{"id":195,"date":"2025-02-11T11:56:00","date_gmt":"2025-02-11T02:56:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=195"},"modified":"2025-10-09T11:16:10","modified_gmt":"2025-10-09T02:16:10","slug":"ip%e3%82%a2%e3%83%89%e3%83%ac%e3%82%b9%e3%81%a8%e3%82%b5%e3%83%96%e3%83%8d%e3%83%83%e3%83%88","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=195","title":{"rendered":"IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u306b\u306f\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u300d\u3068\u300c\u30db\u30b9\u30c8\u90e8\u300d\u304c\u3042\u308a\u3001\u3069\u3053\u307e\u3067\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u304b\u3092\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u4f7f\u3046\u306e\u304c <strong><span class=\"swl-marker mark_yellow\">\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af<\/span><\/strong> \u3067\u3059\u3002\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306f32\u30d3\u30c3\u30c8\u306e\u6570\u5024\u3067\u3001\u30d3\u30c3\u30c8\u300c1\u300d\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u3092\u3001\u30d3\u30c3\u30c8\u300c0\u300d\u304c\u30db\u30b9\u30c8\u90e8\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u30af\u30e9\u30b9C\u306e\u30a2\u30c9\u30ec\u30b9 <strong>192.168.10.5<\/strong> \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u304c24\u30d3\u30c3\u30c8\u306a\u306e\u3067\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306f <strong>255.255.255.0<\/strong> \u306b\u306a\u308a\u307e\u3059\u3002<br>\u8868\u8a18\u65b9\u6cd5\u306b\u306f\u6b21\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u8868\u8a18<\/strong>\uff1a192.168.10.0\/24<\/li>\n\n\n\n<li><strong>\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u8868\u8a18<\/strong>\uff1a192.168.10.0 255.255.255.0<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306b\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u3069\u3053\u304b\u3089\u3069\u3053\u307e\u3067\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u304b\u3092\u660e\u78ba\u306b\u533a\u5225\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30d6\u30cd\u30c3\u30c8\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30b5\u30d6\u30cd\u30c3\u30c8<\/span><\/strong>\u3068\u306f\u3001\u5927\u304d\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5c0f\u3055\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5206\u5272\u3059\u308b\u3053\u3068\u3067\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u306e\u30db\u30b9\u30c8\u90e8\u306e\u4e00\u90e8\u3092\u300c\u30b5\u30d6\u30cd\u30c3\u30c8\u90e8\u300d\u3068\u3057\u3066\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u52b9\u7387\u7684\u306b\u5206\u5272\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5fc5\u8981\u306a\u30db\u30b9\u30c8\u6570\u306b\u5fdc\u3058\u3066\u67d4\u8edf\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u8a2d\u8a08\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u30011\u3064\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b <strong>600\u53f0\u306e\u30db\u30b9\u30c8<\/strong> \u3092\u53ce\u5bb9\u3057\u305f\u3044\u5834\u5408\u3092\u8003\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30e9\u30b9C\u306e\u30a2\u30c9\u30ec\u30b9\u3067\u306f\u30db\u30b9\u30c8\u6570\u304c\u6700\u5927 <strong>254\u53f0<\/strong> \u306a\u306e\u3067\u8db3\u308a\u307e\u305b\u3093\u3002<br>\u30af\u30e9\u30b9B\u306e\u30a2\u30c9\u30ec\u30b9\u3067\u306f <strong>\u6700\u592765,534\u53f0<\/strong> \u3082\u53ce\u5bb9\u3067\u304d\u308b\u305f\u3081\u3001600\u53f0\u306b\u4f7f\u3046\u306e\u306f\u975e\u52b9\u7387\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5834\u5408\u3001\u30af\u30e9\u30b9B\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3044 <strong>\u30b5\u30d6\u30cd\u30c3\u30c8\u5316<\/strong> \u3057\u3066\u3001\u30db\u30b9\u30c8\u90e8\u3092\u9069\u5207\u306a\u30b5\u30a4\u30ba\u306b\u5206\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30db\u30b9\u30c8\u90e8\u3092 <strong>10\u30d3\u30c3\u30c8<\/strong> \u306b\u3057\u305f\u5834\u5408\u3001<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2\u00b9\u2070 = 1,024 \u901a\u308a<br>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3068\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u9664\u3044\u305f <strong>1,022\u53f0<\/strong> \u306e\u30db\u30b9\u30c8\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306a\u3089600\u53f0\u3092\u4f59\u88d5\u3092\u3082\u3063\u3066\u53ce\u5bb9\u3067\u304d\u3001\u52b9\u7387\u306e\u826f\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u4f7f\u308f\u308c\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u5316\u306e\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e5\u672c\u306e\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u6700\u3082\u591a\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u30af\u30e9\u30b9A\u307e\u305f\u306f\u30af\u30e9\u30b9B\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u30d9\u30fc\u30b9\u306b\u3001\u30db\u30b9\u30c8\u90e8\u3092 <strong>8\u30d3\u30c3\u30c8\u306b\u56fa\u5b9a\u3059\u308b\u65b9\u6cd5<\/strong> \u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5834\u5408\u30011\u3064\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3067 <strong>\u6700\u5927254\u53f0<\/strong> \u306e\u30db\u30b9\u30c8\u3092\u53ce\u5bb9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5ea6\u306a\u5927\u304d\u3055\u3067\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3067\u304d\u308b<\/li>\n\n\n\n<li>IP\u30a2\u30c9\u30ec\u30b9\u8a2d\u8a08\u3084\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8a2d\u8a08\u304c\u3057\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3067\u3082\u7ba1\u7406\u3057\u3084\u3059\u3044<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3044\u3046\u7406\u7531\u304b\u3089\u3001\u6a19\u6e96\u7684\u306a\u30b5\u30d6\u30cd\u30c3\u30c8\u8a2d\u8a08\u3068\u3057\u3066\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3067\u30af\u30e9\u30b9C\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6570\u306e\u4e0a\u9650\u304c256\u3057\u304b\u306a\u304f\u3001\u62e1\u5f35\u6027\u306b\u4e4f\u3057\u3044\u305f\u3081\u3001\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3042\u307e\u308a\u63a1\u7528\u3055\u308c\u307e\u305b\u3093\u3002\u30af\u30e9\u30b9C\u3092\u3055\u3089\u306b\u30b5\u30d6\u30cd\u30c3\u30c8\u5316\u3059\u308b\u4f8b\u3082\u5c11\u306a\u3044\u306e\u304c\u73fe\u5b9f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\u3067\u306f\u300c\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u3068\u30db\u30b9\u30c8\u90e8\u3092\u533a\u5225\u3059\u308b\u300d\u300c\u30db\u30b9\u30c8\u6570\u306f 2\u207f\u22122 \u3067\u8a08\u7b97\u3059\u308b\u300d\u300c\u5b9f\u52d9\u3067\u306f\u30db\u30b9\u30c8\u90e8\u30928\u30d3\u30c3\u30c8\u306b\u5207\u308b\u8a2d\u8a08\u304c\u591a\u3044\u300d\u3068\u3044\u3063\u305f\u30dd\u30a4\u30f3\u30c8\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30d6\u30cd\u30c3\u30c8\u6570\u306e\u7b97\u51fa\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30d6\u30cd\u30c3\u30c8\u306f\u3001\u30db\u30b9\u30c8\u90e8\u306e\u30d3\u30c3\u30c8\u3092\u501f\u308a\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u30b5\u30d6\u30cd\u30c3\u30c8\u6570\u306f\u300c\u30db\u30b9\u30c8\u90e8\u304b\u3089\u501f\u308a\u305f\u30d3\u30c3\u30c8\u6570\u300d\u3067\u6c7a\u307e\u308a\u3001\u8a08\u7b97\u5f0f\u306f<span class=\"swl-marker mark_yellow\"> <strong>2\u207f<\/strong><\/span> \u3067\u3059\u3002\u3053\u3053\u3067 n \u306f\u501f\u308a\u305f\u30d3\u30c3\u30c8\u6570\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u30db\u30b9\u30c8\u90e8\u304b\u30894\u30d3\u30c3\u30c8\u3092\u30b5\u30d6\u30cd\u30c3\u30c8\u90e8\u306b\u4f7f\u3063\u305f\u5834\u5408\u306f <strong>2\u2074 = 16<\/strong> \u3067\u300116\u500b\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a08\u7b97\u306f\u30af\u30e9\u30b9A\u3001B\u3001C\u3044\u305a\u308c\u3067\u3082\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30db\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u6570\u306e\u7b97\u51fa\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30b5\u30d6\u30cd\u30c3\u30c8\u3067\u5229\u7528\u3067\u304d\u308b\u30db\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u306e\u6570\u306f\u3001\u30db\u30b9\u30c8\u90e8\u306e\u30d3\u30c3\u30c8\u6570\u304b\u3089\u6c42\u3081\u307e\u3059\u3002\u8a08\u7b97\u5f0f\u306f <span class=\"swl-marker mark_yellow\"><strong>2\u207f &#8211; 2<\/strong> <\/span>\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u300c-2\u300d\u3068\u3057\u3066\u3044\u308b\u306e\u306f\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30db\u30b9\u30c8\u90e8\u304c\u3059\u3079\u30660 \u2192 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9<\/li>\n\n\n\n<li>\u30db\u30b9\u30c8\u90e8\u304c\u3059\u3079\u30661 \u2192 \u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e2\u3064\u306f\u30db\u30b9\u30c8\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u306a\u3044\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u30db\u30b9\u30c8\u90e8\u304c4\u30d3\u30c3\u30c8\u306a\u3089 <strong>2\u2074 &#8211; 2 = 14<\/strong> \u3067\u3001\u6700\u592714\u53f0\u306e\u30db\u30b9\u30c8\u3092\u53ce\u5bb9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306e\u7b97\u51fa\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CIDR\u8868\u8a18\uff08\/24\u3001\/27\u306a\u3069\uff09\u304b\u3089\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3092\u6c42\u3081\u308b\u5834\u5408\u306f\u3001\u30d3\u30c3\u30c8\u5358\u4f4d\u3067\u8003\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\/24 \u2192 255.255.255.0<\/li>\n\n\n\n<li>\/25 \u2192 255.255.255.128<\/li>\n\n\n\n<li>\/26 \u2192 255.255.255.192<\/li>\n\n\n\n<li>\/27 \u2192 255.255.255.224<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u6700\u5f8c\u306e\u30aa\u30af\u30c6\u30c3\u30c8\u304c <strong>128 \u2192 192 \u2192 224 \u2192 240 \u2192 248 \u2192 252 \u2192 254 \u2192 255<\/strong> \u3068\u5897\u3048\u3066\u3044\u304f\u898f\u5247\u3092\u899a\u3048\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3092\u7406\u89e3\u3057\u3066\u304a\u3051\u3070\u3001\/16 \u3084 \/20 \u3068\u3044\u3063\u305f\u30af\u30e9\u30b9A\u30fbB\u3067\u3082\u5fdc\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3068\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u306e\u7b97\u51fa\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u304c\u4e0e\u3048\u3089\u308c\u305f\u3068\u304d\u306b\u3001\u5c5e\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u7bc4\u56f2\u3092\u6c42\u3081\u308b\u624b\u9806\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u30eb\u30fc\u30eb\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30db\u30b9\u30c8\u90e8\u3092\u3059\u3079\u30660 \u2192 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9<\/li>\n\n\n\n<li>\u30db\u30b9\u30c8\u90e8\u3092\u3059\u3079\u30661 \u2192 \u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u899a\u3048\u3066\u304a\u3051\u3070\u3088\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5177\u4f53\u4f8b<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>192.168.1.90\/24<\/code>\n<ul class=\"wp-block-list\">\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\uff1a192.168.1.0<\/li>\n\n\n\n<li>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\uff1a192.168.1.255<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>10.40.1.19\/8<\/code>\n<ul class=\"wp-block-list\">\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\uff1a10.0.0.0<\/li>\n\n\n\n<li>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\uff1a10.255.255.255<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b5\u30d6\u30cd\u30c3\u30c8\u5316\u3057\u305f\u5834\u5408\u306e\u9ad8\u901f\u306a\u8a08\u7b97\u624b\u9806<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<code>192.168.1.90\/27<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af = 255.255.255.224<\/li>\n\n\n\n<li>256 &#8211; 224 = 32<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u306f32\u523b\u307f\u3067\u533a\u5207\u3089\u308c\u308b\uff080\u300132\u300164\u300196 \u2026\uff09<\/li>\n\n\n\n<li><code>192.168.1.90<\/code> \u306f64\uff5e95\u306e\u7bc4\u56f2\u306b\u542b\u307e\u308c\u308b<\/li>\n\n\n\n<li>\u7d50\u679c\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9 = 192.168.1.64\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9 = 192.168.1.95<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<code>172.16.20.101\/21<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af = 255.255.248.0<\/li>\n\n\n\n<li>256 &#8211; 248 = 8<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u306f8\u523b\u307f\uff080\u30018\u300116\u300124 \u2026\uff09<\/li>\n\n\n\n<li><code>172.16.20.101<\/code> \u306f16\uff5e23\u306e\u7bc4\u56f2\u306b\u542b\u307e\u308c\u308b<\/li>\n\n\n\n<li>\u7d50\u679c\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9 = 172.16.16.0\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9 = 172.16.23.255<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u300c256\u304b\u3089\u5f15\u3044\u3066\u533a\u5207\u308a\u5e45\u3092\u6c42\u3081\u308b\u300d\u65b9\u6cd5\u3092\u899a\u3048\u3066\u304a\u3051\u3070\u30012\u9032\u6570\u306b\u5909\u63db\u3057\u306a\u304f\u3066\u3082\u7d20\u65e9\u304f\u7b54\u3048\u3092\u51fa\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u306f\u300c2\u207f &#8211; 2 \u306e\u610f\u5473\u300d\u3084\u300c\/27 \u306e\u7bc4\u56f2\u306b\u5c5e\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3068\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u6c42\u3081\u308b\u300d\u3068\u3044\u3063\u305f\u554f\u984c\u304c\u983b\u51fa\u306a\u306e\u3067\u3001\u3053\u306e\u8a08\u7b97\u65b9\u6cd5\u3092\u8eab\u306b\u3064\u3051\u3066\u304a\u304f\u3068\u6709\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">VLSM\uff08\u53ef\u5909\u9577\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\uff09\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">VLSM<\/span><\/strong>\u3068\u306f Variable Length Subnet Mask \u306e\u7565\u3067\u3001\u65e5\u672c\u8a9e\u3067\u306f<strong><span class=\"swl-marker mark_yellow\">\u300c\u53ef\u5909\u9577\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u300d<\/span><\/strong>\u3068\u547c\u3070\u308c\u307e\u3059\u3002<br>1\u3064\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5206\u5272\u3059\u308b\u969b\u306b\u3001<strong><span class=\"swl-marker mark_yellow\">\u8907\u6570\u306e\u7570\u306a\u308b\u9577\u3055\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3092\u540c\u6642\u306b\u4f7f\u3048\u308b\u4ed5\u7d44\u307f<\/span><\/strong> \u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u3042\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4e00\u90e8\u306f <code>\/27<\/code>\uff08\u30db\u30b9\u30c8\u657030\u53f0\u307e\u3067\uff09\u3001\u5225\u306e\u90e8\u5206\u306f <code>\/30<\/code>\uff08\u30db\u30b9\u30c8\u65702\u53f0\u307e\u3067\uff09\u306b\u5206\u5272\u3059\u308b\u3068\u3044\u3063\u305f\u67d4\u8edf\u306a\u5272\u308a\u5f53\u3066\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a\u3001\u4f59\u5206\u306aIP\u30a2\u30c9\u30ec\u30b9\u3092\u7121\u99c4\u306b\u305b\u305a\u3001\u52b9\u7387\u7684\u306a\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3057\u3001\u6ce8\u610f\u70b9\u3068\u3057\u3066<span class=\"swl-marker mark_yellow\"> <strong>RIPv1\u306e\u3088\u3046\u306a\u30af\u30e9\u30b9\u30d5\u30eb\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306fVLSM\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093<\/strong><\/span>\u3002\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306e\u9577\u3055\u3092\u4f1d\u3048\u3089\u308c\u306a\u3044\u304b\u3089\u3067\u3059\u3002\u4e00\u65b9\u3001RIPv2\u3084OSPF\u3001EIGRP\u306a\u3069\u306e\u30af\u30e9\u30b9\u30ec\u30b9\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CIDR\uff08\u30af\u30e9\u30b9\u30ec\u30b9\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\uff09\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">CIDR<\/span><\/strong>\u306f Classless Inter-Domain Routing \u306e\u7565\u3067\u3001\u300c\u30af\u30e9\u30b9\u306b\u4f9d\u5b58\u3057\u306a\u3044\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\u300d\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<br>\u7279\u306b\u91cd\u8981\u306a\u306e\u306f <strong><span class=\"swl-marker mark_yellow\">\u7d4c\u8def\u96c6\u7d04<\/span><\/strong> \u306e\u5f79\u5272\u3067\u3001\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30921\u3064\u306e\u307e\u3068\u307e\u308a\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001<code>200.0.0.0\/24<\/code> \uff5e <code>200.0.7.0\/24<\/code> \u307e\u3067\u306e8\u3064\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u672c\u6765\u306a\u3089\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b8\u672c\u306e\u7d4c\u8def\u3092\u8f09\u305b\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057CIDR\u3092\u7528\u3044\u308b\u3068\u3001<code>200.0.0.0\/21<\/code> \u3068\u3057\u3066\u307e\u3068\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30bf\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u304c\u5c0f\u3055\u304f\u306a\u308b\uff08\u51e6\u7406\u304c\u8efd\u304f\u306a\u308b\uff09<\/li>\n\n\n\n<li>IP\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u3092\u6709\u52b9\u5229\u7528\u3067\u304d\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3044\u3046\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VLSM\u3068CIDR\u306e\u9055\u3044\u3092\u6574\u7406\u3059\u308b\u3068\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">VLSM<\/span><\/strong>\uff1a\u5927\u304d\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d30\u304b\u304f\u5206\u3051\u308b\uff08\u30db\u30b9\u30c8\u90e8\u306e\u30d3\u30c3\u30c8\u3092\u4f7f\u3046\uff09<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">CIDR<\/span><\/strong>\uff1a\u8907\u6570\u306e\u5c0f\u3055\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u307e\u3068\u3081\u308b\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u306e\u30d3\u30c3\u30c8\u3092\u8abf\u6574\u3059\u308b\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8<\/span><\/strong>\u3068\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">\u30b5\u30d6\u30cd\u30c3\u30c8\u90e8\u304c\u3059\u3079\u30660\u306e\u30b5\u30d6\u30cd\u30c3\u30c8<\/span><\/strong> \u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>172.16.0.0\/24<\/code> \u306f\u30b5\u30d6\u30cd\u30c3\u30c8\u90e8\u304c0\u30d3\u30c3\u30c8\u306a\u306e\u3067\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8<\/li>\n\n\n\n<li><code>172.16.10.0\/24<\/code> \u306f0\u30d3\u30c3\u30c8\u3067\u306f\u306a\u3044\u305f\u3081\u901a\u5e38\u306e\u30b5\u30d6\u30cd\u30c3\u30c8<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u69d8\u306b\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u90e8\u304c\u3059\u3079\u30661\u306e\u3082\u306e\u3082\u5b58\u5728\u3057\u307e\u3059\uff08\u4f8b\u3048\u3070 <code>172.16.255.0\/24<\/code>\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6614\u306f\u3053\u308c\u3089\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u306f\u300c\u5143\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3084\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3068\u7d1b\u3089\u308f\u3057\u3044\u300d\u3068\u3055\u308c\u3001\u5229\u7528\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u73fe\u5728\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3067\u306f\u554f\u984c\u306a\u304f\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cisco\u30eb\u30fc\u30bf\u3067\u306f <span class=\"swl-marker mark_yellow\"><strong>IOS 12.0\u4ee5\u964d\u3001<code>ip subnet-zero<\/code> \u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9<\/strong> <\/span>\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8\u3084\u30aa\u30fc\u30eb1\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u3082\u4f7f\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3057 <code>ip subnet-zero<\/code> \u304c\u7121\u52b9\u306a\u53e4\u3044\u6a5f\u5668\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8\u3068\u30aa\u30fc\u30eb1\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u9664\u5916\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u305d\u306e\u305f\u3081\u306b\u300c\u30b5\u30d6\u30cd\u30c3\u30c8\u6570\u304b\u3089 -2\u300d\u3068\u3059\u308b\u8a08\u7b97\u304c\u5fc5\u8981\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a66\u9a13\u5bfe\u7b56\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>VLSM<\/strong>\uff1a\u7570\u306a\u308b\u9577\u3055\u306e\u30de\u30b9\u30af\u3092\u4f75\u7528\u3057\u3066IP\u30a2\u30c9\u30ec\u30b9\u3092\u52b9\u7387\u5316<\/li>\n\n\n\n<li><strong>CIDR<\/strong>\uff1a\u8907\u6570\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u96c6\u7d04\u3057\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u7c21\u7565\u5316<\/li>\n\n\n\n<li><strong>\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8<\/strong>\uff1a\u73fe\u5728\u306f\u5229\u7528\u53ef\u80fd\uff08\u6614\u306f\u9664\u5916\u3055\u308c\u3066\u3044\u305f\u305f\u3081\u8a08\u7b97\u6642\u306b -2 \u304c\u5fc5\u8981\u3060\u3063\u305f\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3042\u305f\u308a\u306fCCNA\u8a66\u9a13\u3067\u6df7\u540c\u3057\u3084\u3059\u3044\u30c6\u30fc\u30de\u306a\u306e\u3067\u3001VLSM\uff1d\u7d30\u5206\u5316\u3001CIDR\uff1d\u96c6\u7d04\u3001\u30bc\u30ed\u30b5\u30d6\u30cd\u30c3\u30c8\uff1d\u5229\u7528\u53ef\u80fd\u3001\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u899a\u3048\u308b\u3068\u6574\u7406\u3057\u3084\u3059\u3044\u3067\u3059\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 data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/02\/IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"IP\u30a2\u30c8\u3099\u30ec\u30b9\u3068\u30b5\u30d5\u3099\u30cd\u30c3\u30c8\u306e\u57cb\u3081\u8fbc\u307f\u3002\"><\/object><a id=\"wp-block-file--media-3ff9e96b-9ec0-4a3b-96de-f71c866b7b9a\" href=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/02\/IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8.pdf\">IP\u30a2\u30c8\u3099\u30ec\u30b9\u3068\u30b5\u30d5\u3099\u30cd\u30c3\u30c8<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af IP\u30a2\u30c9\u30ec\u30b9\u306b\u306f\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u300d\u3068\u300c\u30db\u30b9\u30c8\u90e8\u300d\u304c\u3042\u308a\u3001\u3069\u3053\u307e\u3067\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u90e8\u304b\u3092\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u4f7f\u3046\u306e\u304c \u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af \u3067\u3059\u3002\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306f32\u30d3\u30c3\u30c8\u306e\u6570\u5024\u3067\u3001\u30d3\u30c3\u30c8\u300c1\u300d\u304c\u30cd\u30c3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[11],"tags":[],"class_list":["post-195","post","type-post","status-publish","format-standard","hentry","category-network"],"_links":{"self":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/195","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=195"}],"version-history":[{"count":6,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions"}],"predecessor-version":[{"id":617,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions\/617"}],"wp:attachment":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}