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c\u8def\u63a2\u7d22\u306b\u4f3c\u305f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b9f\u884c\u3057\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u60c5\u5831\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/p><p><strong>\u3069\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u9078\u629e\u3059\u3079\u304d\u304b\uff1f<\/strong><\/p><p>\u3053\u3093\u306a\u306b\u4f3c\u3066\u3044\u308b\u306e\u306f\u306a\u305c\uff1f\uff01\u3053\u308c\u3089\u306f2\u3064\u306e\u7570\u306a\u308b\u7d44\u7e54\u306b\u3088\u3063\u3066\u4e26\u884c\u3057\u3066\u958b\u767a\u3055\u308c\u305f2\u3064\u306e\u5354\u5b9a\u3067\u3059\u3002\u3069\u3061\u3089\u306b\u3082\u7d76\u5bfe\u7684\u306a\u512a\u4f4d\u6027\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5e02\u5834\u3067\u8a66\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01IS-IS\u306f\u30d7\u30ed\u30c8\u30b3\u30eb\u958b\u767a\u3068\u62e1\u5f35\u6027\u306e\u9762\u3067\u3088\u308a\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308a\u3001OSPF\u306f\u5f8c\u308c\u3092\u53d6\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p><p>\u4eca\u65e5\u306f\u3001\u3069\u3061\u3089\u304c\u52dd\u3064\u304b\u3092\u8b70\u8ad6\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u6700\u521d\u306e\u8cea\u554f\u306b\u53d6\u308a\u7d44\u307f\u307e\u3057\u3087\u3046\u3002OSPF\u3068IS-IS\u304c\u540c\u3058\u30eb\u30fc\u30bf\u4e0a\u3067\u52d5\u4f5c\u3057\u3001\u4e21\u65b9\u3068\u3082\u540c\u3058\u5b9b\u5148\uff08\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30b9\u30af\uff09\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3092\u751f\u6210\u3059\u308b\u5834\u5408\u3001\u3069\u3061\u3089\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u4f7f\u7528\u3055\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u3053\u308c\u306f\u96e3\u3057\u3044\u512a\u5148\u9806\u4f4d\u306e\u9078\u629e\u3067\u3059\u3002\u5404\u30e1\u30fc\u30ab\u30fc\u306f\u72ec\u81ea\u306e\u9078\u629e\u3092\u3057\u3066\u3044\u307e\u3059\u3002Cisco\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u512a\u5148\u9806\u4f4d\u3092\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u3001AD\uff08Administration Distance\uff09\u3068\u3044\u3046\u5947\u5999\u306a\u540d\u524d\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u512a\u5148\u9806\u4f4d0\u304c\u6700\u9ad8\u512a\u5148\u5ea6\u3067\u3001\u512a\u5148\u9806\u4f4d255\u304c\u6700\u4f4e\u512a\u5148\u5ea6\u3067\u3059\u3002OSPF\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u512a\u5148\u9806\u4f4d\u30d3\u30c3\u30c8110\u3092\u4f7f\u7528\u3057\u3001IS-IS\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u512a\u5148\u9806\u4f4d115\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u660e\u3089\u304b\u306b\u3001OSPF\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002\u4f8b\u3092\u6319\u3052\u3066\u8aac\u660e\u3057\u307e\u3057\u3087\u3046\u3002<\/p><p>OSPF\u30eb\u30fc\u30c8: 10.1.1.0\/24 \u30cd\u30af\u30b9\u30c8\u30db\u30c3\u30d7 aaaa AD 110<\/p><p>IS-IS\u30eb\u30fc\u30c8: 10.1.1.0\/24 \u30cd\u30af\u30b9\u30c8\u30db\u30c3\u30d7 bbbb AD 115<\/p><p>\u3059\u308b\u3068\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u4ee5\u4e0b\u306e\u60c5\u5831\u304c\u5165\u529b\u3055\u308c\u307e\u3059\u3002<\/p><p><strong>OSPF\u30eb\u30fc\u30c8: 10.1.1.0\/24 \u30cd\u30af\u30b9\u30c8\u30db\u30c3\u30d7 aaaa AD 110<\/strong><\/p><p>OSPF\u306eAD\u512a\u5148\u5ea6\u304c\u9ad8\u304f\u3001IS-IS\u306eAD\u512a\u5148\u5ea6\u304c\u4f4e\u3044\u3068\u3044\u3046\u8aa4\u89e3\u3092\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002OSPF\u3068IS-IS\u304c\u540c\u6642\u306b\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001IS-IS\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30a8\u30f3\u30c8\u30ea\u304c\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u5165\u3089\u306a\u3044\u3068\u3044\u3046\u306e\u306f\u9593\u9055\u3044\u3067\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u540c\u7b49\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30a8\u30f3\u30c8\u30ea\u306e\u307f\u304cAD\u5024\u306e\u512a\u5148\u5ea6\u3092\u4f7f\u7528\u3057\u3066\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u6b8b\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u540c\u7b49\u3067\u306a\u3044\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30a8\u30f3\u30c8\u30ea\u306e\u5834\u5408\u3001AD\u306e\u512a\u5148\u5ea6\u306f\u6bd4\u8f03\u3055\u308c\u307e\u305b\u3093\u3002<\/p><p>\u3082\u3061\u308d\u3093\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3078\u306e\u767b\u9332\u3092\u7af6\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4ed6\u306b\u3082\u3042\u308a\u307e\u3059\u3002RIP(120)\u3001EIGRP(90)\u3001BGP(20,200)\u3001\u76f4\u63a5\u63a5\u7d9a\u30eb\u30fc\u30c8(0)\u3068\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u30eb\u30fc\u30c8(1)\u304c\u3042\u308a\u3001\u62ec\u5f27\u5185\u306b\u306fAD\u512a\u5148\u5ea6\u3068\u5916\u90e8BGP\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p><p>20\u3001\u5185\u90e8BGP\u306f200\u3067\u3059\u3002\u73fe\u5728\u3001\u4e00\u822c\u7684\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306eAD\u512a\u5148\u5ea6\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p><p>\u76f4\u63a5\u30eb\u30fc\u30c8 &gt; \u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u30eb\u30fc\u30c8 &gt; EBGP &gt; EIGRP &gt; OSPF &gt; ISIS &gt; RIP &gt; IBGP<\/p><p><strong>\u6700\u9069\u306a\u6b21\u306e\u30db\u30c3\u30d7\u306f\u3069\u308c\u3067\u3059\u304b\uff1f<\/strong><\/p><p>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u305f\u306e\u3067\u3001\u6b21\u306bIP\u30d1\u30b1\u30c3\u30c8\u304c\u30eb\u30fc\u30bf\u30fc\u306b\u3069\u306e\u3088\u3046\u306b\u5230\u7740\u3059\u308b\u304b\u3001\u305d\u3057\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3092\u898b\u3064\u3051\u3066IP\u30d1\u30b1\u30c3\u30c8\u306e\u7d4c\u8def\u63a2\u7d22\u30bf\u30b9\u30af\u3092\u5b8c\u4e86\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u6700\u3082\u52b9\u7387\u7684\u304b\u3064\u6b63\u78ba\u306b\u30cd\u30af\u30b9\u30c8\u30db\u30c3\u30d7\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306b\u4ee5\u4e0b\u306e 5 \u3064\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u3042\u308a\u3001IP \u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u304c 10.1.1.1 \u306e\u5834\u5408\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u306f\u3069\u306e\u30a8\u30f3\u30c8\u30ea\u3092\u9078\u629e\u3057\u307e\u3059\u304b? \u6700\u9577\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u4e00\u81f4\u30eb\u30fc\u30eb\u306b\u3088\u308b\u3068\u300110.1.1.1\/32 \u304c\u9078\u629e\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u5b8c\u5168\u4e00\u81f4\u3001\u3064\u307e\u308a 32 \u30d3\u30c3\u30c8\u4e00\u81f4\u3060\u304b\u3089\u3067\u3059\u3002<br \/>IP\u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u304c10.1.1.100\u306e\u5834\u5408\u3001\u6700\u9577\u4e00\u81f4\u306724\u30d3\u30c3\u30c8\u306b\u4e00\u81f4\u3059\u308b10.1.1.0\/24\u304c\u9078\u629e\u3055\u308c\u307e\u3059\u3002<br \/>IP\u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u304c10.1.2.100\u306e\u5834\u5408\u300116\u30d3\u30c3\u30c8\u4e00\u81f4\u3059\u308b\u6700\u9577\u4e00\u81f4\u3067\u3042\u308b10.1.0.0\/16\u304c\u9078\u629e\u3055\u308c\u307e\u3059\u3002<br \/>IP\u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u304c10.2.1.100\u306e\u5834\u5408\u30018\u30d3\u30c3\u30c8\u304c\u4e00\u81f4\u3059\u308b\u6700\u9577\u4e00\u81f4\u3067\u3042\u308b10.0.0\/8\u304c\u9078\u629e\u3055\u308c\u307e\u3059\u3002<br \/>IP\u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u304c192.168.1.1\u306e\u5834\u5408\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30eb\u30fc\u30c8\u3067\u3042\u308b0.0.0\/0\u304c\u9078\u629e\u3055\u308c\u3001\u4efb\u610f\u306eIP\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u306b\u4e00\u81f4\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>10.1.1.1\/32<br \/>10.1.1.0\/24<br \/>10.1.0.0\/16<br \/>10.0.0.0\/8<br \/>0.0.0.0\/0<br \/>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30ebAD\u3001\u304a\u3088\u3073\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u6700\u9577\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u30de\u30c3\u30c1\u30f3\u30b0\u30eb\u30fc\u30eb\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u7406\u89e3\u3057\u307e\u3057\u305f\u304c\u3001\u6b21\u306e\u8a18\u4e8b\u3067\u306f\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8\u30d7\u30ed\u30c8\u30b3\u30ebOSPF\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e87d53 e-con-full e-flex e-con e-child\" data-id=\"1e87d53\" data-element_type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a14c13b e-con-full anli_l_st e-flex e-con e-child\" data-id=\"a14c13b\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:90,&quot;sticky_effects_offset&quot;:100,&quot;sticky_anchor_link_offset&quot;:100,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;]}\">\n\t\t<div class=\"elementor-element elementor-element-1da7e082 e-con-full e-flex e-con e-child\" data-id=\"1da7e082\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-69473ed elementor-widget elementor-widget-heading\" data-id=\"69473ed\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u7d9a\u304d\u3092\u8aad\u3080 <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-108ac635 elementor-widget elementor-widget-shortcode\" data-id=\"108ac635\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        \/* --- \u8fd9\u91cc\u7684\u53c2\u6570\u5168\u90e8\u4fdd\u7559\u4f60\u7684\u4fee\u6539 --- *\/\n        .vpro-wrapper {\n            width: 100%;\n            max-width: 25rem;\n            height: 38.5rem;\n            overflow-y: auto;\n            overflow-x: hidden;\n            \/* 1. \u589e\u52a0\u5e95\u90e8\u5185\u8fb9\u8ddd\uff0c\u5236\u9020\u865a\u7a7a\u611f *\/\n            padding: 0.3125rem 0.3125rem 0rem 0.3125rem;\n            scrollbar-width: thin;\n            box-sizing: border-box;\n        }\n\n        .vpro-wrapper::-webkit-scrollbar { width: 0.25rem; }\n        .vpro-wrapper::-webkit-scrollbar-thumb { background: #ccc; border-radius: 0.625rem; }\n\n        .vpro-item {\n            width: 100%;\n            height: 21rem;\n            margin-bottom: 1rem;\n            background: #fff;\n            border: 0.0625rem solid #D7D7D7;\n            border-radius: 0.5rem;\n            display: flex;\n            flex-direction: column;\n            flex-shrink: 0;\n            overflow: hidden;\n            box-sizing: border-box;\n            transition: all 0.3s ease;\n        }\n\n        .vpro-item:hover {\n            box-shadow: 0 0.5rem 1.25rem rgba(0,0,0,0.08);\n            transform: translateY(-0.125rem);\n        }\n\n        .vpro-img-box {\n            width: 100%;\n            height: 14rem; \/* \u4fdd\u7559\u4f60\u6539\u7684 10rem *\/\n            overflow: hidden;\n            background: #f5f5f5;\n            flex-shrink: 0;\n        }\n\n        .vpro-img-box img {\n            width: 100%;\n            height: 100%;\n            object-fit: cover;\n            object-position: center;\n            display: block;\n        }\n\n        .vpro-content {\n            padding: 0.5rem 0.5rem 0.8rem 1.25rem;\n            flex-grow: 1;\n            display: flex;\n            align-items: center;\n        }\n\n        .vpro-title {\n            font-size: 1.25rem; \/* \u4fdd\u7559\u4f60\u6539\u7684 1.5rem *\/\n            font-weight: 500;\n            line-height: 1.4;\n            color: #000;\n            display: -webkit-box;\n            -webkit-line-clamp: 3; \/* \u4fdd\u7559\u4f60\u6539\u7684 3 \u884c *\/\n            -webkit-box-orient: vertical;\n            overflow: hidden;\n            text-decoration: none;\n        }\n\n        .vpro-title a {\n            text-decoration: none;\n            color: inherit;\n        }\n\n        \/* 2. \u589e\u52a0\u4e00\u4e2a\u7269\u7406\u5360\u4f4d\u7b26\uff0c\u786e\u4fdd\u6eda\u52a8\u5230\u5e95\u90e8\u6709\u4f59\u91cf *\/\n        .vpro-bottom-spacer {\n            height: 4rem;\n            width: 100%;\n            flex-shrink: 0;\n        }\n    <\/style>\n\n    <div class=\"vpro-wrapper\">\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/cases\/road-monitoring-sd-wan\">\n                                                    <img decoding=\"async\" width=\"1360\" height=\"540\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring.png\" class=\"attachment-full size-full wp-post-image\" alt=\"InHand\u306eSD-WAN\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u4ecb\u3057\u3066\u63a5\u7d9a\u3055\u308c\u305f\u5206\u6563\u578b\u9053\u8def\u76e3\u8996\u30b5\u30a4\u30c8\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring.png 1360w, https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring-300x119.png 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring-768x305.png 768w, https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring-18x7.png 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring-600x238.png 600w\" sizes=\"(max-width: 1360px) 100vw, 1360px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/cases\/road-monitoring-sd-wan\">\u5206\u6563\u578b\u9053\u8def\u76e3\u8996\u306e\u305f\u3081\u306eSD-WAN\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/industries\/intelligent-public-transport-system-2\">\n                                                    <div style=\"width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#eee;color:#999;\">\u753b\u50cf\u306a\u3057<\/div>\n                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/industries\/intelligent-public-transport-system-2\">\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u516c\u5171\u4ea4\u901a\u30b7\u30b9\u30c6\u30e0<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/cases\/wireless-connectivity-for-dr-imaging-device\">\n                                                    <img decoding=\"async\" width=\"1780\" height=\"660\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner.jpg 1780w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner-300x111.jpg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner-768x285.jpg 768w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner-1536x570.jpg 1536w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner-18x7.jpg 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/Wireless-Connectivity-for-DR-Imaging-Device-banner-600x222.jpg 600w\" sizes=\"(max-width: 1780px) 100vw, 1780px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/cases\/wireless-connectivity-for-dr-imaging-device\">DR\u30a4\u30e1\u30fc\u30b8\u30f3\u30b0\u88c5\u7f6e\u5411\u3051\u30ef\u30a4\u30e4\u30ec\u30b9\u63a5\u7d9a<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-business-travels\">\n                                                    <img loading=\"lazy\" decoding=\"async\" width=\"1780\" height=\"660\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner.jpg 1780w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner-300x111.jpg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner-768x285.jpg 768w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner-1536x570.jpg 1536w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner-18x7.jpg 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Business-Travels-banner-600x222.jpg 600w\" sizes=\"(max-width: 1780px) 100vw, 1780px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-business-travels\">\u51fa\u5f35\u6642\u306e5G\u63a5\u7d9a<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-small-retail-stores\">\n                                                    <img loading=\"lazy\" decoding=\"async\" width=\"1780\" height=\"660\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner.jpg 1780w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner-300x111.jpg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner-768x285.jpg 768w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner-1536x570.jpg 1536w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner-18x7.jpg 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-Small-Retail-Stores-banner-600x222.jpg 600w\" sizes=\"(max-width: 1780px) 100vw, 1780px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-small-retail-stores\">\u5c0f\u898f\u6a21\u5c0f\u58f2\u5e97\u5411\u30515G\u63a5\u7d9a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-rv-travel\">\n                                                    <img loading=\"lazy\" decoding=\"async\" width=\"1780\" height=\"660\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner.jpg 1780w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-300x111.jpg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-768x285.jpg 768w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-1536x570.jpg 1536w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-18x7.jpg 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-600x222.jpg 600w\" sizes=\"(max-width: 1780px) 100vw, 1780px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/ja\/cases\/5g-connectivity-for-rv-travel\">\u30ad\u30e3\u30f3\u30d4\u30f3\u30b0\u30ab\u30fc\u65c5\u884c\u306e\u305f\u3081\u306e5G\u63a5\u7d9a<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n        \n        <div class=\"vpro-bottom-spacer\"><\/div>\n    <\/div>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Why Do We Need the Routing Protocol? How do the IP packets traveling through the Internet, like cars on the highway, get to their destination? Everyone is familiar with cars. Even if we don\u2019t know the destination, there is an electronic &#8230; What is the Routing table? Now that you\u2019ve read so far, you must have a question: How is the routing table of each router generated? I won\u2019t answer this question first, but I\u2019ll analyze it with the &#8230;<\/p>","protected":false},"author":1,"featured_media":960030,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[817],"tags":[],"case_tag":[],"class_list":["post-1012990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OSPF vs IS-IS: Routing Protocol Priority &amp; AD Comparison<\/title>\n<meta name=\"description\" content=\"Compare OSPF and IS-IS routing protocols. Learn how Administration Distance (AD) values (OSPF:110, IS-IS:115) determine route priority in Cisco routers.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.inhand.com\/ja\/support\/blogs\/why-do-we-need-routing-protocols\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Do We Need the Routing Protocol?\" \/>\n<meta property=\"og:description\" content=\"How do the IP packets traveling through the Internet, like cars on the highway, get to their destination? Obviously, OSPF routing information wins.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.inhand.com\/ja\/support\/blogs\/why-do-we-need-routing-protocols\" \/>\n<meta property=\"og:site_name\" content=\"InHand Networks\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-04T18:35:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-04T00:44:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/routing-protocols-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"352\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Why Do We Need the Routing Protocol?\" \/>\n<meta name=\"twitter:description\" content=\"How do the IP packets traveling through the Internet, like cars on the highway, get to their destination? 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