{"id":2099,"date":"2020-04-08T15:06:35","date_gmt":"2020-04-08T06:06:35","guid":{"rendered":"https:\/\/www.seraku.co.jp\/tectec-note\/?p=2099"},"modified":"2021-08-30T16:08:37","modified_gmt":"2021-08-30T07:08:37","slug":"network-layer","status":"publish","type":"post","link":"https:\/\/www.seraku.co.jp\/tectec-note\/industry\/network-layer\/","title":{"rendered":"\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3068\u306f\uff1fOSI\u53c2\u7167\u30e2\u30c7\u30eb\u3092\u56f3\u89e3\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3067\u306f\u3001\u968e\u5c64\u304c7\u968e\u5c64\u306b\u7d30\u5206\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e7\u968e\u5c64\u306e\u4e2d\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u306e\u5f79\u5272\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 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IPv4\u30fb\u30fb\u30fb\u30fb192.168.1.100\u3000\uff0810\u9032\u6570\u8868\u8a18\uff09<br> IPv6\u30fb\u30fb\u30fb\u30fb2001:0db8:bd05:01d2:288a:1fc0:0001:10ee\u3000\uff0816\u9032\u6570\u8868\u8a18\uff09<\/p>\n\n\n\n<ul class=\"point\"><li class=\"pointtitle\">CHECK\u30dd\u30a4\u30f3\u30c8<\/li><div class=\"pointbg\"><li class=\"pointitems\">IP\u30a2\u30c9\u30ec\u30b9\u3092\u8a8d\u8b58\u3057\u3066\u901a\u4fe1\u3092\u884c\u3063\u3066\u3044\u308b\u3002<\/li><li class=\"pointitems\">\u9069\u5207\u306a\u7d4c\u8def\u9078\u629e\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u69d8\u3005\u306a\u30eb\u30fc\u30eb\u304c\u6c7a\u3081\u3089\u308c\u3066\u3044\u308b\u3002<\/li><\/div><\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"240\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/d7dbcef0bf30c3386e5855e7c4741601.jpg\" alt=\"\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3068\u306f\" class=\"wp-image-2449\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/d7dbcef0bf30c3386e5855e7c4741601.jpg 1200w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/d7dbcef0bf30c3386e5855e7c4741601-768x154.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"1660\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_01-1.jpg\" alt=\"\" class=\"wp-image-2260\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_01-1.jpg 1200w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_01-1-768x1062.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption>\u56f3\u306e\u3088\u3046\u306b\u3001\u7b2c3\u5c64\u306e\u6a5f\u5668\u3067\u3042\u308b\u30eb\u30fc\u30bf\u3092\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u3067IP\u30a2\u30c9\u30ec\u30b9\u3067\u5b9b\u5148\u3092\u898b\u3066\u901a\u4fe1\u3092\u884c\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u306e\u4e3b\u306a\u5f79\u5272<\/h3>\n\n\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3067\u306f\u3001\u6b21\u306e\u3053\u3068\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u901a\u4fe1<\/h4>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3067\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u540c\u58eb\u3092\u76f8\u4e92\u306b\u63a5\u7d9a\u3057\u3066\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3067\u306e\u901a\u4fe1\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">IP\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066<\/h4>\n\n\n\n<p>\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3067\u306f\u901a\u4fe1\u76f8\u624b\u3092\u7279\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3068\u3057\u3066IP\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066\u3092\u5b9a\u7fa9\u3057\u30c7\u30fc\u30bf\u306e\u9001\u4fe1\u5143\u3084\u5b9b\u5148\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066\u901a\u4fe1\u3092\u884c\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3067\u306e\u901a\u4fe1<\/h4>\n\n\n\n<p>\u9001\u4fe1\u5143\u304b\u3089\u5b9b\u5148\u307e\u3067\u306e\u901a\u4fe1\u7d4c\u8def\u3067\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306a\u3069\u306f\u3001\u5404\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306b\u3042\u308b\u30eb\u30fc\u30bf\uff08\u6a5f\u5668\uff09\u304c\u30eb\u30fc\u30c8\uff08\u7d4c\u8def\uff09\u3092\u9078\u629e\u3057\u3066\u30d0\u30b1\u30c4\u30ea\u30ec\u30fc\u306e\u3088\u3046\u306b\u30c7\u30fc\u30bf\u306e\u8ee2\u9001\u3092\u884c\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u306ePDU\uff08protocol data unit\uff09\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u3067\u3042\u308a\u3001\u69cb\u9020\u3092\u898f\u683c\u3068\u3057\u3066\u5b9a\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 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class=\"wp-block-table\"><tbody><tr bgcolor=\"#eeeeee\"><td class=\"items\"><b>\u540d\u79f0<\/b><\/td><td><b>\u30eb\u30fc\u30bf<\/b><\/td><td><b>L3\u30b9\u30a4\u30c3\u30c1<\/b><\/td><\/tr><tr><td bgcolor=\"#eeeeee\">\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u51e6\u7406\u65b9\u6cd5<\/td><td>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u51e6\u7406<\/td><td>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3067\u51e6\u7406<\/td><\/tr><tr><td bgcolor=\"#eeeeee\">\u63a5\u7d9a\u30dd\u30fc\u30c8\u6570<\/td><td>\u5c11\u306a\u3044<\/td><td>\u591a\u3044<\/td><\/tr><\/tbody><\/table>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"504\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_02.jpg\" alt=\"\u30eb\u30fc\u30bf\u3084L3\u30b9\u30a4\u30c3\u30c1\" class=\"wp-image-2107\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_02.jpg 1200w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/network-layer_img_02-768x323.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption>\u30eb\u30fc\u30bf:Cisco\u793e1800\u30b7\u30ea\u30fc\u30ba<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081\uff08\u4eca\u65e5\u306e4\u304b\u6761\uff09<\/h2>\n\n\n\n<ol class=\"point\"><div class=\"pointbg\"><li class=\"pointitems\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u306fOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u7b2c3\u5c64\uff08L3\uff09\u306b\u4f4d\u7f6e\u3057\u3066\u304a\u308aPDU\u306f\u300c\u30d1\u30b1\u30c3\u30c8\u300d\u3068\u306a\u308b\u3002<\/li><li class=\"pointitems\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3067\u306f\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3067\u901a\u4fe1\u3092\u3059\u308b\u305f\u3081\u306e\u30eb\u30fc\u30eb\u304c\u6c7a\u3081\u3089\u308c\u3066\u3044\u308b\u3002<\/li><li 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