ARP协议中一台主机如果从来不发送数据那么它的MAC地址就不会被交换机学习到正确还是错误？ 交换机在计算机arp时是不是学习了它的mac地址?
\u5173\u4e8earp\u653b\u51fb\u4e00\u3001ARP\u6982\u5ff5
\u54b1\u4eec\u8c08ARP\u4e4b\u524d\uff0c\u8fd8\u662f\u5148\u8981\u77e5\u9053ARP\u7684\u6982\u5ff5\u548c\u5de5\u4f5c\u539f\u7406\uff0c\u7406\u89e3\u4e86\u539f\u7406\u77e5\u8bc6\uff0c\u624d\u80fd\u66f4\u597d\u53bb\u9762\u5bf9\u548c\u5206\u6790\u5904\u7406\u95ee\u9898\u3002
1.1ARP\u6982\u5ff5\u77e5\u8bc6
ARP\uff0c\u5168\u79f0Address Resolution Protocol\uff0c\u4e2d\u6587\u540d\u4e3a\u5730\u5740\u89e3\u6790\u534f\u8bae\uff0c\u5b83\u5de5\u4f5c\u5728\u6570\u636e\u94fe\u8def\u5c42\uff0c\u5728\u672c\u5c42\u548c\u786c\u4ef6\u63a5\u53e3\u8054\u7cfb\uff0c\u540c\u65f6\u5bf9\u4e0a\u5c42\u63d0\u4f9b\u670d\u52a1\u3002
IP\u6570\u636e\u5305\u5e38\u901a\u8fc7\u4ee5\u592a\u7f51\u53d1\u9001\uff0c\u4ee5\u592a\u7f51\u8bbe\u5907\u5e76\u4e0d\u8bc6\u522b32\u4f4dIP\u5730\u5740\uff0c\u5b83\u4eec\u662f\u4ee548\u4f4d\u4ee5\u592a\u7f51\u5730\u5740\u4f20\u8f93\u4ee5\u592a\u7f51\u6570\u636e\u5305\u3002\u56e0\u6b64\uff0c\u5fc5\u987b\u628aIP\u76ee\u7684\u5730\u5740\u8f6c\u6362\u6210\u4ee5\u592a\u7f51\u76ee\u7684\u5730\u5740\u3002\u5728\u4ee5\u592a\u7f51\u4e2d\uff0c\u4e00\u4e2a\u4e3b\u673a\u8981\u548c\u53e6\u4e00\u4e2a\u4e3b\u673a\u8fdb\u884c\u76f4\u63a5\u901a\u4fe1\uff0c\u5fc5\u987b\u8981\u77e5\u9053\u76ee\u6807\u4e3b\u673a\u7684MAC\u5730\u5740\u3002\u4f46\u8fd9\u4e2a\u76ee\u6807MAC\u5730\u5740\u662f\u5982\u4f55\u83b7\u5f97\u7684\u5462\uff1f\u5b83\u5c31\u662f\u901a\u8fc7\u5730\u5740\u89e3\u6790\u534f\u8bae\u83b7\u5f97\u7684\u3002ARP\u534f\u8bae\u7528\u4e8e\u5c06\u7f51\u7edc\u4e2d\u7684IP\u5730\u5740\u89e3\u6790\u4e3a\u7684\u786c\u4ef6\u5730\u5740\uff08MAC\u5730\u5740\uff09\uff0c\u4ee5\u4fdd\u8bc1\u901a\u4fe1\u7684\u987a\u5229\u8fdb\u884c\u3002
1.2ARP\u5de5\u4f5c\u539f\u7406
\u9996\u5148\uff0c\u6bcf\u53f0\u4e3b\u673a\u90fd\u4f1a\u5728\u81ea\u5df1\u7684ARP\u7f13\u51b2\u533a\u4e2d\u5efa\u7acb\u4e00\u4e2a ARP\u5217\u8868\uff0c\u4ee5\u8868\u793aIP\u5730\u5740\u548cMAC\u5730\u5740\u7684\u5bf9\u5e94\u5173\u7cfb\u3002\u5f53\u6e90\u4e3b\u673a\u9700\u8981\u5c06\u4e00\u4e2a\u6570\u636e\u5305\u8981\u53d1\u9001\u5230\u76ee\u7684\u4e3b\u673a\u65f6\uff0c\u4f1a\u9996\u5148\u68c0\u67e5\u81ea\u5df1 ARP\u5217\u8868\u4e2d\u662f\u5426\u5b58\u5728\u8be5 IP\u5730\u5740\u5bf9\u5e94\u7684MAC\u5730\u5740\uff0c\u5982\u679c\u6709\uff0c\u5c31\u76f4\u63a5\u5c06\u6570\u636e\u5305\u53d1\u9001\u5230\u8fd9\u4e2aMAC\u5730\u5740\uff1b\u5982\u679c\u6ca1\u6709\uff0c\u5c31\u5411\u672c\u5730\u7f51\u6bb5\u53d1\u8d77\u4e00\u4e2aARP\u8bf7\u6c42\u7684\u5e7f\u64ad\u5305\uff0c\u67e5\u8be2\u6b64\u76ee\u7684\u4e3b\u673a\u5bf9\u5e94\u7684MAC\u5730\u5740\u3002\u6b64ARP\u8bf7\u6c42\u6570\u636e\u5305\u91cc\u5305\u62ec\u6e90\u4e3b\u673a\u7684IP\u5730\u5740\u3001\u786c\u4ef6\u5730\u5740\u3001\u4ee5\u53ca\u76ee\u7684\u4e3b\u673a\u7684IP\u5730\u5740\u3002\u7f51\u7edc\u4e2d\u6240\u6709\u7684\u4e3b\u673a\u6536\u5230\u8fd9\u4e2aARP\u8bf7\u6c42\u540e\uff0c\u4f1a\u68c0\u67e5\u6570\u636e\u5305\u4e2d\u7684\u76ee\u7684IP\u662f\u5426\u548c\u81ea\u5df1\u7684IP\u5730\u5740\u4e00\u81f4\u3002\u5982\u679c\u4e0d\u76f8\u540c\u5c31\u5ffd\u7565\u6b64\u6570\u636e\u5305\uff1b\u5982\u679c\u76f8\u540c\uff0c\u8be5\u4e3b\u673a\u9996\u5148\u5c06\u53d1\u9001\u7aef\u7684MAC\u5730\u5740\u548cIP\u5730\u5740\u6dfb\u52a0\u5230\u81ea\u5df1\u7684ARP\u5217\u8868\u4e2d\uff0c\u5982\u679cARP\u8868\u4e2d\u5df2\u7ecf\u5b58\u5728\u8be5IP\u7684\u4fe1\u606f\uff0c\u5219\u5c06\u5176\u8986\u76d6\uff0c\u7136\u540e\u7ed9\u6e90\u4e3b\u673a\u53d1\u9001\u4e00\u4e2a ARP\u54cd\u5e94\u6570\u636e\u5305\uff0c\u544a\u8bc9\u5bf9\u65b9\u81ea\u5df1\u662f\u5b83\u9700\u8981\u67e5\u627e\u7684MAC\u5730\u5740\uff1b\u6e90\u4e3b\u673a\u6536\u5230\u8fd9\u4e2aARP\u54cd\u5e94\u6570\u636e\u5305\u540e\uff0c\u5c06\u5f97\u5230\u7684\u76ee\u7684\u4e3b\u673a\u7684IP\u5730\u5740\u548cMAC\u5730\u5740\u6dfb\u52a0\u5230\u81ea\u5df1\u7684ARP\u5217\u8868\u4e2d\uff0c\u5e76\u5229\u7528\u6b64\u4fe1\u606f\u5f00\u59cb\u6570\u636e\u7684\u4f20\u8f93\u3002\u5982\u679c\u6e90\u4e3b\u673a\u4e00\u76f4\u6ca1\u6709\u6536\u5230ARP\u54cd\u5e94\u6570\u636e\u5305\uff0c\u8868\u793aARP\u67e5\u8be2\u5931\u8d25\u3002
\u4f8b\u5982\uff1a
A\u7684\u5730\u5740\u4e3a\uff1aIP\uff1a192.168.10.1 MAC: AA-AA-AA-AA-AA-AA
B\u7684\u5730\u5740\u4e3a\uff1aIP\uff1a192.168.10.2 MAC: BB-BB-BB-BB-BB-BB
\u6839\u636e\u4e0a\u9762\u7684\u6240\u8bb2\u7684\u539f\u7406\uff0c\u6211\u4eec\u7b80\u5355\u8bf4\u660e\u8fd9\u4e2a\u8fc7\u7a0b\uff1aA\u8981\u548cB\u901a\u8baf\uff0cA\u5c31\u9700\u8981\u77e5\u9053B\u7684\u4ee5\u592a\u7f51\u5730\u5740\uff0c\u4e8e\u662fA\u53d1\u9001\u4e00\u4e2aARP\u8bf7\u6c42\u5e7f\u64ad\uff08\u8c01\u662f192.168.10.2 \uff0c\u8bf7\u544a\u8bc9192.168.10.1\uff09\uff0c\u5f53B\u6536\u5230\u8be5\u5e7f\u64ad\uff0c\u5c31\u68c0\u67e5\u81ea\u5df1\uff0c\u7ed3\u679c\u53d1\u73b0\u548c\u81ea\u5df1\u7684\u4e00\u81f4\uff0c\u7136\u540e\u5c31\u5411A\u53d1\u9001\u4e00\u4e2aARP\u5355\u64ad\u5e94\u7b54\uff08192.168.10.2 \u5728BB-BB-BB-BB-BB-BB\uff09\u3002
1.3ARP\u901a\u8baf\u6a21\u5f0f
\u901a\u8baf\u6a21\u5f0f\uff08Pattern Analysis\uff09\uff1a\u5728\u7f51\u7edc\u5206\u6790\u4e2d\uff0c\u901a\u8baf\u6a21\u5f0f\u7684\u5206\u6790\u662f\u5f88\u91cd\u8981\u7684\uff0c\u4e0d\u540c\u7684\u534f\u8bae\u548c\u4e0d\u540c\u7684\u5e94\u7528\u90fd\u4f1a\u6709\u4e0d\u540c\u7684\u901a\u8baf\u6a21\u5f0f\u3002\u66f4\u6709\u4e9b\u65f6\u5019\uff0c\u76f8\u540c\u7684\u534f\u8bae\u5728\u4e0d\u540c\u7684\u4f01\u4e1a\u5e94\u7528\u4e2d\u4e5f\u4f1a\u51fa\u73b0\u4e0d\u540c\u7684\u901a\u8baf\u6a21\u5f0f\u3002ARP\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\u7684\u901a\u8baf\u6a21\u5f0f\u5e94\u8be5\u662f\uff1a\u8bf7\u6c42 -> \u5e94\u7b54 -> \u8bf7\u6c42 -> \u5e94\u7b54\uff0c\u4e5f\u5c31\u662f\u5e94\u8be5\u4e00\u95ee\u4e00\u7b54\u3002
\u4e8c\u3001\u5e38\u89c1ARP\u653b\u51fb\u7c7b\u578b
\u4e2a\u4eba\u8ba4\u4e3a\u5e38\u89c1\u7684ARP\u653b\u51fb\u4e3a\u4e24\u79cd\u7c7b\u578b\uff1aARP\u626b\u63cf\u548cARP\u6b3a\u9a97\u3002
2.1ARP\u626b\u63cf\uff08ARP\u8bf7\u6c42\u98ce\u66b4\uff09
\u901a\u8baf\u6a21\u5f0f\uff08\u53ef\u80fd\uff09\uff1a
\u8bf7\u6c42 -> \u8bf7\u6c42 -> \u8bf7\u6c42 -> \u8bf7\u6c42 -> \u8bf7\u6c42 -> \u8bf7\u6c42 -> \u5e94\u7b54 -> \u8bf7\u6c42 -> \u8bf7\u6c42 -> \u8bf7\u6c42...
\u63cf\u8ff0\uff1a
\u7f51\u7edc\u4e2d\u51fa\u73b0\u5927\u91cfARP\u8bf7\u6c42\u5e7f\u64ad\u5305\uff0c\u51e0\u4e4e\u90fd\u662f\u5bf9\u7f51\u6bb5\u5185\u7684\u6240\u6709\u4e3b\u673a\u8fdb\u884c\u626b\u63cf\u3002\u5927\u91cf\u7684ARP\u8bf7\u6c42\u5e7f\u64ad\u53ef\u80fd\u4f1a\u5360\u7528\u7f51\u7edc\u5e26\u5bbd\u8d44\u6e90\uff1bARP\u626b\u63cf\u4e00\u822c\u4e3aARP\u653b\u51fb\u7684\u524d\u594f\u3002
\u51fa\u73b0\u539f\u56e0\uff08\u53ef\u80fd\uff09\uff1a
\u75c5\u6bd2\u7a0b\u5e8f\uff0c\u4fa6\u542c\u7a0b\u5e8f\uff0c\u626b\u63cf\u7a0b\u5e8f\u3002
\u5982\u679c\u7f51\u7edc\u5206\u6790\u8f6f\u4ef6\u90e8\u7f72\u6b63\u786e\uff0c\u53ef\u80fd\u662f\u6211\u4eec\u53ea\u955c\u50cf\u4e86\u4ea4\u6362\u673a\u4e0a\u7684\u90e8\u5206\u7aef\u53e3\uff0c\u6240\u4ee5\u5927\u91cfARP\u8bf7\u6c42\u662f\u6765\u81ea\u4e0e\u975e\u955c\u50cf\u53e3\u8fde\u63a5\u7684\u5176\u5b83\u4e3b\u673a\u53d1\u51fa\u7684\u3002
\u5982\u679c\u90e8\u7f72\u4e0d\u6b63\u786e\uff0c\u8fd9\u4e9bARP\u8bf7\u6c42\u5e7f\u64ad\u5305\u662f\u6765\u81ea\u548c\u4ea4\u6362\u673a\u76f8\u8fde\u7684\u5176\u5b83\u4e3b\u673a\u3002
2.2ARP\u6b3a\u9a97
ARP\u534f\u8bae\u5e76\u4e0d\u53ea\u5728\u53d1\u9001\u4e86ARP\u8bf7\u6c42\u624d\u63a5\u6536ARP\u5e94\u7b54\u3002\u5f53\u8ba1\u7b97\u673a\u63a5\u6536\u5230ARP\u5e94\u7b54\u6570\u636e\u5305\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u5bf9\u672c\u5730\u7684ARP\u7f13\u5b58\u8fdb\u884c\u66f4\u65b0\uff0c\u5c06\u5e94\u7b54\u4e2d\u7684IP\u548cMAC\u5730\u5740\u5b58\u50a8\u5728ARP\u7f13\u5b58\u4e2d\u3002\u6240\u4ee5\u5728\u7f51\u7edc\u4e2d\uff0c\u6709\u4eba\u53d1\u9001\u4e00\u4e2a\u81ea\u5df1\u4f2a\u9020\u7684ARP\u5e94\u7b54\uff0c\u7f51\u7edc\u53ef\u80fd\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898\u3002\u8fd9\u53ef\u80fd\u5c31\u662f\u534f\u8bae\u8bbe\u8ba1\u8005\u5f53\u521d\u6ca1\u8003\u8651\u5230\u7684\uff01
2.2.1\u6b3a\u9a97\u539f\u7406
\u5047\u8bbe\u4e00\u4e2a\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u7f51\u5185\u6709\u4e09\u53f0\u4e3b\u673a\uff0c\u5206\u522b\u4e3a\u4e3b\u673aA\u3001B\u3001C\u3002\u4e3b\u673a\u8be6\u7ec6\u4fe1\u606f\u5982\u4e0b\u63cf\u8ff0\uff1a
A\u7684\u5730\u5740\u4e3a\uff1aIP\uff1a192.168.10.1 MAC: AA-AA-AA-AA-AA-AA
B\u7684\u5730\u5740\u4e3a\uff1aIP\uff1a192.168.10.2 MAC: BB-BB-BB-BB-BB-BB
C\u7684\u5730\u5740\u4e3a\uff1aIP\uff1a192.168.10.3 MAC: CC-CC-CC-CC-CC-CC
\u6b63\u5e38\u60c5\u51b5\u4e0bA\u548cC\u4e4b\u95f4\u8fdb\u884c\u901a\u8baf\uff0c\u4f46\u662f\u6b64\u65f6B\u5411A\u53d1\u9001\u4e00\u4e2a\u81ea\u5df1\u4f2a\u9020\u7684ARP\u5e94\u7b54\uff0c\u800c\u8fd9\u4e2a\u5e94\u7b54\u4e2d\u7684\u6570\u636e\u4e3a\u53d1\u9001\u65b9IP\u5730\u5740\u662f192.168.10.3\uff08C\u7684IP\u5730\u5740\uff09\uff0cMAC\u5730\u5740\u662fBB-BB-BB-BB-BB-BB\uff08C\u7684MAC\u5730\u5740\u672c\u6765\u5e94\u8be5\u662fCC-CC-CC-CC-CC-CC\uff0c\u8fd9\u91cc\u88ab\u4f2a\u9020\u4e86\uff09\u3002\u5f53A\u63a5\u6536\u5230B\u4f2a\u9020\u7684ARP\u5e94\u7b54\uff0c\u5c31\u4f1a\u66f4\u65b0\u672c\u5730\u7684ARP\u7f13\u5b58\uff08A\u88ab\u6b3a\u9a97\u4e86\uff09\uff0c\u8fd9\u65f6B\u5c31\u4f2a\u88c5\u6210C\u4e86\u3002\u540c\u65f6\uff0cB\u540c\u6837\u5411C\u53d1\u9001\u4e00\u4e2aARP\u5e94\u7b54\uff0c\u5e94\u7b54\u5305\u4e2d\u53d1\u9001\u65b9IP\u5730\u5740\u56db192.168.10.1\uff08A\u7684IP\u5730\u5740\uff09\uff0cMAC\u5730\u5740\u662fBB-BB-BB-BB-BB-BB\uff08A\u7684MAC\u5730\u5740\u672c\u6765\u5e94\u8be5\u662fAA-AA-AA-AA-AA-AA\uff09\uff0c\u5f53C\u6536\u5230B\u4f2a\u9020\u7684ARP\u5e94\u7b54\uff0c\u4e5f\u4f1a\u66f4\u65b0\u672c\u5730ARP\u7f13\u5b58\uff08C\u4e5f\u88ab\u6b3a\u9a97\u4e86\uff09\uff0c\u8fd9\u65f6B\u5c31\u4f2a\u88c5\u6210\u4e86A\u3002\u8fd9\u6837\u4e3b\u673aA\u548cC\u90fd\u88ab\u4e3b\u673aB\u6b3a\u9a97\uff0cA\u548cC\u4e4b\u95f4\u901a\u8baf\u7684\u6570\u636e\u90fd\u7ecf\u8fc7\u4e86B\u3002\u4e3b\u673aB\u5b8c\u5168\u53ef\u4ee5\u77e5\u9053\u4ed6\u4eec\u4e4b\u95f4\u8bf4\u7684\u4ec0\u4e48\uff1a\uff09\u3002\u8fd9\u5c31\u662f\u5178\u578b\u7684ARP\u6b3a\u9a97\u8fc7\u7a0b\u3002
\u6ce8\u610f\uff1a\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cARP\u6b3a\u9a97\u7684\u67d0\u4e00\u65b9\u5e94\u8be5\u662f\u7f51\u5173\u3002
2.2.2\u4e24\u79cd\u60c5\u51b5
ARP\u6b3a\u9a97\u5b58\u5728\u4e24\u79cd\u60c5\u51b5\uff1a\u4e00\u79cd\u662f\u6b3a\u9a97\u4e3b\u673a\u4f5c\u4e3a\u201c\u4e2d\u95f4\u4eba\u201d\uff0c\u88ab\u6b3a\u9a97\u4e3b\u673a\u7684\u6570\u636e\u90fd\u7ecf\u8fc7\u5b83\u4e2d\u8f6c\u4e00\u6b21\uff0c\u8fd9\u6837\u6b3a\u9a97\u4e3b\u673a\u53ef\u4ee5\u7a83\u53d6\u5230\u88ab\u5b83\u6b3a\u9a97\u7684\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u8baf\u6570\u636e\uff1b\u53e6\u4e00\u79cd\u8ba9\u88ab\u6b3a\u9a97\u4e3b\u673a\u76f4\u63a5\u65ad\u7f51\u3002
\u25c6\u7b2c\u4e00\u79cd\uff1a\u7a83\u53d6\u6570\u636e\uff08\u55c5\u63a2\uff09
\u901a\u8baf\u6a21\u5f0f\uff1a
\u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u8bf7\u6c42 -> \u5e94\u7b54 -> \u5e94\u7b54 ->\u8bf7\u6c42->\u5e94\u7b54...
\u63cf\u8ff0\uff1a
\u8fd9\u79cd\u60c5\u51b5\u5c31\u5c5e\u4e8e\u6211\u4eec\u4e0a\u9762\u6240\u8bf4\u7684\u5178\u578b\u7684ARP\u6b3a\u9a97\uff0c\u6b3a\u9a97\u4e3b\u673a\u5411\u88ab\u6b3a\u9a97\u4e3b\u673a\u53d1\u9001\u5927\u91cf\u4f2a\u9020\u7684ARP\u5e94\u7b54\u5305\u8fdb\u884c\u6b3a\u9a97\uff0c\u5f53\u901a\u8baf\u53cc\u65b9\u88ab\u6b3a\u9a97\u6210\u529f\u540e\uff0c\u81ea\u5df1\u4f5c\u4e3a\u4e86\u4e00\u4e2a\u201c\u4e2d\u95f4\u4eba\u201c\u7684\u8eab\u4efd\u3002\u6b64\u65f6\u88ab\u6b3a\u9a97\u7684\u4e3b\u673a\u53cc\u65b9\u8fd8\u80fd\u6b63\u5e38\u901a\u8baf\uff0c\u53ea\u4e0d\u8fc7\u5728\u901a\u8baf\u8fc7\u7a0b\u4e2d\u88ab\u6b3a\u9a97\u8005\u201c\u7a83\u542c\u201d\u4e86\u3002
\u51fa\u73b0\u539f\u56e0\uff08\u53ef\u80fd\uff09\uff1a
\u6728\u9a6c\u75c5\u6bd2
\u55c5\u63a2
\u4eba\u4e3a\u6b3a\u9a97
\u25c6\u7b2c\u4e8c\u79cd\uff1a\u5bfc\u81f4\u65ad\u7f51
\u901a\u8baf\u6a21\u5f0f\uff1a
\u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u5e94\u7b54 -> \u8bf7\u6c42\u2026
\u63cf\u8ff0\uff1a
\u8fd9\u7c7b\u60c5\u51b5\u5c31\u662f\u5728ARP\u6b3a\u9a97\u8fc7\u7a0b\u4e2d\uff0c\u6b3a\u9a97\u8005\u53ea\u6b3a\u9a97\u4e86\u5176\u4e2d\u4e00\u65b9\uff0c\u5982B\u6b3a\u9a97\u4e86A\uff0c\u4f46\u662f\u540c\u65f6B\u6ca1\u6709\u5bf9C\u8fdb\u884c\u6b3a\u9a97\uff0c\u8fd9\u6837A\u5b9e\u8d28\u4e0a\u662f\u5728\u548cB\u901a\u8baf\uff0c\u6240\u4ee5A\u5c31\u4e0d\u80fd\u548cC\u901a\u8baf\u4e86\uff0c\u53e6\u5916\u4e00\u79cd\u60c5\u51b5\u8fd8\u53ef\u80fd\u5c31\u662f\u6b3a\u9a97\u8005\u4f2a\u9020\u4e00\u4e2a\u4e0d\u5b58\u5728\u5730\u5740\u8fdb\u884c\u6b3a\u9a97\u3002
\u5bf9\u4e8e\u4f2a\u9020\u5730\u5740\u8fdb\u884c\u7684\u6b3a\u9a97\uff0c\u5728\u6392\u67e5\u4e0a\u6bd4\u8f83\u6709\u96be\u5ea6\uff0c\u8fd9\u91cc\u6700\u597d\u662f\u501f\u7528TAP\u8bbe\u5907\uff08\u5475\u5475\uff0c\u8fd9\u4e2a\u4e1c\u4e1c\u597d\u50cf\u6709\u70b9\u8d35\u52d2\uff09\uff0c\u5206\u522b\u6355\u83b7\u5355\u5411\u6570\u636e\u6d41\u8fdb\u884c\u5206\u6790\uff01
\u51fa\u73b0\u539f\u56e0\uff08\u53ef\u80fd\uff09\uff1a
\u6728\u9a6c\u75c5\u6bd2
\u4eba\u4e3a\u7834\u574f
\u4e00\u4e9b\u7f51\u7ba1\u8f6f\u4ef6\u7684\u63a7\u5236\u529f\u80fd
\u4e09\u3001\u5e38\u7528\u7684\u9632\u62a4\u65b9\u6cd5
\u641c\u7d22\u7f51\u4e0a\uff0c\u76ee\u524d\u5bf9\u4e8eARP\u653b\u51fb\u9632\u62a4\u95ee\u9898\u51fa\u73b0\u6700\u591a\u662f\u7ed1\u5b9aIP\u548cMAC\u548c\u4f7f\u7528ARP\u9632\u62a4\u8f6f\u4ef6\uff0c\u4e5f\u51fa\u73b0\u4e86\u5177\u6709ARP\u9632\u62a4\u529f\u80fd\u7684\u8def\u7531\u5668\u3002\u5475\u5475\uff0c\u6211\u4eec\u6765\u4e86\u89e3\u4e0b\u8fd9\u4e09\u79cd\u65b9\u6cd5\u3002
3.1\u9759\u6001\u7ed1\u5b9a
\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5c31\u662f\u505aIP\u548cMAC\u9759\u6001\u7ed1\u5b9a\uff0c\u5728\u7f51\u5185\u628a\u4e3b\u673a\u548c\u7f51\u5173\u90fd\u505aIP\u548cMAC\u7ed1\u5b9a\u3002
\u6b3a\u9a97\u662f\u901a\u8fc7ARP\u7684\u52a8\u6001\u5b9e\u65f6\u7684\u89c4\u5219\u6b3a\u9a97\u5185\u7f51\u673a\u5668\uff0c\u6240\u4ee5\u6211\u4eec\u628aARP\u5168\u90e8\u8bbe\u7f6e\u4e3a\u9759\u6001\u53ef\u4ee5\u89e3\u51b3\u5bf9\u5185\u7f51PC\u7684\u6b3a\u9a97\uff0c\u540c\u65f6\u5728\u7f51\u5173\u4e5f\u8981\u8fdb\u884cIP\u548cMAC\u7684\u9759\u6001\u7ed1\u5b9a\uff0c\u8fd9\u6837\u53cc\u5411\u7ed1\u5b9a\u624d\u6bd4\u8f83\u4fdd\u9669\u3002
\u65b9\u6cd5\uff1a
\u5bf9\u6bcf\u53f0\u4e3b\u673a\u8fdb\u884cIP\u548cMAC\u5730\u5740\u9759\u6001\u7ed1\u5b9a\u3002
\u901a\u8fc7\u547d\u4ee4\uff0carp -s\u53ef\u4ee5\u5b9e\u73b0 \u201carp \u2013s IP MAC\u5730\u5740 \u201d\u3002
\u4f8b\u5982\uff1a\u201carp \u2013s192.168.10.1 AA-AA-AA-AA-AA-AA\u201d\u3002
\u5982\u679c\u8bbe\u7f6e\u6210\u529f\u4f1a\u5728PC\u4e0a\u9762\u901a\u8fc7\u6267\u884carp -a \u53ef\u4ee5\u770b\u5230\u76f8\u5173\u7684\u63d0\u793a\uff1a Internet Address Physical Address Type
192.168.10.1AA-AA-AA-AA-AA-AA static(\u9759\u6001)
\u4e00\u822c\u4e0d\u7ed1\u5b9a,\u5728\u52a8\u6001\u7684\u60c5\u51b5\u4e0b\uff1a
Internet AddressPhysical AddressType
192.168.10.1 AA-AA-AA-AA-AA-AA dynamic(\u52a8\u6001)
\u8bf4\u660e\uff1a\u5bf9\u4e8e\u7f51\u7edc\u4e2d\u6709\u5f88\u591a\u4e3b\u673a\uff0c500\u53f0\uff0c1000\u53f0...\uff0c\u5982\u679c\u6211\u4eec\u8fd9\u6837\u6bcf\u4e00\u53f0\u90fd\u53bb\u505a\u9759\u6001\u7ed1\u5b9a\uff0c\u5de5\u4f5c\u91cf\u662f\u975e\u5e38\u5927\u7684\u3002\u3002\u3002\u3002\uff0c\u8fd9\u79cd\u9759\u6001\u7ed1\u5b9a\uff0c\u5728\u7535\u8111\u6bcf\u6b21\u91cd\u8d77\u540e\uff0c\u90fd\u5fc5\u987b\u91cd\u65b0\u5728\u7ed1\u5b9a\uff0c\u867d\u7136\u4e5f\u53ef\u4ee5\u505a\u4e00\u4e2a\u6279\u5904\u7406\u6587\u4ef6\uff0c\u4f46\u662f\u8fd8\u662f\u6bd4\u8f83\u9ebb\u70e6\u7684\uff01
3.2\u4f7f\u7528ARP\u9632\u62a4\u8f6f\u4ef6
\u76ee\u524d\u5173\u4e8eARP\u7c7b\u7684\u9632\u62a4\u8f6f\u4ef6\u51fa\u7684\u6bd4\u8f83\u591a\u4e86\uff0c\u5927\u5bb6\u4f7f\u7528\u6bd4\u8f83\u5e38\u7528\u7684ARP\u5de5\u5177\u4e3b\u8981\u662f\u6b23\u5411ARP\u5de5\u5177\uff0cAntiarp\u7b49\u3002\u5b83\u4eec\u9664\u4e86\u672c\u8eab\u6765\u68c0\u6d4b\u51faARP\u653b\u51fb\u5916\uff0c\u9632\u62a4\u7684\u5de5\u4f5c\u539f\u7406\u662f\u4e00\u5b9a\u9891\u7387\u5411\u7f51\u7edc\u5e7f\u64ad\u6b63\u786e\u7684ARP\u4fe1\u606f\u3002\u6211\u4eec\u8fd8\u662f\u6765\u7b80\u5355\u8bf4\u4e0b\u8fd9\u4e24\u4e2a\u5c0f\u5de5\u5177\u3002
3.2.1\u6b23\u5411ARP\u5de5\u5177
\u4ffa\u4f7f\u7528\u4e86\u8be5\u5de5\u5177\uff0c\u5b83\u67095\u4e2a\u529f\u80fd\uff1a
A. IP/MAC\u6e05\u5355
\u9009\u62e9\u7f51\u5361\u3002\u5982\u679c\u662f\u5355\u7f51\u5361\u4e0d\u9700\u8981\u8bbe\u7f6e\u3002\u5982\u679c\u662f\u591a\u7f51\u5361\u9700\u8981\u8bbe\u7f6e\u8fde\u63a5\u5185\u7f51\u7684\u90a3\u5757\u7f51\u5361\u3002
IP/MAC\u626b\u63cf\u3002\u8fd9\u91cc\u4f1a\u626b\u63cf\u76ee\u524d\u7f51\u7edc\u4e2d\u6240\u6709\u7684\u673a\u5668\u7684IP\u4e0eMAC\u5730\u5740\u3002\u8bf7\u5728\u5185\u7f51\u8fd0\u884c\u6b63\u5e38\u65f6\u626b\u63cf\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u8868\u683c\u5c06\u4f5c\u4e3a\u5bf9\u4e4b\u540eARP\u7684\u53c2\u7167\u3002
\u4e4b\u540e\u7684\u529f\u80fd\u90fd\u9700\u8981\u8fd9\u4e2a\u8868\u683c\u7684\u652f\u6301\uff0c\u5982\u679c\u51fa\u73b0\u63d0\u793a\u65e0\u6cd5\u83b7\u53d6IP\u6216MAC\u65f6\uff0c\u5c31\u8bf4\u660e\u8fd9\u91cc\u7684\u8868\u683c\u91cc\u9762\u6ca1\u6709\u76f8\u5e94\u7684\u6570\u636e\u3002
B.ARP\u6b3a\u9a97\u68c0\u6d4b
\u8fd9\u4e2a\u529f\u80fd\u4f1a\u4e00\u76f4\u68c0\u6d4b\u5185\u7f51\u662f\u5426\u6709PC\u5192\u5145\u8868\u683c\u5185\u7684IP\u3002\u4f60\u53ef\u4ee5\u628a\u4e3b\u8981\u7684IP\u8bbe\u5230\u68c0\u6d4b\u8868\u683c\u91cc\u9762\uff0c\u4f8b\u5982\uff0c\u8def\u7531\u5668\uff0c\u7535\u5f71\u670d\u52a1\u5668\uff0c\u7b49\u9700\u8981\u5185\u7f51\u673a\u5668\u8bbf\u95ee\u7684\u673a\u5668IP\u3002
(\u8865\u5145)\u201cARP\u6b3a\u9a97\u8bb0\u5f55\u201d\u8868\u5982\u4f55\u7406\u89e3\uff1a
\u201cTime\u201d\uff1a\u53d1\u73b0\u95ee\u9898\u65f6\u7684\u65f6\u95f4\uff1b
\u201csender\u201d\uff1a\u53d1\u9001\u6b3a\u9a97\u4fe1\u606f\u7684IP\u6216MAC\uff1b
\u201cRepeat\u201d\uff1a\u6b3a\u8bc8\u4fe1\u606f\u53d1\u9001\u7684\u6b21\u6570\uff1b
\u201cARP info\u201d\uff1a\u662f\u6307\u53d1\u9001\u6b3a\u9a97\u4fe1\u606f\u7684\u5177\u4f53\u5185\u5bb9.\u5982\u4e0b\u9762\u4f8b\u5b50\uff1a
timesenderRepeatARP info 22:22:22192.168.1.22 1433192.168.1.1 is at 00:0e:03:22:02:e8
\u8fd9\u6761\u4fe1\u606f\u7684\u610f\u601d\u662f\uff1a\u572822:22:22\u7684\u65f6\u95f4,\u68c0\u6d4b\u5230\u7531192.168.1.22\u53d1\u51fa\u7684\u6b3a\u9a97\u4fe1\u606f\uff0c\u5df2\u7ecf\u53d1\u9001\u4e861433\u6b21\uff0c\u4ed6\u53d1\u9001\u7684\u6b3a\u9a97\u4fe1\u606f\u7684\u5185\u5bb9\u662f\uff1a192.168.1.1\u7684MAC\u5730\u5740\u662f00:0e:03:22:02:e8\u3002
\u6253\u5f00\u68c0\u6d4b\u529f\u80fd\uff0c\u5982\u679c\u51fa\u73b0\u9488\u5bf9\u8868\u5185IP\u7684\u6b3a\u9a97\uff0c\u4f1a\u51fa\u73b0\u63d0\u793a\u3002\u53ef\u4ee5\u6309\u7167\u63d0\u793a\u67e5\u5230\u5185\u7f51\u7684ARP\u6b3a\u9a97\u7684\u6839\u6e90\u3002\u63d0\u793a\u4e00\u53e5\uff0c\u4efb\u4f55\u673a\u5668\u90fd\u53ef\u4ee5\u5192\u5145\u5176\u4ed6\u673a\u5668\u53d1\u9001IP\u4e0eMAC\uff0c\u6240\u4ee5\u5373\u4f7f\u63d0\u793a\u51fa\u67d0\u4e2aIP\u6216MAC\u5728\u53d1\u9001\u6b3a\u9a97\u4fe1\u606f\uff0c\u4e5f\u672a\u5fc5\u662f100\uff05\u7684\u51c6\u786e\u3002\u6240\u6709\u8bf7\u4e0d\u8981\u4ee5\u66b4\u529b\u89e3\u51b3\u67d0\u4e9b\u95ee\u9898\u3002
C.\u4e3b\u52a8\u7ef4\u62a4
\u8fd9\u4e2a\u529f\u80fd\u53ef\u4ee5\u76f4\u63a5\u89e3\u51b3ARP\u6b3a\u9a97\u7684\u6389\u7ebf\u95ee\u9898\uff0c\u4f46\u662f\u5e76\u4e0d\u662f\u7406\u60f3\u65b9\u6cd5\u3002\u4ed6\u7684\u539f\u7406\u5c31\u5728\u7f51\u7edc\u5185\u4e0d\u505c\u7684\u5e7f\u64ad\u5236\u5b9a\u7684IP\u7684\u6b63\u786e\u7684MAC\u5730\u5740\u3002
\u201c\u5236\u5b9a\u7ef4\u62a4\u5bf9\u8c61\u201d\u7684\u8868\u683c\u91cc\u9762\u5c31\u662f\u8bbe\u7f6e\u9700\u8981\u4fdd\u62a4\u7684IP\u3002\u53d1\u5305\u9891\u7387\u5c31\u662f\u6bcf\u79d2\u53d1\u9001\u591a\u5c11\u4e2a\u6b63\u786e\u7684\u5305\u7ed9\u7f51\u7edc\u5185\u6240\u6709\u673a\u5668\u3002\u5f3a\u70c8\u5efa\u8bae\u5c3d\u91cf\u5c11\u7684\u5e7f\u64adIP\uff0c\u5c3d\u91cf\u5c11\u7684\u5e7f\u64ad\u9891\u7387\u3002\u4e00\u822c\u8bbe\u7f6e1\u6b21\u5c31\u53ef\u4ee5\uff0c\u5982\u679c\u6ca1\u6709\u7ed1\u5b9aIP\u7684\u60c5\u51b5\u4e0b\uff0c\u51fa\u73b0ARP\u6b3a\u9a97\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u523050\uff0d100\u6b21\uff0c\u5982\u679c\u8fd8\u6709\u6389\u7ebf\u53ef\u4ee5\u8bbe\u7f6e\u66f4\u9ad8\uff0c\u5373\u53ef\u4ee5\u5b9e\u73b0\u5feb\u901f\u89e3\u51b3ARP\u6b3a\u9a97\u7684\u95ee\u9898\u3002\u4f46\u662f\u60f3\u771f\u6b63\u89e3\u51b3ARP\u95ee\u9898\uff0c\u8fd8\u662f\u8bf7\u53c2\u7167\u4e0a\u9762\u7ed1\u5b9a\u65b9\u6cd5\u3002
D. \u6b23\u5411\u8def\u7531\u5668\u65e5\u5fd7
\u6536\u96c6\u6b23\u5411\u8def\u7531\u5668\u7684\u7cfb\u7edf\u65e5\u5fd7\uff0c\u7b49\u529f\u80fd\u3002
E.\u6293\u5305
\u7c7b\u4f3c\u4e8e\u7f51\u7edc\u5206\u6790\u8f6f\u4ef6\u7684\u6293\u5305\uff0c\u4fdd\u5b58\u683c\u5f0f\u662f.cap\u3002
3.2.1Antiarp
\u8fd9\u4e2a\u8f6f\u4ef6\u754c\u9762\u6bd4\u8f83\u7b80\u5355\uff0c\u4ee5\u4e0b\u4e3a\u6211\u6536\u96c6\u8be5\u8f6f\u4ef6\u7684\u4f7f\u7528\u65b9\u6cd5\u3002
A.\u586b\u5165\u7f51\u5173IP\u5730\u5740\uff0c\u70b9\u51fb\u3014\u83b7\u53d6\u7f51\u5173\u5730\u5740\u3015\u5c06\u4f1a\u663e\u793a\u51fa\u7f51\u5173\u7684MAC\u5730\u5740\u3002\u70b9\u51fb[\u81ea\u52a8\u9632\u62a4]\u5373\u53ef\u4fdd\u62a4\u5f53\u524d\u7f51\u5361\u4e0e\u8be5\u7f51\u5173\u7684\u901a\u4fe1\u4e0d\u4f1a\u88ab\u7b2c\u4e09\u65b9\u76d1\u542c\u3002\u6ce8\u610f\uff1a\u5982\u51fa\u73b0ARP\u6b3a\u9a97\u63d0\u793a\uff0c\u8fd9\u8bf4\u660e\u653b\u51fb\u8005\u53d1\u9001\u4e86ARP\u6b3a\u9a97\u6570\u636e\u5305\u6765\u83b7\u53d6\u7f51\u5361\u7684\u6570\u636e\u5305\uff0c\u5982\u679c\u60a8\u60f3\u8ffd\u8e2a\u653b\u51fb\u6765\u6e90\u8bf7\u8bb0\u4f4f\u653b\u51fb\u8005\u7684MAC\u5730\u5740\uff0c\u5229\u7528MAC\u5730\u5740\u626b\u63cf\u5668\u53ef\u4ee5\u627e\u51faIP \u5bf9\u5e94\u7684MAC\u5730\u5740.
B.IP\u5730\u5740\u51b2\u7a81
\u5982\u9891\u7e41\u7684\u51fa\u73b0IP\u5730\u5740\u51b2\u7a81\uff0c\u8fd9\u8bf4\u660e\u653b\u51fb\u8005\u9891\u7e41\u53d1\u9001ARP\u6b3a\u9a97\u6570\u636e\u5305\uff0c\u624d\u4f1a\u51fa\u73b0IP\u51b2\u7a81\u7684\u8b66\u544a\uff0c\u5229\u7528Anti ARP Sniffer\u53ef\u4ee5\u9632\u6b62\u6b64\u7c7b\u653b\u51fb\u3002
C.\u60a8\u9700\u8981\u77e5\u9053\u51b2\u7a81\u7684MAC\u5730\u5740\uff0cWindows\u4f1a\u8bb0\u5f55\u8fd9\u4e9b\u9519\u8bef\u3002\u67e5\u770b\u5177\u4f53\u65b9\u6cd5\u5982\u4e0b\uff1a
\u53f3\u51fb[\u6211\u7684\u7535\u8111]--[\u7ba1\u7406]--\u70b9\u51fb[\u4e8b\u4ef6\u67e5\u770b\u5668]--\u70b9\u51fb[\u7cfb\u7edf]--\u67e5\u770b\u6765\u6e90\u4e3a[TcpIP]---\u53cc\u51fb\u4e8b\u4ef6\u53ef\u4ee5\u770b\u5230\u663e\u793a\u5730\u5740\u53d1\u751f\u51b2\u7a81\uff0c\u5e76\u8bb0\u5f55\u4e86\u8be5MAC\u5730\u5740\uff0c\u8bf7\u590d\u5236\u8be5MAC\u5730\u5740\u5e76\u586b\u5165Anti ARP Sniffer\u7684\u672c\u5730MAC\u5730\u5740\u8f93\u5165\u6846\u4e2d(\u8bf7\u6ce8\u610f\u5c06:\u8f6c\u6362\u4e3a-)\uff0c\u8f93\u5165\u5b8c\u6210\u4e4b\u540e\u70b9\u51fb[\u9632\u62a4\u5730\u5740\u51b2\u7a81]\uff0c\u4e3a\u4e86\u4f7fMAC\u5730\u5740\u751f\u6548\u8bf7\u7981\u7528\u672c\u5730\u7f51\u5361\u7136\u540e\u518d\u542f\u7528\u7f51\u5361\uff0c\u5728CMD\u547d\u4ee4\u884c\u4e2d\u8f93\u5165Ipconfig /all\uff0c\u67e5\u770b\u5f53\u524dMAC\u5730\u5740\u662f\u5426\u4e0e\u672c\u5730MAC\u5730\u5740\u8f93\u5165\u6846\u4e2d\u7684MAC\u5730\u5740\u76f8\u7b26\uff0c\u5982\u679c\u66f4\u6539\u5931\u8d25\u8bf7\u4e0e\u6211\u8054\u7cfb\u3002\u5982\u679c\u6210\u529f\u5c06\u4e0d\u518d\u4f1a\u663e\u793a\u5730\u5740\u51b2\u7a81\u3002
\u6ce8\u610f:\u5982\u679c\u60a8\u60f3\u6062\u590d\u9ed8\u8ba4MAC\u5730\u5740,\u8bf7\u70b9\u51fb[\u6062\u590d\u9ed8\u8ba4],\u4e3a\u4e86\u4f7fMAC\u5730\u5740\u751f\u6548\u8bf7\u7981\u7528\u672c\u5730\u7f51\u5361\u7136\u540e\u518d\u542f\u7528\u7f51\u5361\u3002
3.3\u5177\u6709ARP\u9632\u62a4\u529f\u80fd\u7684\u8def\u7531\u5668
\u8fd9\u7c7b\u8def\u7531\u5668\u4ee5\u524d\u542c\u8bf4\u7684\u5f88\u5c11\uff0c\u5bf9\u4e8e\u8fd9\u7c7b\u8def\u7531\u5668\u4e2d\u63d0\u5230\u7684ARP\u9632\u62a4\u529f\u80fd\uff0c\u5176\u5b9e\u5b83\u7684\u539f\u7406\u5c31\u662f\u5b9a\u671f\u7684\u53d1\u9001\u81ea\u5df1\u6b63\u786e\u7684ARP\u4fe1\u606f\u3002\u4f46\u662f\u8def\u7531\u5668\u7684\u8fd9\u79cd\u529f\u80fd\u5bf9\u4e8e\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u653b\u51fb\uff0c\u662f\u4e0d\u80fd\u89e3\u51b3\u7684\u3002
ARP\u7684\u6700\u5e38\u89c1\u7684\u7279\u5f81\u5c31\u662f\u6389\u7ebf\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u5904\u7406\u4e00\u5b9a\u65f6\u95f4\u5185\u53ef\u4ee5\u56de\u590d\u6b63\u5e38\u4e0a\u7f51\uff0c\u56e0\u4e3aARP\u6b3a\u9a97\u662f\u6709\u8001\u5316\u65f6\u95f4\u7684\uff0c\u8fc7\u4e86\u8001\u5316\u65f6\u95f4\u5c31\u4f1a\u81ea\u52a8\u7684\u56de\u590d\u6b63\u5e38\u3002\u73b0\u5728\u5927\u591a\u6570\u8def\u7531\u5668\u90fd\u4f1a\u5728\u5f88\u77ed\u65f6\u95f4\u5185\u4e0d\u505c\u5e7f\u64ad\u81ea\u5df1\u7684\u6b63\u786eARP\u4fe1\u606f\uff0c\u4f7f\u53d7\u9a97\u7684\u4e3b\u673a\u56de\u590d\u6b63\u5e38\u3002\u4f46\u662f\u5982\u679c\u51fa\u73b0\u653b\u51fb\u6027ARP\u6b3a\u9a97(\u5176\u5b9e\u5c31\u662f\u65f6\u95f4\u5f88\u77ed\u7684\u91cf\u5f88\u5927\u7684\u6b3a\u9a97ARP\uff0c1\u79d2\u6709\u4e2a\u51e0\u767e\u4e0a\u5343\u7684)\uff0c\u5b83\u662f\u4e0d\u65ad\u7684\u53d1\u8d77ARP\u6b3a\u9a97\u5305\u6765\u963b\u6b62\u5185\u7f51\u673a\u5668\u4e0a\u7f51\uff0c\u5373\u4f7f\u8def\u7531\u5668\u4e0d\u65ad\u5e7f\u64ad\u6b63\u786e\u7684\u5305\u4e5f\u4f1a\u88ab\u4ed6\u5927\u91cf\u7684\u9519\u8bef\u4fe1\u606f\u7ed9\u6df9\u6ca1\u3002
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ARP\u662f\u7528\u6765\u628a\u4e00\u4e2a\u5df2\u77e5\u7684IP\u5730\u5740\u89e3\u6790\u6210MAC\u5730\u5740,\u4ee5\u4fbf\u53ef\u4ee5\u5728MAC\u5c42\u8fdb\u884c\u901a\u4fe1,\u4e3a\u4e86\u786e\u5b9a\u76ee\u6807\u7684MAC\u5730\u5740,\u9996\u5148\u9700\u8981\u67e5\u627eARP\u7f13\u5b58\u8868.\u5982\u679c\u8981\u67e5\u627e\u7684MAC\u5730\u5740\u5728\u8868\u4e2d\u6ca1\u6709,ARP\u5c31\u4f1a\u53d1\u9001\u4e00\u4e2a\u5e7f\u64ad,\u4ece\u800c\u53d1\u73b0\u76ee\u7684MAC\u5730\u5740!
正确交换机在刚启动时mac地址表是空的，通过学习数据帧的源mac地址记录主机mac地址和对应的端口，因此，如果主机从不发送数据（此处视为也不回应arp泛洪）那么交换机就不会记录该主机的mac地址。
绛旓細姝ｇ‘ 浜ゆ崲鏈哄湪鍒氬惎鍔ㄦ椂mac鍦板潃琛ㄦ槸绌虹殑锛岄氳繃瀛︿範鏁版嵁甯х殑婧恗ac鍦板潃璁板綍涓绘満mac鍦板潃鍜屽搴旂殑绔彛锛屽洜姝わ紝濡傛灉涓绘満浠庝笉鍙戦佹暟鎹紙姝ゅ瑙嗕负涔熶笉鍥炲簲arp娉涙椽锛夐偅涔堜氦鎹㈡満灏变笉浼氳褰曡涓绘満鐨刴ac鍦板潃銆
绛旓細灏嗕細琚彂閫佸埌鏈湴缃戠粶鐨勯粯璁ょ綉鍏炽傛牴鎹煡璇㈢煡涔庢樉绀猴紝濡傛灉鐩爣涓绘満涓嶅湪鏈湴缃戠粶涓紝ARP璇锋眰灏嗕細琚彂閫佸埌鏈湴缃戠粶鐨勯粯璁ょ綉鍏炽侫RP鏄竴绉嶇敤浜庡皢IP鍦板潃瑙ｆ瀽涓篗AC鍦板潃鐨勭綉缁鍗忚銆傚湪鏈湴缃戠粶涓紝褰涓鍙颁富鏈闇瑕佸彂閫佹暟鎹寘缁欏彟涓鍙颁富鏈烘椂锛屽畠棣栧厛闇瑕佺煡閬撶洰鏍囦富鏈虹殑MAC鍦板潃銆傚鏋滅洰鏍囦富鏈轰笉鍦ㄦ湰鍦扮綉缁滀腑锛岄偅涔...
绛旓細鍙戦佸埌鏈湴缃戝叧銆傛牴鎹煡璇㈢櫨搴︾櫨绉戜俊鎭樉绀猴紝ARP鏄竴绉嶅皢IP鍦板潃瑙ｆ瀽涓哄搴擬AC鍦板潃鐨鍗忚锛岀洰鏍涓绘満涓嶅湪鏈湴缃戠粶涓紝ARP锛堝湴鍧瑙ｆ瀽鍗忚锛夎姹傚皢浼氳鍙戦佸埌鏈湴缃戠粶鐨勭綉鍏炽
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绛旓細ARP鍗忚鐨勫熀鏈濇兂鏄氳繃骞挎挱璇㈤棶銆佸崟鎾洖搴旂殑鏂瑰紡锛屽皢缃戠粶灞傦紙IP鍦板潃锛夌殑鍦板潃瑙ｆ瀽涓洪摼璺眰锛圡AC鍦板潃锛夌殑鍦板潃銆傚叾宸ヤ綔鍘熺悊鏄紝褰撲富鏈洪渶瑕佺煡閬撳彟涓鍙颁富鏈鐨凪AC鍦板潃鏃讹紝瀹冧細鍙戦佷竴涓寘鍚洰鏍嘔P鍦板潃鐨凙RP璇锋眰骞挎挱鍒扮綉缁滀笂锛岀洰鏍囦富鏈烘敹鍒拌姹傚悗锛屼細鍙戦佷竴涓寘鍚叾MAC鍦板潃鐨凙RP鍥炲簲缁欒姹備富鏈恒傝缁 ARP鍗忚鏄...
绛旓細ARP瀵诲潃杩囩▼锛氫竴銆佸厛浠庣畝鍗曠殑鍦烘櫙寮濮嬶紝鍚屼竴涓眬鍩熺綉鍐呬袱鍙颁富鏈瑕侀氫俊銆傚叧娉ㄥ鍧杩囩▼锛氫簩銆佽嫢瑕侀氫俊鐨勪富鏈猴紝涓嶅湪鍚屼竴灞鍩熺綉銆傚彟澶栵紝褰撳彂閫佷富鏈哄拰鐩殑涓绘満涓嶅湪鍚屼竴涓眬鍩熺綉涓椂锛屽嵆渚跨煡閬撳鏂圭殑MAC鍦板潃锛屼袱鑰呬篃涓嶈兘鐩存帴閫氫俊锛屽繀椤荤粡杩囪矾鐢辫浆鍙戞墠鍙互銆傛墍浠ユ鏃讹紝鍙戦佷富鏈洪氳繃ARP鍗忚鑾峰緱鐨勫皢涓嶆槸鐩殑涓绘満...
绛旓細ARP锛圓ddress Resolution Protocol锛鍦板潃瑙ｆ瀽鍗忚锛夋槸灏咺P鍦板潃瑙ｆ瀽涓轰互澶綉MAC鍦板潃锛堟垨绉扮墿鐞嗗湴鍧锛夌殑鍗忚銆傚湪灞鍩熺綉涓紝褰涓绘満鎴栧叾瀹冪綉缁滆澶囨湁鏁版嵁瑕佸彂閫佺粰鍙︿竴涓富鏈烘垨璁惧鏃讹紝瀹冨繀椤荤煡閬撳鏂圭殑缃戠粶灞傚湴鍧锛堝嵆IP鍦板潃锛夈備絾鏄粎浠呮湁IP鍦板潃鏄笉澶熺殑锛屽洜涓篒P鏁版嵁鎶ユ枃蹇呴』灏佽鎴愬抚鎵嶈兘閫氳繃鐗╃悊缃戠粶鍙戦侊紝鍥犳...
绛旓細锛2锛濡傛灉涓绘満A鍦ARP缂撳瓨涓病鏈夋壘鍒版槧灏勶紝涓绘満A灏嗗寘鍚洰鏍嘔P鍦板潃锛192.168.1.2锛夌殑ARP璇锋眰甯у箍鎾埌鏈湴缃戠粶涓婄殑鎵鏈変富鏈恒備富鏈篈鐨処P鍦板潃鍜孧AC鍦板潃閮藉寘鎷湪ARP璇锋眰涓傛湰鍦扮綉缁滀笂鐨勬瘡鍙颁富鏈閮芥帴鏀跺埌ARP璇锋眰骞朵笖妫鏌ユ槸鍚︿笌鑷繁鐨処P鍦板潃鍖归厤銆傚鏋滀富鏈哄彂鐜拌姹傜殑IP鍦板潃涓庤嚜宸辩殑IP鍦板潃涓嶅尮閰嶏紝瀹冨皢涓㈠純ARP...
绛旓細鎵璋撯滃湴鍧瑙ｆ瀽鈥濆氨鏄涓绘満鍦ㄥ彂閫佸抚鍓嶅皢鐩爣IP鍦板潃杞崲鎴愮洰鏍嘙AC鍦板潃鐨勮繃绋嬨ARP鍗忚鐨勫熀鏈姛鑳藉氨鏄氳繃鐩爣璁惧鐨処P鍦板潃锛屾煡璇㈢洰鏍囪澶囩殑MAC鍦板潃锛屼互淇濊瘉閫氫俊鐨勯『鍒╄繘琛屻備簩銆丄RP鍗忚鐨勫伐浣滃師鐞 鍦ㄦ瘡鍙板畨瑁呮湁TCP/IP鍗忚鐨勭數鑴戦噷閮芥湁涓涓狝RP缂撳瓨琛紝琛ㄩ噷鐨処P鍦板潃涓嶮AC鍦板潃鏄竴涓瀵瑰簲鐨勶紝濡傞檮琛ㄦ墍绀恒傞檮琛 ...
绛旓細ARP鍗忚锛圓ddress Resolution Protocol锛鍦板潃瑙ｆ瀽鍗忚锛夛細 鍦ㄤ互澶綉鍗忚涓瑙勫畾锛屽悓涓 灞鍩熺綉 涓殑涓鍙颁富鏈瑕佸拰鍙︿竴鍙颁富鏈鸿繘琛岀洿鎺ラ氫俊锛屽繀椤昏鐭ラ亾鐩爣涓绘満鐨凪AC鍦板潃銆傝屽湪TCP/IP鍗忚涓紝缃戠粶灞傚拰浼犺緭灞傚彧鍏冲績鐩爣涓绘満鐨処P鍦板潃銆傝繖灏卞鑷村湪浠ュお缃戜腑浣跨敤IP鍗忚鏃讹紝鏁版嵁閾捐矾灞傜殑浠ュお缃戝崗璁帴鍒颁笂灞侷P鍗忚...
