{"id":183,"date":"2025-02-11T10:55:00","date_gmt":"2025-02-11T01:55:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=183"},"modified":"2025-10-09T10:53:42","modified_gmt":"2025-10-09T01:53:42","slug":"ethernet-lan%ef%bc%88%e3%83%95%e3%83%ac%e3%83%bc%e3%83%a0%e3%81%a8mac%e3%82%a2%e3%83%89%e3%83%ac%e3%82%b9%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=183","title":{"rendered":"Ethernet LAN\uff08\u30d5\u30ec\u30fc\u30e0\u3068MAC\u30a2\u30c9\u30ec\u30b9\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u3068\u306f\u4f55\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0<\/span><\/strong>\u3068\u306f\u3001LAN\u306e\u4e2d\u3067\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\u304c\u3084\u308a\u53d6\u308a\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u308b\u300c\u30c7\u30fc\u30bf\u306e\u5165\u308c\u7269\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u4f7f\u3046\u8a00\u8449\u3067\u306f\u300c\u30d1\u30b1\u30c3\u30c8\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u304c\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3067\u306f\u300c\u30d5\u30ec\u30fc\u30e0\u300d\u3068\u3044\u3046\u547c\u3073\u65b9\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u7279\u306b\u91cd\u8981\u306a\u306e\u304c <strong><span class=\"swl-marker mark_yellow\">Ethernet\u2161\u30d5\u30ec\u30fc\u30e0\uff08DIX\u4ed5\u69d8\uff09<\/span><\/strong> \u3068 <strong><span class=\"swl-marker mark_yellow\">IEEE802.3\u30d5\u30ec\u30fc\u30e0<\/span><\/strong> \u3067\u3059\u3002\u4eca\u65e5\u6700\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u306f Ethernet\u2161\u30d5\u30ec\u30fc\u30e0\u3067\u3001\u4e00\u822c\u7684\u306b\u300c\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u300d\u3068\u8a00\u3048\u3070\u3053\u3061\u3089\u3092\u6307\u3057\u307e\u3059\u3002TCP\/IP\u306e\u901a\u4fe1\u3067\u306f\u307b\u307c\u5fc5\u305a Ethernet\u2161 \u304c\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u53e4\u3044\u74b0\u5883\uff08Netware \u3084 NetBIOS\uff09\u3067\u306f IEEE802.3 \u304c\u767b\u5834\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d5\u30ec\u30fc\u30e0\u306e\u69cb\u9020<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30ec\u30fc\u30e0\u306f\u3001\u624b\u7d19\u306e\u5c01\u7b52\u306e\u3088\u3046\u306b\u3044\u304f\u3064\u304b\u306e\u300c\u6b04\u300d\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u6b04\u306b\u306f\u3001\u8ab0\u5b9b\u3066\u306a\u306e\u304b\u3001\u8ab0\u304b\u3089\u9001\u3089\u308c\u305f\u306e\u304b\u3001\u3069\u3093\u306a\u5185\u5bb9\u304c\u5165\u3063\u3066\u3044\u308b\u306e\u304b\u3068\u3044\u3063\u305f\u60c5\u5831\u304c\u66f8\u304d\u8fbc\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30d5\u30a3\u30fc\u30eb\u30c9<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u30d7\u30ea\u30a2\u30f3\u30d6\u30eb<\/td><td>\u30d5\u30ec\u30fc\u30e0\u306e\u59cb\u307e\u308a\u3092\u77e5\u3089\u305b\u308b\u30d3\u30c3\u30c8\u5217\u3002IEEE802.3\u3067\u306f7\u30d0\u30a4\u30c8\u304c\u30d7\u30ea\u30a2\u30f3\u30d6\u30eb\u3001\u6700\u5f8c\u306e1\u30d0\u30a4\u30c8\u304cSFD\u3002\u901a\u4fe1\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u5408\u308f\u305b\u308b\u5f79\u5272\u304c\u3042\u308b\u3002<\/td><\/tr><tr><td>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9<\/td><td>\u9001\u308a\u5148\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5165\u308b\u3002\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\uff081\u5bfe1\uff09\u3001\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\uff08\u30b0\u30eb\u30fc\u30d7\u5b9b\uff09\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\uff08\u5168\u54e1\u5b9b\uff09\u304c\u3053\u3053\u3067\u5224\u5225\u3055\u308c\u308b\u3002<\/td><\/tr><tr><td>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9<\/td><td>\u9001\u4fe1\u3057\u305f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306eNIC\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3002<\/td><\/tr><tr><td>\u30bf\u30a4\u30d7\uff0f\u9577\u3055<\/td><td>Ethernet\u2161\u3067\u306f\u300c\u30bf\u30a4\u30d7\u300d\u3068\u3057\u3066\u4e0a\u4f4d\u5c64\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u8b58\u5225\uff08\u4f8b: 0x0800=IPv4\u30010x0806=ARP\uff09\u3002IEEE802.3\u3067\u306f\u300c\u9577\u3055\u300d\u3092\u793a\u3059\u3002<\/td><\/tr><tr><td>\u30c7\u30fc\u30bf<\/td><td>\u5b9f\u969b\u306e\u4e2d\u8eab\u300246\u30d0\u30a4\u30c8\u4ee5\u4e0a1500\u30d0\u30a4\u30c8\u4ee5\u4e0b\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u77ed\u3044\u5834\u5408\u306f\u300c\u30d1\u30c7\u30a3\u30f3\u30b0\u300d\u3068\u547c\u3070\u308c\u308b0\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/td><\/tr><tr><td>FCS<\/td><td>\u53d7\u4fe1\u30c7\u30fc\u30bf\u306b\u8aa4\u308a\u304c\u306a\u3044\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u306e\u9818\u57df\u3002CRC\u3068\u3044\u3046\u8a08\u7b97\u5024\u304c\u5165\u308b\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u8a66\u9a13\u306b\u51fa\u3084\u3059\u3044\u306e\u306f <strong><span class=\"swl-marker mark_yellow\">\u6700\u5c0f64\u30d0\u30a4\u30c8\u30fb\u6700\u59271518\u30d0\u30a4\u30c8<\/span><\/strong> \u3068\u3044\u3046\u30d5\u30ec\u30fc\u30e0\u30b5\u30a4\u30ba\u306e\u898f\u5247\u3067\u3059\u3002\u3082\u305764\u30d0\u30a4\u30c8\u306b\u6e80\u305f\u306a\u3044\u3068\u3001\u885d\u7a81\u691c\u51fa\u306e\u4ed5\u7d44\u307f\u304c\u6b63\u3057\u304f\u50cd\u304b\u306a\u3044\u305f\u3081\u3001\u5fc5\u305a\u30d1\u30c7\u30a3\u30f3\u30b0\u3067\u8abf\u6574\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30bf\u30a4\u30d7\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4ee3\u8868\u4f8b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30bf\u30a4\u30d7\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u300c\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u4e2d\u8eab\u306f\u4f55\u306e\u901a\u4fe1\u304b\u300d\u3092\u77e5\u3089\u305b\u308b\u5927\u4e8b\u306a\u6b04\u3067\u3059\u3002\u7279\u306b\u4ee5\u4e0b\u306e\u5024\u306f\u8a66\u9a13\u3067\u899a\u3048\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30bf\u30a4\u30d7\u30b3\u30fc\u30c9<\/th><th>\u30d7\u30ed\u30c8\u30b3\u30eb<\/th><\/tr><\/thead><tbody><tr><td>0x0800<\/td><td>IPv4<\/td><\/tr><tr><td>0x0806<\/td><td>ARP<\/td><\/tr><tr><td>0x86dd<\/td><td>IPv6<\/td><\/tr><tr><td>0x8100<\/td><td>VLAN\uff08IEEE802.1Q\uff09<\/td><\/tr><tr><td>0x8137<\/td><td>IPX<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">IPv4\uff080x0800\uff09\u3001ARP\uff080x0806\uff09\u3001IPv6\uff080x86dd\uff09<\/span><\/strong>\u306f\u5fc5\u305a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">MAC\u30a2\u30c9\u30ec\u30b9\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">MAC\u30a2\u30c9\u30ec\u30b9<\/span><\/strong>\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u6a5f\u5668\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u4e16\u754c\u306b\u4e00\u3064\u3060\u3051\u306e\u756a\u53f7\u3067\u3001\u307e\u308b\u3067\u300c\u6a5f\u5668\u306e\u6307\u7d0b\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002PC\u306eLAN\u30ab\u30fc\u30c9\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u306e\u30dd\u30fc\u30c8\u306a\u3069\u3001\u305d\u308c\u305e\u308c\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MAC\u30a2\u30c9\u30ec\u30b9\u306f48\u30d3\u30c3\u30c8\uff086\u30d0\u30a4\u30c8\uff09\u3067\u3067\u304d\u3066\u304a\u308a\u300116\u9032\u6570\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u300c00-17-94-xx-xx-xx\u300d\u306e\u3088\u3046\u306b\u66f8\u304b\u308c\u3001\u4e0a\u4f4d24\u30d3\u30c3\u30c8\u306f\u30e1\u30fc\u30ab\u30fc\u3092\u793a\u3059 <strong><span class=\"swl-marker mark_yellow\">\u30d9\u30f3\u30c0\u30fc\u30b3\u30fc\u30c9\uff08OUI\uff09<\/span><\/strong>\u3001\u4e0b\u4f4d24\u30d3\u30c3\u30c8\u306f\u30e1\u30fc\u30ab\u30fc\u304c\u500b\u5225\u306b\u5272\u308a\u5f53\u3066\u308b\u756a\u53f7\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u300c00-17-94\u300d\u3092\u8abf\u3079\u308b\u3068 Cisco Systems \u3060\u3068\u5206\u304b\u308b\u3088\u3046\u306b\u3001OUI\u3092\u305f\u3069\u308b\u3053\u3068\u3067\u6a5f\u5668\u306e\u30e1\u30fc\u30ab\u30fc\u3092\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002\u5927\u4f01\u696d\u306f\u8907\u6570\u306eOUI\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">U\/L\u30d3\u30c3\u30c8\u3068I\/G\u30d3\u30c3\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MAC\u30a2\u30c9\u30ec\u30b9\u306e\u6700\u521d\u306e\u30d0\u30a4\u30c8\u306b\u306f\u7279\u5225\u306a\u610f\u5473\u3092\u6301\u3064\u30d3\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">U\/L\u30d3\u30c3\u30c8\uff087\u30d3\u30c3\u30c8\u76ee\uff09<\/span><\/strong><br>0 \u306e\u5834\u5408\u306f\u300c\u4e16\u754c\u5171\u901a\uff08\u30b0\u30ed\u30fc\u30d0\u30eb\uff09\u300d\u30011 \u306e\u5834\u5408\u306f\u300c\u30ed\u30fc\u30ab\u30eb\uff08\u7ba1\u7406\u8005\u304c\u72ec\u81ea\u306b\u8a2d\u5b9a\u53ef\u80fd\uff09\u300d\u3092\u793a\u3057\u307e\u3059\u3002\u901a\u5e38\u306f 0 \u3067\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">I\/G\u30d3\u30c3\u30c8\uff088\u30d3\u30c3\u30c8\u76ee\uff09<\/span><\/strong><br>0 \u306e\u5834\u5408\u306f\u300c\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\uff081\u5bfe1\u306e\u901a\u4fe1\uff09\u300d\u30011 \u306e\u5834\u5408\u306f\u300c\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u307e\u305f\u306f\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\uff081\u5bfe\u591a\u306e\u901a\u4fe1\uff09\u300d\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p 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