{"id":119693,"date":"2026-10-30T07:16:28","date_gmt":"2026-10-29T23:16:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/119693.html"},"modified":"2026-10-30T07:16:28","modified_gmt":"2026-10-29T23:16:28","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3%e6%95%b0%e6%8d%ae%e9%93%be%e8%b7%af%e5%b1%82%ef%bc%9a%e4%bb%a5%e5%a4%aa%e7%bd%91%e3%80%81mac-%e5%9c%b0%e5%9d%80%e4%b8%8e%e4%ba%a4%e6%8d%a2%e6%9c%ba","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/119693.html","title":{"rendered":"\u6df1\u5165\u7406\u89e3\u6570\u636e\u94fe\u8def\u5c42\uff1a\u4ee5\u592a\u7f51\u3001MAC \u5730\u5740\u4e0e\u4ea4\u6362\u673a"},"content":{"rendered":"

\u6df1\u5165\u7406\u89e3\u6570\u636e\u94fe\u8def\u5c42：\u4ee5\u592a\u7f51\u3001MAC \u5730\u5740\u4e0e\u4ea4\u6362\u673a<\/h2>\n

\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u5206\u5c42\u4f53\u7cfb\u4e2d，\u7f51\u7edc\u5c42（IP）\u8d1f\u8d23\u5c06\u6570\u636e\u5305\u8de8\u8d8a\u65e0\u6570\u4e2a\u7f51\u7edc\u9001\u5230\u76ee\u7684\u5730，\u800c\u6570\u636e\u94fe\u8def\u5c42（Data Link Layer）\u5219\u8d1f\u8d23\u5c06\u8fd9\u4e9b\u6570\u636e\u5305\u5728\u76f8\u90bb\u7684\u4e24\u4e2a\u8282\u70b9\u4e4b\u95f4\u8fdb\u884c\u53ef\u9760\u4f20\u8f93\u3002<\/p>\n

\u5982\u679c\u628a\u7f51\u7edc\u901a\u4fe1\u6bd4\u4f5c\u5bc4\u5feb\u9012，\u7f51\u7edc\u5c42（IP）\u51b3\u5b9a\u4e86\u4ece\u5317\u4eac\u5230\u4e0a\u6d77\u7684\u5b8f\u89c2\u8def\u7ebf，\u800c\u6570\u636e\u94fe\u8def\u5c42\u5219\u8d1f\u8d23\u628a\u5305\u88f9\u4ece\u4f60\u5bb6\u9001\u5230\u5317\u4eac\u7684\u96c6\u6563\u4e2d\u5fc3，\u4ee5\u53ca\u4ece\u4e0a\u6d77\u7684\u96c6\u6563\u4e2d\u5fc3\u9001\u5230\u6536\u4ef6\u4eba\u624b\u91cc\u3002<\/p>\n

\u672c\u6587\u5c06\u8be6\u7ec6\u603b\u7ed3\u6570\u636e\u94fe\u8def\u5c42\u7684\u6838\u5fc3\u6982\u5ff5\u3001\u4ee5\u592a\u7f51\u5e27\u683c\u5f0f\u3001MAC \u5730\u5740\u3001ARP \u534f\u8bae\u4ee5\u53ca\u4ea4\u6362\u673a\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n

\n

\u4e00\u3001\u6570\u636e\u94fe\u8def\u5c42\u7684\u6838\u5fc3\u5b9a\u4f4d\u4e0e\u529f\u80fd<\/h3>\n

\u6570\u636e\u94fe\u8def\u5c42\u4f4d\u4e8e\u7269\u7406\u5c42\u4e4b\u4e0a\u3001\u7f51\u7edc\u5c42\u4e4b\u4e0b\u3002\u5b83\u7684\u4e3b\u8981\u804c\u8d23\u662f：<\/p>\n

  • \u5c01\u88c5\u6210\u5e27（Framing）：\u5728\u6570\u636e\u524d\u540e\u52a0\u4e0a\u9996\u90e8\u548c\u5c3e\u90e8，\u6784\u6210\u4e00\u4e2a\u6570\u636e\u5e27\u3002\u901a\u8fc7\u5e27\u5b9a\u754c\u7b26，\u63a5\u6536\u65b9\u624d\u80fd\u77e5\u9053\u54ea\u91cc\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u62a5\u6587\u3002<\/li>\n
  • \u900f\u660e\u4f20\u8f93：\u65e0\u8bba\u6570\u636e\u90e8\u5206\u51fa\u73b0\u4ec0\u4e48\u6bd4\u7279\u7ec4\u5408，\u90fd\u80fd\u4fdd\u8bc1\u6b63\u786e\u4f20\u8f93\u3002\u5982\u679c\u6570\u636e\u90e8\u5206\u521a\u597d\u51fa\u73b0\u4e86\u4e0e\u5e27\u5b9a\u754c\u7b26\u76f8\u540c\u7684\u6bd4\u7279，\u901a\u5e38\u4f7f\u7528**\u5b57\u8282\u586b\u5145（\u8f6c\u4e49\u5b57\u7b26)**\u6765\u89e3\u51b3\u3002<\/li>\n
  • \u5dee\u9519\u68c0\u6d4b：\u4f7f\u7528 CRC（\u5faa\u73af\u5197\u4f59\u6821\u9a8c） \u68c0\u6d4b\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u662f\u5426\u51fa\u73b0\u4e86\u6bd4\u7279\u5dee\u9519（\u5982 0 \u53d8\u6210 1）\u3002\u5982\u679c\u51fa\u9519，\u76f4\u63a5\u4e22\u5f03\u8be5\u5e27\u3002<\/li>\n
  • \u5bfb\u5740\u4e0e\u4ecb\u8d28\u8bbf\u95ee\u63a7\u5236：\u901a\u8fc7 MAC \u5730\u5740 \u6807\u8bc6\u5c40\u57df\u7f51\u4e2d\u7684\u8bbe\u5907，\u5e76\u5728\u5171\u4eab\u4ecb\u8d28\u4e0a\u534f\u8c03\u8c01\u53ef\u4ee5\u53d1\u9001\u6570\u636e（\u5982 CSMA\/CD \u534f\u8bae）\u3002<\/li>\n
    \n

    \u4e8c\u3001\u4ee5\u592a\u7f51\u4e0e MAC \u5730\u5740<\/h3>\n

    \u4ee5\u592a\u7f51（Ethernet） \u662f\u76ee\u524d\u6700\u4e3b\u6d41\u7684\u5c40\u57df\u7f51（LAN）\u6280\u672f\u3002\u65e0\u8bba\u662f\u63d2\u7f51\u7ebf\u8fd8\u662f\u6709\u7ebf\u8fde\u63a5，\u57fa\u672c\u90fd\u662f\u4ee5\u592a\u7f51\u3002<\/p>\n

    1. \u4ec0\u4e48\u662f MAC \u5730\u5740？<\/h4>\n
      \n
    • MAC \u5730\u5740（\u7269\u7406\u5730\u5740\/\u786c\u4ef6\u5730\u5740）：\u662f\u70e7\u5f55\u5728\u7f51\u5361（NIC）\u4e0a\u7684\u5168\u7403\u552f\u4e00\u6807\u8bc6\u7b26\u3002<\/li>\n
    • \u683c\u5f0f：\u957f\u5ea6\u4e3a 48 \u4f4d（6 \u4e2a\u5b57\u8282），\u901a\u5e38\u7528\u5341\u516d\u8fdb\u5236\u8868\u793a，\u5982 00:1A:2B:3C:4D:5E\u3002<\/li>\n
    • \u524d 24 \u4f4d\u662f\u5382\u5546\u8bc6\u522b\u7801，\u540e 24 \u4f4d\u662f\u5382\u5546\u81ea\u884c\u5206\u914d\u7684\u5e8f\u5217\u53f7\u3002<\/li>\n
    • \u5e7f\u64ad MAC \u5730\u5740：FF:FF:FF:FF:FF:FF\u3002\u5f53\u76ee\u7684\u5730\u5740\u4e3a\u5168 F \u65f6，\u5c40\u57df\u7f51\u5185\u7684\u6240\u6709\u8bbe\u5907\u90fd\u4f1a\u63a5\u6536\u5e76\u5904\u7406\u8be5\u5e27\u3002<\/li>\n<\/ul>\n

      IP \u5730\u5740 vs MAC \u5730\u5740：<\/p>\n

        \n
      • IP \u5730\u5740\u662f\u903b\u8f91\u5730\u5740，\u63cf\u8ff0\u4f60\u6240\u5904\u7684\u7f51\u7edc\u4f4d\u7f6e（\u50cf\u201c\u5c0f\u533a\u95e8\u724c\u53f7\u201d），\u4f1a\u968f\u7740\u4f60\u8fde\u63a5\u4e0d\u540c\u7f51\u7edc\u800c\u6539\u53d8\u3002<\/li>\n
      • MAC \u5730\u5740\u662f\u7269\u7406\u5730\u5740，\u6807\u8bc6\u4f60\u8fd9\u53f0\u7269\u7406\u8bbe\u5907（\u50cf\u201c\u8eab\u4efd\u8bc1\u53f7\u201d），\u4e0d\u53ef\u66f4\u6539\u3002<\/li>\n<\/ul>\n
        \n

        \u4e09\u3001\u4ee5\u592a\u7f51\u5e27\u683c\u5f0f（Ethernet V2）<\/h3>\n

        \u4ee5\u592a\u7f51\u7684\u6570\u636e\u5e27\u683c\u5f0f\u662f\u7406\u89e3\u5c40\u57df\u7f51\u901a\u4fe1\u7684\u57fa\u7840\u3002\u76ee\u524d\u6700\u901a\u7528\u7684\u662f Ethernet V2 \u6807\u51c6\u3002<\/p>\n

        +———-+———-+——–+——————-+———-+
        \n| \u76ee\u7684\u5730\u5740 | \u6e90\u5730\u5740 | \u7c7b\u578b | \u6570\u636e(\u8f7d\u8377) | FCS |
        \n| (6\u5b57\u8282) | (6\u5b57\u8282) | (2\u5b57\u8282)| (46 ~ 1500\u5b57\u8282) | (4\u5b57\u8282) |
        \n+———-+———-+——–+——————-+———-+<\/p>\n

        \u5b57\u6bb5\u89e3\u6790：<\/h4>\n
      • \u76ee\u7684\u5730\u5740 \/ \u6e90\u5730\u5740：\u5373\u63a5\u6536\u65b9\u548c\u53d1\u9001\u65b9\u7684 MAC \u5730\u5740\u3002<\/li>\n
      • \u7c7b\u578b（Type）：\u6807\u8bc6\u6570\u636e\u90e8\u5206\u7684\u534f\u8bae\u7c7b\u578b\u3002\u4f8b\u5982：0x0800 \u4ee3\u8868\u4e0a\u5c42\u662f IP \u534f\u8bae，0x0806 \u4ee3\u8868 ARP \u534f\u8bae\u3002<\/li>\n
      • \u6570\u636e：\u4e0a\u5c42\u7684 IP \u6570\u636e\u62a5\u3002\u6700\u5c0f\u957f\u5ea6\u4e3a 46 \u5b57\u8282（\u5982\u679c\u4e0d\u591f，\u9700\u8981\u586b\u5145），\u6700\u5927\u4e3a 1500 \u5b57\u8282\u3002<\/li>\n
      • FCS（\u5e27\u68c0\u9a8c\u5e8f\u5217）：4 \u5b57\u8282\u7684 CRC \u6821\u9a8c\u7801，\u7528\u4e8e\u68c0\u6d4b\u5e27\u4f20\u8f93\u4e2d\u662f\u5426\u53d1\u751f\u9519\u8bef\u3002<\/li>\n

        \u91cd\u70b9：MTU（\u6700\u5927\u4f20\u8f93\u5355\u5143）
        \n\u4ee5\u592a\u7f51\u5e27\u4e2d\u201c\u6570\u636e\u201d\u90e8\u5206\u7684\u6700\u5927\u957f\u5ea6\u662f 1500 \u5b57\u8282，\u8fd9\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684 MTU\u3002\u8fd9\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u5728\u4e0a\u4e00\u8282 IP \u534f\u8bae\u4e2d，\u5982\u679c IP \u6570\u636e\u62a5\u8d85\u8fc7 1500 \u5b57\u8282\u5c31\u9700\u8981\u8fdb\u884c IP \u5206\u7247\u3002<\/p>\n

        \u4e3a\u4ec0\u4e48\u6700\u5c0f\u957f\u5ea6\u662f 64 \u5b57\u8282？
        \n\u4ee5\u592a\u7f51\u65e9\u671f\u4f7f\u7528 CSMA\/CD（\u8f7d\u6ce2\u76d1\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u68c0\u6d4b）\u534f\u8bae\u3002\u5982\u679c\u5e27\u592a\u77ed，\u53d1\u9001\u65b9\u53ef\u80fd\u5728\u68c0\u6d4b\u5230\u51b2\u7a81\u4e4b\u524d\u5c31\u5df2\u7ecf\u53d1\u5b8c\u4e86\u3002\u4e3a\u4e86\u786e\u4fdd\u53d1\u9001\u65b9\u80fd\u6536\u5230\u51b2\u7a81\u4fe1\u53f7，\u5e27\u5fc5\u987b\u6709\u4e00\u4e2a\u6700\u5c0f\u53d1\u9001\u65f6\u95f4，\u6362\u7b97\u4e0b\u6765\u5c31\u662f 64 \u5b57\u8282（6+6+2+46+4）\u3002<\/p>\n

        \n

        \u56db\u3001ARP \u534f\u8bae（\u5730\u5740\u89e3\u6790\u534f\u8bae）<\/h3>\n

        \u5728\u53d1\u9001\u6570\u636e\u65f6，\u6211\u4eec\u9700\u8981\u6784\u9020\u4ee5\u592a\u7f51\u5e27，\u8fd9\u9700\u8981\u76ee\u7684 MAC \u5730\u5740\u3002\u4f46\u5e94\u7528\u5c42\u901a\u5e38\u53ea\u7ed9\u6211\u4eec\u76ee\u7684 IP \u5730\u5740\u3002\u5982\u4f55\u901a\u8fc7 IP \u627e\u5230 MAC？\u8fd9\u5c31\u662f ARP（Address Resolution Protocol） \u7684\u5de5\u4f5c\u3002<\/p>\n

        ARP \u5de5\u4f5c\u6d41\u7a0b：<\/h4>\n

        \u5047\u8bbe\u4e3b\u673a A \u77e5\u9053\u4e3b\u673a B \u7684 IP，\u4f46\u4e0d\u77e5\u9053 B \u7684 MAC \u5730\u5740\u3002<\/p>\n

      • \u67e5\u7f13\u5b58：A \u5148\u67e5\u627e\u672c\u673a\u7684 ARP \u9ad8\u901f\u7f13\u5b58\u8868，\u770b\u662f\u5426\u6709 B \u7684 IP-MAC \u6620\u5c04\u3002<\/li>\n
      • \u5e7f\u64ad\u8bf7\u6c42：\u5982\u679c\u6ca1\u6709，A \u4f1a\u5728\u5c40\u57df\u7f51\u5185\u5e7f\u64ad\u4e00\u4e2a ARP \u8bf7\u6c42\u62a5\u6587（\u4ee5\u592a\u7f51\u76ee\u7684\u5730\u5740\u4e3a FF:FF:FF:FF:FF:FF），\u5185\u5bb9\u5927\u81f4\u662f：\u201c\u8c01\u7684 IP \u662f xxx？\u8bf7\u544a\u8bc9\u6211\u4f60\u7684 MAC \u5730\u5740\u3002\u201d<\/li>\n
      • \u5355\u64ad\u54cd\u5e94：\u5c40\u57df\u7f51\u5185\u6240\u6709\u4e3b\u673a\u90fd\u4f1a\u6536\u5230\u8be5\u5e7f\u64ad，\u4f46\u53ea\u6709 IP \u5339\u914d\u7684\u4e3b\u673a B \u4f1a\u56de\u5e94\u4e00\u4e2a ARP \u54cd\u5e94\u62a5\u6587（\u5355\u64ad），\u544a\u8bc9 A \u81ea\u5df1\u7684 MAC \u5730\u5740\u3002<\/li>\n
      • \u66f4\u65b0\u7f13\u5b58：A \u6536\u5230\u54cd\u5e94\u540e，\u5c06 B \u7684 IP-MAC \u6620\u5c04\u5199\u5165\u672c\u5730 ARP \u7f13\u5b58（\u901a\u5e38\u6709\u51e0\u5206\u949f\u7684\u751f\u547d\u5468\u671f）\u3002<\/li>\n

        \u6ce8\u610f：\u5982\u679c\u76ee\u6807 IP \u4e0d\u5728\u540c\u4e00\u5c40\u57df\u7f51（\u8de8\u7f51\u6bb5\u901a\u4fe1），ARP \u8bf7\u6c42\u7684\u5c06\u4e0d\u662f\u76ee\u6807\u4e3b\u673a\u7684 MAC，\u800c\u662f**\u9ed8\u8ba4\u7f51\u5173（\u8def\u7531\u5668）**\u7684 MAC \u5730\u5740\u3002<\/p>\n

        \n

        \u4e94\u3001\u4ea4\u6362\u673a（Switch）\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n

        \u5728\u4ee5\u592a\u7f51\u4e2d，\u8fde\u63a5\u591a\u53f0\u8bbe\u5907\u7684\u67a2\u7ebd\u662f\u4ea4\u6362\u673a\u3002\u4e0d\u540c\u4e8e\u65e9\u671f\u7684\u96c6\u7ebf\u5668（Hub，\u5de5\u4f5c\u5728\u7269\u7406\u5c42，\u65e0\u8111\u5e7f\u64ad），\u4ea4\u6362\u673a\u5de5\u4f5c\u5728\u6570\u636e\u94fe\u8def\u5c42\u3002<\/p>\n

        \u4ea4\u6362\u673a\u5982\u4f55\u8f6c\u53d1\u6570\u636e？<\/h4>\n

        \u4ea4\u6362\u673a\u5185\u90e8\u7ef4\u62a4\u4e00\u5f20 MAC \u5730\u5740\u8868（\u8f6c\u53d1\u8868），\u8bb0\u5f55\u4e86\u201cMAC \u5730\u5740 -> \u5bf9\u5e94\u4ea4\u6362\u673a\u7aef\u53e3\u201d\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n

      • \u81ea\u5b66\u4e60（Source MAC）：\u5f53\u4ea4\u6362\u673a\u7684\u67d0\u4e2a\u7aef\u53e3\u6536\u5230\u4e00\u4e2a\u5e27\u65f6，\u5b83\u4f1a\u8bfb\u53d6\u5e27\u7684\u6e90 MAC \u5730\u5740，\u5e76\u628a\u201c\u8be5 MAC \u5730\u5740\u4e0e\u63a5\u6536\u7aef\u53e3\u7684\u5bf9\u5e94\u5173\u7cfb\u201d\u8bb0\u5f55\u5230 MAC \u5730\u5740\u8868\u4e2d\u3002<\/li>\n
      • \u8f6c\u53d1\/\u8fc7\u6ee4（Dest MAC）：\n
          \n
        • \u5982\u679c\u5e27\u7684\u76ee\u7684 MAC \u5728\u8868\u4e2d\u6709\u8bb0\u5f55，\u4ea4\u6362\u673a\u76f4\u63a5\u5c06\u5e27\u4ece\u5bf9\u5e94\u7aef\u53e3\u53d1\u51fa\u53bb（\u5355\u64ad）\u3002<\/li>\n
        • \u5982\u679c\u76ee\u7684 MAC \u662f\u5e7f\u64ad\u5730\u5740，\u6216\u8005\u8868\u4e2d\u67e5\u4e0d\u5230\u76ee\u7684 MAC，\u4ea4\u6362\u673a\u4f1a\u5c06\u5e27\u5411\u9664\u63a5\u6536\u7aef\u53e3\u5916\u7684\u6240\u6709\u7aef\u53e3\u53d1\u9001（\u6cdb\u6d2a\/\u5e7f\u64ad）\u3002<\/li>\n<\/ul>\n<\/li>\n

          \u4ea4\u6362\u673a vs \u96c6\u7ebf\u5668<\/h4>\n
            \n
          • \u96c6\u7ebf\u5668（Hub）：\u7269\u7406\u5c42\u8bbe\u5907\u3002\u6240\u6709\u7aef\u53e3\u540c\u5c5e\u4e00\u4e2a\u51b2\u7a81\u57df\u548c\u5e7f\u64ad\u57df\u3002\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u53f0\u8bbe\u5907\u53d1\u6570\u636e，\u5426\u5219\u4f1a\u51b2\u7a81\u3002<\/li>\n
          • \u4ea4\u6362\u673a（Switch）：\u6570\u636e\u94fe\u8def\u5c42\u8bbe\u5907\u3002\u6bcf\u4e2a\u7aef\u53e3\u90fd\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u51b2\u7a81\u57df（\u652f\u6301\u5168\u53cc\u5de5\u901a\u4fe1，\u65e0\u51b2\u7a81），\u4f46\u6240\u6709\u7aef\u53e3\u9ed8\u8ba4\u540c\u5c5e\u4e00\u4e2a\u5e7f\u64ad\u57df（\u9664\u975e\u5212\u5206\u4e86 VLAN）\u3002<\/li>\n<\/ul>\n
            \n

            \u516d\u3001\u5e38\u89c1\u6570\u636e\u94fe\u8def\u5c42\u534f\u8bae\u6269\u5c55<\/h3>\n
              \n
            • VLAN（\u865a\u62df\u5c40\u57df\u7f51）：\u901a\u8fc7\u5728\u4ee5\u592a\u7f51\u5e27\u4e2d\u63d2\u5165 4 \u5b57\u8282\u7684 VLAN \u6807\u7b7e，\u5c06\u4e00\u4e2a\u7269\u7406\u4ea4\u6362\u673a\u903b\u8f91\u4e0a\u5212\u5206\u4e3a\u591a\u4e2a\u5e7f\u64ad\u57df，\u9694\u79bb\u5e7f\u64ad\u98ce\u66b4，\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/li>\n
            • PPP（\u70b9\u5bf9\u70b9\u534f\u8bae）：\u5e38\u7528\u4e8e\u62e8\u53f7\u4e0a\u7f51\u6216\u8def\u7531\u5668\u4e4b\u95f4\u7684\u5e7f\u57df\u7f51\u8fde\u63a5，\u4e0d\u6d89\u53ca MAC \u5730\u5740\u5bfb\u5740\u3002<\/li>\n<\/ul>\n
              \n

              \u4e03\u3001\u603b\u7ed3<\/h3>\n

              \u6570\u636e\u94fe\u8def\u5c42\u89e3\u51b3\u4e86\u7f51\u7edc\u901a\u4fe1\u4e2d**\u201c\u76f8\u90bb\u8282\u70b9\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u201d**\u95ee\u9898：<\/p>\n

            • \u4ee5\u5e27\u4e3a\u5355\u4f4d\u4f20\u8f93\u6570\u636e，\u5305\u542b MAC \u5730\u5740\u548c FCS \u6821\u9a8c\u3002<\/li>\n
            • MAC \u5730\u5740\u662f\u5c40\u57df\u7f51\u5185\u5bfb\u5740\u7684\u7269\u7406\u6807\u8bc6\u3002<\/li>\n
            • ARP \u534f\u8bae\u662f\u8fde\u63a5\u7f51\u7edc\u5c42（IP）\u548c\u6570\u636e\u94fe\u8def\u5c42（MAC）\u7684\u6865\u6881\u3002<\/li>\n
            • \u4ee5\u592a\u7f51\u9ed8\u8ba4 MTU \u4e3a 1500 \u5b57\u8282，\u9650\u5236\u7740\u4e0a\u5c42\u534f\u8bae\u7684\u5206\u7247\u7b56\u7565\u3002<\/li>\n
            • \u4ea4\u6362\u673a\u4f9d\u9760 MAC \u5730\u5740\u8868\u5b9e\u73b0\u70b9\u5bf9\u70b9\u7684\u9ad8\u901f\u6570\u636e\u5e27\u8f6c\u53d1\u3002<\/li>\n

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              \n\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u5206\u5c42\u4f53\u7cfb\u4e2d，\u7f51\u7edc\u5c42（IP）\u8d1f\u8d23\u5c06\u6570\u636e\u5305\u8de8\u8d8a\u65e0\u6570\u4e2a\u7f51\u7edc\u9001\u5230\u76ee\u7684\u5730，\u800c\u6570\u636e\u94fe\u8def\u5c42（Data Link Layer）\u5219\u8d1f\u8d23\u5c06\u8fd9\u4e9b\u6570\u636e\u5305\u5728\u76f8\u90bb\u7684\u4e24\u4e2a\u8282\u70b9\u4e4b\u95f4\u8fdb\u884c\u53ef\u9760\u4f20\u8f93\u3002
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