{"id":478301,"date":"2023-08-09T09:30:30","date_gmt":"2023-08-09T09:30:30","guid":{"rendered":""},"modified":"2023-09-05T11:16:29","modified_gmt":"2023-09-05T11:16:29","slug":"ospf","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/ospf\/","title":{"rendered":"OSPF"},"content":{"rendered":"<p>Open Shortest Path First (OSPF) \u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb (IP) \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u30d1\u30b1\u30c3\u30c8\u3092\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305f\u3001\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5185\u90e8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4 \u30d7\u30ed\u30c8\u30b3\u30eb (IGP) \u3067\u3059\u3002OSPF \u306f\u3001\u30ea\u30f3\u30af\u72b6\u614b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u3042\u308b\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u79fb\u52d5\u3059\u308b\u305f\u3081\u306e\u6700\u9069\u306a\u30d1\u30b9\u3092\u52d5\u7684\u306b\u8a08\u7b97\u3057\u307e\u3059\u3002OSPF \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u3067\u67d4\u8edf\u6027\u304c\u3042\u308a\u3001\u52b9\u7387\u7684\u306a\u624b\u6bb5\u3092\u63d0\u4f9b\u3059\u308b\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b7\u30b9\u30c6\u30e0\u306e\u91cd\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<h2>OSPF \u306e\u8d77\u6e90\u3068\u305d\u306e\u6700\u521d\u306e\u8a00\u53ca\u306e\u6b74\u53f2<\/h2>\n<p>OSPF \u306e\u958b\u767a\u306f\u3001\u4ee5\u524d\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0 \u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9032\u5316\u3068\u3057\u3066 1980 \u5e74\u4ee3\u5f8c\u534a\u306b\u59cb\u307e\u308a\u307e\u3057\u305f\u3002\u3088\u308a\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u3067\u67d4\u8edf\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0 \u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5fc5\u8981\u6027\u304b\u3089 OSPF \u304c\u4f5c\u6210\u3055\u308c\u30011991 \u5e74\u306b Internet Engineering Task Force (IETF) \u306b\u3088\u3063\u3066\u6a19\u6e96\u5316\u3055\u308c\u305f\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u516c\u958b\u3055\u308c\u3001RFC 1247 \u3067\u5b9a\u7fa9\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\uff1a<\/h3>\n<ul>\n<li><strong>1980\u5e74\u4ee3\u5f8c\u534a:<\/strong> \u521d\u671f\u306e\u7814\u7a76\u958b\u767a\u3002<\/li>\n<li><strong>1991:<\/strong> RFC 1247 \u3067\u6a19\u6e96\u5316\u3055\u308c\u305f OSPF \u30d0\u30fc\u30b8\u30e7\u30f3 1\u3002<\/li>\n<li><strong>1993:<\/strong> OSPF \u30d0\u30fc\u30b8\u30e7\u30f3 2 \u306f RFC 1583 \u3067\u6a19\u6e96\u5316\u3055\u308c\u3066\u304a\u308a\u3001\u73fe\u5728\u3067\u3082\u6a19\u6e96\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>OSPF \u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831: OSPF \u30c8\u30d4\u30c3\u30af\u306e\u62e1\u5f35<\/h2>\n<p>OSPF \u306f\u3001\u30c0\u30a4\u30af\u30b9\u30c8\u30e9\u306e\u6700\u77ed\u30d1\u30b9\u512a\u5148\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u5e2f\u57df\u5e45\u3001\u4fe1\u983c\u6027\u3001\u9045\u5ef6\u306a\u3069\u306e\u3044\u304f\u3064\u304b\u306e\u30e1\u30c8\u30ea\u30c3\u30af\u3092\u8003\u616e\u3057\u3066\u3001\u6700\u9069\u306a\u30d1\u30b9\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002OSPF \u30eb\u30fc\u30bf\u30fc\u306f\u3001\u30ea\u30f3\u30af\u72b6\u614b\u60c5\u5831\u3092\u5b9a\u671f\u7684\u306b\u4ea4\u63db\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6700\u65b0\u306e\u30c8\u30dd\u30ed\u30b8 \u30de\u30c3\u30d7\u3092\u7dad\u6301\u3057\u3001\u5909\u66f4\u306b\u52d5\u7684\u306b\u9069\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h3>\u4e3b\u8981\u306a\u6982\u5ff5:<\/h3>\n<ul>\n<li><strong>\u30a8\u30ea\u30a2:<\/strong> OSPF \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u30a8\u30ea\u30a2\u3068\u547c\u3070\u308c\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5206\u5272\u3057\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3068\u7ba1\u7406\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/li>\n<li><strong>\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8\u30a2\u30c9\u30d0\u30bf\u30a4\u30ba\u30e1\u30f3\u30c8 (LSA):<\/strong> OSPF \u30eb\u30fc\u30bf\u306f LSA \u3092\u4ea4\u63db\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u60c5\u5831\u3092\u5171\u6709\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u6599\u91d1\uff1a<\/strong> OSPF \u306f\u3001\u901a\u5e38\u306f\u30ea\u30f3\u30af\u5e2f\u57df\u5e45\u306b\u57fa\u3065\u3044\u3066\u30b3\u30b9\u30c8 \u30e1\u30c8\u30ea\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u6700\u77ed\u30d1\u30b9\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>OSPF \u306e\u5185\u90e8\u69cb\u9020: OSPF \u306e\u4ed5\u7d44\u307f<\/h2>\n<p>OSPF \u306f\u3044\u304f\u3064\u304b\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u767a\u898b\uff1a<\/strong> OSPF \u30eb\u30fc\u30bf\u306f\u30cd\u30a4\u30d0\u30fc\u3092\u691c\u51fa\u3057\u3001\u96a3\u63a5\u95a2\u4fc2\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/li>\n<li><strong>LSA \u4ea4\u63db:<\/strong> \u30eb\u30fc\u30bf\u306f LSA \u3092\u4ea4\u63db\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30dd\u30ed\u30b8\u306e\u5171\u6709\u30d3\u30e5\u30fc\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u6700\u77ed\u7d4c\u8def\u8a08\u7b97:<\/strong> OSPF \u306f\u3001\u30c0\u30a4\u30af\u30b9\u30c8\u30e9\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u5b9b\u5148\u3078\u306e\u6700\u9069\u306a\u30d1\u30b9\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8ee2\u9001\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210:<\/strong> OSPF \u306f\u30d1\u30b1\u30c3\u30c8 \u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u7528\u306e\u8ee2\u9001\u30c6\u30fc\u30d6\u30eb\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>OSPF \u306e\u4e3b\u8981\u6a5f\u80fd\u306e\u5206\u6790<\/h2>\n<ul>\n<li><strong>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3:<\/strong> OSPF \u306e\u968e\u5c64\u69cb\u9020\u3068\u30a8\u30ea\u30a2\u306b\u3088\u308a\u3001\u5927\u898f\u6a21\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u67d4\u8edf\u6027:<\/strong> OSPF \u306f\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bf\u30a4\u30d7\u3068\u3055\u307e\u3056\u307e\u306a\u30b3\u30b9\u30c8 \u30e1\u30c8\u30ea\u30c3\u30af\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u53ce\u675f\uff1a<\/strong> OSPF \u306f\u3001\u30c8\u30dd\u30ed\u30b8\u306e\u5909\u66f4\u5f8c\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8fc5\u901f\u306a\u53ce\u675f\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u5b89\u5168\uff1a<\/strong> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u8a8d\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>OSPF \u306e\u7a2e\u985e: \u30c6\u30fc\u30d6\u30eb\u3068\u30ea\u30b9\u30c8\u306e\u4f7f\u7528<\/h2>\n<p>OSPF \u306f\u3055\u307e\u3056\u307e\u306a\u9818\u57df\u306b\u57fa\u3065\u3044\u3066\u5206\u985e\u3067\u304d\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6a19\u6e96<\/td>\n<td>\u30d0\u30c3\u30af\u30dc\u30fc\u30f3\u306b\u63a5\u7d9a\u3055\u308c\u305f\u901a\u5e38\u306eOSPF\u30a8\u30ea\u30a2<\/td>\n<\/tr>\n<tr>\n<td>\u80cc\u9aa8<\/td>\n<td>\u4ed6\u306e\u3059\u3079\u3066\u306eOSPF\u30a8\u30ea\u30a2\u3092\u63a5\u7d9a\u3059\u308b\u4e2d\u592e\u30a8\u30ea\u30a2\uff08\u30a8\u30ea\u30a20\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30bf\u30d6<\/td>\n<td>\u5916\u90e8\u30eb\u30fc\u30c8\u5e83\u544a\u3092\u53d7\u3051\u4ed8\u3051\u306a\u3044\u30a8\u30ea\u30a2<\/td>\n<\/tr>\n<tr>\n<td>\u5b8c\u5168\u306b\u305a\u3093\u3050\u308a\u3057\u305f<\/td>\n<td>Stub\u306b\u4f3c\u3066\u3044\u308b\u304c\u3001\u5e83\u544a\u304c\u3088\u308a\u5236\u9650\u3055\u308c\u3066\u3044\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u305d\u308c\u307b\u3069\u592a\u3063\u3066\u3044\u306a\u3044<\/td>\n<td>\u30b9\u30bf\u30d6\u3068\u6a19\u6e96\u30a8\u30ea\u30a2\u306e\u5074\u9762\u3092\u7d44\u307f\u5408\u308f\u305b\u305f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>OSPF\u306e\u4f7f\u3044\u65b9\u3001\u4f7f\u7528\u4e0a\u306e\u554f\u984c\u70b9\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n<ul>\n<li>\n<p><strong>\u4f7f\u7528\u65b9\u6cd5:<\/strong><\/p>\n<ul>\n<li>\u5927\u898f\u6a21\u306a\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3002<\/li>\n<li>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30b5\u30fc\u30d3\u30b9 \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc (ISP)\u3002<\/li>\n<li>\u30de\u30eb\u30c1\u30d9\u30f3\u30c0\u30fc\u74b0\u5883\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u3088\u304f\u3042\u308b\u554f\u984c:<\/strong><\/p>\n<ul>\n<li>\u8a2d\u5b9a\u30df\u30b9\u3067\u3059\u3002<\/li>\n<li>\u4e92\u63db\u6027\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d5\u30e9\u30c3\u30d4\u30f3\u30b0\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u89e3\u6c7a\u7b56:<\/strong><\/p>\n<ul>\n<li>\u9069\u5207\u306a\u8a08\u753b\u3068\u69cb\u6210\u3002<\/li>\n<li>\u6a19\u6e96\u3078\u306e\u6e96\u62e0\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u76e3\u8996\u30c4\u30fc\u30eb\u3092\u6d3b\u7528\u3059\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5fb4<\/th>\n<th>OSPF<\/th>\n<th>RIP<\/th>\n<th>EIGRP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/td>\n<td>\u30ea\u30f3\u30af\u30b9\u30c6\u30fc\u30c8<\/td>\n<td>\u8ddd\u96e2\u30d9\u30af\u30c8\u30eb<\/td>\n<td>\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9<\/td>\n<\/tr>\n<tr>\n<td>\u53ce\u675f\u6642\u9593<\/td>\n<td>\u901f\u3044<\/td>\n<td>\u9045\u3044<\/td>\n<td>\u9069\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/td>\n<td>\u9ad8\u3044<\/td>\n<td>\u4f4e\u3044<\/td>\n<td>\u9069\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u30e1\u30c8\u30ea\u30c3\u30af<\/td>\n<td>\u6599\u91d1<\/td>\n<td>\u30db\u30c3\u30d7\u6570<\/td>\n<td>\u8907\u5408\u30e1\u30c8\u30ea\u30c3\u30af<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>OSPF\u306b\u95a2\u3059\u308b\u4eca\u5f8c\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<ul>\n<li><strong>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5b9a\u7fa9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (SDN) \u3068\u306e\u7d71\u5408\u3002<\/strong><\/li>\n<li><strong>\u5f37\u5316\u3055\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u8a8d\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u3002<\/strong><\/li>\n<li><strong>\u53ce\u675f\u901f\u5ea6\u3068\u52b9\u7387\u6027\u306e\u5411\u4e0a\u3002<\/strong><\/li>\n<\/ul>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3092 OSPF \u3067\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u307e\u305f\u306f OSPF \u3068\u95a2\u9023\u4ed8\u3051\u308b\u65b9\u6cd5<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f OSPF \u3092\u5229\u7528\u3057\u3066\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9 \u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8981\u6c42\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u5f37\u5316\u3067\u304d\u307e\u3059\u3002OSPF \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001OneProxy \u304c\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8ca0\u8377\u3092\u52b9\u7387\u7684\u306b\u5206\u6563\u3057\u3001\u6700\u9069\u306a\u30d1\u30b9\u9078\u629e\u3092\u4fdd\u8a3c\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5909\u66f4\u306b\u9069\u5fdc\u3067\u304d\u307e\u3059\u3002OSPF \u3068\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u9023\u643a\u306b\u3088\u308a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u914d\u4fe1\u3084\u305d\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b5\u30fc\u30d3\u30b9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u67d4\u8edf\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<ul>\n<li><a href=\"https:\/\/datatracker.ietf.org\/wg\/ospf\/documents\/\" target=\"_new\" rel=\"noopener nofollow\">IETF OSPF\u30ef\u30fc\u30ad\u30f3\u30b0\u30b0\u30eb\u30fc\u30d7<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2328\" target=\"_new\" rel=\"noopener nofollow\">RFC 2328 \u2013 OSPF \u30d0\u30fc\u30b8\u30e7\u30f3 2<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/open-shortest-path-first-ospf\/7039-1.html\" target=\"_new\" rel=\"noopener nofollow\">Cisco OSPF \u8a2d\u8a08\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/jp\/\" target=\"_new\" rel=\"noopener\">OneProxy\u516c\u5f0f\u30b5\u30a4\u30c8<\/a> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u5185\u3067 OSPF \u304c\u3069\u306e\u3088\u3046\u306b\u5229\u7528\u3055\u308c\u308b\u304b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u306f\u3001\u3053\u3061\u3089\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<hr>\n<p>\u3053\u306e\u8a18\u4e8b\u306f\u3001OSPF \u306e\u6b74\u53f2\u3001\u6a5f\u80fd\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u95a2\u3059\u308b\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u3042\u308a\u3001\u7279\u306b\u3001OSPF \u304c OneProxy \u304c\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30c6\u30af\u30ce\u30ed\u30b8\u3068\u3069\u306e\u3088\u3046\u306b\u7d71\u5408\u3055\u308c\u308b\u304b\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u3066\u3044\u307e\u3059\u3002<\/p>","protected":false},"featured_media":478302,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478301","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Open Shortest Path First (OSPF)<\/mark>","faq_items":[{"question":"What is Open Shortest Path First (OSPF)?","answer":"<p>Open Shortest Path First (OSPF) is an interior gateway protocol (IGP) that routes packets within an Internet Protocol (IP) network. It uses the link-state algorithm to calculate the best path for data to travel and is essential for handling network traffic in a scalable, flexible, and efficient way.<\/p>"},{"question":"When was OSPF created, and what is its origin?","answer":"<p>OSPF was developed in the late 1980s and was standardized by the Internet Engineering Task Force (IETF) in 1991. It was created as a more scalable and flexible routing protocol and has undergone revisions, with OSPF Version 2 being the standard version today.<\/p>"},{"question":"How does OSPF work?","answer":"<p>OSPF operates through several steps, including neighbor discovery, Link State Advertisement (LSA) exchange, shortest path calculation using Dijkstra's algorithm, and forwarding table creation. This process ensures dynamic and optimal routing within a network.<\/p>"},{"question":"What are the key features of OSPF?","answer":"<p>OSPF's key features include scalability, flexibility, quick convergence, and security. Its hierarchical structure allows for optimal routing in large networks, and it supports multiple network types and varied cost metrics.<\/p>"},{"question":"What types of OSPF exist?","answer":"<p>OSPF is categorized based on areas, including Standard, Backbone, Stub, Totally Stubby, and Not-So-Stubby areas. These types govern how OSPF routers in different parts of the network exchange routing information.<\/p>"},{"question":"How is OSPF used, and what are some common problems?","answer":"<p>OSPF is used in large enterprise networks, ISPs, and multi-vendor environments. Common problems with OSPF can include misconfiguration, incompatibility, and network flapping. These can be addressed through proper planning, configuration, and utilizing network monitoring tools.<\/p>"},{"question":"How does OSPF compare with other routing protocols?","answer":"<p>OSPF offers fast convergence, high scalability, and calculates the routing path based on cost. In comparison, RIP has slow convergence and low scalability, using hop count as a metric, while EIGRP offers moderate convergence and scalability, using a composite metric.<\/p>"},{"question":"What are the future perspectives and technologies related to OSPF?","answer":"<p>The future of OSPF includes integration with Software-Defined Networking (SDN), enhanced security mechanisms, and improvements in convergence speed and efficiency. These advancements are expected to make OSPF more adaptive and powerful.<\/p>"},{"question":"How can proxy servers like OneProxy be used or associated with OSPF?","answer":"<p>Proxy servers can use OSPF to enhance routing to backend servers. OneProxy, for example, can utilize OSPF to efficiently balance the load, ensure optimal path selection, and adapt to network changes. This leads to improved performance in content delivery and other network services.<\/p>"},{"question":"Where can I find more information about OSPF?","answer":"<p>You can find detailed information about OSPF through the <a href=\"https:\/\/datatracker.ietf.org\/wg\/ospf\/documents\/\" target=\"_new\">IETF OSPF Working Group<\/a>, <a href=\"https:\/\/tools.ietf.org\/html\/rfc2328\" target=\"_new\">RFC 2328 \u2013 OSPF Version 2<\/a>, <a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/open-shortest-path-first-ospf\/7039-1.html\" target=\"_new\">Cisco OSPF Design Guide<\/a>, and <a href=\"https:\/\/oneproxy.pro\" target=\"_new\">OneProxy's Official Website<\/a>.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478301\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/478302"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=478301"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}