{"id":477724,"date":"2023-08-09T09:19:17","date_gmt":"2023-08-09T09:19:17","guid":{"rendered":""},"modified":"2023-09-05T11:15:17","modified_gmt":"2023-09-05T11:15:17","slug":"is-is","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/is-is\/","title":{"rendered":"\u4f0a\u65af\u5170\u56fd"},"content":{"rendered":"<p>IS-IS\uff0c\u5373\u4e2d\u95f4\u7cfb\u7edf\u5230\u4e2d\u95f4\u7cfb\u7edf\uff0c\u662f\u4e00\u79cd\u94fe\u8def\u72b6\u6001\u8def\u7531\u534f\u8bae\uff0c\u7f51\u7edc\u8bbe\u5907\uff08\u8def\u7531\u5668\uff09\u4f7f\u7528\u5b83\u6765\u786e\u5b9a\u8f6c\u53d1\u6570\u636e\u5305\u7684\u6700\u4f73\u65b9\u5f0f\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u5927\u578b\u590d\u6742\u7684\u7f51\u7edc\u73af\u5883\uff0c\u5e76\u5728 OSI\uff08\u5f00\u653e\u7cfb\u7edf\u4e92\u8fde\uff09\u6a21\u578b\u4e2d\u8fdb\u884c\u6807\u51c6\u5316\u3002<\/p>\n<h2>IS-IS\u7684\u8d77\u6e90\u548c\u9996\u6b21\u63d0\u53ca\u7684\u5386\u53f2<\/h2>\n<p>IS-IS \u6700\u521d\u5728 ISO 10589 \u4e2d\u5b9a\u4e49\u4e3a OSI \u6a21\u578b\u7684\u4e00\u90e8\u5206\u3002\u5b83\u8d77\u6e90\u4e8e 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u672b\uff0c\u5f53\u65f6\u5927\u89c4\u6a21\u7f51\u7edc\u5bf9\u5065\u58ee\u8def\u7531\u534f\u8bae\u7684\u9700\u6c42\u53d8\u5f97\u660e\u663e\u3002 IS-IS \u65e8\u5728\u6210\u4e3a\u8def\u7531\u4fe1\u606f\u534f\u8bae (RIP) \u7b49\u65e9\u671f\u534f\u8bae\u7684\u66f4\u5177\u53ef\u6269\u5c55\u6027\u7684\u66ff\u4ee3\u65b9\u6848\uff0c\u5e76\u4e8e 1990 \u5e74\u901a\u8fc7 RFC 1195 \u9002\u5e94 IP \u73af\u5883\u3002<\/p>\n<h2>IS-IS\u8be6\u7ec6\u4fe1\u606f\uff1a\u6269\u5c55IS-IS\u4e3b\u9898<\/h2>\n<p>IS-IS \u8fd0\u884c\u5728 OSI \u6a21\u578b\u7684\u7b2c 2 \u5c42\uff08\u6570\u636e\u94fe\u8def\u5c42\uff09\uff0c\u8fd9\u4f7f\u5176\u80fd\u591f\u8def\u7531\u4e0d\u540c\u7684\u7f51\u7edc\u5c42\u534f\u8bae\u3002\u5b83\u4f7f\u7528\u94fe\u8def\u72b6\u6001\u7b97\u6cd5\u6765\u8ba1\u7b97\u6570\u636e\u5305\u8f6c\u53d1\u7684\u6700\u4f73\u8def\u5f84\uff0c\u5e76\u4e14\u53ef\u4ee5\u652f\u6301 IPv4 \u548c IPv6\u3002<\/p>\n<h3>IS-IS \u7ec4\u4ef6<\/h3>\n<ul>\n<li><strong>\u8282\u70b9<\/strong>\uff1a\u5206\u4e3a\u4e2d\u95f4\u7cfb\u7edf\uff08IS\uff09\u548c\u7ec8\u7aef\u7cfb\u7edf\uff08ES\uff09\u3002<\/li>\n<li><strong>\u94fe\u8def\u72b6\u6001\u6570\u636e\u5305 (LSP)<\/strong>\uff1a\u7528\u4e8e\u5171\u4eab\u6709\u5173\u7f51\u7edc\u62d3\u6251\u7684\u4fe1\u606f\u3002<\/li>\n<li><strong>\u9886\u57df<\/strong>\uff1a\u7f51\u7edc\u5185\u6709\u5229\u4e8e\u6269\u5c55\u7684\u5206\u5c42\u540d\u79f0\u3002<\/li>\n<li><strong>\u7ea7\u522b<\/strong>\uff1a\u4e24\u4e2a\u5c42\u7ea7 - 1 \u7ea7\uff08\u533a\u57df\u5185\uff09\u548c 2 \u7ea7\uff08\u533a\u57df\u95f4\uff09\u3002<\/li>\n<\/ul>\n<h3>\u534f\u8bae\u64cd\u4f5c<\/h3>\n<p>IS-IS \u8def\u7531\u5668\u53d1\u73b0\u90bb\u5c45\u3001\u4ea4\u6362\u4fe1\u606f\u5e76\u4f7f\u7528 Dijkstra \u7b97\u6cd5\u8ba1\u7b97\u5230\u8fbe\u6240\u6709\u7f51\u7edc\u76ee\u7684\u5730\u7684\u6700\u77ed\u8def\u5f84\u3002<\/p>\n<h2>IS-IS\u7684\u5185\u90e8\u7ed3\u6784\uff1aIS-IS\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>IS-IS \u7684\u64cd\u4f5c\u53ef\u4ee5\u901a\u8fc7\u5176\u4e24\u4e2a\u5c42\u6b21\u7ed3\u6784\u7ea7\u522b\u548c\u5404\u79cd\u6d88\u606f\u7c7b\u578b\u6765\u7406\u89e3\uff1a<\/p>\n<ol>\n<li><strong>\u90bb\u5c45\u53d1\u73b0<\/strong>\uff1a\u5229\u7528Hello\u62a5\u6587\u53d1\u73b0\u548c\u7ef4\u62a4\u90bb\u5c45\u5173\u7cfb\u3002<\/li>\n<li><strong>\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93\uff08LSDB\uff09\u6784\u5efa<\/strong>\uff1a\u4f7f\u7528\u94fe\u8def\u72b6\u6001\u6570\u636e\u5305 (LSP) \u521b\u5efa\u548c\u7ef4\u62a4\u6570\u636e\u5e93\u3002<\/li>\n<li><strong>\u6700\u77ed\u8def\u5f84\u4f18\u5148 (SPF) \u8ba1\u7b97<\/strong>\uff1a\u5229\u7528Dijkstra\u7b97\u6cd5\u8ba1\u7b97\u6700\u4f18\u8def\u5f84\u3002<\/li>\n<\/ol>\n<h3>\u6d88\u606f\u7c7b\u578b<\/h3>\n<ul>\n<li><strong>\u4f60\u597d\u6570\u636e\u5305<\/strong>\uff1a\u7528\u4e8e\u90bb\u5c45\u53d1\u73b0\u548c\u5173\u7cfb\u7ef4\u62a4\u3002<\/li>\n<li><strong>LSP<\/strong>\uff1a\u5171\u4eab\u62d3\u6251\u4fe1\u606f\u3002<\/li>\n<li><strong>\u5b8c\u6574\u5e8f\u5217\u53f7\u6570\u636e\u5305 (CSNP)<\/strong> \u548c <strong>\u90e8\u5206\u5e8f\u5217\u53f7\u6570\u636e\u5305 (PSNP)<\/strong>\uff1a\u7528\u4e8e\u6570\u636e\u5e93\u540c\u6b65\u3002<\/li>\n<\/ul>\n<h2>IS-IS\u5173\u952e\u7279\u5f81\u5206\u6790<\/h2>\n<ul>\n<li><strong>\u53ef\u6269\u5c55\u6027<\/strong>\uff1a\u7531\u4e8e\u5206\u5c42\u7ed3\u6784\uff0c\u9002\u5408\u5927\u578b\u7f51\u7edc\u3002<\/li>\n<li><strong>\u7075\u6d3b\u6027<\/strong>\uff1a\u652f\u6301\u591a\u79cd\u7f51\u7edc\u5c42\u534f\u8bae\u3002<\/li>\n<li><strong>\u9c81\u68d2\u6027<\/strong>\uff1a\u6536\u655b\u901f\u5ea6\u5feb\uff0c\u7a33\u5b9a\u6027\u597d\u3002<\/li>\n<li><strong>\u914d\u7f6e\u7b80\u5355<\/strong>\uff1a\u914d\u7f6e\u590d\u6742\u6027\u6700\u5c0f\u3002<\/li>\n<\/ul>\n<h2>IS-IS \u7684\u7c7b\u578b\uff1a\u4f7f\u7528\u8868\u683c\u548c\u5217\u8868<\/h2>\n<h3>\u8def\u7531\u7ea7\u522b<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u7b49\u7ea7<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1\u7ea7<\/td>\n<td>\u533a\u57df\u5185\u8def\u7531\uff08\u533a\u57df\u5185\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td>2\u7ea7<\/td>\n<td>\u533a\u57df\u95f4\uff08\u533a\u57df\u95f4\uff09\u7684\u8def\u7531\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u652f\u6301\u7684\u7f51\u7edc\u534f\u8bae<\/h3>\n<ul>\n<li>IPv4<\/li>\n<li>IPv6<\/li>\n<li>IPX\uff08\u5386\u53f2\uff09<\/li>\n<\/ul>\n<h2>IS-IS\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u4e2d\u51fa\u73b0\u7684\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<p>IS-IS \u901a\u5e38\u7528\u4e8e\u5927\u578b\u4f01\u4e1a\u548c ISP \u7f51\u7edc\u3002\u7136\u800c\uff0c\u5b83\u4e5f\u4e0d\u80fd\u5e78\u514d\u4e8e\u6311\u6218\uff1a<\/p>\n<h3>\u95ee\u9898<\/h3>\n<ul>\n<li>\u975e\u5e38\u5927\u7684\u7f51\u7edc\u7684\u590d\u6742\u6027\u3002<\/li>\n<li>\u914d\u7f6e\u9519\u8bef\u7684\u7f51\u7edc\u4e2d\u53ef\u80fd\u5b58\u5728\u8def\u7531\u73af\u8def\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u51b3\u65b9\u6848<\/h3>\n<ul>\n<li>\u9002\u5f53\u7684\u7f51\u7edc\u8bbe\u8ba1\u548c\u5206\u6bb5\u3002<\/li>\n<li>\u5b9a\u671f\u76d1\u63a7\u548c\u8bca\u65ad\u5de5\u5177\u3002<\/li>\n<\/ul>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u5176\u4ed6\u4e0e\u540c\u7c7b\u4ea7\u54c1\u7684\u6bd4\u8f83<\/h2>\n<h3>\u4e0eOSPF\u7684\u6bd4\u8f83<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u4f0a\u65af\u5170\u56fd<\/th>\n<th>\u5f00\u653e\u5f0fSPF\u534f\u8bae<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>OSI\u5c42<\/td>\n<td>\u7b2c2\u5c42<\/td>\n<td>\u7b2c3\u5c42<\/td>\n<\/tr>\n<tr>\n<td>\u534f\u8bae\u652f\u6301<\/td>\n<td>\u591a\u534f\u8bae<\/td>\n<td>IPv4\u3001IPv6<\/td>\n<\/tr>\n<tr>\n<td>\u914d\u7f6e<\/td>\n<td>\u66f4\u7b80\u5355<\/td>\n<td>\u66f4\u590d\u6742<\/td>\n<\/tr>\n<tr>\n<td>\u533a\u57df\u7c7b\u578b<\/td>\n<td>\u57fa\u672c\u5c42\u6b21\u7ed3\u6784<\/td>\n<td>\u5404\u79cd\u533a\u57df\u7c7b\u578b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e IS-IS \u76f8\u5173\u7684\u672a\u6765\u524d\u666f\u548c\u6280\u672f<\/h2>\n<p>IS-IS \u9884\u8ba1\u5c06\u7ee7\u7eed\u6210\u4e3a\u672a\u6765\u7f51\u7edc\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5e76\u5728\u4ee5\u4e0b\u65b9\u9762\u4e0d\u65ad\u6539\u8fdb\uff1a<\/p>\n<ul>\n<li><strong>\u5b89\u9632\u63aa\u65bd<\/strong>\uff1a\u8eab\u4efd\u9a8c\u8bc1\u548c\u52a0\u5bc6\u65b9\u9762\u7684\u589e\u5f3a\u3002<\/li>\n<li><strong>\u4e0eSDN\u96c6\u6210<\/strong>\uff1a\u4e0e\u8f6f\u4ef6\u5b9a\u4e49\u7f51\u7edc\u7684\u5408\u4f5c\u3002<\/li>\n<li><strong>\u652f\u6301\u65b0\u534f\u8bae<\/strong>\uff1a\u9002\u5e94\u65b0\u5174\u7f51\u7edc\u6280\u672f\u3002<\/li>\n<\/ul>\n<h2>\u4ee3\u7406\u670d\u52a1\u5668\u5982\u4f55\u4f7f\u7528\u6216\u4e0e IS-IS \u5173\u8054<\/h2>\n<p>\u5728\u67d0\u4e9b\u7f51\u7edc\u4f53\u7cfb\u7ed3\u6784\u4e2d\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u4e0e IS-IS \u4e00\u8d77\u90e8\u7f72\uff0c\u4ee5\u63d0\u4f9b\u7279\u5b9a\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u5185\u5bb9\u8fc7\u6ee4\u3001\u7f13\u5b58\u6216\u65e5\u5fd7\u8bb0\u5f55\u3002\u901a\u8fc7\u5c06\u4ee3\u7406\u670d\u52a1\u5668\u4e0e IS-IS \u8def\u7531\u96c6\u6210\uff0c\u53ef\u4ee5\u4f18\u5316\u7f51\u7edc\u6027\u80fd\uff0c\u5e76\u4e14\u53ef\u4ee5\u66f4\u4e00\u81f4\u5730\u5b9e\u65bd\u5b89\u5168\u63aa\u65bd\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.iso.org\/standard\/68959.html\" target=\"_new\" rel=\"noopener nofollow\">ISO 10589\uff1a\u4fe1\u606f\u6280\u672f \u2013 \u7535\u4fe1\u548c\u4fe1\u606f\u4ea4\u6362<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1195\" target=\"_new\" rel=\"noopener nofollow\">RFC 1195\uff1a\u4f7f\u7528 OSI IS-IS \u5728 TCP\/IP \u548c\u53cc\u73af\u5883\u4e2d\u8fdb\u884c\u8def\u7531<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/intermediate-system-to-intermediate-system-is-is\/13713-22.html\" target=\"_new\" rel=\"noopener nofollow\">\u601d\u79d1 IS-IS \u6307\u5357<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/cn\/\" target=\"_new\" rel=\"noopener\">OneProxy\u5b98\u65b9\u7f51\u7ad9<\/a><\/li>\n<\/ul>\n<p>\u8fd9\u4efd\u7efc\u5408\u6307\u5357\u662f\u4e86\u89e3\u591a\u529f\u80fd\u4e14\u5f3a\u5927\u7684\u8def\u7531\u534f\u8bae IS-IS\u3001\u5176\u5e94\u7528\u3001\u6311\u6218\u548c\u672a\u6765\u53d1\u5c55\u7684\u8d77\u70b9\u3002\u5b83\u4e0e OneProxy \u63d0\u4f9b\u7684\u4ee3\u7406\u670d\u52a1\u5668\u7684\u4ea4\u4e92\u8fdb\u4e00\u6b65\u6269\u5c55\u4e86\u5176\u5728\u73b0\u4ee3\u7f51\u7edc\u573a\u666f\u4e2d\u7684\u6f5c\u529b\u3002<\/p>","protected":false},"featured_media":477725,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477724","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Intermediate System to Intermediate System (IS-IS)<\/mark>","faq_items":[{"question":"What is IS-IS and how does it work?","answer":"<p>IS-IS, which stands for Intermediate System to Intermediate System, is a link-state routing protocol used by routers to determine the best path for forwarding data packets in large and complex network environments. It operates on Layer 2 (Data Link Layer) of the OSI model and can support both IPv4 and IPv6. IS-IS routers discover neighbors, exchange information, and use the Dijkstra algorithm to calculate the shortest path to all network destinations.<\/p>"},{"question":"How did IS-IS originate?","answer":"<p>IS-IS was initially defined in ISO 10589 as part of the OSI model in the late 1980s. It was developed to provide a more scalable alternative to earlier routing protocols like RIP. In 1990, it was adapted to IP environments with RFC 1195.<\/p>"},{"question":"What are the key features of IS-IS?","answer":"<p>IS-IS offers several important features, including scalability for large networks, flexibility in supporting multiple network layer protocols, robustness with quick convergence, and simplicity in configuration.<\/p>"},{"question":"What are the different types of IS-IS?","answer":"<p>IS-IS operates with two hierarchical levels: Level 1 for routing within an area (intra-area) and Level 2 for routing between areas (inter-area). It also supports multiple network protocols, including IPv4, IPv6, and IPX (historical).<\/p>"},{"question":"How is IS-IS compared to OSPF?","answer":"<p>While both IS-IS and OSPF are link-state routing protocols, they have some differences. IS-IS operates at Layer 2 of the OSI model, while OSPF operates at Layer 3. IS-IS supports multi-protocol environments, while OSPF primarily focuses on IPv4 and IPv6. IS-IS configuration is generally simpler compared to OSPF's more complex setup.<\/p>"},{"question":"How can proxy servers be associated with IS-IS?","answer":"<p>Proxy servers can be used alongside IS-IS in certain network architectures to enhance performance and security. By integrating proxy servers with IS-IS routing, specific functionalities like content filtering, caching, and logging can be provided, optimizing network operations.<\/p>"},{"question":"What are the future prospects of IS-IS?","answer":"<p>The future of IS-IS is promising, with continuous improvements in security measures, integration with SDN (Software-Defined Networking), and support for emerging network protocols and technologies.<\/p>"},{"question":"Where can I find more information about IS-IS?","answer":"<p>For further information about IS-IS, you can refer to the ISO standard 10589 and RFC 1195. Additionally, Cisco offers a comprehensive guide to IS-IS, and you can explore OneProxy's website for more networking solutions and resources.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477724","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\/477724\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/477725"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=477724"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}