{"id":68788,"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":"2026-03-11T09:57:48","modified_gmt":"2026-03-11T01:57:48","slug":"bgp-multi-homing-network-resilience","status":"publish","type":"post","link":"https:\/\/www.dataplugs.com\/tc\/bgp-multi-homing-network-resilience\/","title":{"rendered":"BGP \u591a\u91cd\u9023\u7dda\u5982\u4f55\u63d0\u5347\u7db2\u8def\u97cc\u6027\uff1f"},"content":{"rendered":"<div class=\"section-blog-2025\">\n<p>\u7db2\u8def\u4e2d\u65b7\u5f88\u5c11\u53ea\u662f\u7531\u786c\u9ad4\u6545\u969c\u9020\u6210\u3002\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u670d\u52d9\u4e2d\u65b7\u5f80\u5f80\u662f\u56e0\u70ba\u6574\u500b\u7db2\u8def\u9023\u7dda\u4f9d\u8cf4\u55ae\u4e00\u4e0a\u6e38\u7db2\u8def\u3002\u4e00\u500b ISP \u5167\u90e8\u7684\u8def\u7531\u554f\u984c\u3001\u50b3\u8f38\u8def\u5f91\u7684\u58c5\u585e\uff0c\u6216\u5340\u57df\u6027\u96fb\u4fe1\u5546\u6545\u969c\uff0c\u90fd\u53ef\u80fd\u8b93\u61c9\u7528\u670d\u52d9\u77ac\u9593\u8207\u4f7f\u7528\u8005\u5931\u53bb\u9023\u7dda\u3002\u5c0d\u65bc\u904b\u884c SaaS \u5e73\u53f0\u3001\u96fb\u5b50\u5546\u52d9\u7cfb\u7d71\u6216\u9ad8\u6d41\u91cf\u7db2\u7ad9\u7684\u4f01\u696d\u800c\u8a00\uff0c\u78ba\u4fdd\u670d\u52d9\u5728\u7db2\u8def\u7570\u5e38\u6642\u4ecd\u7136\u53ef\u4ee5\u88ab\u5b58\u53d6\uff0c\u662f\u4f3a\u670d\u5668\u67b6\u69cb\u4e2d\u6975\u70ba\u91cd\u8981\u7684\u4e00\u74b0\u3002<\/p>\n<p>BGP \u591a\u91cd\u9023\u7dda\uff08BGP Multi Homing\uff09\u6b63\u662f\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\u800c\u8a2d\u8a08\u3002\u900f\u904e\u5c07\u4f3a\u670d\u5668\u7db2\u8def\u540c\u6642\u9023\u63a5\u81f3\u591a\u500b\u4e0a\u6e38\u7db2\u8def\uff0c\u4e26\u5229\u7528 Border Gateway Protocol \u7ba1\u7406\u8def\u7531\u6c7a\u7b56\uff0c\u7cfb\u7d71\u4e0d\u518d\u53ea\u4f9d\u8cf4\u55ae\u4e00\u8def\u5f91\u9023\u63a5\u7db2\u969b\u7db2\u8def\u3002\u7576\u67d0\u500b\u7db2\u8def\u4f9b\u61c9\u5546\u51fa\u73fe\u554f\u984c\u6642\uff0c\u6d41\u91cf\u53ef\u4ee5\u81ea\u52d5\u8f49\u5411\u5176\u4ed6\u53ef\u7528\u8def\u5f91\uff0c\u4f7f\u90e8\u7f72\u5728\u5c08\u5c6c\u4f3a\u670d\u5668\u4e0a\u7684\u670d\u52d9\u4f9d\u7136\u4fdd\u6301\u53ef\u7528\u3002<\/p>\n<h2><strong>\u7406\u89e3 BGP \u5982\u4f55\u63a7\u5236\u7db2\u969b\u7db2\u8def\u8def\u7531<\/strong><\/h2>\n<p>\u5168\u7403\u7db2\u969b\u7db2\u8def\u5176\u5be6\u662f\u7531\u8a31\u591a\u4e92\u76f8\u9023\u63a5\u7684\u7db2\u8def\u6240\u7d44\u6210\uff0c\u9019\u4e9b\u7db2\u8def\u88ab\u7a31\u70ba Autonomous Systems\uff08\u81ea\u6cbb\u7cfb\u7d71\uff09\u3002\u7db2\u969b\u7db2\u8def\u670d\u52d9\u4f9b\u61c9\u5546\u3001\u96f2\u7aef\u5e73\u53f0\u3001\u4f01\u696d\u7db2\u8def\u4ee5\u53ca\u4e3b\u6a5f\u670d\u52d9\u7db2\u8def\uff0c\u90fd\u662f\u900f\u904e Border Gateway Protocol \u5728\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7d71\u4e4b\u9593\u4ea4\u63db\u8def\u7531\u8cc7\u8a0a\u3002<\/p>\n<p>BGP \u6703\u6839\u64da\u591a\u7a2e\u8def\u7531\u5c6c\u6027\uff0c\u4f8b\u5982 AS Path \u9577\u5ea6\u3001Local Preference \u4ee5\u53ca\u5404\u7a2e\u7b56\u7565\u898f\u5247\uff0c\u6c7a\u5b9a\u8cc7\u6599\u6d41\u91cf\u61c9\u8a72\u7d93\u904e\u54ea\u689d\u8def\u5f91\u3002\u7576\u67d0\u689d\u8def\u5f91\u8b8a\u5f97\u4e0d\u53ef\u7528\u6216\u4e0d\u7a69\u5b9a\u6642\uff0c\u8def\u7531\u5668\u6703\u66f4\u65b0\u8def\u7531\u8868\u4e26\u9078\u64c7\u66ff\u4ee3\u8def\u5f91\u3002<\/p>\n<p>\u7531\u65bc BGP \u6703\u6301\u7e8c\u5728\u4e0d\u540c\u7db2\u8def\u4e4b\u9593\u4ea4\u63db\u53ef\u9054\u6027\u8cc7\u8a0a\uff0c\u6574\u500b\u7db2\u8def\u53ef\u4ee5\u5728\u9023\u7dda\u689d\u4ef6\u8b8a\u5316\u6642\u81ea\u52d5\u8abf\u6574\u8def\u7531\uff0c\u9019\u4e5f\u662f\u7db2\u969b\u7db2\u8def\u80fd\u5920\u4fdd\u6301\u9ad8\u97cc\u6027\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/p>\n<h2><strong>BGP \u591a\u91cd\u9023\u7dda\u5728\u5c08\u5c6c\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\u7684\u904b\u4f5c\u65b9\u5f0f<\/strong><\/h2>\n<p>Multi Homing \u6307\u7684\u662f\u4e00\u500b\u7db2\u8def\u540c\u6642\u9023\u63a5\u5230\u5169\u500b\u6216\u4ee5\u4e0a\u7684\u7db2\u969b\u7db2\u8def\u670d\u52d9\u4f9b\u61c9\u5546\u3002\u63db\u53e5\u8a71\u8aaa\uff0c\u4e0d\u518d\u53ea\u6709\u55ae\u4e00 ISP \u4f5c\u70ba\u901a\u5f80\u7db2\u969b\u7db2\u8def\u7684\u51fa\u53e3\uff0c\u800c\u662f\u8207\u591a\u500b\u4e0a\u6e38\u96fb\u4fe1\u5546\u5efa\u7acb BGP \u9023\u7dda\u3002<\/p>\n<p>\u7576\u4f3a\u670d\u5668\u7db2\u8def\u900f\u904e\u591a\u500b\u4f9b\u61c9\u5546\u5ba3\u544a\u81ea\u5df1\u7684 IP \u4f4d\u5740\u5340\u6bb5\u6642\uff0c\u5916\u90e8\u7db2\u8def\u5c31\u6703\u77e5\u9053\u8a72\u76ee\u7684\u5730\u53ef\u4ee5\u900f\u904e\u591a\u689d\u8def\u5f91\u5230\u9054\u3002\u4e00\u65e6\u5176\u4e2d\u4e00\u689d\u9023\u7dda\u767c\u751f\u554f\u984c\uff0c\u6d41\u91cf\u6703\u81ea\u52d5\u7d93\u7531\u5176\u4ed6\u4f9b\u61c9\u5546\u7e7c\u7e8c\u50b3\u8f38\uff0c\u800c\u4e0d\u9700\u8981\u4eba\u5de5\u4ecb\u5165\u3002<\/p>\n<p>\u9019\u7a2e\u8a2d\u8a08\u5e36\u4f86 BGP \u591a\u91cd\u9023\u7dda\u7684\u5099\u63f4\u80fd\u529b\uff0c\u6d88\u9664\u4e86\u55ae\u4e00\u96fb\u4fe1\u5546\u6240\u9020\u6210\u7684\u55ae\u9ede\u6545\u969c\u554f\u984c\u3002<\/p>\n<h2><strong>BGP \u591a\u91cd\u9023\u7dda\u5982\u4f55\u63d0\u5347\u7db2\u8def\u97cc\u6027<\/strong><\/h2>\n<p>\u90e8\u7f72\u5728\u5c08\u5c6c\u4f3a\u670d\u5668\u4e0a\u7684\u61c9\u7528\u670d\u52d9\u901a\u5e38\u9700\u8981\u7a69\u5b9a\u4e14\u6301\u7e8c\u7684\u7db2\u8def\u9023\u7dda\u3002\u5373\u4f7f\u53ea\u662f\u77ed\u66ab\u7684\u4e2d\u65b7\uff0c\u4e5f\u53ef\u80fd\u5c0e\u81f4\u7db2\u7ad9\u7121\u6cd5\u5b58\u53d6\u3001API \u7121\u6cd5\u56de\u61c9\u6216\u4ea4\u6613\u7cfb\u7d71\u505c\u6b62\u904b\u4f5c\u3002<\/p>\n<p>\u591a\u91cd\u9023\u7dda\u67b6\u69cb\u53ef\u4ee5\u8b93\u8def\u7531\u5728\u5373\u6642\u72c0\u614b\u4e0b\u9032\u884c\u8abf\u6574\u3002\u7576\u67d0\u500b ISP \u9023\u7dda\u4e2d\u65b7\u6642\uff0cBGP \u6703\u64a4\u56de\u8a72\u8def\u5f91\u7684\u8def\u7531\u8cc7\u8a0a\uff0c\u6d41\u91cf\u96a8\u5373\u8f49\u79fb\u81f3\u5176\u4ed6\u53ef\u7528\u7684\u4e0a\u6e38\u4f9b\u61c9\u5546\u3002\u9019\u500b\u904e\u7a0b\u5f62\u6210 BGP \u591a\u91cd\u9023\u7dda\u7684\u81ea\u52d5\u6545\u969c\u5207\u63db\u6a5f\u5236\u3002<\/p>\n<p>\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u670d\u52d9\uff0c\u4f8b\u5982 SaaS \u5e73\u53f0\u3001\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\u6216\u91d1\u878d\u7cfb\u7d71\u800c\u8a00\uff0c\u9019\u7a2e\u81ea\u52d5\u5207\u63db\u80fd\u529b\u53ef\u4ee5\u5927\u5e45\u964d\u4f4e\u670d\u52d9\u4e2d\u65b7\u7684\u98a8\u96aa\u3002<\/p>\n<h2><strong>\u6d41\u91cf\u63a7\u5236\u8207\u8def\u7531\u6700\u4f73\u5316<\/strong><\/h2>\n<p>\u9664\u4e86\u5099\u63f4\u80fd\u529b\u4e4b\u5916\uff0cBGP \u4e5f\u63d0\u4f9b\u7db2\u8def\u7ba1\u7406\u54e1\u66f4\u7d30\u7dfb\u7684\u6d41\u91cf\u63a7\u5236\u80fd\u529b\u3002\u5de5\u7a0b\u5e2b\u53ef\u4ee5\u900f\u904e\u8abf\u6574 Local Preference\u3001AS Path \u7b49\u8def\u7531\u5c6c\u6027\uff0c\u5f71\u97ff\u7279\u5b9a\u6d41\u91cf\u7d93\u7531\u54ea\u500b\u96fb\u4fe1\u5546\u50b3\u8f38\u3002<\/p>\n<p>\u9019\u8b93\u4f01\u696d\u53ef\u4ee5\u6839\u64da\u5ef6\u9072\u3001\u5730\u5340\u9023\u7dda\u54c1\u8cea\u6216\u983b\u5bec\u8cc7\u6e90\u4f86\u6700\u4f73\u5316\u6d41\u91cf\u8def\u5f91\u3002\u4f8b\u5982\uff0c\u524d\u5f80\u67d0\u4e9b\u5730\u5340\u7684\u6d41\u91cf\u53ef\u4ee5\u512a\u5148\u9078\u64c7\u5728\u8a72\u5340\u57df\u5177\u6709\u66f4\u4f73\u7db2\u8def\u8986\u84cb\u7684\u96fb\u4fe1\u5546\u3002<\/p>\n<p>\u9019\u7a2e\u5c0d\u6d41\u91cf\u9032\u51fa\u7684\u63a7\u5236\u80fd\u529b\uff0c\u662f BGP \u591a\u91cd\u9023\u7dda\u8def\u7531\u7684\u91cd\u8981\u512a\u52e2\uff0c\u4e5f\u8b93\u4f3a\u670d\u5668\u90e8\u7f72\u80fd\u5728\u4e0d\u540c\u7db2\u8def\u74b0\u5883\u4e0b\u7dad\u6301\u7a69\u5b9a\u6548\u80fd\u3002<\/p>\n<h2><strong>\u591a\u91cd\u9023\u7dda\u5982\u4f55\u63d0\u5347\u7db2\u969b\u7db2\u8def\u53ef\u9760\u6027<\/strong><\/h2>\n<p>\u5927\u591a\u6578\u7db2\u8def\u6545\u969c\u53ea\u6703\u5f71\u97ff\u7279\u5b9a\u7684\u96fb\u4fe1\u5546\u6216\u7db2\u8def\u5340\u6bb5\uff0c\u800c\u4e0d\u662f\u6574\u500b\u7db2\u969b\u7db2\u8def\u3002\u4f8b\u5982\u5149\u7e96\u4e2d\u65b7\u3001\u8def\u7531\u932f\u8aa4\u6216\u5c40\u90e8\u58c5\u585e\uff0c\u90fd\u53ef\u80fd\u53ea\u5f71\u97ff\u55ae\u4e00\u4f9b\u61c9\u5546\u3002<\/p>\n<p>\u5982\u679c\u4f3a\u670d\u5668\u90e8\u7f72\u53ea\u4f9d\u8cf4\u55ae\u4e00\u96fb\u4fe1\u5546\uff0c\u4e00\u65e6\u4e0a\u6e38\u7db2\u8def\u51fa\u73fe\u554f\u984c\uff0c\u670d\u52d9\u5c31\u53ef\u80fd\u5b8c\u5168\u7121\u6cd5\u88ab\u5b58\u53d6\u3002<\/p>\n<p>\u900f\u904e BGP \u591a\u91cd\u9023\u7dda\uff0c\u7db2\u8def\u9023\u7dda\u88ab\u5206\u6563\u5230\u591a\u500b\u96fb\u4fe1\u5546\u4e4b\u9593\u3002\u5982\u679c\u5176\u4e2d\u4e00\u689d\u8def\u5f91\u4e0d\u7a69\u5b9a\uff0c\u6d41\u91cf\u53ef\u4ee5\u81ea\u52d5\u8f49\u79fb\u81f3\u5176\u4ed6\u4ecd\u7136\u6b63\u5e38\u904b\u4f5c\u7684\u7db2\u8def\u3002\u9019\u7a2e\u9023\u7dda\u591a\u6a23\u5316\u7684\u8a2d\u8a08\u80fd\u5927\u5e45\u964d\u4f4e\u55ae\u4e00\u7db2\u8def\u4e8b\u4ef6\u9020\u6210\u670d\u52d9\u4e2d\u65b7\u7684\u6a5f\u7387\u3002<\/p>\n<h2><strong>\u90e8\u7f72 BGP \u591a\u91cd\u9023\u7dda\u7684\u57fa\u672c\u689d\u4ef6<\/strong><\/h2>\n<p>\u8981\u5efa\u7acb\u591a\u91cd\u9023\u7dda\u7db2\u8def\u67b6\u69cb\uff0c\u901a\u5e38\u9700\u8981\u53d6\u5f97 Autonomous System Number\uff0c\u4ee5\u53ca\u4e00\u6bb5\u53ef\u4ee5\u5411\u591a\u500b\u4f9b\u61c9\u5546\u5ba3\u544a\u7684 IP \u4f4d\u5740\u5340\u6bb5\u3002<\/p>\n<p>\u908a\u754c\u8def\u7531\u5668\u9700\u8981\u8207\u5404\u500b\u4e0a\u6e38\u96fb\u4fe1\u5546\u5efa\u7acb BGP 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