{"id":169,"date":"2025-05-11T09:34:00","date_gmt":"2025-05-11T00:34:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=169"},"modified":"2025-10-15T10:29:02","modified_gmt":"2025-10-15T01:29:02","slug":"syslog","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=169","title":{"rendered":"syslog"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">syslog\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">syslog<\/span><\/strong>\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3084\u30b5\u30fc\u30d0\u304c\u751f\u6210\u3059\u308b\u30ed\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u898f\u683c\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff0f\u30b5\u30fc\u30d0\u578b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u9001\u4fe1\u5074\uff08\u4f8b\uff1aCisco\u30eb\u30fc\u30bf\u3001\u30b9\u30a4\u30c3\u30c1\u306a\u3069\uff09\u304c\u53d7\u4fe1\u5074\uff08\u4f8b\uff1aLinux\u30b5\u30fc\u30d0\uff09\u3078\u30c6\u30ad\u30b9\u30c8\u5f62\u5f0f\u3067\u30ed\u30b0\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<br>syslog\u30e1\u30c3\u30bb\u30fc\u30b8\u306fUDP\u307e\u305f\u306fTCP\u306e<strong><span class=\"swl-marker mark_yellow\">\u30dd\u30fc\u30c8\u756a\u53f7514<\/span><\/strong>\u3092\u4f7f\u7528\u3057\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306e\u30ed\u30b0\u3092\u53ce\u96c6\u3059\u308b\u3053\u3068\u3067\u3001\u969c\u5bb3\u306e\u539f\u56e0\u3084\u6a5f\u5668\u306e\u52d5\u4f5c\u72b6\u6cc1\u3092\u628a\u63e1\u3067\u304d\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u8996\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">syslog &#8211; Facility<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">Facility\uff08\u30d5\u30a1\u30b7\u30ea\u30c6\u30a3\uff09<\/span><\/strong>\u306f\u300c\u30ed\u30b0\u306e\u51fa\u529b\u5143\u300d\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u3084\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304b\u3092\u533a\u5225\u3059\u308b\u5f79\u5272\u3092\u6301\u3061\u307e\u3059\u3002Linux\u3067\u306f <code>*<\/code> \u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5168\u3066\u306eFacility\u3092\u5bfe\u8c61\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Facility<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>auth, authpriv<\/td><td>\u8a8d\u8a3c\u30b5\u30fc\u30d3\u30b9\uff08login\u3001su\u306a\u3069\uff09<\/td><\/tr><tr><td>cron<\/td><td>cron\u30b8\u30e7\u30d6\u95a2\u9023<\/td><\/tr><tr><td>daemon<\/td><td>\u5404\u7a2e\u30c7\u30fc\u30e2\u30f3<\/td><\/tr><tr><td>kern<\/td><td>\u30ab\u30fc\u30cd\u30eb<\/td><\/tr><tr><td>lpr<\/td><td>\u5370\u5237\u30b7\u30b9\u30c6\u30e0<\/td><\/tr><tr><td>mail<\/td><td>\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0<\/td><\/tr><tr><td>news<\/td><td>\u30cb\u30e5\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9<\/td><\/tr><tr><td>syslog<\/td><td>syslog\u6a5f\u80fd\u81ea\u8eab<\/td><\/tr><tr><td>user<\/td><td>\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30b0\u30e9\u30e0<\/td><\/tr><tr><td>local0\uff5elocal7<\/td><td>\u72ec\u81ea\u306e\u8a2d\u5b9a\u3067\u5229\u7528\u53ef\u80fd<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">syslog &#8211; Severity<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">Severity\uff08\u30b7\u30d3\u30ea\u30c6\u30a3\uff09<\/span><\/strong>\u306f\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u91cd\u8981\u5ea6\uff08\u512a\u5148\u5ea6\uff09\u300d\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u6570\u5024\u304c\u5c0f\u3055\u3044\u307b\u3069\u6df1\u523b\u3067\u3001\u5927\u304d\u3044\u307b\u3069\u8efd\u5ea6\u3067\u3059\u3002\u6307\u5b9a\u3057\u305fSeverity\u4ee5\u4e0a\u306e\u30ec\u30d9\u30eb\u304c\u8a18\u9332\u3055\u308c\u308b\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Severity<\/th><th>\u6570\u5024<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>emerg<\/td><td>0<\/td><td>\u975e\u5e38\u306b\u5371\u967a\u306a\u72b6\u614b\uff08\u30b7\u30b9\u30c6\u30e0\u505c\u6b62\u30ec\u30d9\u30eb\uff09<\/td><\/tr><tr><td>alert<\/td><td>1<\/td><td>\u5371\u967a\u306a\u72b6\u614b\u3001\u5373\u6642\u5bfe\u5fdc\u304c\u5fc5\u8981<\/td><\/tr><tr><td>crit<\/td><td>2<\/td><td>\u91cd\u5927\u306a\u969c\u5bb3\u3001\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u72b6\u614b<\/td><\/tr><tr><td>err<\/td><td>3<\/td><td>\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc<\/td><\/tr><tr><td>warning<\/td><td>4<\/td><td>\u8b66\u544a<\/td><\/tr><tr><td>notice<\/td><td>5<\/td><td>\u91cd\u8981\u306a\u901a\u77e5\uff08\u6ce8\u610f\u3059\u3079\u304d\u60c5\u5831\uff09<\/td><\/tr><tr><td>info<\/td><td>6<\/td><td>\u60c5\u5831\u30e1\u30c3\u30bb\u30fc\u30b8<\/td><\/tr><tr><td>debug<\/td><td>7<\/td><td>\u30c7\u30d0\u30c3\u30b0\u60c5\u5831<\/td><\/tr><tr><td>none<\/td><td>&#8211;<\/td><td>\u30ed\u30b0\u3092\u9001\u3089\u306a\u3044\uff08\u9664\u5916\u6307\u5b9a\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Cisco\u306b\u304a\u3051\u308bSeverity\u30ec\u30d9\u30eb\u5b9a\u7fa9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cisco\u6a5f\u5668\u3067\u306f\u3001syslog\u306eSeverity\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Level\u30ad\u30fc\u30ef\u30fc\u30c9<\/th><th>\u6570\u5024<\/th><th>\u8aac\u660e<\/th><th>UNIX syslog\u5b9a\u7fa9<\/th><\/tr><\/thead><tbody><tr><td>emergencies<\/td><td>0<\/td><td>\u30b7\u30b9\u30c6\u30e0\u304c\u4e0d\u5b89\u5b9a<\/td><td>LOG_EMERG<\/td><\/tr><tr><td>alerts<\/td><td>1<\/td><td>\u5373\u6642\u51e6\u7406\u304c\u5fc5\u8981<\/td><td>LOG_ALERT<\/td><\/tr><tr><td>critical<\/td><td>2<\/td><td>\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u72b6\u614b<\/td><td>LOG_CRIT<\/td><\/tr><tr><td>errors<\/td><td>3<\/td><td>\u30a8\u30e9\u30fc\u72b6\u614b<\/td><td>LOG_ERR<\/td><\/tr><tr><td>warnings<\/td><td>4<\/td><td>\u8b66\u544a\u72b6\u614b<\/td><td>LOG_WARNING<\/td><\/tr><tr><td>notifications<\/td><td>5<\/td><td>\u6ce8\u610f\u3092\u8981\u3059\u308b\u72b6\u614b<\/td><td>LOG_NOTICE<\/td><\/tr><tr><td>informational<\/td><td>6<\/td><td>\u60c5\u5831\u30e1\u30c3\u30bb\u30fc\u30b8<\/td><td>LOG_INFO<\/td><\/tr><tr><td>debugging<\/td><td>7<\/td><td>\u30c7\u30d0\u30c3\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8<\/td><td>LOG_DEBUG<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>syslog\u306f\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3084\u30b5\u30fc\u30d0\u306e\u30a4\u30d9\u30f3\u30c8\u30ed\u30b0\u3092\u96c6\u3081\u308b\u4ed5\u7d44\u307f\u300d<\/li>\n\n\n\n<li>Facility\u306f\u300c\u3069\u3053\u304b\u3089\u306e\u30ed\u30b0\u304b\u300d\u3001Severity\u306f\u300c\u3069\u306e\u7a0b\u5ea6\u91cd\u8981\u304b\u300d\u3092\u793a\u3059<\/li>\n\n\n\n<li>UDP 514\u756a\u30dd\u30fc\u30c8\u304c\u3088\u304f\u4f7f\u308f\u308c\u308b\uff08\u8efd\u91cf\u3060\u304c\u4fe1\u983c\u6027\u306f\u4f4e\u3044\uff09\u3001TCP 514\u756a\u3092\u4f7f\u3046\u5834\u5408\u3082\u3042\u308b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">syslog\u306e\u8a2d\u5b9a\uff1a\u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cisco\u30eb\u30fc\u30bf\u3084Catalyst\u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067syslog\u6a5f\u80fd\u304c\u6709\u52b9\u3067\u3059\u304c\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u904b\u7528\u4e0a\u4e0d\u5341\u5206\u3067\u3059\u3002\u4e3b\u306a\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u6a5f\u80fd<\/th><th>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/th><\/tr><\/thead><tbody><tr><td>\u30b3\u30f3\u30bd\u30fc\u30eb\u51fa\u529b<\/td><td>\u6709\u52b9\uff08<code>logging console<\/code>\uff09<\/td><\/tr><tr><td>\u30b3\u30f3\u30bd\u30fc\u30eb\u51fa\u529b\u30ec\u30d9\u30eb<\/td><td>debugging\u4ee5\u4e0a\u306e\u5168\u3066\u306e\u30e1\u30c3\u30bb\u30fc\u30b8<\/td><\/tr><tr><td>\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u6307\u5b9a<\/td><td>\u306a\u3057<\/td><\/tr><tr><td>\u30ed\u30b0\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba<\/td><td>4096\u30d0\u30a4\u30c8\uff08\u975e\u5e38\u306b\u5c0f\u3055\u3044\uff09<\/td><\/tr><tr><td>\u30ed\u30b0\u5c65\u6b74\u30b5\u30a4\u30ba<\/td><td>1\u30e1\u30c3\u30bb\u30fc\u30b8<\/td><\/tr><tr><td>\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7<\/td><td>\u7121\u52b9<\/td><\/tr><tr><td>\u540c\u671f\u30ed\u30ae\u30f3\u30b0<\/td><td>\u7121\u52b9<\/td><\/tr><tr><td>syslog\u30b5\u30fc\u30d0\u5229\u7528<\/td><td>\u7121\u52b9<\/td><\/tr><tr><td>syslog\u30b5\u30fc\u30d0IP<\/td><td>\u672a\u8a2d\u5b9a<\/td><\/tr><tr><td>syslog\u30b5\u30fc\u30d0\u9001\u4fe1\u30ec\u30d9\u30eb<\/td><td>informational<\/td><\/tr><tr><td>syslog\u30b5\u30fc\u30d0 facility<\/td><td>local7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u305f\u3081\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3084\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u62e1\u5f35\u3001syslog\u30b5\u30fc\u30d0\u306e\u6307\u5b9a\u306a\u3069\u3092\u5fc5\u305a\u884c\u3046\u306e\u304c\u5b9f\u52d9\u3067\u306f\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5206\u304b\u308a\u3084\u3059\u3044\u30ed\u30b0\u306e\u8868\u793a\u8a2d\u5b9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ed\u30b0\u89e3\u6790\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8a2d\u5b9a\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# service timestamps debug datetime msec localtime show-timezone\n(config)# service timestamps log datetime msec localtime show-timezone\n(config)# service sequence-numbers\n\n(config)# clock timezone JST 9\n(config)# ntp server 10.1.1.10<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>timestamps<\/strong>\uff1a\u30ed\u30b0\u306b\u6642\u523b\u3092\u4ed8\u4e0e\uff08\u30df\u30ea\u79d2\u30fb\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u4ed8\u304d\uff09<\/li>\n\n\n\n<li><strong>sequence-numbers<\/strong>\uff1a\u30ed\u30b0\u306b\u901a\u3057\u756a\u53f7\u3092\u4ed8\u4e0e<\/li>\n\n\n\n<li><strong>NTP<\/strong>\uff1a\u6b63\u78ba\u306a\u6642\u523b\u3092\u7dad\u6301<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3055\u3089\u306b\u3001\u4f5c\u696d\u4e2d\u306b\u30ed\u30b0\u304c\u5272\u308a\u8fbc\u3093\u3067\u898b\u3065\u3089\u304f\u306a\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u306b\u300c\u540c\u671f\u30ed\u30ae\u30f3\u30b0\u300d\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# line console 0\n(config-line)# logging synchronous\n\n(config)# line vty 0 15\n(config-line)# logging synchronous<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">syslog\u30b5\u30fc\u30d0\u306e\u8a2d\u5b9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5916\u90e8\u306esyslog\u30b5\u30fc\u30d0\u3078\u30ed\u30b0\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u6307\u5b9a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# logging buffered 512000<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c84096\u30d0\u30a4\u30c8\u306f\u5c0f\u3055\u3059\u304e\u308b\u305f\u3081\u3001Cisco\u63a8\u5968\u306e <strong>512000\u30d0\u30a4\u30c8<\/strong> \u306b\u5909\u66f4\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">syslog\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# logging host 192.168.10.100<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">syslog\u9001\u4fe1\u30ec\u30d9\u30eb<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# logging trap informational<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 <code>informational (level 6)<\/code> \u304b\u3089 <code>emergencies (level 0)<\/code> \u307e\u3067\u304c\u9001\u4fe1\u5bfe\u8c61\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">syslog\u9001\u4fe1\u6642\u306eFacility<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# logging facility local5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u203b \u3069\u306e <code>local0\u301clocal7<\/code> \u3092\u4f7f\u3046\u304b\u306f\u30b5\u30fc\u30d0\u7ba1\u7406\u8005\u306b\u78ba\u8a8d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">syslog\u8a2d\u5b9a\u4f8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# service timestamps debug datetime msec localtime show-timezone\n(config)# service timestamps log datetime msec localtime show-timezone\n(config)# service sequence-numbers\n\n(config)# clock timezone JST 9\n(config)# ntp server 10.1.1.10\n\n(config)# logging buffered 512000\n(config)# logging host 192.168.10.100\n(config)# logging trap informational\n(config)# logging facility local5\n\n(config)# line console 0\n(config-line)# logging synchronous\n\n(config)# line vty 0 15\n(config-line)# logging synchronous<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">syslog\u51fa\u529b\u30ec\u30d9\u30eb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">syslog\u306e\u30ed\u30b0\u30ec\u30d9\u30eb\u306f <strong><span class=\"swl-marker mark_yellow\">0\uff5e7<\/span><\/strong> \u306e8\u6bb5\u968e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Level<\/th><th>\u30ad\u30fc\u30ef\u30fc\u30c9<\/th><th>\u8aac\u660e<\/th><th>UNIX syslog<\/th><\/tr><\/thead><tbody><tr><td>0<\/td><td>emergencies<\/td><td>\u30b7\u30b9\u30c6\u30e0\u505c\u6b62\u7d1a<\/td><td>LOG_EMERG<\/td><\/tr><tr><td>1<\/td><td>alerts<\/td><td>\u5373\u6642\u5bfe\u5fdc\u5fc5\u8981<\/td><td>LOG_ALERT<\/td><\/tr><tr><td>2<\/td><td>critical<\/td><td>\u81f4\u547d\u7684\u969c\u5bb3<\/td><td>LOG_CRIT<\/td><\/tr><tr><td>3<\/td><td>errors<\/td><td>\u30a8\u30e9\u30fc<\/td><td>LOG_ERR<\/td><\/tr><tr><td>4<\/td><td>warnings<\/td><td>\u8b66\u544a<\/td><td>LOG_WARNING<\/td><\/tr><tr><td>5<\/td><td>notifications<\/td><td>\u6ce8\u610f<\/td><td>LOG_NOTICE<\/td><\/tr><tr><td>6<\/td><td>informational<\/td><td>\u60c5\u5831<\/td><td>LOG_INFO<\/td><\/tr><tr><td>7<\/td><td>debugging<\/td><td>\u30c7\u30d0\u30c3\u30b0\u60c5\u5831<\/td><td>LOG_DEBUG<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306e\u4f01\u696d\u3067\u306f <strong>notifications(5)<\/strong> \u307e\u305f\u306f <strong>informational(6)<\/strong> \u3092\u5e38\u7528\u3057\u3001\u30c8\u30e9\u30d6\u30eb\u8abf\u67fb\u6642\u306e\u307f <strong>debugging(7)<\/strong> \u3092\u4e00\u6642\u7684\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e linkup\/linkdown \u30ed\u30b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Catalyst\u30b9\u30a4\u30c3\u30c1\u3067\u306f\u3001\u6a5f\u7a2e\u306b\u3088\u3063\u3066\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30ea\u30f3\u30af\u30a2\u30c3\u30d7\uff0f\u30ea\u30f3\u30af\u30c0\u30a6\u30f3\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u51fa\u529b\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u306f\u660e\u793a\u7684\u306b\u4ee5\u4e0b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# interface range GigabitEthernet1\/1 - 1\/48\n(config-if)# logging event link-status<\/code><\/pre>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300csyslog\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u300d\u300ctrap\u30ec\u30d9\u30eb\u6307\u5b9a\u306e\u610f\u5473\u300d\u300c\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u62e1\u5f35\u300d\u300clogging synchronous \u306e\u5f79\u5272\u300d\u300clink-status\u306e\u660e\u793a\u7684\u8a2d\u5b9a\u300d\u304c\u3088\u304f\u554f\u308f\u308c\u308b\u30dd\u30a4\u30f3\u30c8\u3067\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\" data=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/05\/syslog.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"syslog\u306e\u57cb\u3081\u8fbc\u307f\u3002\"><\/object><a id=\"wp-block-file--media-649b8369-face-4929-b7e5-61fed8288e05\" href=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/05\/syslog.pdf\">syslog<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>syslog\u3068\u306f syslog\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3084\u30b5\u30fc\u30d0\u304c\u751f\u6210\u3059\u308b\u30ed\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u898f\u683c\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff0f\u30b5\u30fc\u30d0\u578b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u9001\u4fe1\u5074\uff08\u4f8b\uff1aCisco\u30eb\u30fc\u30bf\u3001\u30b9\u30a4\u30c3\u30c1\u306a\u3069\uff09\u304c\u53d7\u4fe1\u5074\uff08\u4f8b\uff1aLinux [&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-169","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\/169","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=169"}],"version-history":[{"count":3,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/169\/revisions"}],"predecessor-version":[{"id":747,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/169\/revisions\/747"}],"wp:attachment":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}