{"id":43928,"date":"2023-02-28T11:09:14","date_gmt":"2023-02-28T09:09:14","guid":{"rendered":"https:\/\/www.catonetworks.com\/?p=43928"},"modified":"2023-02-28T11:09:21","modified_gmt":"2023-02-28T09:09:21","slug":"pros-and-cons-of-mpls","status":"publish","type":"post","link":"https:\/\/www.catonetworks.com\/ja\/blog\/pros-and-cons-of-mpls\/","title":{"rendered":"MPLS\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\uff1a\u3054\u5229\u7528\u4e2d\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5408\u81f4\u3057\u3066\u3044\u307e\u3059\u304b\uff1f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u52b9\u7387\u6027\u3068\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4fdd\u8a3c\u3059\u308b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u6280\u8853\u3067\u3042\u308bMPLS\u3002\u3057\u304b\u3057\u30ea\u30e2\u30fc\u30c8\u30ef\u30fc\u30af\u306e\u666e\u53ca\u3001\u30e2\u30d0\u30a4\u30eb\u63a5\u7d9a\u306e\u5897\u52a0\u3001\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306e\u30a4\u30f3\u30d5\u30e9\u306e\u53f0\u982d\u306b\u4ee3\u8868\u3055\u308c\u308b\u4e16\u754c\u7684\u306a\u5909\u5316\u306b\u3088\u308a\u3001\u4f01\u696d\u306fMPLS\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6226\u7565\u3092\u8003\u3048\u76f4\u3059\u5fc5\u8981\u306b\u8feb\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u5f53\u30d6\u30ed\u30b0\u8a18\u4e8b\u3067\u306f\u3001MPLS\u3068\u306f\u4f55\u304b\u3001\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\u3001MPLS\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u305d\u306e\u6b21\u306f\u4f55\u3092\u691c\u8a0e\u3059\u308b\u3079\u304d\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mpls\u3068\u306f\"><strong>MPLS\u3068\u306f\uff1f<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MPLS\uff08Multiprotocol Label Switching\uff09\u3068\u306f\u3001\u30eb\u30fc\u30bf\u30fc\u304c\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u30c7\u30fc\u30bf\u306e\u8ee2\u9001\u5148\uff08\u30cd\u30af\u30b9\u30c8\u30db\u30c3\u30d7\uff09\u3092\u6c7a\u5b9a\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u3089\u308c\u305f\u7d4c\u8def\u3092\u57fa\u306b\u6c7a\u5b9a\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u6280\u8853\u3067\u3059\u3002\u8907\u96d1\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u4e0a\u3067\u30a2\u30c9\u30ec\u30b9\u306e\u5b9b\u5148\u3092\u8abf\u3079\u308b\u4ee3\u308f\u308a\u306b\u3001\u30eb\u30fc\u30bf\u30fc\u306f\u30d1\u30b1\u30c3\u30c8\u306e\u30e9\u30d9\u30eb\u3092\u898b\u308b\u3060\u3051\u3067\u3088\u3044\u306e\u3067\u3001\u3088\u308a\u8fc5\u901f\u3067\u52b9\u7387\u7684\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002\u307e\u305fMPLS\u3092\u5229\u7528\u3059\u308b\u306b\u306f\u5c02\u7528\u306e\u63a5\u7d9a\u3092\u8a2d\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u305f\u3081\u3001\u4e8b\u5b9f\u4e0a\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mpls\u306e\u4ed5\u7d44\u307f\"><strong>MPLS\u306e\u4ed5\u7d44\u307f<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MPLS\u3067\u306f\u7d4c\u8def\u4e0a\u306e\u6700\u521d\u306e\u30eb\u30fc\u30bf\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5165\u308b\u3068\u304d\u306b\u30e9\u30d9\u30eb\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002\u305d\u3057\u3066\u30e9\u30d9\u30eb\u306f\u30d1\u30b1\u30c3\u30c8\u304c\u901a\u308b\u3079\u304d\u7d4c\u8def\u3092\u3042\u3089\u304b\u3058\u3081\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30e9\u30d9\u30eb\u306b\u306f\u5024\u306e\u4ed6\u306b\u3001\u5fc5\u8981\u306aQoS\uff08Quality of Service\u3001\u30b5\u30fc\u30d3\u30b9\u54c1\u8cea\uff09\u3001\u30b9\u30bf\u30c3\u30af\u5185\u306e\u30e9\u30d9\u30eb\u306e\u4f4d\u7f6e\u3001\u30bf\u30a4\u30e0\u30fb\u30c8\u30a5\u30fc\u30fb\u30e9\u30a4\u30d6\uff08Time To Live\uff09\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306e\u8ffd\u52a0\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u306f\u3053\u306e\u30e9\u30d9\u30eb\u306b\u57fa\u3065\u304d\u3001\u7d4c\u8def\u4e0a\u306e\u6b21\u306e\u30eb\u30fc\u30bf\u30fc\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30b1\u30c3\u30c8\u3092\u53d7\u4fe1\u3057\u305f2\u756a\u76ee\u306e\u30eb\u30fc\u30bf\u30fc\u306f\u3053\u306e\u30e9\u30d9\u30eb\u3092\u8aad\u307f\u53d6\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u6b21\u306e\u8ee2\u9001\u5148\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u307e\u305f\u30d1\u30b1\u30c3\u30c8\u304b\u3089\u65e2\u5b58\u306e\u30e9\u30d9\u30eb\u3092\u53d6\u308a\u5916\u3057\u3001\u65b0\u3057\u3044\u30e9\u30d9\u30eb\u3092\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u304c\u5b9b\u5148\u306b\u5230\u9054\u3059\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002\u7d4c\u8def\u4e0a\u6700\u5f8c\u306e\u30eb\u30fc\u30bf\u30fc\u306f\u3001\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u304b\u3089\u30e9\u30d9\u30eb\u3092\u53d6\u308a\u5916\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d4c\u8def\u304c\u3042\u3089\u304b\u3058\u3081\u6c7a\u307e\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u30eb\u30fc\u30bf\u30fc\u306f\u30e9\u30d9\u30eb\u3092\u8aad\u307f\u53d6\u308b\u3060\u3051\u3067\u3001\u30d1\u30b1\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u3088\u3063\u3066\u3001\u3088\u308a\u9ad8\u901f\u304b\u3064\u52b9\u7387\u7684\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u53ef\u80fd\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MPLS\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u7528\u8a9e\u96c6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e9\u30d9\u30eb\u30fb\u30a8\u30c3\u30b8\u30fb\u30eb\u30fc\u30bf\u30fc\uff08LER\uff09\u30fc \u6700\u521d\u307e\u305f\u306f\u6700\u5f8c\u306e\u30eb\u30fc\u30bf\u30fc\u3002\u30c7\u30fc\u30bf\u306b\u6700\u521d\u306e\u30e9\u30d9\u30eb\u3092\u5272\u308a\u5f53\u3066\u3066\u7d4c\u8def\u3092\u6c7a\u5b9a\u3059\u308b\u304b\u3001\u30d1\u30b1\u30c3\u30c8\u304b\u3089\u30e9\u30d9\u30eb\u3092\u53d6\u308a\u5916\u3059\u3002\u6700\u521d\u306e\u30eb\u30fc\u30bf\u30fc\u306fIngress Label Switching Router\uff08IngressLSR\uff09\u3001\u6700\u5f8c\u306e\u30eb\u30fc\u30bf\u30fc\u306fEgress LSR\u3068\u3082\u547c\u3070\u308c\u308b\u3002<\/li>\n\n\n\n<li>\u30e9\u30d9\u30eb\u30fb\u30b9\u30a4\u30c3\u30c1\u30fb\u30eb\u30fc\u30bf\u30fc\uff08LSR\uff09\u30fc \u7d4c\u8def\u4e0a\u306e\u30eb\u30fc\u30bf\u30fc\u3002\u30e9\u30d9\u30eb\u306e\u8aad\u307f\u53d6\u308a\u3068\u5207\u308a\u66ff\u3048\u304a\u3088\u3073\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u8ee2\u9001\u5148\u306e\u6c7a\u5b9a\u3092\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30e9\u30d9\u30eb\u30fb\u30b9\u30a4\u30c3\u30c1\u30fb\u30d1\u30b9\uff08LSP\uff09\u30fc \u30d1\u30b1\u30c3\u30c8\u304c\u901a\u904e\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u7d4c\u8def\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067MPLS\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.catonetworks.com\/resources\/what-telcos-wont-tell-you-about-mpls?utm_source=blog&amp;utm_medium=top_cta&amp;utm_campaign=wont_tell_you_about_mpls\">\u30ea\u30f3\u30af\uff1a\u8ab0\u3082\u6559\u3048\u3066\u304f\u308c\u306a\u3044MPLS\u306e\u3053\u3068 | \u8a73\u3057\u304f\u8aad\u3080<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mpls\u306e\u30e1\u30ea\u30c3\u30c8\"><strong>MPLS\u306e\u30e1\u30ea\u30c3\u30c8<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MPLS\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u3084\u30d3\u30b8\u30cd\u30b9\u306b\u3082\u305f\u3089\u3055\u308c\u308b\u8907\u6570\u306e\u5229\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-\u78ba\u5b9f\u6027\"><strong>\u78ba\u5b9f\u6027<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e9\u30d9\u30eb\u306b\u57fa\u3065\u3044\u305f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u884c\u3046\u3053\u3068\u306b\u3088\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u3092\u5b9b\u5148\u306b\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001MPLS\u3067\u306f\u30d1\u30b1\u30c3\u30c8\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u4f8b\u3048\u3070\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u30d3\u30c7\u30aa\u30d1\u30b1\u30c3\u30c8\u3092\u3001\u3088\u308a\u9045\u5ef6\u306e\u5c11\u306a\u3044\u7d4c\u8def\u3067\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u78ba\u5b9f\u6027\u306fSLA\uff08Service Level Agreement\u3001\u30b5\u30fc\u30d3\u30b9\u6c34\u6e96\u5408\u610f\uff09\u306b\u3088\u3063\u3066\u4fdd\u8a3c\u3055\u308c\u3001MPLS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u30b5\u30fc\u30d3\u30b9\u505c\u6b62\u3092\u89e3\u6c7a\u3057\u305f\u308a\u3001\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u652f\u6255\u3046\u304b\u306b\u3064\u3044\u3066\u3082\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-\u9ad8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\"><strong>\u9ad8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u54c1\u8cea\u3001\u4f4e\u9045\u5ef6\u3001\u4f4e\u30b8\u30c3\u30bf\u30fc\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4fdd\u8a3c\u3059\u308bMPLS\u5c02\u7528\u30a4\u30f3\u30d5\u30e9\u306b\u3088\u308a\u3001\u52b9\u7387\u6027\u3068\u512a\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u97f3\u58f0\u3084\u30d3\u30c7\u30aa\u3001\u30df\u30c3\u30b7\u30e7\u30f3\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u60c5\u5831\u306a\u3069\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u306b\u3082\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mpls\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\"><strong>MPLS\u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3057\u3001MPLS\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u6b20\u70b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-\u8cbb\u7528\u304c\u9ad8\u3044\"><strong>\u8cbb\u7528\u304c\u9ad8\u3044<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e83\u5e2f\u57df\u3001\u9ad8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u7af6\u4e89\u529b\u306e\u3042\u308bSLA\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001MPLS\u30b5\u30fc\u30d3\u30b9\u306f\u9ad8\u4fa1\u3067\u3059\u3002\u307e\u305f\u5fc5\u8981\u3068\u3055\u308c\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u63a5\u7d9a\u306e\u5c0e\u5165\u3084\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306f\u3001\u30ea\u30bd\u30fc\u30b9\u96c6\u7d04\u7684\u306a\u30d7\u30ed\u30bb\u30b9\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-\u67d4\u8edf\u6027\u306e\u6b20\u5982\"><strong>\u67d4\u8edf\u6027\u306e\u6b20\u5982<\/strong><\/h3>\n\n\n\n<p 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