304c\u30c6\u30fc\u30d6\u30eb\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30d5\u30ec\u30fc\u30e0\u306f <strong><span class=\"swl-marker mark_yellow\">\u5b9b\u5148\u30dd\u30fc\u30c8\u306b\u306e\u307f\u8ee2\u9001<\/span><\/strong> \u3055\u308c\u307e\u3059\u3002\u3053\u306e\u52d5\u4f5c\u3092<strong><span class=\"swl-marker mark_yellow\">\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/span><\/strong>\u3068\u547c\u3073\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u7121\u99c4\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6e1b\u3089\u3057\u3001\u901a\u4fe1\u306e\u52b9\u7387\u304c\u5927\u5e45\u306b\u6539\u5584\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a8\u30fc\u30b8\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u30c6\u30fc\u30d6\u30eb\u306f\u3001\u5b66\u7fd2\u3057\u305f\u60c5\u5831\u3092\u3044\u3064\u307e\u3067\u3082\u4fdd\u6301\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e00\u5b9a\u6642\u9593\uff08Cisco Catalyst\u3067\u306f\u6a19\u6e96\u3067300\u79d2\uff09\u901a\u4fe1\u304c\u306a\u3051\u308c\u3070\u3001\u305d\u306e\u30a8\u30f3\u30c8\u30ea\u306f\u524a\u9664\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u3092<strong><span class=\"swl-marker mark_yellow\">\u30a8\u30fc\u30b8\u30f3\u30b0<\/span><\/strong>\u3068\u547c\u3073\u307e\u3059\u3002\u30a8\u30fc\u30b8\u30f3\u30b0\u306b\u3088\u3063\u3066\u4e0d\u8981\u306a\u60c5\u5831\u3092\u6574\u7406\u3057\u3001\u30c6\u30fc\u30d6\u30eb\u3092\u5e38\u306b\u6700\u9069\u306a\u72b6\u614b\u306b\u4fdd\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d5\u30ec\u30fc\u30e0\u8ee2\u9001\u65b9\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u306b\u306f\u30d5\u30ec\u30fc\u30e0\u3092\u8ee2\u9001\u3059\u308b\u65b9\u5f0f\u304c3\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">\u30b9\u30c8\u30a2\u30a2\u30f3\u30c9\u30d5\u30a9\u30ef\u30fc\u30c9\u65b9\u5f0f<\/span><\/strong><br>\u30d5\u30ec\u30fc\u30e0\u5168\u4f53\u3092\u53d7\u4fe1\u3057\u3066\u304b\u3089FCS\u3067\u8aa4\u308a\u691c\u67fb\u3092\u884c\u3044\u3001\u554f\u984c\u306a\u3051\u308c\u3070\u8ee2\u9001\u3057\u307e\u3059\u3002\u6700\u3082\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u3001\u73fe\u5728\u306e\u4e3b\u6d41\u65b9\u5f0f\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">\u30ab\u30c3\u30c8\u30b9\u30eb\u30fc\u65b9\u5f0f<\/span><\/strong><br>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff08\u5148\u982d6\u30d0\u30a4\u30c8\uff09\u3060\u3051\u3092\u8aad\u3093\u3060\u3089\u3059\u3050\u8ee2\u9001\u3057\u307e\u3059\u3002\u9ad8\u901f\u3067\u3059\u304c\u3001\u30a8\u30e9\u30fc\u691c\u51fa\u3092\u884c\u308f\u306a\u3044\u305f\u3081\u54c1\u8cea\u306f\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u30d5\u30ea\u30fc\u65b9\u5f0f<\/span><\/strong><br>\u30d5\u30ec\u30fc\u30e0\u306e\u5148\u982d64\u30d0\u30a4\u30c8\u3092\u8aad\u3093\u3067\u304b\u3089\u8ee2\u9001\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u885d\u7a81\u306b\u3088\u308b\u4e0d\u5b8c\u5168\u306a\u30d5\u30ec\u30fc\u30e0\u3092\u3042\u308b\u7a0b\u5ea6\u6392\u9664\u3067\u304d\u307e\u3059\u3002\u901f\u5ea6\u3068\u54c1\u8cea\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u3063\u305f\u65b9\u5f0f\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u306f<strong><span class=\"swl-marker mark_yellow\">\u300c\u73fe\u5728\u306e\u4e00\u822c\u7684\u306a\u30b9\u30a4\u30c3\u30c1\u306f\u30b9\u30c8\u30a2\u30a2\u30f3\u30c9\u30d5\u30a9\u30ef\u30fc\u30c9\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u300d<\/span><\/strong>\u3068\u3044\u3046\u70b9\u304c\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Layer2\u30b9\u30a4\u30c3\u30c1\u306e\u7ba1\u7406\u8a2d\u5b9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u81ea\u4f53\u306fIP\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u305f\u306a\u304f\u3066\u3082\u30d5\u30ec\u30fc\u30e0\u8ee2\u9001\u304c\u53ef\u80fd\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u7ba1\u7406\u8005\u304c\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u8a2d\u5b9a\u5909\u66f4\u3084\u76e3\u8996\u3092\u884c\u3046\u306b\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u306b\u7ba1\u7406\u7528\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Catalyst\u30b9\u30a4\u30c3\u30c1\u306e\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u306b\u30db\u30b9\u30c8\u540d\u30fb\u7ba1\u7406IP\u30a2\u30c9\u30ec\u30b9\u30fb\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u8a2d\u5b9a\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Switch(config)# hostname TEST\nTEST(config)# interface vlan 1\nTEST(config-if)# ip address 192.168.1.250 255.255.255.0\nTEST(config-if)# no shutdown\nTEST(config)# ip default-gateway 192.168.1.254<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u7ba1\u7406\u8005\u306fIP\u30a2\u30c9\u30ec\u30b9\u300c192.168.1.250\u300d\u3067\u30b9\u30a4\u30c3\u30c1\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u3001\u5916\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u51fa\u3066\u3044\u304f\u5834\u5408\u306b\u306f\u300c192.168.1.254\u300d\u3092\u7d4c\u7531\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u306f<strong><span class=\"swl-marker mark_yellow\">\u300cL2\u30b9\u30a4\u30c3\u30c1\u306fIP\u30a2\u30c9\u30ec\u30b9\u304c\u306a\u304f\u3066\u3082\u30d5\u30ec\u30fc\u30e0\u3092\u8ee2\u9001\u3067\u304d\u308b\u304c\u3001\u7ba1\u7406\u306e\u305f\u3081\u306b\u306fIP\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u300d<\/span><\/strong>\u3068\u3044\u3046\u70b9\u304c\u554f\u308f\u308c\u3084\u3059\u3044\u306e\u3067\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30eb\u30fc\u30bf\u306e\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LAN\u306e\u4e2d\u3060\u3051\u3067\u3042\u308c\u3070\u3001\u30b9\u30a4\u30c3\u30c1\u304cMAC\u30a2\u30c9\u30ec\u30b9\u3092\u983c\u308a\u306b\u30d5\u30ec\u30fc\u30e0\u3092\u8ee2\u9001\u3059\u308b\u3053\u3068\u3067\u901a\u4fe1\u306f\u5b8c\u7d50\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u901a\u4fe1\u76f8\u624b\u304c\u5225\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u5834\u5408\u306b\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">\u30eb\u30fc\u30bf<\/span><\/strong> \u3082\u3057\u304f\u306f<span class=\"swl-marker mark_yellow\"> <strong>L3\u30b9\u30a4\u30c3\u30c1<\/strong><\/span> \u3092\u7d4c\u7531\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30db\u30b9\u30c8A\u304b\u3089\u30db\u30b9\u30c8B\u3078\u901a\u4fe1\u3059\u308b\u5834\u5408\u3092\u4f8b\u306b\u3001\u305d\u306e\u6d41\u308c\u3092\u8ffd\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u30db\u30b9\u30c8A\u304c\u5b9b\u5148\u3092\u78ba\u8a8d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8A\u306f\u3001\u81ea\u5206\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3092\u3082\u3068\u306b\u300c\u30db\u30b9\u30c8B\u306f\u81ea\u5206\u3068\u306f\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3044\u308b\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u76f4\u63a5\u30db\u30b9\u30c8B\u306b\u9001\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u307e\u305a <strong><span class=\"swl-marker mark_yellow\">\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\uff08\u30eb\u30fc\u30bf\u306eIP\u30a2\u30c9\u30ec\u30b9\uff09<\/span><\/strong> \u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3057\u3001Ethernet\u3067\u901a\u4fe1\u3059\u308b\u306b\u306fMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5fc5\u8981\u306a\u306e\u3067\u3001\u30db\u30b9\u30c8A\u306f\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3067 <strong><span class=\"swl-marker mark_yellow\">ARP\u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/strong> \u3092\u6d41\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u554f\u3044\u5408\u308f\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u30eb\u30fc\u30bf\u304c\u5fdc\u7b54<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30eb\u30fc\u30bf\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9Fa0\/1\u304cARP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u53d6\u308a\u3001\u300c\u305d\u306eIP\u306f\u81ea\u5206\u306eIP\u3060\u300d\u3068\u5224\u65ad\u3059\u308b\u3068\u3001<strong><span class=\"swl-marker mark_yellow\">ARP\u30ea\u30d7\u30e9\u30a4<\/span><\/strong> \u3092\u8fd4\u3057\u3066\u81ea\u5206\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u30db\u30b9\u30c8A\u306b\u901a\u77e5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3046\u3057\u3066\u30db\u30b9\u30c8A\u306f\u3001\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u5bfe\u5fdc\u3059\u308bMAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u3092\u30eb\u30fc\u30bf\u3078\u6e21\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u30eb\u30fc\u30bf\u304c\u30d1\u30b1\u30c3\u30c8\u3092\u51e6\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8A\u304b\u3089\u5c4a\u3044\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u30eb\u30fc\u30bf\u304c\u53d7\u3051\u53d6\u308b\u3068\u3001\u30d5\u30ec\u30fc\u30e0\u306e\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\u306f\u78ba\u304b\u306b\u81ea\u5206\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff08Fa0\/1\uff09\u306e\u3082\u306e\u3067\u3059\u304c\u3001IP\u30a2\u30c9\u30ec\u30b9\u3092\u898b\u308b\u3068\u5b9b\u5148\u306f\u81ea\u5206\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u3053\u3067\u30eb\u30fc\u30bf\u306f <span class=\"swl-marker mark_yellow\"><strong>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb<\/strong> <\/span>\u3092\u53c2\u7167\u3057\u3001\u5b9b\u5148IP\u304c\u3069\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u5c5e\u3059\u308b\u306e\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u5b9b\u5148\u306f\u300c192.168.2.0\/24\u300d\u3068\u3044\u3046\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5c5e\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u81ea\u8eab\u306eFa0\/0\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089\u8ee2\u9001\u3059\u3079\u304d\u3060\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u30db\u30b9\u30c8B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3057\u3001IP\u30d1\u30b1\u30c3\u30c8\u3092\u305d\u306e\u307e\u307e\u9001\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002Ethernet\u3067\u9001\u308b\u306b\u306f\u3001\u4eca\u5ea6\u306f\u30db\u30b9\u30c8B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u30eb\u30fc\u30bf\u306f\u307e\u305a\u81ea\u5206\u306eARP\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u8abf\u3079\u3001\u307e\u3060\u767b\u9332\u304c\u306a\u3051\u308c\u3070 <strong><span class=\"swl-marker mark_yellow\">ARP\u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/strong> \u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8B\u306f\u81ea\u5206\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u4e00\u81f4\u3057\u305f\u305f\u3081\u3001<strong><span class=\"swl-marker mark_yellow\">ARP\u30ea\u30d7\u30e9\u30a4<\/span><\/strong> \u3067MAC\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u30d1\u30b1\u30c3\u30c8\u3092\u8ee2\u9001<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3067\u30db\u30b9\u30c8B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3063\u305f\u30eb\u30fc\u30bf\u306f\u3001\u65b0\u3057\u3044Ethernet\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u6210\u3057\u3066\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a\u30db\u30b9\u30c8B\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n\n\n\n<li>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a\u30eb\u30fc\u30bf\u306eFa0\/0\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n\n\n\n<li>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a\u30db\u30b9\u30c8B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u5909\u308f\u3089\u306a\u3044\uff09<\/li>\n\n\n\n<li>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a\u30db\u30b9\u30c8A\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u5909\u308f\u3089\u306a\u3044\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306b\u3001<strong><span class=\"swl-marker mark_yellow\">MAC\u30a2\u30c9\u30ec\u30b9\u306f\u533a\u9593\u3054\u3068\u306b\u66f8\u304d\u63db\u3048\u3089\u308c\u308b<\/span><\/strong> \u306e\u306b\u5bfe\u3057\u3001<strong><span class=\"swl-marker mark_yellow\">IP\u30a2\u30c9\u30ec\u30b9\u306f\u9001\u4fe1\u5143\u304b\u3089\u5b9b\u5148\u307e\u3067\u5909\u308f\u3089\u306a\u3044<\/span><\/strong> \u3053\u3068\u304c\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8B\u304b\u3089A\u3078\u8fd4\u7b54\u3059\u308b\u5834\u5408\u3082\u3001\u540c\u3058\u4ed5\u7d44\u307f\u3067\u9006\u65b9\u5411\u306e\u51e6\u7406\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c7\u30d0\u30a4\u30b9\u3068OSI\u53c2\u7167\u30e2\u30c7\u30eb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30b9\u30a4\u30c3\u30c1\u306fL2\u6a5f\u5668\u3060\u304b\u3089\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3057\u304b\u898b\u306a\u3044\u300d\u300c\u30eb\u30fc\u30bf\u306fL3\u6a5f\u5668\u3060\u304b\u3089\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3057\u304b\u898b\u306a\u3044\u300d\u3068\u8a00\u308f\u308c\u307e\u3059\u304c\u3001\u6b63\u78ba\u306b\u306f\u305d\u308c\u305e\u308c\u6b21\u306e\u3088\u3046\u306b\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30b9\u30a4\u30c3\u30c1<\/strong>\uff1a\u30d5\u30ec\u30fc\u30e0\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u3001\u7269\u7406\u5c64\uff08L1\uff09\u3068\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\uff08L2\uff09\u3092\u898b\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30eb\u30fc\u30bf<\/strong>\uff1a\u30d1\u30b1\u30c3\u30c8\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u3001\u7269\u7406\u5c64\uff08L1\uff09\u3001\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\uff08L2\uff09\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\uff08L3\uff09\u3092\u898b\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3064\u307e\u308a\u300c\u30eb\u30fc\u30bf\u306f\u7b2c\u4e09\u5c64\u307e\u3067\u3092\u78ba\u8a8d\u3057\u3066\u3044\u308b\u300d\u3068\u8003\u3048\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30db\u30b9\u30c8\u306b\u304a\u3051\u308b\u975e\u30ab\u30d7\u30bb\u30eb\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8\u304c\u901a\u4fe1\u3092\u53d7\u4fe1\u3057\u305f\u5834\u5408\u3001Ethernet\u30d5\u30ec\u30fc\u30e0\u3092\u7269\u7406\u5c64\u3067\u53d7\u3051\u53d6\u308a\u3001\u9806\u306b\u4e0a\u4f4d\u5c64\u3078\u6e21\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3067\u30d5\u30ec\u30fc\u30e0\u30d8\u30c3\u30c0\u3092\u5916\u3059<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3067IP\u30d8\u30c3\u30c0\u3092\u5916\u3059<\/li>\n\n\n\n<li>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3067TCP\/UDP\u30d8\u30c3\u30c0\u3092\u5916\u3059<\/li>\n\n\n\n<li>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u6700\u7d42\u7684\u306a\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u300c\u975e\u30ab\u30d7\u30bb\u30eb\u5316\u300d\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u7d4c\u3066\u3001\u6700\u7d42\u7684\u306b\u4eba\u9593\u304c\u753b\u9762\u3067\u78ba\u8a8d\u3067\u304d\u308b\u5f62\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u306f<strong><span class=\"swl-marker mark_yellow\">\u300cMAC\u30a2\u30c9\u30ec\u30b9\u306f\u533a\u9593\u3054\u3068\u306b\u5909\u308f\u308b\u304c\u3001IP\u30a2\u30c9\u30ec\u30b9\u306f\u5909\u308f\u3089\u306a\u3044\u300d\u300c\u30eb\u30fc\u30bf\u306f\u7b2c3\u5c64\u307e\u3067\u898b\u3066\u51e6\u7406\u3059\u308b\u300d<\/span><\/strong>\u3068\u3044\u3063\u305f\u30dd\u30a4\u30f3\u30c8\u304c\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u306e\u3067\u3001\u62bc\u3055\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u25c6\u307e\u3068\u3081\u30b9\u30e9\u30a4\u30c9<\/h2>\n\n\n\n<div 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