{"id":475784,"date":"2023-08-09T07:23:51","date_gmt":"2023-08-09T07:23:51","guid":{"rendered":""},"modified":"2023-09-05T11:11:13","modified_gmt":"2023-09-05T11:11:13","slug":"access-layer","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/access-layer\/","title":{"rendered":"\u63a5\u5165\u5c42"},"content":{"rendered":"

\u63a5\u5165\u5c42\u662f\u7f51\u7edc\u67b6\u6784\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u662f\u7528\u6237\u548c\u8bbe\u5907\u63a5\u5165\u7f51\u7edc\u7684\u5165\u53e3\u70b9\uff0c\u662f\u7f51\u7edc\u8bbe\u8ba1\u4e2d\u7ba1\u7406\u7528\u6237\u5bf9\u5404\u79cd\u7f51\u7edc\u670d\u52a1\u548c\u8d44\u6e90\u7684\u8bbf\u95ee\u7684\u5173\u952e\u5143\u7d20\u3002<\/p>\n

\u63a5\u5165\u5c42\u7684\u51fa\u73b0\u548c\u6f14\u8fdb<\/h2>\n

\u63a5\u5165\u5c42\u7684\u6982\u5ff5\u968f\u7740\u7f51\u7edc\u67b6\u6784\u7684\u53d1\u5c55\u800c\u624e\u6839\u3002\u5728 20 \u4e16\u7eaa 70 \u5e74\u4ee3\u672b\u548c 80 \u5e74\u4ee3\u521d\uff0c\u968f\u7740\u7f51\u7edc\u6280\u672f\u5f00\u59cb\u53d1\u5c55\uff0c\u5bf9\u6709\u7ec4\u7ec7\u7684\u5206\u5c42\u65b9\u6cd5\u7684\u9700\u6c42\u53d8\u5f97\u663e\u800c\u6613\u89c1\u3002\u5176\u57fa\u7840\u6846\u67b6\u662f OSI\uff08\u5f00\u653e\u7cfb\u7edf\u4e92\u8fde\uff09\u6a21\u578b\uff0c\u7531\u56fd\u9645\u6807\u51c6\u5316\u7ec4\u7ec7 (ISO) \u4e8e 1984 \u5e74\u63a8\u51fa\u3002OSI \u6a21\u578b\u7684\u8f83\u4f4e\u5c42\uff0c\u5c24\u5176\u662f\u7269\u7406\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c42\uff0c\u4e3a\u6211\u4eec\u73b0\u5728\u6240\u7406\u89e3\u7684\u63a5\u5165\u5c42\u5960\u5b9a\u4e86\u57fa\u7840\u3002<\/p>\n

20 \u4e16\u7eaa 90 \u5e74\u4ee3\uff0c\u601d\u79d1\u7684\u4e09\u5c42\u5206\u5c42\u6a21\u578b\u6269\u5c55\u4e86\u8fd9\u4e00\u6982\u5ff5\uff0c\u9664\u4e86\u5206\u5e03\u5c42\u548c\u6838\u5fc3\u5c42\u4e4b\u5916\uff0c\u8fd8\u5f15\u5165\u4e86\u660e\u786e\u7684\u63a5\u5165\u5c42\u3002\u8be5\u6a21\u578b\u901a\u8fc7\u63d0\u4f9b\u53ef\u6269\u5c55\u3001\u53ef\u9760\u4e14\u7ecf\u6d4e\u9ad8\u6548\u7684\u5206\u5c42\u4e92\u8054\u7f51\u7edc\u7b80\u5316\u4e86\u7f51\u7edc\u3002<\/p>\n

\u6df1\u5165\u63a2\u7a76\u8bbf\u95ee\u5c42<\/h2>\n

\u63a5\u5165\u5c42\uff0c\u4e5f\u79f0\u4e3a\u7f51\u7edc\u8fb9\u7f18\uff0c\u662f\u7f51\u7edc\u5206\u5c42\u8bbe\u8ba1\u4e2d\u7684\u6700\u5916\u5c42\u3002\u5b83\u662f\u8ba1\u7b97\u673a\u3001\u7535\u8bdd\u548c\u7269\u8054\u7f51\u8bbe\u5907\u7b49\u7ec8\u7aef\u8bbe\u5907\u8fde\u63a5\u5230\u7f51\u7edc\u7684\u5730\u65b9\u3002\u5b83\u8fd8\u8fde\u63a5\u5c40\u57df\u7f51 (LAN) \u4e2d\u66f4\u9760\u8fd1\u6700\u7ec8\u7528\u6237\u7684\u4ea4\u6362\u673a\u3002<\/p>\n

\u63a5\u5165\u5c42\u7684\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n

    \n
  1. \u4e3a\u7528\u6237\u63d0\u4f9b\u7f51\u7edc\u8bbf\u95ee\u3002<\/li>\n
  2. \u786e\u4fdd\u6bcf\u4e2a\u8bbe\u5907\u90fd\u6709\u8db3\u591f\u7684\u8d44\u6e90\u6765\u6ee1\u8db3\u5176\u7f51\u7edc\u8981\u6c42\u3002<\/li>\n
  3. \u5b9e\u65bd\u7f51\u7edc\u5b89\u5168\u3001\u6d41\u91cf\u8fc7\u6ee4\u548c QoS\uff08\u670d\u52a1\u8d28\u91cf\uff09\u7b56\u7565\u3002<\/li>\n
  4. \u5904\u7406\u9519\u8bef\u68c0\u6d4b\u548c\u6570\u636e\u5305\u91cd\u65b0\u4f20\u8f93\u3002<\/li>\n<\/ol>\n

    \u8bbf\u95ee\u5c42\u7684\u5185\u90e8\u5de5\u4f5c\u539f\u7406<\/h2>\n

    \u5728\u63a5\u5165\u5c42\uff0c\u5404\u79cd\u7f51\u7edc\u8bbe\u5907\uff08\u5982\u4ea4\u6362\u673a\u548c\u8def\u7531\u5668\uff09\u5145\u5f53\u6700\u7ec8\u7528\u6237\u548c\u7f51\u7edc\u4e4b\u95f4\u7684\u6865\u6881\u3002\u5f53\u8bbe\u5907\u5bfb\u6c42\u8fde\u63a5\u65f6\uff0c\u63a5\u5165\u5c42\u4f1a\u7ba1\u7406\u5176\u8fde\u63a5\uff0c\u786e\u4fdd\u91c7\u53d6\u9002\u5f53\u7684\u5b89\u5168\u63aa\u65bd\u5e76\u786e\u4fdd\u8bbe\u5907\u83b7\u5f97 IP \u5730\u5740\u3002\u5b83\u8fd8\u5904\u7406\u6570\u636e\u5305\u7684\u4f20\u8f93\u548c\u63a5\u6536\u3002<\/p>\n

    \u63a5\u5165\u5c42\u7684\u4ea4\u6362\u673a\u901a\u5e38\u662f\u4f7f\u7528 MAC \u5730\u5740\u8f6c\u53d1\u6d41\u91cf\u7684\u7b2c 2 \u5c42\u8bbe\u5907\u3002\u5b83\u4eec\u53ef\u4ee5\u63d0\u4f9b VLAN \u5206\u6bb5\u3001\u94fe\u8def\u805a\u5408\u548c PoE\uff08\u4ee5\u592a\u7f51\u4f9b\u7535\uff09\u7b49\u529f\u80fd\u3002<\/p>\n

    \u63a5\u5165\u5c42\u7684\u4e3b\u8981\u7279\u6027<\/h2>\n

    \u8bbf\u95ee\u5c42\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u7279\u6027\uff1a<\/p>\n

      \n
    1. \u7528\u6237\u53ef\u8bbf\u95ee\u6027\uff1a<\/strong> \u5b83\u63d0\u4f9b\u4e86\u7528\u6237\u548c\u7f51\u7edc\u4e4b\u95f4\u7684\u76f4\u63a5\u63a5\u53e3\u3002<\/li>\n
    2. \u5b89\u5168\u7ba1\u7406\uff1a<\/strong> \u5b9e\u65bd\u7f51\u7edc\u5b89\u5168\u653f\u7b56\u5e76\u7ba1\u7406\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u3002<\/li>\n
    3. \u4ea4\u901a\u7ba1\u7406\uff1a<\/strong> \u5904\u7406 QoS \u4ee5\u5bf9\u67d0\u4e9b\u7c7b\u578b\u7684\u6d41\u91cf\u8fdb\u884c\u4f18\u5148\u6392\u5e8f\u3002<\/li>\n
    4. \u8bbe\u5907\u548c\u5a92\u4f53\u8fde\u63a5\uff1a<\/strong> \u5b83\u5c06\u5404\u79cd\u8bbe\u5907\u548c\u4e0d\u540c\u7c7b\u578b\u7684\u5a92\u4f53\u8fde\u63a5\u5230\u7f51\u7edc\u3002<\/li>\n<\/ol>\n

      \u8bbf\u95ee\u5c42\u7684\u7c7b\u578b<\/h2>\n

      \u5e7f\u4e49\u4e0a\u8bb2\uff0c\u63a5\u5165\u5c42\u53ef\u6839\u636e\u5176\u5b9e\u65bd\u7684\u7f51\u7edc\u7c7b\u578b\u8fdb\u884c\u5206\u7c7b\uff1a<\/p>\n

        \n
      1. LAN \u63a5\u5165\u5c42\uff1a<\/strong> \u8fde\u63a5\u672c\u5730\u7f51\u7edc\u4e2d\u7684\u7ec8\u7aef\u8bbe\u5907\uff0c\u901a\u5e38\u5728\u5bb6\u5ead\u6216\u529e\u516c\u5ba4\u73af\u5883\u4e2d\u3002<\/li>\n
      2. \u5e7f\u57df\u7f51\u63a5\u5165\u5c42\uff1a<\/strong> \u7531 ISP\uff08\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\uff09\u4f7f\u7528\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u4e92\u8054\u7f51\u8fde\u63a5\u3002<\/li>\n
      3. \u6570\u636e\u4e2d\u5fc3\u8bbf\u95ee\u5c42\uff1a<\/strong> \u5728\u6570\u636e\u4e2d\u5fc3\u73af\u5883\u4e2d\u8fde\u63a5\u670d\u52a1\u5668\u548c\u5b58\u50a8\u8bbe\u5907\u3002<\/li>\n<\/ol>\n\n\n\n\n\n\n\n
        \u7c7b\u578b<\/th>\n\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n
        \u5c40\u57df\u7f51<\/td>\n\u8fde\u63a5\u5bb6\u5ead\u6216\u529e\u516c\u5ba4\u7f51\u7edc\u4e2d\u7684 PC \u548c\u6253\u5370\u673a\u7b49\u8bbe\u5907<\/td>\n<\/tr>\n
        \u5e7f\u57df\u7f51<\/td>\n\u4e3a\u7528\u6237\u63d0\u4f9b ISP \u7ea7\u522b\u7684\u4e92\u8054\u7f51\u8fde\u63a5<\/td>\n<\/tr>\n
        \u6570\u636e\u4e2d\u5fc3<\/td>\n\u5728\u6570\u636e\u4e2d\u5fc3\u73af\u5883\u4e2d\u8fde\u63a5\u670d\u52a1\u5668\u548c\u5b58\u50a8\u8bbe\u5907<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u5229\u7528\u8bbf\u95ee\u5c42\uff1a\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848<\/h2>\n

        \u63a5\u5165\u5c42\u662f\u9632\u6b62\u672a\u7ecf\u6388\u6743\u8bbf\u95ee\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\uff0c\u56e0\u6b64\u5b89\u5168\u6027\u662f\u4e3b\u8981\u6311\u6218\u3002\u89e3\u51b3\u65b9\u6848\u5305\u62ec\u5f3a\u5927\u7684\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u548c\u5b9e\u65bd\u5b89\u5168\u7f51\u7edc\u8bbf\u95ee\u7b56\u7565\u3002<\/p>\n

        \u53e6\u4e00\u4e2a\u6311\u6218\u662f\u6709\u6548\u7ba1\u7406\u7f51\u7edc\u8d44\u6e90\uff0c\u5c24\u5176\u662f\u968f\u7740\u7f51\u7edc\u4f7f\u7528\u91cf\u548c\u9700\u6c42\u7684\u4e0d\u65ad\u589e\u957f\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u667a\u80fd\u6d41\u91cf\u7ba1\u7406\u548c\u4f18\u5148\u5904\u7406\u5173\u952e\u6d41\u91cf\u7684 QoS \u529f\u80fd\u6765\u89e3\u51b3\u3002<\/p>\n

        \u63a5\u5165\u5c42\u4e0e\u7c7b\u4f3c\u6982\u5ff5\u7684\u6bd4\u8f83<\/h2>\n\n\n\n\n\n\n
        \u5b66\u671f<\/th>\n\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n
        \u5206\u5e03\u5c42<\/td>\n\u805a\u5408\u6765\u81ea\u591a\u4e2a\u63a5\u5165\u5c42\u4ea4\u6362\u673a\u7684\u6570\u636e\u5e76\u5c06\u5176\u8def\u7531\u5230\u7f51\u7edc\u7684\u6b63\u786e\u90e8\u5206<\/td>\n<\/tr>\n
        \u6838\u5fc3\u5c42<\/td>\n\u7f51\u7edc\u7684\u4e3b\u5e72\uff0c\u5728\u5206\u5e03\u4ea4\u6362\u673a\u4e4b\u95f4\u63d0\u4f9b\u5feb\u901f\u3001\u9ad8\u6548\u7684\u4f20\u8f93<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u63a5\u5165\u5c42\u7684\u672a\u6765\u8d8b\u52bf\u548c\u6280\u672f<\/h2>\n

        \u968f\u7740\u7f51\u7edc\u6280\u672f\u7684\u53d1\u5c55\uff0c\u63a5\u5165\u5c42\u5c06\u53d8\u5f97\u66f4\u52a0\u667a\u80fd\u548c\u9002\u5e94\u6027\u5f3a\u3002\u8f6f\u4ef6\u5b9a\u4e49\u7f51\u7edc (SDN) \u548c\u7f51\u7edc\u529f\u80fd\u865a\u62df\u5316 (NFV) \u7b49\u8d8b\u52bf\u5c06\u5141\u8bb8\u5728\u63a5\u5165\u5c42\u8fdb\u884c\u66f4\u7075\u6d3b\u548c\u52a8\u6001\u7684\u7f51\u7edc\u7ba1\u7406\u3002\u6b64\u5916\uff0c\u968f\u7740\u7269\u8054\u7f51\u8bbe\u5907\u7684\u6fc0\u589e\uff0c\u63a5\u5165\u5c42\u5c06\u9700\u8981\u5904\u7406\u589e\u52a0\u7684\u8fde\u63a5\u548c\u5b89\u5168\u6311\u6218\u3002<\/p>\n

        \u4ee3\u7406\u670d\u52a1\u5668\u548c\u8bbf\u95ee\u5c42<\/h2>\n

        \u4ee3\u7406\u670d\u52a1\u5668\uff08\u4f8b\u5982 OneProxy \u63d0\u4f9b\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff09\u5145\u5f53\u5ba2\u6237\u7aef\u548c\u4e92\u8054\u7f51\u4e4b\u95f4\u7684\u4e2d\u4ecb\u3002\u5728\u8bbf\u95ee\u5c42\u4e2d\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u901a\u8fc7\u5c4f\u853d\u5ba2\u6237\u7aef\u7684 IP \u5730\u5740\u548c\u8fc7\u6ee4\u4f20\u5165\u6d41\u91cf\u6765\u589e\u52a0\u989d\u5916\u7684\u5b89\u5168\u5c42\u3002<\/p>\n

        \u4ee3\u7406\u670d\u52a1\u5668\u8fd8\u53ef\u4ee5\u5e2e\u52a9\u5b9e\u73b0\u63a5\u5165\u5c42\u7684\u8d1f\u8f7d\u5e73\u8861\uff0c\u786e\u4fdd\u7f51\u7edc\u8d44\u6e90\u5f97\u5230\u6709\u6548\u5229\u7528\u3002\u5b83\u4eec\u53ef\u4ee5\u7f13\u5b58\u6570\u636e\uff0c\u51cf\u5c11\u5e26\u5bbd\u4f7f\u7528\uff0c\u5e76\u63d0\u9ad8\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n

        \u76f8\u5173\u94fe\u63a5<\/h2>\n
          \n
        1. \u601d\u79d1 \u2013 \u5206\u5c42\u7f51\u7edc\u8bbe\u8ba1\u6982\u8ff0<\/a><\/li>\n
        2. TechTarget\u2014\u4ec0\u4e48\u662f\u8bbf\u95ee\u5c42\uff1f<\/a><\/li>\n
        3. NetworkLessons \u2013 \u5206\u5c42\u7f51\u7edc\u8bbe\u8ba1<\/a><\/li>\n
        4. OneProxy \u2013 \u4ee3\u7406\u670d\u52a1\u5668<\/a><\/li>\n<\/ol>","protected":false},"featured_media":475501,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475784","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Access Layer: A Detailed Overview<\/mark>","faq_items":[{"question":"What is the Access Layer in network architecture?","answer":"

          The Access Layer is the outermost layer in a network's hierarchical design. It serves as the entry point for users and devices to connect to the network and manages their access to various network services and resources.<\/p>"},{"question":"When and how did the concept of the Access Layer originate?","answer":"

          The concept of the Access Layer originated alongside the development of network architecture. It was solidified in the late 20th century, particularly with the Cisco three-layer hierarchical model that explicitly defined an Access Layer, along with Distribution and Core layers.<\/p>"},{"question":"What are the primary functions of the Access Layer?","answer":"

          The primary functions of the Access Layer include providing network access to the user, ensuring each device has sufficient resources to meet its network requirements, implementing policies for network security, traffic filtering, and QoS (Quality of Service), and handling error detection and packet re-transmission.<\/p>"},{"question":"What are the key features of the Access Layer?","answer":"

          The key features of the Access Layer include user accessibility, security management, traffic management, and device and media connectivity.<\/p>"},{"question":"How is the Access Layer categorized?","answer":"

          The Access Layer can be categorized based on the type of network they are implemented in, such as LAN Access Layer for local networks, WAN Access Layer for internet connectivity provided by ISPs, and Data Center Access Layer for connections within data center environments.<\/p>"},{"question":"What are the challenges associated with the Access Layer and how can they be addressed?","answer":"

          The primary challenges associated with the Access Layer include security and managing network resources effectively. These can be addressed through robust user authentication, secure network access policies, intelligent traffic management, and QoS features.<\/p>"},{"question":"How are proxy servers associated with the Access Layer?","answer":"

          Proxy servers act as intermediaries between a client and the internet. In the context of the Access Layer, a proxy server can enhance security by masking the client's IP address and filtering incoming traffic. It can also aid in load balancing and data caching, improving network performance.<\/p>"},{"question":"What are the future trends in the Access Layer technology?","answer":"

          Future trends in Access Layer technology include the increasing use of software-defined networking (SDN) and network functions virtualization (NFV), which will allow for more flexible and dynamic network management at the Access Layer. The proliferation of IoT devices also represents a significant trend, demanding increased connections and security capabilities at the Access Layer.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/475784","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\/475784\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/475501"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=475784"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}