{"id":298,"date":"2025-05-14T00:16:00","date_gmt":"2025-05-13T15:16:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=298"},"modified":"2025-10-16T11:51:07","modified_gmt":"2025-10-16T02:51:07","slug":"qos%ef%bc%88%e5%9f%ba%e7%a4%8e%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=298","title":{"rendered":"QoS\uff08\u57fa\u790e\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">QoS\u3068\u306f\u4f55\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">QoS\uff08Quality of Service\uff09<\/span><\/strong>\u3068\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u901a\u4fe1\u306e\u54c1\u8cea\u3092\u4e00\u5b9a\u30ec\u30d9\u30eb\u3067\u4fdd\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u306e\u3053\u3068\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u300c\u3069\u306e\u901a\u4fe1\u3092\u512a\u5148\u3057\u3066\u6d41\u3059\u304b\u300d\u300c\u3069\u306e\u304f\u3089\u3044\u306e\u5e2f\u57df\u3092\u78ba\u4fdd\u3059\u308b\u304b\u300d\u3068\u3044\u3063\u305f\u8abf\u6574\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u884c\u3046\u3053\u3068\u3067\u3001\u5fc5\u8981\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5b89\u5b9a\u3057\u305f\u901a\u4fe1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u5bb6\u306e\u4e2d\u3067\u540c\u6642\u306b\u96fb\u6c17\u3092\u4f7f\u3046\u3068\u30d6\u30ec\u30fc\u30ab\u30fc\u304c\u843d\u3061\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001QoS\u306f\u305d\u306e\u72b6\u6cc1\u3067\u300c\u51b7\u8535\u5eab\u306e\u96fb\u6e90\u3060\u3051\u306f\u6700\u512a\u5148\u3067\u78ba\u4fdd\u3059\u308b\u300d\u3068\u3044\u3063\u305f\u7ba1\u7406\u3092\u3057\u3066\u3044\u308b\u30a4\u30e1\u30fc\u30b8\u306b\u8fd1\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QoS\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u306e\u554f\u984c\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QoS\u3092\u9069\u7528\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u3059\u3079\u3066\u306e\u901a\u4fe1\u304c\u540c\u3058\u512a\u5148\u5ea6\u3067\u9001\u3089\u308c\u308b\u305f\u3081\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u6df7\u96d1\u3059\u308b\u3068\u91cd\u8981\u306a\u901a\u4fe1\u304c\u5f71\u97ff\u3092\u53d7\u3051\u307e\u3059\u3002\u7279\u306b\u97f3\u58f0\u901a\u8a71\u3084\u30d3\u30c7\u30aa\u4f1a\u8b70\u3068\u3044\u3063\u305f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u3067\u306f\u3001\u5c11\u3057\u306e\u9045\u5ef6\u3084\u30d1\u30b1\u30c3\u30c8\u306e\u6b20\u843d\u3067\u3082\u54c1\u8cea\u304c\u5927\u304d\u304f\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5178\u578b\u7684\u306a\u4f8b\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\uff08FTP\uff09\u3068\u97f3\u58f0\u901a\u8a71\u304c\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4f7f\u3063\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306f\u5927\u91cf\u306e\u5e2f\u57df\u3092\u4f7f\u3044\u3001\u3055\u3089\u306b\u77ed\u6642\u9593\u306b\u96c6\u4e2d\u3059\u308b\u6027\u8cea\uff08\u30d0\u30fc\u30b9\u30c8\u6027\uff09\u304c\u3042\u308a\u307e\u3059\u3002\u3082\u3057\u512a\u5148\u5ea6\u3092\u6c7a\u3081\u305a\u306b\u6d41\u3059\u3068\u3001\u97f3\u58f0\u901a\u8a71\u304c\u9014\u5207\u308c\u305f\u308a\u9045\u5ef6\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306bWAN\uff08\u5e83\u57df\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u306e\u3088\u3046\u306b\u5e2f\u57df\u304c\u9650\u3089\u308c\u308b\u90e8\u5206\u3067\u306f\u3001\u3053\u306e\u554f\u984c\u304c\u9855\u8457\u306b\u73fe\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FTP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u9055\u3044<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u7a2e\u985e<\/th><th>\u7279\u6027<\/th><\/tr><\/thead><tbody><tr><td>FTP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/td><td>\u30fb\u5927\u91cf\u306e\u5e2f\u57df\u3092\u5fc5\u8981\u3068\u3059\u308b\u30fb\u77ed\u6642\u9593\u306b\u96c6\u4e2d\u3057\u3066\u6d41\u308c\u308b\uff08\u30d0\u30fc\u30b9\u30c8\u6027\uff09\u30fbTCP\u306b\u3088\u308a\u518d\u9001\u5236\u5fa1\u3055\u308c\u308b\u305f\u3081\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u306f\u4e0d\u8981<\/td><\/tr><tr><td>\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/td><td>\u30fb\u4f7f\u7528\u3059\u308b\u5e2f\u57df\u306f\u5c11\u306a\u304f\u4e00\u5b9a\u30fb1\u901a\u8a71\u3042\u305f\u308a\u3001G.729\u3067\u7d0440kbps\u3001G.711\u3067\u7d04100kbps\u30fbUDP\u3067\u9001\u4fe1\u3055\u308c\u3001\u518d\u9001\u304c\u306a\u3044\u305f\u3081\u9045\u5ef6\u3084\u6b20\u843d\u306b\u975e\u5e38\u306b\u654f\u611f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300c\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u3092\u5f37\u304f\u6c42\u3081\u308b\u305f\u3081\u3001QoS\u306b\u3088\u308b\u512a\u5148\u51e6\u7406\u304c\u5fc5\u9808\u300d\u3068\u3044\u3046\u70b9\u3092\u78ba\u5b9f\u306b\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QoS\u3092\u9069\u7528\u3057\u305f\u5834\u5408\u306e\u52b9\u679c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QoS\u3092\u5c0e\u5165\u3059\u308b\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u512a\u5148\u7684\u306b\u51e6\u7406\u3059\u308b\u305f\u3081\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306a\u3069\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5206\u3051\u3066\u51e6\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u97f3\u58f0\u30c7\u30fc\u30bf\uff08RTP\uff09\u306f\u6700\u512a\u5148\u3067\u9001\u4fe1<\/li>\n\n\n\n<li>\u97f3\u58f0\u306e\u5236\u5fa1\u4fe1\u53f7\uff08SIP\uff09\u306f\u5fc5\u8981\u306a\u5e2f\u57df\u3092\u78ba\u4fdd<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u6b8b\u308a\u306e\u5e2f\u57df\u3092\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4ed5\u7d44\u307f\u306b\u3088\u308a\u3001\u540c\u3058\u5e2f\u57df\u3092\u5171\u6709\u3057\u3066\u3044\u3066\u3082\u901a\u8a71\u54c1\u8cea\u3092\u5b88\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u97f3\u58f0\u901a\u4fe1\u306b\u306f\u63a8\u5968\u3055\u308c\u308b\u54c1\u8cea\u57fa\u6e96\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9045\u5ef6\uff08Delay\uff09\uff1a150\u30df\u30ea\u79d2\u4ee5\u4e0b<\/li>\n\n\n\n<li>\u30b8\u30c3\u30bf\u30fc\uff08Jitter\uff09\uff1a30\u30df\u30ea\u79d2\u4ee5\u4e0b<\/li>\n\n\n\n<li>\u640d\u5931\uff08Packet Loss\uff09\uff1a1%\u4ee5\u4e0b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306f\u3042\u304f\u307e\u3067\u76ee\u5b89\u3067\u3059\u304c\u3001\u8a66\u9a13\u3067\u306f\u3088\u304f\u554f\u308f\u308c\u308b\u6570\u5024\u306a\u306e\u3067\u899a\u3048\u3066\u304a\u304f\u3068\u6709\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QoS\u306e\u30e2\u30c7\u30eb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QoS\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9069\u7528\u3059\u308b\u65b9\u6cd5\u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u30663\u3064\u306e\u30e2\u30c7\u30eb\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>QoS\u30e2\u30c7\u30eb<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>IntServ\uff08Integrated Services\uff09<\/td><td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b\u5e2f\u57df\u3092\u4e88\u7d04\u3059\u308b\u65b9\u5f0f\u3002RSVP\u3068\u3044\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u5229\u7528\u3002\u5168\u3066\u306e\u901a\u4fe1\u30d5\u30ed\u30fc\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u3001\u6a5f\u5668\u3078\u306e\u8ca0\u8377\u304c\u5927\u304d\u304f\u3001\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u306f\u4e0d\u5411\u304d\u3002\u5b9f\u969b\u306e\u904b\u7528\u3067\u306f\u3042\u307e\u308a\u4f7f\u308f\u308c\u306a\u3044\u3002<\/td><\/tr><tr><td>DiffServ\uff08Differentiated Services\uff09<\/td><td>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5206\u985e\u3057\u3001\u512a\u5148\u5ea6\u3092\u4ed8\u4e0e\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u5f0f\u3002\u5206\u985e\u3001\u30de\u30fc\u30ad\u30f3\u30b0\u3001\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306e\u6d41\u308c\u3067\u5b9f\u88c5\u3055\u308c\u308b\u3002\u73fe\u5b9f\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u6700\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u304a\u308a\u3001\u4e00\u822c\u7684\u306bQoS\u3068\u3044\u3048\u3070\u3053\u306e\u65b9\u5f0f\u3092\u6307\u3059\u3002<\/td><\/tr><tr><td>\u30d9\u30b9\u30c8\u30a8\u30d5\u30a9\u30fc\u30c8<\/td><td>QoS\u3092\u8a2d\u5b9a\u3057\u306a\u3044\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u52d5\u4f5c\u3002\u30d1\u30b1\u30c3\u30c8\u3092\u5230\u7740\u9806\uff08FIFO\uff09\u3067\u51e6\u7406\u3057\u3001\u512a\u5148\u5ea6\u306f\u5b58\u5728\u3057\u306a\u3044\u3002\u3064\u307e\u308aQoS\u306a\u3057\u306e\u72b6\u614b\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300c\u73fe\u5b9f\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u306fDiffServ\u3067\u3042\u308b\u300d\u3068\u3044\u3046\u70b9\u3068\u3001\u300c\u30d9\u30b9\u30c8\u30a8\u30d5\u30a9\u30fc\u30c8\uff1dFIFO\u300d\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3092\u5fc5\u305a\u62bc\u3055\u3048\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IntServ\u3068DiffServ\u306e\u9055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e21\u8005\u306e\u9055\u3044\u3092\u6574\u7406\u3059\u308b\u3068\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IntServ\u306f\u300c\u4e88\u7d04\u578b\u300d\u3067\u3042\u308a\u3001\u500b\u3005\u306e\u901a\u4fe1\u30d5\u30ed\u30fc\u3092\u7d30\u304b\u304f\u7ba1\u7406\u3059\u308b\u305f\u3081\u5c0f\u898f\u6a21\u5411\u3051<\/li>\n\n\n\n<li>DiffServ\u306f\u300c\u5206\u985e\u578b\u300d\u3067\u3042\u308a\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u307e\u3068\u3081\u3066\u51e6\u7406\u3059\u308b\u305f\u3081\u5927\u898f\u6a21\u3067\u3082\u904b\u7528\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u9055\u3044\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u308c\u3070\u3001\u8a66\u9a13\u554f\u984c\u3067\u9078\u629e\u80a2\u3092\u898b\u5206\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DiffServ\u30e2\u30c7\u30eb\u306e\u51e6\u7406\u30d5\u30ed\u30fc\u306e\u5168\u4f53\u50cf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DiffServ\uff08Differentiated Services\uff09\u30e2\u30c7\u30eb\u3067\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u53d7\u3051\u53d6\u3063\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u91cd\u8981\u5ea6\u306b\u5fdc\u3058\u3066\u51e6\u7406\u3092\u5909\u3048\u308b\u4ed5\u7d44\u307f\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u51e6\u7406\u306e\u6d41\u308c\u306f\u6b21\u306e4\u6bb5\u968e\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5206\u985e\uff08Classification\uff09<\/li>\n\n\n\n<li>\u30de\u30fc\u30ad\u30f3\u30b0\uff08Marking\uff09<\/li>\n\n\n\n<li>\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0\uff08Queuing\uff09<\/li>\n\n\n\n<li>\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\uff08Scheduling\uff09<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u6d41\u308c\u3092\u7406\u89e3\u3059\u308b\u3068\u3001\u306a\u305c\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u512a\u5148\u3055\u308c\u308b\u306e\u304b\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002CCNA\u8a66\u9a13\u3067\u3082\u300cDiffServ\u306e\u6d41\u308c\u306f4\u6bb5\u968e\u3067\u69cb\u6210\u3055\u308c\u308b\u300d\u3068\u3044\u3046\u70b9\u306f\u3088\u304f\u554f\u308f\u308c\u308b\u306e\u3067\u3001\u78ba\u5b9f\u306b\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5206\u985e\uff08Classification\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u3001\u30eb\u30fc\u30bf\u3084\u30b9\u30a4\u30c3\u30c1\u306f\u53d7\u3051\u53d6\u3063\u305f\u30d1\u30b1\u30c3\u30c8\u304c\u3069\u3093\u306a\u7a2e\u985e\u306e\u901a\u4fe1\u306a\u306e\u304b\u3092\u5224\u5225\u3057\u307e\u3059\u3002\u5206\u985e\u306e\u57fa\u6e96\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IP\u30a2\u30c9\u30ec\u30b9\uff08\u9001\u4fe1\u5143\u30fb\u5b9b\u5148\uff09<\/li>\n\n\n\n<li>TCP\/UDP\u30dd\u30fc\u30c8\u756a\u53f7\uff08\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7a2e\u985e\uff09<\/li>\n\n\n\n<li>L2\u60c5\u5831\uff08CoS\u5024\u306a\u3069\uff09<\/li>\n\n\n\n<li>L3\u60c5\u5831\uff08DSCP\u5024\u3084IP Precedence\u5024\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u5b9b\u5148\u30dd\u30fc\u30c8\u756a\u53f75060\uff08SIP\uff09\u3067\u3042\u308c\u3070\u97f3\u58f0\u306e\u5236\u5fa1\u7528\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u300c\u4ed5\u5206\u3051\u4f5c\u696d\u300d\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u5f8c\u306e\u51e6\u7406\u3067\u512a\u5148\u5ea6\u3092\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30de\u30fc\u30ad\u30f3\u30b0\uff08Marking\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5206\u985e\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u306b\u512a\u5148\u5ea6\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u308b\u5de5\u7a0b\u3067\u3059\u3002\u3053\u3053\u3067\u4f7f\u308f\u308c\u308b\u4ee3\u8868\u7684\u306a\u4ed5\u7d44\u307f\u304cCoS\uff08Class of Service\uff09\u3068DSCP\uff08Differentiated Services Code Point\uff09\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L2\u30de\u30fc\u30ad\u30f3\u30b0\uff08CoS\uff09<br>Ethernet\u306e802.1Q\u30bf\u30b0\u306b\u542b\u307e\u308c\u308b3\u30d3\u30c3\u30c8\u306e\u5024\uff080\uff5e7\uff09\u3067\u512a\u5148\u5ea6\u3092\u8868\u3057\u307e\u3059\u3002\u30b9\u30a4\u30c3\u30c1\u3067\u5229\u7528\u3055\u308c\u307e\u3059\u304c\u3001\u30ea\u30f3\u30af\u3054\u3068\u306b\u3057\u304b\u4fdd\u6301\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u5e83\u57df\u306b\u308f\u305f\u308b\u901a\u4fe1\u3067\u306f\u4f7f\u3044\u306b\u304f\u3044\u9762\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L3\u30de\u30fc\u30ad\u30f3\u30b0\uff08IP Precedence \/ DSCP\uff09<br>IPv4\u30d8\u30c3\u30c0\u306eToS\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5229\u7528\u3057\u3066\u512a\u5148\u5ea6\u3092\u8a18\u9332\u3057\u307e\u3059\u3002\u30eb\u30fc\u30bf\u3067\u306f\u3053\u3061\u3089\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IP Precedence\uff1a3\u30d3\u30c3\u30c8\u3092\u5229\u7528\u3057\u30010\uff5e7\u306e\u7bc4\u56f2\u3067\u8868\u3059<\/li>\n\n\n\n<li>DSCP\uff1a6\u30d3\u30c3\u30c8\u3092\u5229\u7528\u3057\u30010\uff5e63\u307e\u3067\u306e\u7bc4\u56f2\u3067\u8868\u3059<\/li>\n<\/ul>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300cDSCP\u306f64\u6bb5\u968e\u3067\u7d30\u304b\u3044\u5236\u5fa1\u304c\u53ef\u80fd\u300d\u300c\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u306fEF\uff08Expedited Forwarding\uff09\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u300d\u3068\u3044\u3063\u305f\u70b9\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">DSCP\u5024\u3068PHB\uff08Per Hop Behavior\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">DSCP\u306e\u5024\u306b\u3088\u3063\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306f\u300c\u3053\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u3069\u3046\u6271\u3046\u304b\u300d\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u3053\u306e\u52d5\u4f5c\u65b9\u91dd\u3092PHB\uff08Per Hop Behavior\uff09\u3068\u547c\u3073\u307e\u3059\u3002\u4e3b\u306a\u5206\u985e\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>PHB<\/th><th>DSCP\u5024\uff08\u4f8b\uff09<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>Default<\/td><td>0<\/td><td>\u30d9\u30b9\u30c8\u30a8\u30d5\u30a9\u30fc\u30c8\u3002\u7279\u306b\u512a\u5148\u3057\u306a\u3044\u901a\u5e38\u30c7\u30fc\u30bf\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u3002<\/td><\/tr><tr><td>Class Selector (CS)<\/td><td>CS0\uff5eCS7\uff088\u523b\u307f\uff09<\/td><td>IP Precedence\u3068\u306e\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3057\u305f\u65b9\u5f0f\u3002\u4f8b\uff1aCS5\u306fIP Precedence 5\u3068\u540c\u3058\u610f\u5473\u3002<\/td><\/tr><tr><td>Assured Forwarding (AF)<\/td><td>AF11\uff5eAF43<\/td><td>\u512a\u5148\u5ea6\u3068\u7834\u68c4\u30ec\u30d9\u30eb\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u8868\u73fe\u3002\u512a\u5148\u5ea6\u304c\u9ad8\u304f\u3001\u7834\u68c4\u30ec\u30d9\u30eb\u304c\u4f4e\u3044\u3082\u306e\u307b\u3069\u5b89\u5b9a\u3057\u3066\u8ee2\u9001\u3055\u308c\u308b\u3002<\/td><\/tr><tr><td>Expedited Forwarding (EF)<\/td><td>46<\/td><td>\u6700\u512a\u5148\u3067\u8ee2\u9001\u3055\u308c\u308b\u3002\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u6a19\u6e96\u7684\u306b\u4f7f\u308f\u308c\u308b\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306bEF\uff1dDSCP 46\u306f\u8a66\u9a13\u3067\u983b\u51fa\u3067\u3059\u3002\u5fc5\u305a\u6697\u8a18\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0\uff08Queuing\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30b1\u30c3\u30c8\u3092\u305d\u306e\u307e\u307e\u9001\u51fa\u305b\u305a\u3001\u4e00\u5ea6\u300c\u30ad\u30e5\u30fc\u300d\u3068\u3044\u3046\u5f85\u6a5f\u5217\u306b\u683c\u7d0d\u3057\u307e\u3059\u3002\u30ad\u30e5\u30fc\u306f\u8907\u6570\u3042\u308a\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u3069\u306e\u30ad\u30e5\u30fc\u306b\u5165\u308b\u304b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u300c\u512a\u5148\u5ea6\u306e\u9ad8\u3044\u901a\u4fe1\u3092\u5148\u306b\u51e6\u7406\u3059\u308b\u300d\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\uff08Scheduling\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u30ad\u30e5\u30fc\u306b\u30d1\u30b1\u30c3\u30c8\u304c\u305f\u307e\u3063\u305f\u5834\u5408\u3001\u3069\u306e\u9806\u756a\u3067\u51e6\u7406\u3059\u308b\u304b\u3092\u6c7a\u3081\u308b\u4ed5\u7d44\u307f\u304c\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a\u65b9\u5f0f\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u65b9\u5f0f<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>FIFO\uff08First In First Out\uff09<\/td><td>\u5230\u7740\u9806\u306b\u51e6\u7406\u3002QoS\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u65b9\u5f0f\u3002<\/td><\/tr><tr><td>PQ\uff08Priority Queuing\uff09<\/td><td>\u512a\u5148\u5ea6\u306e\u9ad8\u3044\u30ad\u30e5\u30fc\u3092\u5fc5\u305a\u5148\u306b\u51e6\u7406\u3059\u308b\u65b9\u5f0f\u3002<\/td><\/tr><tr><td>WFQ\uff08Weighted Fair Queuing\uff09<\/td><td>\u901a\u4fe1\u30d5\u30ed\u30fc\u3054\u3068\u306b\u516c\u5e73\u306b\u51e6\u7406\u3059\u308b\u65b9\u5f0f\u3002<\/td><\/tr><tr><td>CBWFQ\uff08Class-Based WFQ\uff09<\/td><td>\u7ba1\u7406\u8005\u304c\u5b9a\u7fa9\u3057\u305f\u30af\u30e9\u30b9\u3054\u3068\u306b\u5e2f\u57df\u3092\u5272\u308a\u5f53\u3066\u308b\u65b9\u5f0f\u3002<\/td><\/tr><tr><td>LLQ\uff08Low Latency Queuing\uff09<\/td><td>CBWFQ\u306bPQ\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u65b9\u5f0f\u3002\u97f3\u58f0\u3092\u6700\u512a\u5148\u30ad\u30e5\u30fc\u306b\u5165\u308c\u308b\u305f\u3081\u3001\u901a\u8a71\u54c1\u8cea\u3092\u5b88\u308b\u306e\u306b\u6700\u3082\u4f7f\u308f\u308c\u308b\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u3067\u306f\u300cLLQ\u306f\u97f3\u58f0\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5b88\u308b\u305f\u3081\u306e\u4ee3\u8868\u7684\u306a\u65b9\u5f0f\u300d\u3068\u3044\u3046\u70b9\u304c\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30dd\u30ea\u30b7\u30f3\u30b0\u3068\u30b7\u30a7\u30fc\u30d4\u30f3\u30b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QoS\u306e\u5236\u5fa1\u306b\u306f\u3001\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3060\u3051\u3067\u306a\u304f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u91cf\u3092\u5236\u5fa1\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30dd\u30ea\u30b7\u30f3\u30b0\uff08Policing\uff09<\/span><\/strong><br>\u8a2d\u5b9a\u3055\u308c\u305f\u901f\u5ea6\u3092\u8d85\u3048\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7834\u68c4\u3059\u308b\u65b9\u5f0f\u3002\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u901a\u8a71\u306e\u3088\u3046\u306a\u901a\u4fe1\u306b\u9069\u7528\u3059\u308b\u3068\u54c1\u8cea\u4f4e\u4e0b\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30b7\u30a7\u30fc\u30d4\u30f3\u30b0\uff08Shaping\uff09<\/span><\/strong><br>\u8a2d\u5b9a\u3055\u308c\u305f\u901f\u5ea6\u3092\u8d85\u3048\u305f\u5206\u3092\u30d0\u30c3\u30d5\u30a1\u306b\u305f\u3081\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u898b\u3066\u9001\u4fe1\u3059\u308b\u65b9\u5f0f\u3002\u7279\u306bWAN\u30eb\u30fc\u30bf\u3067\u3088\u304f\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen 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