{"id":1320,"date":"2025-10-08T02:52:07","date_gmt":"2025-10-07T17:52:07","guid":{"rendered":"https:\/\/mylifeisbeautiful555.net\/?page_id=1320"},"modified":"2025-10-08T03:10:51","modified_gmt":"2025-10-07T18:10:51","slug":"stp%e6%8b%a1%e5%bc%b5%e6%8a%80%e8%a1%93bpdu-guard-bpdu-filtering","status":"publish","type":"page","link":"https:\/\/mylifeisbeautiful555.net\/?page_id=1320","title":{"rendered":"STP\u62e1\u5f35\u6280\u8853(BPDU Guard, BPDU Filtering)"},"content":{"rendered":"\n
<\/td>BPDU Guard<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

BPDU Guard \u306f\u3001PortFast \u304c\u8a2d\u5b9a\u3055\u308c\u305f\u30dd\u30fc\u30c8\u306b\u8aa4\u3063\u3066\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u63a5\u7d9a\u3055\u308c\u305f\u5834\u5408\u306b\u3001\u81ea\u52d5\u7684\u306b\u305d\u306e\u30dd\u30fc\u30c8\u3092\u906e\u65ad\u3059\u308b(error disable\u3059\u308b)\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n

\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/h5>\n\n\n\n
    \n
  1. PortFast \u30dd\u30fc\u30c8\u306f\u672c\u6765\u3001PC\u3084\u30d7\u30ea\u30f3\u30bf\u306a\u3069\u306e\u30a8\u30f3\u30c9\u30c7\u30d0\u30a4\u30b9<\/strong>\u304c\u63a5\u7d9a\u3055\u308c\u308b\u3053\u3068\u3092\u60f3\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002
    \u8aa4\u3063\u3066\u5225\u306e\u30b9\u30a4\u30c3\u30c1\u3092\u63a5\u7d9a\u3059\u308b\u3068\u3001STP \u306e\u5236\u5fa1\u30e1\u30c3\u30bb\u30fc\u30b8(BPDU)\u304c\u9001\u3089\u308c\u3066\u304d\u307e\u3059\u3002<\/li>\n\n\n\n
  2. \u305d\u306e\u77ac\u9593\u3001BPDU Guard \u304c\u300c\u7570\u5e38\u306aBPDU\u3092\u691c\u51fa\u300d<\/strong> \u3057\u3066\u3001
    \u2192 \u30dd\u30fc\u30c8\u3092\u300cerror-disabled\uff08\u30a8\u30e9\u30fc\u7121\u52b9\uff09\u300d\u72b6\u614b\u306b\u3057\u3066\u901a\u4fe1\u3092\u6b62\u3081\u307e\u3059\u3002<\/strong><\/li>\n<\/ol>\n\n\n\n

    \u3053\u308c\u306b\u3088\u308a\u3001\u30eb\u30fc\u30d7\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n\n\n\n

    \u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n

    \u500b\u5225\u30dd\u30fc\u30c8\u306b\u8a2d\u5b9a\uff1a<\/strong><\/p>\n\n\n\n

    Switch(config)# interface FastEthernet0\/1\nSwitch(config-if)# spanning-tree portfast\nSwitch(config-if)# spanning-tree bpduguard enable<\/code><\/pre>\n\n\n\n
    \u5168PortFast\u30dd\u30fc\u30c8\u3067\u81ea\u52d5\u6709\u52b9\u306b\u3059\u308b\u30b0\u30ed\u30fc\u30d0\u30eb\u8a2d\u5b9a\uff1a<\/strong><\/p>\n\n\n\n
    Switch(config)# spanning-tree portfast default\nSwitch(config)# spanning-tree portfast bpduguard default<\/code><\/pre>\n\n\n\n
    \u30dd\u30fc\u30c8\u304c\u906e\u65ad\u3055\u308c\u305f\u5834\u5408<\/h3>\n\n\n\n
    BPDU\u3092\u53d7\u4fe1\u3059\u308b\u3068\u3001\u305d\u306e\u30dd\u30fc\u30c8\u306f\u300cerror-disabled\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
    \u78ba\u8a8d\u30b3\u30de\u30f3\u30c9\uff1a<\/p>\n\n\n\n
    Switch# show interfaces status err-disabled<\/code><\/pre>\n\n\n\n
    \u5fa9\u65e7\u3059\u308b\u306b\u306f\uff1a<\/p>\n\n\n\n
    Switch(config)# interface FastEthernet0\/1\nSwitch(config-if)# shutdown\nSwitch(config-if)# no shutdown<\/code><\/pre>\n\n\n\n
    \u307e\u305f\u306f\u81ea\u52d5\u5fa9\u65e7\u3092\u8a2d\u5b9a\u3059\u308b<\/strong>\uff1a30sec\u3067\u5fa9\u65e7\u3059\u308b\u5834\u5408<\/p>\n\n\n\n
    Switch(config)# errdisable recovery cause bpduguard\nSwitch(config)# errdisable recovery interval 30<\/code><\/pre>\n\n\n\n
    <\/td>BPDU\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    BPDU\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u306f\u3001STP<\/strong> \u306b\u304a\u3044\u3066\u3001BPDU\u30d5\u30ec\u30fc\u30e0\u306e\u9001\u53d7\u4fe1\u3092\u5236\u5fa1\u3059\u308b\u6a5f\u80fd<\/strong>\u3002
    \u6709\u52b9\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u30dd\u30fc\u30c8\u3067\u306f BPDU \u306e\u9001\u53d7\u4fe1\u304c\u884c\u308f\u308c\u306a\u304f\u306a\u308b<\/strong>\u304b\u3001\u7279\u5b9a\u6761\u4ef6\u3067\u7121\u52b9\u5316\u3055\u308c\u308b<\/strong>\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
    \u8a2d\u5b9a\u30e2\u30fc\u30c9\u306e\u9055\u3044<\/h2>\n\n\n\n
    \u25a0\u30b0\u30ed\u30fc\u30d0\u30eb\u8a2d\u5b9a\u30e2\u30fc\u30c9<\/h3>\n\n\n\n
    Switch(config)# spanning-tree portfast bpdufilter default<\/code><\/pre>\n\n\n\n
    \u3053\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3068\u3001<\/p>\n\n\n\n
      \n
    • PortFast \u304c\u6709\u52b9\u306a\u30dd\u30fc\u30c8\u306b\u9069\u7528\u3055\u308c\u308b\u3002<\/li>\n\n\n\n
    • \u30ea\u30f3\u30af\u30a2\u30c3\u30d7\u6642\u306b\u4e00\u5ea6\u3060\u3051BPDU\u3092\u9001\u4fe1\u3059\u308b\u3002<\/strong><\/li>\n\n\n\n
    • \u305d\u306e\u5f8c\u3001BPDU\u3092\u53d7\u4fe1\u3057\u305f\u5834\u5408\u306f PortFast \u3092\u7121\u52b9\u5316\u3057\u3001\u901a\u5e38\u306eSTP\u30dd\u30fc\u30c8\u306b\u623b\u308b\u3002<\/strong><\/li>\n<\/ul>\n\n\n\n
      🟢 \u5b89\u5168\u3067\u63a8\u5968\u3055\u308c\u308b\u4f7f\u3044\u65b9\u3067\u3001
      \u3000\u3000PortFast\u30dd\u30fc\u30c8\u306b\u8aa4\u3063\u3066\u30b9\u30a4\u30c3\u30c1\u304c\u63a5\u7d9a\u3055\u308c\u3066\u3082\u81ea\u52d5\u9632\u5fa1\u3067\u304d\u308b<\/p>\n\n\n\n
      \u25a0\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u8a2d\u5b9a\u30e2\u30fc\u30c9<\/h3>\n\n\n\n
      Switch(config-if)# spanning-tree bpdufilter enable<\/code><\/pre>\n\n\n\n
      \u3053\u306e\u8a2d\u5b9a\u306f\u5f37\u5236\u7684\u306bBPDU\u9001\u53d7\u4fe1\u3092\u906e\u65ad<\/strong>\u3057\u307e\u3059\u3002
      \u3064\u307e\u308a\u3001<\/p>\n\n\n\n
        \n
      • BPDU\u3092\u4e00\u5207\u9001\u3089\u306a\u3044<\/strong><\/li>\n\n\n\n
      • BPDU\u3092\u53d7\u3051\u53d6\u3063\u3066\u3082\u7121\u8996\u3059\u308b<\/strong><\/li>\n<\/ul>\n\n\n\n
        🔴 \u8aa4\u3063\u3066\u30b9\u30a4\u30c3\u30c1\u9593\u30ea\u30f3\u30af\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3001STP\u304c\u6a5f\u80fd\u305b\u305a\u30eb\u30fc\u30d7\u304c\u767a\u751f<\/strong>\u3059\u308b\u3002<\/p>\n\n\n\n
        \u25a0\u5177\u4f53\u7684\u306a\u5229\u7528\u30b7\u30fc\u30f3<\/h3>\n\n\n\n
          \n
        • \u30b0\u30ed\u30fc\u30d0\u30eb\u8a2d\u5b9a\u7248<\/strong>\n
            \n
          • PortFast\u3092\u4f7f\u3046\u5168\u30dd\u30fc\u30c8\u3067\u3001BPDU Guard\u3092\u4f7f\u308f\u305a\u306b\u8efd\u3044\u4fdd\u8b77\u3092\u3057\u305f\u3044\u5834\u5408\u3002<\/li>\n\n\n\n
          • \u4f8b\uff1a\u30b5\u30fc\u30d0\u3084PC\u304c\u63a5\u7d9a\u3055\u308c\u308b\u30a2\u30af\u30bb\u30b9\u5c64\u30b9\u30a4\u30c3\u30c1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u8a2d\u5b9a\u7248<\/strong>\n
              \n
            • \u8a66\u9a13\u30fb\u691c\u8a3c\u74b0\u5883\u306a\u3069\u3001\u610f\u56f3\u7684\u306bBPDU\u3092\u906e\u65ad\u3057\u305f\u3044\u5834\u5408\u3002<\/li>\n\n\n\n
            • \u4f8b\uff1aSTP\u306e\u306a\u3044\u72ec\u7acb\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u63a5\u7d9a\u3059\u308b\u30dd\u30fc\u30c8\u3002

              ⚠️ \u6ce8\u610f\u70b9<\/li>\n\n\n\n
            • \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u30e2\u30fc\u30c9\u306f\u3001\u30eb\u30fc\u30d7\u767a\u751f\u30ea\u30b9\u30af\u304c\u975e\u5e38\u306b\u9ad8\u3044<\/strong>\u3002<\/li>\n\n\n\n
            • \u30b0\u30ed\u30fc\u30d0\u30eb\u30e2\u30fc\u30c9\u306f\u3001BPDU Guard\u3088\u308a\u7de9\u3084\u304b\u3060\u304c\u5b89\u5168<\/strong>\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
              \u25a0\u305d\u306e\u4ed6\u306e\u62e1\u5f35\u6a5f\u80fd\u3068\u306e\u6bd4\u8f03<\/p>\n\n\n\n
              \u6a5f\u80fd<\/th>\u76ee\u7684<\/th>\u52d5\u4f5c\u5185\u5bb9<\/th>\u5b89\u5168\u6027<\/th>\u63a8\u5968\u8a2d\u5b9a<\/th><\/tr><\/thead>
              PortFast<\/strong><\/td>\u5373Forwarding\u5316<\/td>STP\u9077\u79fb\u30b9\u30ad\u30c3\u30d7<\/td>\u9ad8\u3044<\/td>\u30db\u30b9\u30c8\u30dd\u30fc\u30c8<\/td><\/tr>
              BPDU Guard<\/strong><\/td>BPDU\u691c\u77e5\u3067\u906e\u65ad<\/td>error-disable\u5316<\/td>\u9ad8\u3044<\/td>PortFast\u3068\u4f75\u7528<\/td><\/tr>
              BPDU Filter (global)<\/strong><\/td>\u4e00\u6642\u7684BPDU\u6291\u5236<\/td>BPDU\u53d7\u4fe1\u3067\u81ea\u52d5\u89e3\u9664<\/td>\u4e2d\u301c\u9ad8<\/td>PortFast\u3068\u4f75\u7528<\/td><\/tr>
              BPDU Filter (interface)<\/strong><\/td>\u5b8c\u5168\u906e\u65ad<\/td>BPDU\u9001\u53d7\u4fe1\u7121\u8996<\/td>\u4f4e\u3044<\/td>\u7ba1\u7406\u8005\u7528\u9014\u306e\u307f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
              <\/p>\n","protected":false},"excerpt":{"rendered":"
              BPDU Guard \u306f\u3001PortFast \u304c\u8a2d\u5b9a\u3055\u308c\u305f\u30dd\u30fc\u30c8\u306b\u8aa4\u3063\u3066\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u304c\u63a5\u7d9a\u3055\u308c\u305f\u5834\u5408\u306b\u3001\u81ea\u52d5\u7684\u306b\u305d\u306e\u30dd\u30fc\u30c8\u3092\u906e\u65ad\u3059\u308b(error disable\u3059\u308b)\u6a5f\u80fd\u3067\u3059\u3002 \u52d5\u4f5c\u306e\u4ed5\u7d44\u307f \u3053\u308c\u306b\u3088\u308a\u3001 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1320","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1320"}],"version-history":[{"count":13,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1320\/revisions"}],"predecessor-version":[{"id":1345,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1320\/revisions\/1345"}],"wp:attachment":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}