{"id":477165,"date":"2023-08-09T09:08:44","date_gmt":"2023-08-09T09:08:44","guid":{"rendered":""},"modified":"2023-09-05T11:14:13","modified_gmt":"2023-09-05T11:14:13","slug":"exterior-gateway-protocol","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/exterior-gateway-protocol\/","title":{"rendered":"\u5916\u90e8\u7f51\u5173\u534f\u8bae"},"content":{"rendered":"<p>\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u6982\u8ff0\u3001\u5176\u8d77\u6e90\u3001\u5185\u90e8\u5de5\u4f5c\u539f\u7406\u53ca\u5176\u5728\u4ee3\u7406\u670d\u52a1\u5668\u9886\u57df\u7684\u5730\u4f4d\u3002<\/p>\n<h2>\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u5386\u53f2\u548c\u8d77\u6e90<\/h2>\n<p>\u6b63\u5982\u6211\u4eec\u4eca\u5929\u6240\u77e5\uff0c\u5916\u90e8\u7f51\u5173\u534f\u8bae (EGP) \u9996\u6b21\u51fa\u73b0\u4e8e 20 \u4e16\u7eaa\u672b\u3002\u968f\u7740 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u4e92\u8054\u7f51\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u51fa\u73b0\u4e86\u5bf9\u5728\u81ea\u6cbb\u7cfb\u7edf (AS) \u4e4b\u95f4\u4ea4\u6362\u8def\u7531\u8868\u4fe1\u606f\u7684\u6807\u51c6\u5316\u65b9\u6cd5\u7684\u9700\u6c42\uff0c\u81ea\u6cbb\u7cfb\u7edf\u662f\u7531\u5355\u4e2a\u4f01\u4e1a\u7ba1\u7406\u7684\u7f51\u7edc\u3002<\/p>\n<p>\u9996\u6b21\u63d0\u53ca EGP \u662f\u5728 1982 \u5e74\uff0c\u5728\u4e00\u4efd\u540d\u4e3a\u201cEGP \u2013 \u5916\u90e8\u7f51\u5173\u534f\u8bae\u201d\u7684\u6587\u6863\u4e2d\uff0c\u8be5\u6587\u6863\u4ee5 RFC 827 \u7684\u5f62\u5f0f\u53d1\u5e03\u3002RFC\uff08\u5373\u5f81\u6c42\u610f\u89c1\uff09\u662f\u4e00\u7cfb\u5217\u5907\u5fd8\u5f55\uff0c\u8ba8\u8bba\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u8bb8\u591a\u65b9\u9762\uff0c\u5305\u62ec\u534f\u8bae\u3001\u8fc7\u7a0b\u3001\u7a0b\u5e8f\u548c\u6982\u5ff5\u3002\u8be5 RFC \u662f\u7531 Bolt Beranek \u548c Newman Inc. \u7684 Eric C. Rosen \u7f16\u5199\u7684\uff0c\u8be5\u516c\u53f8\u5728\u4e92\u8054\u7f51\u7684\u53d1\u5c55\u4e2d\u53d1\u6325\u4e86\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<h2>\u6269\u5c55\u4e3b\u9898\uff1a\u5916\u90e8\u7f51\u5173\u534f\u8bae<\/h2>\n<p>EGP \u662f\u4e00\u79cd\u8ddd\u79bb\u77e2\u91cf\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u4e92\u8054\u7f51\u4e0a\u7684\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002\u81ea\u6cbb\u7cfb\u7edf (AS) \u672c\u8d28\u4e0a\u662f\u53d7\u4e00\u4e2a\u5b9e\u4f53\uff08\u4f8b\u5982 ISP \u6216\u5927\u578b\u4f01\u4e1a\u7ec4\u7ec7\uff09\u63a7\u5236\u7684\u7f51\u7edc\u6216\u7f51\u7edc\u96c6\u5408\u3002<\/p>\n<p>EGP \u662f\u4e3a\u5728\u5047\u8bbe\u6bcf\u4e2a\u7f51\u5173\uff08\u8def\u7531\u5668\uff09\u90fd\u4e0e\u6bcf\u4e2a AS \u76f4\u63a5\u8fde\u63a5\u7684\u73af\u5883\u4e2d\u4f7f\u7528\u800c\u521b\u5efa\u7684\u3002\u6bcf\u4e2a\u652f\u6301 EGP \u7684\u8def\u7531\u5668\u4e0e\u5176\u5bf9\u7b49\u8def\u7531\u5668\u8fdb\u884c\u901a\u4fe1\uff0c\u4ee5\u4ea4\u6362\u7f51\u7edc\u53ef\u8fbe\u6027\u4fe1\u606f\uff0c\u4ece\u800c\u4f7f\u8def\u7531\u5668\u80fd\u591f\u5c31\u8f6c\u53d1\u6570\u636e\u5305\u7684\u6700\u4f73\u8def\u5f84\u505a\u51fa\u660e\u667a\u7684\u51b3\u7b56\u3002<\/p>\n<p>\u7136\u800c\uff0cEGP \u5e76\u4e0d\u662f\u4e3a\u4e86\u6839\u636e\u8ddd\u79bb\u6216\u6210\u672c\u7b49\u6307\u6807\u6765\u786e\u5b9a\u6570\u636e\u4f20\u8f93\u7684\u6700\u4f73\u8def\u5f84\u3002\u76f8\u53cd\uff0c\u5b83\u53ea\u662f\u4f20\u64ad\u8def\u7531\u4fe1\u606f\u5e76\u4f9d\u8d56\u5185\u90e8\u7f51\u5173\u534f\u8bae (IGP)\uff08\u4f8b\u5982 RIP \u6216 OSPF\uff09\u6765\u9009\u62e9\u6700\u4f73\u8def\u5f84\u3002<\/p>\n<h2>\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u5185\u90e8\u7ed3\u6784\u548c\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>EGP \u8fd0\u884c\u5728\u8def\u7531\u5668\u4e4b\u95f4\u4ea4\u6362\u7684\u4e00\u7ec4\u7b80\u5355\u547d\u4ee4\u548c\u6d88\u606f\u4e0a\u3002\u8be5\u534f\u8bae\u5b9a\u4e49\u4e86\u4e94\u79cd\u7c7b\u578b\u7684\u6d88\u606f\uff1aHello\/I-Heard-You (IHU)\u3001\u8bf7\u6c42\u3001\u66f4\u65b0\u3001\u54cd\u5e94\u548c\u8f6e\u8be2\u3002<\/p>\n<p>Hello \u548cIHU \u6d88\u606f\u7528\u4e8e\u5efa\u7acb\u548c\u7ef4\u62a4\u8def\u7531\u5668\u4e4b\u95f4\u7684\u90bb\u5c45\u5173\u7cfb\u3002\u8bf7\u6c42\u548c\u66f4\u65b0\u6d88\u606f\u7528\u4e8e\u8bf7\u6c42\u548c\u53d1\u9001\u8def\u7531\u4fe1\u606f\uff0c\u800c\u54cd\u5e94\u548c\u8f6e\u8be2\u6d88\u606f\u7528\u4e8e\u786e\u8ba4\u66f4\u65b0\u7684\u63a5\u6536\u5e76\u8bf7\u6c42\u66f4\u65b0\u3002<\/p>\n<p>EGP\u7684\u5de5\u4f5c\u539f\u7406\u662f\u5728\u6838\u5fc3\u7f51\u5173\uff08\u8def\u7531\u5668\uff09\u548c\u8fb9\u7f18\u7f51\u5173\u4e4b\u95f4\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u3002\u4e00\u65e6\u5f62\u6210\u8fd9\u79cd\u5173\u7cfb\uff0c\u8fb9\u7f18\u7f51\u5173\u5c31\u4f1a\u5411\u6838\u5fc3\u7f51\u5173\u53d1\u9001 EGP \u8f6e\u8be2\u6d88\u606f\uff0c\u6838\u5fc3\u7f51\u5173\u4ee5\u5305\u542b\u53ef\u901a\u8fc7\u6838\u5fc3\u7f51\u5173\u5230\u8fbe\u7684\u7f51\u7edc\u5217\u8868\u7684 EGP \u66f4\u65b0\u6d88\u606f\u8fdb\u884c\u54cd\u5e94\u3002\u7136\u540e\uff0c\u8fb9\u7f18\u7f51\u5173\u53ef\u4ee5\u76f8\u5e94\u5730\u66f4\u65b0\u5176\u8def\u7531\u8868\u3002<\/p>\n<h2>\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u4e3b\u8981\u7279\u6027<\/h2>\n<p>EGP \u7684\u4e3b\u8981\u7279\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u90bb\u5c45\u83b7\u53d6\uff1a<\/strong> \u8fd9\u4e2a\u8fc7\u7a0b\u6d89\u53ca\u8def\u7531\u5668\u4e4b\u95f4\u90bb\u5c45\u5173\u7cfb\u7684\u5efa\u7acb\u548c\u7ef4\u62a4\u3002<\/li>\n<li><strong>\u53ef\u9760\u7684\u8fd0\u8f93\uff1a<\/strong> EGP \u4f7f\u7528\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae (UDP) \u8fdb\u884c\u4f20\u8f93\uff0c\u5e76\u5305\u542b\u53ef\u9760\u6d88\u606f\u4ea4\u6362\u7684\u673a\u5236\u3002<\/li>\n<li><strong>\u7f51\u7edc\u53ef\u8fbe\u6027\u4fe1\u606f\u4ea4\u6362\uff1a<\/strong> EGP \u63d0\u4f9b\u4e86\u5728\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e2d\u7684\u8def\u7531\u5668\u4e4b\u95f4\u4ea4\u6362\u6709\u5173\u7f51\u7edc\u53ef\u8fbe\u6027\u7684\u4fe1\u606f\u7684\u80fd\u529b\u3002<\/li>\n<li><strong>\u8f6e\u8be2\u673a\u5236\uff1a<\/strong> EGP \u4f7f\u7528\u8f6e\u8be2\u673a\u5236\uff08\u4e00\u79cd\u8bf7\u6c42\u8def\u7531\u66f4\u65b0\u7684\u5f62\u5f0f\uff09\u6765\u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2>\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u7c7b\u578b<\/h2>\n<p>\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u51fa\u73b0\u4e86\u5404\u79cd\u7248\u672c\u7684\u5916\u90e8\u7f51\u5173\u534f\u8bae\u6765\u6ee1\u8db3\u4e0d\u540c\u7684\u7ec4\u7f51\u9700\u6c42\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u534f\u8bae<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>EGP\uff08\u5916\u90e8\u7f51\u5173\u534f\u8bae\uff09<\/td>\n<td>\u539f\u59cb\u5916\u90e8\u7f51\u5173\u534f\u8bae\uff0c\u5982\u4e0a\u6240\u8ff0\u3002<\/td>\n<\/tr>\n<tr>\n<td>BGP\uff08\u8fb9\u754c\u7f51\u5173\u534f\u8bae\uff09<\/td>\n<td>BGP \u662f\u5f53\u4eca\u4f7f\u7528\u6700\u5e7f\u6cdb\u7684\u5916\u90e8\u7f51\u5173\u534f\u8bae\uff0c\u6bd4 EGP \u66f4\u5148\u8fdb\u3001\u66f4\u7075\u6d3b\u3002\u5b83\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u73af\u8def\u9884\u9632\u3001\u7b56\u7565\u63a7\u5236\u548c\u53ef\u6269\u5c55\u6027\u673a\u5236\u3002<\/td>\n<\/tr>\n<tr>\n<td>IDRP\uff08\u57df\u95f4\u8def\u7531\u534f\u8bae\uff09<\/td>\n<td>\u4e00\u79cd ISO \u6807\u51c6\u5916\u90e8\u7f51\u5173\u534f\u8bae\uff0c\u652f\u6301\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u7684\u8def\u7531\u3002\u7136\u800c\uff0c\u5b83\u5728\u5b9e\u8df5\u4e2d\u5e76\u672a\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4f7f\u7528 EGP \u7684\u65b9\u6cd5\u548c\u76f8\u5173\u6311\u6218<\/h2>\n<p>EGP \u4e3b\u8981\u7528\u4e8e\u5c06\u81ea\u6cbb\u7cfb\u7edf\u4e0e\u4e92\u8054\u7f51\u9aa8\u5e72\u7f51\u8fde\u63a5\u8d77\u6765\u3002\u7136\u800c\uff0c\u8be5\u534f\u8bae\u5e76\u975e\u6ca1\u6709\u6311\u6218\uff1a<\/p>\n<ul>\n<li><strong>\u6709\u9650\u7684\u8def\u7531\u6307\u6807\uff1a<\/strong> EGP \u5728\u51b3\u5b9a\u6570\u636e\u5305\u8f6c\u53d1\u7684\u6700\u4f73\u8def\u7531\u65f6\u4e0d\u8003\u8651\u8def\u5f84\u7684\u6307\u6807\uff0c\u4f8b\u5982\u6210\u672c\u3001\u5e26\u5bbd\u6216\u62e5\u585e\u3002<\/li>\n<li><strong>\u65e0\u73af\u8def\u9884\u9632\u673a\u5236\uff1a<\/strong> EGP \u7f3a\u4e4f\u4efb\u4f55\u56fa\u6709\u7684\u73af\u8def\u9884\u9632\u673a\u5236\uff0c\u56e0\u6b64\u5f88\u5bb9\u6613\u53d7\u5230\u8def\u7531\u73af\u8def\u7684\u5f71\u54cd\u3002<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027\u95ee\u9898\uff1a<\/strong> \u968f\u7740\u4e92\u8054\u7f51\u4e0a\u81ea\u6cbb\u7cfb\u7edf\u6570\u91cf\u7684\u589e\u957f\uff0cEGP \u9762\u4e34\u53ef\u6269\u5c55\u6027\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 BGP \u7b49\u9ad8\u7ea7\u534f\u8bae\u6765\u89e3\u51b3\u3002 BGP \u63d0\u4f9b\u73af\u8def\u9884\u9632\u673a\u5236\uff0c\u8003\u8651\u8def\u5f84\u5c5e\u6027\u8fdb\u884c\u8def\u7531\u9009\u62e9\uff0c\u5e76\u652f\u6301 CIDR\uff08\u65e0\u7c7b\u57df\u95f4\u8def\u7531\uff09\uff0c\u4ece\u800c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528 IP \u5730\u5740\u7a7a\u95f4\u548c\u66f4\u597d\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<h2>\u4e0e\u7c7b\u4f3c\u672f\u8bed\u7684\u6bd4\u8f83<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u6bd4\u8f83<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>IGP\uff08\u5185\u90e8\u7f51\u5173\u534f\u8bae\uff09<\/td>\n<td>\u7528\u4e8e\u5728\u81ea\u6cbb\u7cfb\u7edf\u5185\u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002<\/td>\n<td>\u4e0e EGP \u4e0d\u540c\uff0cIGP \u5728\u81ea\u6cbb\u7cfb\u7edf\u5185\u8fd0\u884c\uff0c\u5e76\u8003\u8651\u8def\u7531\u6307\u6807\u6765\u9009\u62e9\u6700\u4f73\u8def\u5f84\u3002\u793a\u4f8b\u5305\u62ec OSPF \u548c RIP\u3002<\/td>\n<\/tr>\n<tr>\n<td>BGP\uff08\u8fb9\u754c\u7f51\u5173\u534f\u8bae\uff09<\/td>\n<td>EGP \u7684\u4e00\u79cd\uff0c\u7528\u4e8e\u5728\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002<\/td>\n<td>BGP \u6bd4\u539f\u6765\u7684 EGP \u66f4\u5148\u8fdb\uff0c\u662f\u5f53\u4eca AS \u95f4\u8def\u7531\u7684\u6807\u51c6\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e EGP \u76f8\u5173\u7684\u524d\u666f\u548c\u672a\u6765\u6280\u672f<\/h2>\n<p>\u5c3d\u7ba1 EGP \u5df2\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u88ab BGP \u53d6\u4ee3\uff0c\u4f46\u5176\u521b\u5efa\u80cc\u540e\u7684\u539f\u7406\u4ecd\u7136\u5f71\u54cd\u7740\u4e92\u8054\u7f51\u8def\u7531\u3002\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u672a\u6765\u589e\u5f3a\u53ef\u80fd\u5305\u62ec\u66f4\u5f3a\u5927\u7684\u5b89\u5168\u529f\u80fd\u3001\u66f4\u597d\u7684 IPv6 \u652f\u6301\u4ee5\u53ca\u57fa\u4e8e\u7b56\u7565\u7684\u8def\u7531\u7684\u6539\u8fdb\u3002<\/p>\n<h2>\u4ee3\u7406\u670d\u52a1\u5668\u548c\u5916\u90e8\u7f51\u5173\u534f\u8bae<\/h2>\n<p>\u867d\u7136\u4ee3\u7406\u670d\u52a1\u5668\u672c\u8eab\u4e0d\u76f4\u63a5\u4f7f\u7528 EGP \u6216\u5176\u4ed6\u8def\u7531\u534f\u8bae\uff0c\u4f46\u5b83\u4eec\u7684\u529f\u80fd\u4e0e\u8fd9\u4e9b\u534f\u8bae\u7684\u9ad8\u6548\u8fd0\u884c\u5bc6\u5207\u76f8\u5173\u3002\u4ee3\u7406\u670d\u52a1\u5668\uff08\u5982 OneProxy \u63d0\u4f9b\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff09\u5145\u5f53\u5ba2\u6237\u7aef\u548c\u66f4\u5e7f\u6cdb\u7684\u4e92\u8054\u7f51\u4e4b\u95f4\u7684\u4e2d\u4ecb\u3002\u5b83\u4eec\u4f9d\u9760\u4e92\u8054\u7f51\u8def\u7531\u534f\u8bae\uff08\u5305\u62ec BGP\uff09\u7684\u6b63\u5e38\u8fd0\u884c\u6765\u786e\u4fdd\u5ba2\u6237\u7aef\u8bf7\u6c42\u53d1\u9001\u5230\u6b63\u786e\u7684\u670d\u52a1\u5668\u5e76\u53ca\u65f6\u8fd4\u56de\u54cd\u5e94\u3002<\/p>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u80fd\u662f\u4f7f\u7528 BGP \u6216\u5176\u4ed6 EGP \u7684\u7f51\u7edc\u7684\u4e00\u90e8\u5206\u3002\u4f8b\u5982\uff0c\u5927\u578b\u4ee3\u7406\u670d\u52a1\u5668\u63d0\u4f9b\u5546\u53ef\u80fd\u4f7f\u7528 BGP \u6765\u7ba1\u7406\u5176\u7f51\u7edc\u4e0e\u5176\u4ed6 ISP \u4e4b\u95f4\u7684\u8def\u7531\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u5916\u90e8\u7f51\u5173\u534f\u8bae\u7684\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u8bbf\u95ee\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc827\" target=\"_new\" rel=\"noopener nofollow\">RFC 827 \u2013 EGP \u89c4\u8303<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4271\" target=\"_new\" rel=\"noopener nofollow\">RFC 4271 \u2013 BGP-4 \u89c4\u8303<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/border-gateway-protocol-bgp\/11761-33.html\" target=\"_new\" rel=\"noopener nofollow\">Cisco \u7684\u8def\u7531\u534f\u8bae\u6982\u8ff0<\/a><\/li>\n<\/ul>\n<p>\u65e0\u8bba\u60a8\u662f\u5bf9\u4e92\u8054\u7f51\u8def\u7531\u7684\u5386\u53f2\u57fa\u7840\u611f\u5174\u8da3\uff0c\u8fd8\u662f\u5e0c\u671b\u4e86\u89e3\u60a8\u6700\u559c\u6b22\u7684\u4ee3\u7406\u670d\u52a1\u80cc\u540e\u7684\u673a\u5236\uff0c\u4e86\u89e3\u5916\u90e8\u7f51\u5173\u534f\u8bae\u90fd\u662f\u6574\u4e2a\u65c5\u7a0b\u4e2d\u5f88\u6709\u4ef7\u503c\u7684\u4e00\u90e8\u5206\u3002<\/p>","protected":false},"featured_media":477166,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477165","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Exterior Gateway Protocol: The Backbone of Internet Routing<\/mark>","faq_items":[{"question":"What is the Exterior Gateway Protocol (EGP)?","answer":"<p>Exterior Gateway Protocol (EGP) is a distance-vector protocol used to exchange routing information between different autonomous systems on the internet. An autonomous system is a network or a collection of networks under the control of one entity, like an ISP or a large corporate organization. EGP simply propagates routing information and relies on interior gateway protocols (IGP) to select the optimal path.<\/p>"},{"question":"When was the Exterior Gateway Protocol first mentioned?","answer":"<p>The first mention of the Exterior Gateway Protocol was in 1982, in a document titled \"EGP \u2013 Exterior Gateway Protocol,\" published as RFC 827.<\/p>"},{"question":"How does the Exterior Gateway Protocol work?","answer":"<p>EGP works by establishing a neighbor relationship between a core gateway (router) and an edge gateway. Once this relationship is formed, the edge gateway sends an EGP Poll message to the core gateway, which responds with an EGP Update message that contains a list of networks that can be reached via the core gateway. The edge gateway can then update its routing table accordingly.<\/p>"},{"question":"What are the key features of the Exterior Gateway Protocol?","answer":"<p>The key features of EGP include Neighbor Acquisition, Reliable Transport, Network Reachability Information Exchange, and a Polling Mechanism.<\/p>"},{"question":"What types of Exterior Gateway Protocols exist?","answer":"<p>The different types of exterior gateway protocols include the original EGP, the Border Gateway Protocol (BGP), and the Inter-Domain Routing Protocol (IDRP).<\/p>"},{"question":"What are the challenges associated with the use of the Exterior Gateway Protocol?","answer":"<p>Some challenges associated with EGP include Limited Routing Metrics, absence of Loop Prevention Mechanism, and Scalability Issues.<\/p>"},{"question":"How are proxy servers related to the Exterior Gateway Protocol?","answer":"<p>While proxy servers themselves do not directly use EGP or other routing protocols, their functionality is closely tied to the efficient operation of these protocols. Proxy servers serve as intermediaries between clients and the wider internet. They rely on the proper functioning of internet routing protocols, including BGP, to ensure that client requests are sent to the right servers and responses returned in a timely manner. In some cases, proxy servers may be part of networks that utilize BGP or other EGPs.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477165\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/477166"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=477165"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}