{"id":68787,"date":"2026-03-11T09:53:37","date_gmt":"2026-03-11T01:53:37","guid":{"rendered":"https:\/\/www.dataplugs.com\/bgp-multi-homing-network-resilience\/"},"modified":"2026-03-11T09:56:03","modified_gmt":"2026-03-11T01:56:03","slug":"bgp-multi-homing-network-resilience","status":"publish","type":"post","link":"https:\/\/www.dataplugs.com\/sc\/bgp-multi-homing-network-resilience\/","title":{"rendered":"BGP \u591a\u91cd\u8fde\u63a5\u5982\u4f55\u63d0\u5347\u7f51\u7edc\u97e7\u6027\uff1f"},"content":{"rendered":"<div class=\"section-blog-2025\">\n<p>\u7f51\u7edc\u4e2d\u65ad\u5f88\u5c11\u53ea\u662f\u7531\u786c\u4ef6\u6545\u969c\u9020\u6210\u3002\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u670d\u52a1\u4e2d\u65ad\u5f80\u5f80\u662f\u56e0\u4e3a\u6574\u4f53\u7f51\u7edc\u8fde\u63a5\u4f9d\u8d56\u5355\u4e00\u4e0a\u6e38\u7f51\u7edc\u3002\u4e00\u4e2a ISP \u5185\u90e8\u7684\u8def\u7531\u95ee\u9898\u3001\u4f20\u8f93\u8def\u5f84\u62e5\u585e\uff0c\u6216\u533a\u57df\u6027\u8fd0\u8425\u5546\u6545\u969c\uff0c\u90fd\u53ef\u80fd\u8ba9\u5e94\u7528\u670d\u52a1\u77ac\u95f4\u4e0e\u7528\u6237\u5931\u53bb\u8fde\u63a5\u3002\u5bf9\u4e8e\u8fd0\u884c SaaS \u5e73\u53f0\u3001\u7535\u5546\u7cfb\u7edf\u6216\u9ad8\u6d41\u91cf\u7f51\u7ad9\u7684\u4f01\u4e1a\u6765\u8bf4\uff0c\u786e\u4fdd\u670d\u52a1\u5728\u7f51\u7edc\u5f02\u5e38\u65f6\u4ecd\u7136\u53ef\u4ee5\u88ab\u8bbf\u95ee\uff0c\u662f\u670d\u52a1\u5668\u67b6\u6784\u4e2d\u975e\u5e38\u5173\u952e\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>BGP \u591a\u91cd\u8fde\u63a5\uff08BGP Multi Homing\uff09\u6b63\u662f\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u800c\u8bbe\u8ba1\u3002\u901a\u8fc7\u5c06\u670d\u52a1\u5668\u7f51\u7edc\u540c\u65f6\u8fde\u63a5\u5230\u591a\u4e2a\u4e0a\u6e38\u7f51\u7edc\uff0c\u5e76\u5229\u7528 Border Gateway Protocol \u7ba1\u7406\u8def\u7531\u51b3\u7b56\uff0c\u7cfb\u7edf\u4e0d\u518d\u53ea\u4f9d\u8d56\u5355\u4e00\u8def\u5f84\u8bbf\u95ee\u4e92\u8054\u7f51\u3002\u5f53\u67d0\u4e2a\u7f51\u7edc\u63d0\u4f9b\u5546\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u6d41\u91cf\u53ef\u4ee5\u81ea\u52a8\u5207\u6362\u5230\u5176\u4ed6\u53ef\u7528\u8def\u5f84\uff0c\u4f7f\u90e8\u7f72\u5728\u72ec\u7acb\u670d\u52a1\u5668\u4e0a\u7684\u670d\u52a1\u4f9d\u7136\u4fdd\u6301\u53ef\u8bbf\u95ee\u3002<\/p>\n<h2><strong>\u7406\u89e3 BGP \u5982\u4f55\u63a7\u5236\u4e92\u8054\u7f51\u8def\u7531<\/strong><\/h2>\n<p>\u5168\u7403\u4e92\u8054\u7f51\u5b9e\u9645\u4e0a\u7531\u8bb8\u591a\u4e92\u76f8\u8fde\u63a5\u7684\u7f51\u7edc\u7ec4\u6210\uff0c\u8fd9\u4e9b\u7f51\u7edc\u88ab\u79f0\u4e3a Autonomous Systems\uff08\u81ea\u6cbb\u7cfb\u7edf\uff09\u3002\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\u3001\u4e91\u5e73\u53f0\u3001\u4f01\u4e1a\u7f51\u7edc\u4ee5\u53ca\u4e3b\u673a\u670d\u52a1\u7f51\u7edc\uff0c\u90fd\u4f1a\u901a\u8fc7 Border Gateway Protocol \u5728\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002<\/p>\n<p>BGP \u4f1a\u6839\u636e\u591a\u79cd\u8def\u7531\u5c5e\u6027\uff0c\u4f8b\u5982 AS Path \u957f\u5ea6\u3001Local Preference \u4ee5\u53ca\u4e0d\u540c\u7684\u7b56\u7565\u89c4\u5219\uff0c\u51b3\u5b9a\u6570\u636e\u6d41\u91cf\u5e94\u8be5\u7ecf\u8fc7\u54ea\u6761\u8def\u5f84\u3002\u5f53\u67d0\u6761\u8def\u5f84\u53d8\u5f97\u4e0d\u53ef\u7528\u6216\u4e0d\u7a33\u5b9a\u65f6\uff0c\u8def\u7531\u5668\u4f1a\u66f4\u65b0\u8def\u7531\u8868\u5e76\u9009\u62e9\u66ff\u4ee3\u8def\u5f84\u3002<\/p>\n<p>\u7531\u4e8e BGP \u4f1a\u6301\u7eed\u5728\u4e0d\u540c\u7f51\u7edc\u4e4b\u95f4\u4ea4\u6362\u53ef\u8fbe\u6027\u4fe1\u606f\uff0c\u6574\u4e2a\u4e92\u8054\u7f51\u80fd\u591f\u5728\u8fde\u63a5\u6761\u4ef6\u53d8\u5316\u65f6\u81ea\u52a8\u8c03\u6574\u8def\u7531\uff0c\u8fd9\u4e5f\u662f\u4e92\u8054\u7f51\u80fd\u591f\u4fdd\u6301\u9ad8\u7a33\u5b9a\u6027\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/p>\n<h2><strong>BGP \u591a\u91cd\u8fde\u63a5\u5728\u72ec\u7acb\u670d\u52a1\u5668\u73af\u5883\u4e2d\u7684\u8fd0\u4f5c\u65b9\u5f0f<\/strong><\/h2>\n<p>Multi Homing \u6307\u7684\u662f\u4e00\u4e2a\u7f51\u7edc\u540c\u65f6\u8fde\u63a5\u4e24\u4e2a\u6216\u4ee5\u4e0a\u7684\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u4e0d\u518d\u53ea\u6709\u5355\u4e00 ISP \u4f5c\u4e3a\u4e92\u8054\u7f51\u51fa\u53e3\uff0c\u800c\u662f\u4e0e\u591a\u4e2a\u4e0a\u6e38\u8fd0\u8425\u5546\u5efa\u7acb BGP \u8fde\u63a5\u3002<\/p>\n<p>\u5f53\u670d\u52a1\u5668\u7f51\u7edc\u901a\u8fc7\u591a\u4e2a\u63d0\u4f9b\u5546\u53d1\u5e03\u81ea\u5df1\u7684 IP \u5730\u5740\u6bb5\u65f6\uff0c\u5916\u90e8\u7f51\u7edc\u5c31\u4f1a\u77e5\u9053\u8be5\u76ee\u7684\u5730\u53ef\u4ee5\u901a\u8fc7\u591a\u6761\u8def\u5f84\u5230\u8fbe\u3002\u4e00\u65e6\u5176\u4e2d\u4e00\u6761\u8fde\u63a5\u51fa\u73b0\u95ee\u9898\uff0c\u6d41\u91cf\u4f1a\u81ea\u52a8\u901a\u8fc7\u5176\u4ed6\u8fd0\u8425\u5546\u7ee7\u7eed\u4f20\u8f93\uff0c\u800c\u4e0d\u9700\u8981\u4eba\u5de5\u5e72\u9884\u3002<\/p>\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u5e26\u6765\u4e86 BGP \u591a\u91cd\u8fde\u63a5\u7684\u5197\u4f59\u80fd\u529b\uff0c\u6d88\u9664\u4e86\u5355\u4e00\u8fd0\u8425\u5546\u6240\u5e26\u6765\u7684\u5355\u70b9\u6545\u969c\u95ee\u9898\u3002<\/p>\n<h2><strong>BGP \u591a\u91cd\u8fde\u63a5\u5982\u4f55\u63d0\u5347\u7f51\u7edc\u97e7\u6027<\/strong><\/h2>\n<p>\u90e8\u7f72\u5728\u72ec\u7acb\u670d\u52a1\u5668\u4e0a\u7684\u5e94\u7528\u670d\u52a1\u901a\u5e38\u9700\u8981\u7a33\u5b9a\u4e14\u6301\u7eed\u7684\u7f51\u7edc\u8fde\u63a5\u3002\u5373\u4f7f\u53ea\u662f\u77ed\u6682\u4e2d\u65ad\uff0c\u4e5f\u53ef\u80fd\u5bfc\u81f4\u7f51\u7ad9\u65e0\u6cd5\u8bbf\u95ee\u3001API \u65e0\u6cd5\u54cd\u5e94\u6216\u5728\u7ebf\u670d\u52a1\u505c\u6b62\u8fd0\u884c\u3002<\/p>\n<p>\u591a\u91cd\u8fde\u63a5\u67b6\u6784\u53ef\u4ee5\u8ba9\u8def\u7531\u5728\u5b9e\u65f6\u72b6\u6001\u4e0b\u8fdb\u884c\u8c03\u6574\u3002\u5f53\u67d0\u4e2a ISP \u8fde\u63a5\u53d1\u751f\u6545\u969c\u65f6\uff0cBGP \u4f1a\u64a4\u56de\u8be5\u8def\u5f84\u7684\u8def\u7531\u4fe1\u606f\uff0c\u6d41\u91cf\u968f\u5373\u8f6c\u79fb\u5230\u5176\u4ed6\u53ef\u7528\u7684\u4e0a\u6e38\u7f51\u7edc\u3002\u8fd9\u4e00\u8fc7\u7a0b\u5f62\u6210 BGP \u591a\u91cd\u8fde\u63a5\u7684\u81ea\u52a8\u6545\u969c\u5207\u6362\u673a\u5236\u3002<\/p>\n<p>\u5bf9\u4e8e\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u670d\u52a1\uff0c\u4f8b\u5982 SaaS \u5e73\u53f0\u3001\u7535\u5546\u7f51\u7ad9\u6216\u91d1\u878d\u7cfb\u7edf\uff0c\u8fd9\u79cd\u81ea\u52a8\u5207\u6362\u80fd\u529b\u80fd\u591f\u663e\u8457\u51cf\u5c11\u670d\u52a1\u4e2d\u65ad\u7684\u98ce\u9669\u3002<\/p>\n<h2><strong>\u6d41\u91cf\u63a7\u5236\u4e0e\u8def\u7531\u4f18\u5316<\/strong><\/h2>\n<p>\u9664\u4e86\u5197\u4f59\u80fd\u529b\u4e4b\u5916\uff0cBGP \u8fd8\u4e3a\u7f51\u7edc\u7ba1\u7406\u5458\u63d0\u4f9b\u66f4\u7cbe\u7ec6\u7684\u6d41\u91cf\u63a7\u5236\u80fd\u529b\u3002\u5de5\u7a0b\u5e08\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574 Local Preference\u3001AS Path \u7b49\u8def\u7531\u5c5e\u6027\uff0c\u5f71\u54cd\u7279\u5b9a\u6d41\u91cf\u7ecf\u8fc7\u54ea\u4e00\u4e2a\u8fd0\u8425\u5546\u3002<\/p>\n<p>\u8fd9\u4f7f\u4f01\u4e1a\u80fd\u591f\u6839\u636e\u5ef6\u8fdf\u3001\u5730\u533a\u8fde\u63a5\u8d28\u91cf\u6216\u5e26\u5bbd\u8d44\u6e90\u6765\u4f18\u5316\u6d41\u91cf\u8def\u5f84\u3002\u4f8b\u5982\uff0c\u524d\u5f80\u67d0\u4e9b\u5730\u533a\u7684\u6d41\u91cf\u53ef\u4ee5\u4f18\u5148\u9009\u62e9\u5728\u8be5\u533a\u57df\u62e5\u6709\u66f4\u5f3a\u7f51\u7edc\u8986\u76d6\u7684\u8fd0\u8425\u5546\u3002<\/p>\n<p>\u8fd9\u79cd\u5bf9\u6d41\u91cf\u8fdb\u51fa\u7684\u63a7\u5236\u80fd\u529b\uff0c\u662f BGP \u591a\u91cd\u8fde\u63a5\u8def\u7531\u7684\u91cd\u8981\u4f18\u52bf\uff0c\u4e5f\u8ba9\u670d\u52a1\u5668\u90e8\u7f72\u80fd\u591f\u5728\u4e0d\u540c\u7f51\u7edc\u73af\u5883\u4e0b\u4fdd\u6301\u7a33\u5b9a\u6027\u80fd\u3002<\/p>\n<h2><strong>\u591a\u91cd\u8fde\u63a5\u5982\u4f55\u63d0\u5347\u4e92\u8054\u7f51\u53ef\u9760\u6027<\/strong><\/h2>\n<p>\u5927\u591a\u6570\u7f51\u7edc\u6545\u969c\u53ea\u4f1a\u5f71\u54cd\u7279\u5b9a\u7684\u8fd0\u8425\u5546\u6216\u7f51\u7edc\u533a\u57df\uff0c\u800c\u4e0d\u4f1a\u5f71\u54cd\u6574\u4e2a\u4e92\u8054\u7f51\u3002\u4f8b\u5982\u5149\u7ea4\u4e2d\u65ad\u3001\u8def\u7531\u9519\u8bef\u6216\u5c40\u90e8\u62e5\u585e\uff0c\u901a\u5e38\u53ea\u5f71\u54cd\u5355\u4e00\u7f51\u7edc\u3002<\/p>\n<p>\u5982\u679c\u670d\u52a1\u5668\u90e8\u7f72\u53ea\u4f9d\u8d56\u4e00\u4e2a\u8fd0\u8425\u5546\uff0c\u4e00\u65e6\u4e0a\u6e38\u7f51\u7edc\u51fa\u73b0\u95ee\u9898\uff0c\u670d\u52a1\u5c31\u53ef\u80fd\u5b8c\u5168\u65e0\u6cd5\u8bbf\u95ee\u3002<\/p>\n<p>\u901a\u8fc7 BGP \u591a\u91cd\u8fde\u63a5\uff0c\u7f51\u7edc\u8fde\u63a5\u88ab\u5206\u6563\u5230\u591a\u4e2a\u8fd0\u8425\u5546\u4e4b\u95f4\u3002\u5982\u679c\u5176\u4e2d\u4e00\u6761\u8def\u5f84\u53d8\u5f97\u4e0d\u7a33\u5b9a\uff0c\u6d41\u91cf\u53ef\u4ee5\u81ea\u52a8\u8f6c\u79fb\u5230\u5176\u4ed6\u4ecd\u7136\u6b63\u5e38\u8fd0\u884c\u7684\u7f51\u7edc\u3002\u8fd9\u79cd\u8fde\u63a5\u591a\u6837\u5316\u8bbe\u8ba1\u53ef\u4ee5\u5927\u5e45\u964d\u4f4e\u5355\u4e00\u7f51\u7edc\u4e8b\u4ef6\u5bfc\u81f4\u670d\u52a1\u4e2d\u65ad\u7684\u6982\u7387\u3002<\/p>\n<h2><strong>\u90e8\u7f72 BGP \u591a\u91cd\u8fde\u63a5\u7684\u57fa\u672c\u6761\u4ef6<\/strong><\/h2>\n<p>\u8981\u5efa\u7acb\u591a\u91cd\u8fde\u63a5\u7f51\u7edc\u67b6\u6784\uff0c\u901a\u5e38\u9700\u8981\u83b7\u5f97 Autonomous System Number\uff0c\u5e76\u62e5\u6709\u4e00\u6bb5\u53ef\u4ee5\u5411\u591a\u4e2a\u8fd0\u8425\u5546\u53d1\u5e03\u7684 IP \u5730\u5740\u6bb5\u3002<\/p>\n<p>\u8fb9\u754c\u8def\u7531\u5668\u9700\u8981\u4e0e\u4e0d\u540c\u4e0a\u6e38\u8fd0\u8425\u5546\u5efa\u7acb BGP \u8fde\u63a5\uff0c\u5e76\u901a\u8fc7\u8def\u7531\u7b56\u7565\u63a7\u5236\u6d41\u91cf\u7684\u8fdb\u51fa\u65b9\u5411\u3002\u540c\u65f6\uff0c\u7f51\u7edc\u7ba1\u7406\u5458\u8fd8\u9700\u8981\u914d\u7f6e\u8def\u7531\u8fc7\u6ee4\u4e0e prefix 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