{"id":304,"date":"2025-05-14T00:29:00","date_gmt":"2025-05-13T15:29:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=304"},"modified":"2025-10-16T14:52:17","modified_gmt":"2025-10-16T05:52:17","slug":"qos%ef%bc%88%e8%bc%bb%e8%bc%b3%e5%9b%9e%e9%81%bf%e6%8a%80%e8%a1%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=304","title":{"rendered":"QoS\uff08\u8f3b\u8f33\u56de\u907f\u6280\u8853\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">WRED\uff08Weighted Random Early Detection\uff09\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">WRED\uff08Weighted Random Early Detection\uff09<\/span><\/strong>\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3067\u8f3b\u8f33\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u3001\u51fa\u529b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30ad\u30e5\u30fc\u306b\u305f\u307e\u3063\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u5ec3\u68c4\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001TCP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u300c\u56de\u7dda\u304c\u6df7\u96d1\u3057\u59cb\u3081\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u30b7\u30b0\u30ca\u30eb\u3092\u4e0e\u3048\u3001\u9001\u4fe1\u5074\u304c\u30a6\u30a3\u30f3\u30c9\u30a6\u30b5\u30a4\u30ba\u3092\u7e2e\u5c0f\u3057\u305f\u308a\u518d\u9001\u5236\u5fa1\u3092\u884c\u3063\u305f\u308a\u3057\u3066\u3001\u8f3b\u8f33\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u30ad\u30e5\u30fc\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u3063\u3066\u304b\u3089\u4e00\u6c17\u306b\u30c9\u30ed\u30c3\u30d7\u304c\u767a\u751f\u3059\u308b\u4e8b\u614b\u3092\u907f\u3051\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u3092\u5b89\u5b9a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WRED\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u306b\u6a19\u6e96\u3067\u5229\u7528\u3055\u308c\u308b\u4ed5\u7d44\u307f\u304c<span class=\"swl-marker mark_yellow\"><strong>\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7<\/strong><\/span>\u3067\u3059\u3002\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7\u3067\u306f\u3001\u30ad\u30e5\u30fc\u304c\u6e80\u676f\u306b\u306a\u3063\u305f\u77ac\u9593\u306b\u3001\u305d\u308c\u4ee5\u964d\u5230\u7740\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u3059\u3079\u3066\u5ec3\u68c4\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u591a\u304f\u306eTCP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u540c\u6642\u306b\u518d\u9001\u3092\u884c\u3046\u305f\u3081\u3001\u56de\u7dda\u5e2f\u57df\u306e\u6709\u52b9\u5229\u7528\u304c\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u308a\u3001\u901a\u4fe1\u5168\u4f53\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RED\u3068WRED\u306e\u9055\u3044<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">RED\uff08Random Early Detection<\/span><\/strong>\uff09\u306f\u3001\u30ad\u30e5\u30fc\u304c\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u305f\u6642\u306b\u30e9\u30f3\u30c0\u30e0\u306b\u30d1\u30b1\u30c3\u30c8\u3092\u6368\u3066\u308b\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u512a\u5148\u5ea6\u306f\u8003\u616e\u3057\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001WRED\u306f\u540d\u524d\u306e\u901a\u308a\u300cWeighted\uff08\u91cd\u307f\u4ed8\u304d\uff09\u300d\u306e\u51e6\u7406\u3092\u884c\u3044\u3001IP Precedence\u5024\u3084DSCP\u5024\u3068\u3044\u3063\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u512a\u5148\u5ea6\u3092\u898b\u3066\u5224\u65ad\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u91cd\u8981\u5ea6\u306e\u4f4e\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304b\u3089\u512a\u5148\u7684\u306b\u5ec3\u68c4\u3057\u3001\u97f3\u58f0\u3084\u5236\u5fa1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u3088\u3046\u306b\u54c1\u8cea\u304c\u91cd\u8996\u3055\u308c\u308b\u901a\u4fe1\u3092\u4fdd\u8b77\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">WRED\u306e\u3057\u304d\u3044\u5024<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WRED\u3067\u306f\u3001\u6700\u5c0f\u3057\u304d\u3044\u5024\uff08Minimum Threshold\uff09\u3068\u6700\u5927\u3057\u304d\u3044\u5024\uff08Maximum Threshold\uff09\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30e5\u30fc\u304c\u6700\u5c0f\u3057\u304d\u3044\u5024\u4ee5\u4e0b\u306a\u3089\u3001\u5168\u30d1\u30b1\u30c3\u30c8\u3092\u901a\u5e38\u8ee2\u9001<\/li>\n\n\n\n<li>\u6700\u5c0f\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u308b\u3068\u3001\u512a\u5148\u5ea6\u306b\u5fdc\u3058\u3066\u30e9\u30f3\u30c0\u30e0\u306b\u30d1\u30b1\u30c3\u30c8\u3092\u30c9\u30ed\u30c3\u30d7<\/li>\n\n\n\n<li>\u6700\u5927\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u308b\u3068\u3001\u5168\u30d1\u30b1\u30c3\u30c8\u3092\u5ec3\u68c4\uff08\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7\u3068\u540c\u3058\u72b6\u614b\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4ed5\u7d44\u307f\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u300c\u30c9\u30ed\u30c3\u30d7\u306a\u3057\u300d\u300c\u30e9\u30f3\u30c0\u30e0\u30c9\u30ed\u30c3\u30d7\u300d\u300c\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7\u300d\u3068\u3044\u30463\u6bb5\u968e\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1aWRED\u306fTCP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u6709\u52b9\u3067\u3042\u308a\u3001\u518d\u9001\u5236\u5fa1\u3092\u5229\u7528\u3057\u3066\u8f3b\u8f33\u56de\u907f\u3092\u884c\u3044\u307e\u3059\u3002IP Precedence\u5024\u3084DSCP\u5024\u3092\u57fa\u6e96\u306b\u3057\u3066\u512a\u5148\u5ea6\u306e\u4f4e\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304b\u3089\u5148\u306b\u5ec3\u68c4\u3059\u308b\u70b9\u304c\u91cd\u8981\u3067\u3059\u3002RED\u3068\u306e\u9055\u3044\u306f\u300c\u512a\u5148\u5ea6\u3092\u8003\u616e\u3059\u308b\u304b\u3069\u3046\u304b\u300d\u3067\u3042\u308a\u3001\u3053\u3053\u306f\u8a66\u9a13\u3067\u3082\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u3002\u307e\u305f\u3001UDP\u306e\u3088\u3046\u306b\u518d\u9001\u5236\u5fa1\u3092\u6301\u305f\u306a\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u306f\u52b9\u679c\u304c\u9650\u5b9a\u7684\u3068\u306a\u308b\u305f\u3081\u3001\u5b9f\u904b\u7528\u3067\u306f\u4e8b\u524d\u691c\u8a3c\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">WRED\u306eCisco\u30eb\u30fc\u30bf\u3067\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WRED\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ec\u30d9\u30eb\u3067\u3082\u30af\u30e9\u30b9\u30ec\u30d9\u30eb\u3067\u3082\u6709\u52b9\u5316\u3067\u304d\u307e\u3059\u304c\u3001\u73fe\u5728\u306e\u904b\u7528\u3067\u306f\u30af\u30e9\u30b9\u5358\u4f4d\u3067\u9069\u7528\u3059\u308b <strong><span class=\"swl-marker mark_yellow\">CBWRED\uff08Class-Based WRED\uff09<\/span><\/strong> \u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30e9\u30b9\u5185\u3067WRED\u3092\u6709\u52b9\u306b\u3059\u308b\u5834\u5408\u306f\u3001\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u306b\u6b21\u306e1\u884c\u3092\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-pmap-c)# random-detect<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u308c\u308b\u3068\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f <strong>IP Precedence\u5024\u306b\u57fa\u3065\u304fWRED<\/strong> \u304c\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u3082\u3057 <strong>DSCP\u5024\u30d9\u30fc\u30b9<\/strong> \u3067\u52d5\u4f5c\u3055\u305b\u305f\u3044\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306b\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-pmap-c)# random-detect dscp-based<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u3057\u304d\u3044\u5024\u306e\u8a2d\u5b9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WRED\u306e\u52d5\u4f5c\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u512a\u5148\u5ea6\u3054\u3068\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u300c\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u300d\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Minimum threshold\uff08\u30e9\u30f3\u30c0\u30e0\u30c9\u30ed\u30c3\u30d7\u3092\u59cb\u3081\u308b\u5e73\u5747\u30ad\u30e5\u30fc\u30b5\u30a4\u30ba\uff09<\/li>\n\n\n\n<li>Maximum threshold\uff08\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u6368\u3066\u59cb\u3081\u308b\u5e73\u5747\u30ad\u30e5\u30fc\u30b5\u30a4\u30ba\uff09<\/li>\n\n\n\n<li>Mark probability denominator\uff08\u30c9\u30ed\u30c3\u30d7\u306e\u78ba\u7387\u3092\u8868\u3059\u5024\u300210\u306a\u308910\u5206\u306e1\u306e\u78ba\u7387\u3067\u7834\u68c4\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5024\u304c\u3042\u3089\u304b\u3058\u3081\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5909\u66f4\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-pmap-c)# random-detect &#91; precedence | dscp ] value min-threshold max-threshold mark-prob-denominator<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306fWRED\u3092\u30af\u30e9\u30b9\u306b\u9069\u7528\u3059\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>policy-map P-RULE1\n class C-VOICE\n  priority percent 10\n class C-DATA2\n  bandwidth percent 25\n  random-detect\n class C-DATA3\n  bandwidth percent 25\n  random-detect\n class class-default\n  fair-queue\n  random-detect<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f8b\u3067\u306f\u3001\u97f3\u58f0\u306f\u7d76\u5bfe\u512a\u5148\u51e6\u7406\u3055\u308c\uff08LLQ\u3068\u3057\u3066\u52d5\u4f5c\uff09\u3001\u30c7\u30fc\u30bf\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306fWRED\u306b\u3088\u308a\u512a\u5148\u5ea6\u3092\u8003\u616e\u3057\u306a\u304c\u3089\u30e9\u30f3\u30c0\u30e0\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3057\u304d\u3044\u5024\u3092\u8abf\u6574\u3057\u305f\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bIP Precedence\u5024\u3054\u3068\u306b\u3057\u304d\u3044\u5024\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class-map C-DATA1\n match ip precedence 1 2\n\nclass-map C-DATA2\n match ip precedence 3 4\n\npolicy-map P-RULE1\n class C-DATA1\n  bandwidth percent 20\n  random-detect\n  random-detect precedence 1 22 36 10\n  random-detect precedence 2 24 36 10\n class C-DATA2\n  bandwidth percent 30\n  random-detect\n  random-detect precedence 3 26 40 10\n  random-detect precedence 4 28 40 10\n class class-default\n  fair-queue\n  random-detect<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f8b\u3067\u306f\u3001Precedence\u5024\u3054\u3068\u306b\u300c\u6700\u5c0f\u3057\u304d\u3044\u5024\u300d\u300c\u6700\u5927\u3057\u304d\u3044\u5024\u300d\u300c\u30c9\u30ed\u30c3\u30d7\u78ba\u7387\u300d\u3092\u500b\u5225\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u512a\u5148\u5ea6\u306e\u4f4e\u3044\u30d1\u30b1\u30c3\u30c8\u304c\u3088\u308a\u65e9\u304f\u6368\u3066\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br>\u30fb<code>random-detect<\/code> \u2192 IP Precedence\u30d9\u30fc\u30b9\u304c\u30c7\u30d5\u30a9\u30eb\u30c8<br>\u30fb<code>random-detect dscp-based<\/code> \u2192 DSCP\u5024\u30d9\u30fc\u30b9\u3067\u52d5\u4f5c<br>\u30fb\u3057\u304d\u3044\u5024\u30923\u3064\u8a2d\u5b9a\u3067\u304d\u308b\uff08min \/ max \/ mark probability\uff09<br>\u30fbTCP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u52b9\u679c\u3092\u767a\u63ee\uff08\u518d\u9001\u5236\u5fa1\u304c\u3042\u308b\u305f\u3081\uff09<br>\u30fbUDP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u306f\u52b9\u679c\u304c\u9650\u5b9a\u7684<br><br>\u3053\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001<strong>WRED\u3068\u30c6\u30fc\u30eb\u30c9\u30ed\u30c3\u30d7\u306e\u9055\u3044<\/strong> \u3084 <strong>IP Precedence\u30fbDSCP\u3092\u4f7f\u3063\u305f\u512a\u5148\u5ea6\u5236\u5fa1<\/strong> \u306b\u95a2\u3059\u308b\u554f\u984c\u3092\u89e3\u304d\u3084\u3059\u304f\u306a\u308a\u307e\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\" 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[&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":[14],"tags":[],"class_list":["post-304","post","type-post","status-publish","format-standard","hentry","category-ip-service"],"_links":{"self":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/304","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=304"}],"version-history":[{"count":4,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions"}],"predecessor-version":[{"id":798,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/304\/revisions\/798"}],"wp:attachment":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}