\u4e2a\u4eba\u7535\u8111\u4fee\u6539MTU\u65e0\u4efb\u4f55\u610f\u4e49<\/p>\n
1\u3001\u672c\u5730MTU\u503c\u5927\u4e8e\u7f51\u7edcMTU\u503c\u65f6\uff0c\u672c\u5730\u4f20\u8f93\u7684\u6570\u636e\u5305\u8fc7\u5927\u5bfc\u81f4\u7f51\u7edc\u4f1a\u62c6\u5305\u540e\u4f20\u8f93\uff0c\u4e0d\u4f46\u4ea7\u751f\u989d\u5916\u7684\u6570\u636e\u5305\uff0c\u800c\u4e14\u6d88\u8017\u4e86\u201c\u62c6\u5305\u3001\u7ec4\u5305\u201d\u7684\u65f6\u95f4\u3002<\/p>\n
2\u3001\u672c\u5730MTU\u503c\u5c0f\u4e8e\u7f51\u7edcMTU\u503c\u65f6\uff0c\u672c\u5730\u4f20\u8f93\u7684\u6570\u636e\u5305\u53ef\u4ee5\u76f4\u63a5\u4f20\u8f93\uff0c\u4f46\u662f\u672a\u80fd\u5b8c\u5168\u5229\u7528\u7f51\u7edc\u7ed9\u4e88\u7684\u6570\u636e\u5305\u4f20\u8f93\u5c3a\u5bf8\u7684\u4e0a\u9650\u503c\uff0c\u4f20\u8f93\u80fd\u529b\u672a\u5b8c\u5168\u53d1\u6325\u3002<\/p>\n
\u8fd9\u6837\u6211\u4eec\u5c31\u77e5\u9053\uff0c\u6240\u8c13\u5408\u7406\u7684\u8bbe\u7f6eMTU\u503c\uff0c\u5c31\u662f\u8ba9\u672c\u5730\u7684MTU\u503c\u4e0e\u7f51\u7edc\u7684MTU\u503c\u4e00\u81f4\uff0c\u65e2\u80fd\u5b8c\u6574\u53d1\u6325\u4f20\u8f93\u6027\u80fd\uff0c\u53c8\u4e0d\u8ba9\u6570\u636e\u5305\u62c6\u5206\u3002<\/p>\n
\u63a5\u4e0b\u6765\u6700\u91cd\u8981\u7684\u5c31\u662f\u8981\u627e\u51fa\u5bf9\u4e8e\u4f60\u7684\u7f51\u7edc\u73af\u5883\u6765\u8bf4MTU\u591a\u5c11\u624d\u662f\u5408\u7406\u7684\u3002<\/p>\n
\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n
1\u3001\u6309Win+R\u7ec4\u5408\u952e\uff0c\u8c03\u51fa\u201c\u8fd0\u884c\u201d\u83dc\u5355\uff0c\u8f93\u5165\u201ccmd\u201d\u7136\u540e\u56de\u8f66<\/p>\n
2\u3001\u5728\u51fa\u73b0\u7684\u201c\u547d\u4ee4\u63d0\u793a\u7b26\u201d\u7a97\u53e3\u4e2d\u8f93\u5165\u201cping -l 1472 -f www.baidu.com\u201d\u7136\u540e\u56de\u8f66<\/p>\n
\u542b\u4e49\uff1a<\/p>\n
ping\uff1a\u53d1\u8d77\u4e00\u4e2a\u63a2\u6d4b\u8bf7\u6c42\uff1b<\/p>\n
-l\uff08L\u7684\u5c0f\u5199\uff09\uff1a\u9650\u5236\u63a2\u6d4b\u5305\u5927\u5c0f\uff1b<\/p>\n
1472\uff1a\u5305\u5927\u5c0f\u4e3a1472\u5b57\u8282\uff1b<\/p>\n
-f\uff1a\u7981\u6b62\u8def\u7531\u5668\u62c6\u5206\u6570\u636e\u5305<\/p>\n
www.baidu.com\uff1a\u8bbe\u767e\u5ea6\u4e3a\u63a2\u6d4b\u76ee\u6807<\/p>\n
\uff08\u4f60\u95ee\u6211\u4e3a\u4ec0\u4e48\u4e0d\u7528Google\u505a\u76ee\u6807\uff1f\u8003\u8651\u5230Google\u65f6\u4e0d\u65f6\u88ab\u5899\uff0c\u8fd8\u662f\u7b97\u4e86\u5427\u3002\u3002\uff09<\/p>\n
3\u3001\u8fd9\u65f6\u67092\u79cd\u60c5\u51b5\uff1a<\/p>\n
\uff081\uff09\u3001\u5982\u679c\u6536\u5230\u4e86\u56de\u590d\uff0c\u90a3\u4e48\u8bf4\u660e\u4f60\u7684\u7f51\u7edc\u5141\u8bb8\u6700\u5927MTU\u503c\u5c31\u662f1500\u5b57\u8282\uff0c\u4e0e\u7cfb\u7edf\u9ed8\u8ba4\u503c\u76f8\u540c\uff0c\u53ea\u9700\u8981\u5c06\u8def\u7531\u5668\u7684MTU\u503c\u4e5f\u8bbe\u7f6e\u4e3a1500\u5373\u53ef\uff1b<\/p>\n
\uff082\uff09\u3001\u5982\u679c\u51fa\u73b0\u9700\u8981\u62c6\u5206\u6570\u636e\u5305\u4f46\u662f\u8bbe\u7f6e DF\u3002\u6216\u662fPacker needs to be fragmented but DF set.\u7684\u63d0\u793a\uff0c\u90a3\u5c31\u8bf4\u660e\u6570\u636e\u5305\u5927\u5c0f\u8d85\u8fc7\u4e86\u7f51\u7edc\u9650\u5b9a\u7684MTU\u5927\u5c0f\u3002\u9700\u8981\u51cf\u5c0f\u63a2\u6d4b\u5305\u5927\u5c0f\u518d\u6b21\u5c1d\u8bd5\u3002\uff08\u4e3a\u4e86\u622a\u6548\u679c\u56fe\uff0c\u6211\u5c06\u63a2\u6d4b\u5305\u6539\u4e3a1473\u4e86\uff09<\/p>\n
4\u3001\u6309\u201c\u4e0a\u7bad\u5934\u201d\u6062\u590d\u521a\u624d\u8f93\u5165\u7684\u547d\u4ee4\uff0c\u7136\u540e\u4ee55\u4e3a\u8de8\u5ea6\u51cf\u5c0f\u5305\u5927\u5c0f\u4e3a1467\u5b57\u8282\uff0c\u518d\u6b21\u56de\u8f66\u63a2\u6d4b\u3002<\/p>\n
5\u3001\u8fd9\u65f6\u540c\u6837\u4e5f\u6709\u4e24\u79cd\u53ef\u80fd\uff1a<\/p>\n
\uff081\uff09\u3001\u5982\u679c\u6709\u8fd4\u56de\uff0c\u8bf4\u660e\u6570\u636e\u5305\u5c0f\u4e8eMTU\u9650\u5236\uff0c\u5c31\u5c06\u5305\u5927\u5c0f+3\u518d\u6b21\u63a2\u6d4b\uff0c\u5982\u679c+3\u4e4b\u540e\u6ca1\u6709\u8fd4\u56de\uff0c\u90a3\u5c31\u4ee51\u4e3a\u8de8\u5ea6\u964d\u4f4e\u6570\u636e\u5305\u5927\u5c0f\u8fdb\u884c\u63a2\u6d4b\u3002<\/p>\n
\uff082\uff09\u3001\u5982\u679c\u8fd8\u662f\u6ca1\u6709\u8fd4\u56de\uff0c\u5c31\u7ee7\u7eed\u4ee55\u4e3a\u8de8\u5ea6\u51cf\u5c0f\u5305\u5927\u5c0f\uff0c\u76f4\u81f3\u6709\u8fd4\u56de\u540e\u8fdb\u884c5\uff081\uff09\u4e2d\u7684\u64cd\u4f5c\u3002<\/p>\n
6\u3001\u76f4\u81f3\u4f60\u53d1\u73b0\u6570\u636e\u5305-1\u540e\uff0c\u6709\u4e86\u8fd4\u56de\uff0c\u5c31\u8bf4\u660e\u4f60\u63a2\u6d4b\u5230\u4e86MTU\u5141\u8bb8\u7684\u51c6\u786e\u6570\u636e\u5305\u5927\u5c0f\u3002\uff08\u4f8b\u5982\u4ece1465\u964d\u4f4e\u52301464\u5c31\u6709\u4e86\u8fd4\u56de\uff0c\u90a3\u4e48\u5141\u8bb8\u7684\u6570\u636e\u5305\u5927\u5c0f\u5c31\u662f1464\uff09<\/p>\n
7\u3001\u4e0d\u8fc7\u4e0a\u9762\u5f97\u5230\u7684\u503c\u8fd8\u4e0d\u80fd\u8bbe\u7f6e\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u6216\u8def\u7531\u5668\u7684MTU\uff0c\u4f60\u627e\u5230\u7684\u6570\u636e\u5305\u5927\u5c0f\u9700\u8981\u52a0\u4e0a28\u5b57\u8282\u7684\u201c\u6570\u636e\u5305\u62a5\u5934\u201d\uff0c\u624d\u662f\u5b8c\u6574\u7684\u6570\u636e\u5305\u5c3a\u5bf8\u3002<\/p>\n
\uff08\u4f8b\u5982\uff1a\u63a2\u6d4b\u5230\u7684\u6570\u636e\u5305\u5927\u5c0f\u662f1464\uff0c\u90a3\u4e48\u52a0\u4e0a28\u5b57\u8282\uff0c\u6700\u7ec8MTU=1492\u5b57\u8282\uff09<\/p>\n
8\u3001\u6700\u540e\uff0c\u53ea\u9700\u8981\u5c06\u8def\u7531\u5668\u548c\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684MTU\u503c\u8bbe\u7f6e\u4e3a\u4f60\u5f97\u51fa\u7684\u7ed3\u679c\u5373\u53ef\u3002<\/p>\n
\u8def\u7531\u5668\u8bbe\u7f6e\u65b9\u6cd5\u89c1\u8def\u7531\u5668\u8bf4\u660e\u4e66\uff01\u5efa\u8bae\u4f7f\u7528\u201cWindows\u4f18\u5316\u5927\u5e08\u3001\u8d85\u7ea7\u5154\u5b50\u9b54\u6cd5\u8bbe\u7f6e\u3001\u9c81\u5927\u5e08\u201d\u7b49\u8f6f\u4ef6\u4fee\u6539\u64cd\u4f5c\u7cfb\u7edf\u7684MTU\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u8f83\u590d\u6742\u7684\u65b9\u6cd5\uff1a<\/p>\n
\uff081\uff09\u3001XP\u64cd\u4f5c\u7cfb\u7edf\u8bbe\u7f6e\u65b9\u6cd5\uff1a<\/p>\n
1\u3001 \u6309Win+R\u7ec4\u5408\u952e\uff0c\u8c03\u51fa\u201c\u8fd0\u884c\u201d\u83dc\u5355\uff0c\u8f93\u5165regedit\uff0c\u7136\u540e\u56de\u8f66\uff1b<\/p>\n
2\u3001 \u9009\u62e9\u201cHKEY_Local_Machine>SYSTEM>CurrentControlSet>Services>Tcpip>Parameters>interface\u201d\uff1b<\/p>\n
3\u3001\u5728 interface \u4e2d\u4e0b\u53ef\u80fd\u6709\u5f88\u591a\u9879\uff0c\u9700\u8981\u9010\u4e2a\u89c2\u5bdf\u952e\u503c\uff0c\u4f1a\u6709\u4e00\u4e2a\u9879\u4e0e\u4f60\u7684\u7f51\u5361IP\u4e00\u81f4\uff0c\u9009\u4e2d\u8be5\u9879\uff1b<\/p>\n
4\u3001\u7136\u540e\u5728\u8be5\u9879\u4e0a\u70b9\u51fb\u53f3\u952e\uff0c\u9009\u62e9\u201c\u7f16\u8f91>\u65b0\u5efa>DWORD\u503c\u201d\uff0c\u7136\u540e\u5728\u53f3\u4fa7\u5c06\u5176\u547d\u540d\u4e3a\u201cMTU\u201d\uff1b<\/p>\n
5\u3001\u53f3\u952e\u70b9\u51fbMTU\uff0c\u9009\u62e9\u201c\u4fee\u6539\u201d\uff0c\u5728\u5f39\u51fa\u7684\u7a97\u53e3\u4e2d\u9009\u62e9\u201c\u5341\u8fdb\u5236\u201d\uff0c\u586b\u5165\u4f60\u5f97\u51fa\u7684\u5408\u7406MTU\u503c\u5373\u53ef\u3002<\/p>\n
\uff082\uff09\u3001Vista\u3001Win7\u64cd\u4f5c\u7cfb\u7edf\u8bbe\u7f6e\u65b9\u6cd5\uff1a<\/p>\n
1\u3001\u8fdb\u5165\u7cfb\u7edf\u76d8:\\Windows\\System32\\\u627e\u5230cmd.exe\uff0c\u53f3\u952e\u201c\u4ee5\u7ba1\u7406\u5458\u8eab\u4efd\u8fd0\u884c\u201d\uff1b<\/p>\n
2\u3001\u5728\u51fa\u73b0\u7684\u201c\u547d\u4ee4\u63d0\u793a\u7b26\u201d\u7a97\u53e3\u4e2d\u8f93\u5165\u201cnetsh interface ipv4 show subinterfaces\u201d\u5e76\u56de\u8f66\u6765\u67e5\u770b\u5f53\u524d\u7684MTU\u503c<\/p>\n
3\u3001\u63a5\u4e0b\u6765\u8f93\u5165\u201cnetsh interface ipv4 set subinterface “\u9700\u4fee\u6539\u7684\u8fde\u63a5\u540d” mtu=\u4f60\u5f97\u51fa\u7684\u5408\u7406\u503c store=persistent\u201d\u5e76\u56de\u8f66\u5373\u53ef<\/p>\n
\u4f8b\u5982\uff1a\u201cnetsh interface ipv4 set subinterface “\u672c\u5730\u8fde\u63a5” mtu=1492 store=persistent\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e2a\u4eba\u7535\u8111\u4fee\u6539MTU\u65e0\u4efb\u4f55\u610f\u4e49 1\u3001\u672c\u5730MTU\u503c\u5927\u4e8e\u7f51\u7edcMTU\u503c\u65f6\uff0c\u672c\u5730\u4f20\u8f93\u7684\u6570\u636e\u5305\u8fc7\u5927\u5bfc\u81f4\u7f51\u7edc\u4f1a\u62c6\u5305\u540e\u4f20\u8f93\uff0c\u4e0d\u4f46\u4ea7\u751f\u989d\u5916\u7684\u6570\u636e\u5305\uff0c\u800c\u4e14\u6d88\u8017\u4e86\u201c\u62c6\u5305\u3001\u7ec4\u5305\u201d\u7684\u65f6\u95f4\u3002 2\u3001\u672c\u5730MTU\u503c\u5c0f\u4e8e\u7f51\u7edcMTU\u503c\u65f6\uff0c\u672c\u5730\u4f20\u8f93\u7684\u6570\u636e\u5305\u53ef\u4ee5\u76f4\u63a5\u4f20\u8f93\uff0c\u4f46\u662f\u672a\u80fd\u5b8c\u5168\u5229\u7528\u7f51\u7edc\u7ed9\u4e88\u7684\u6570\u636e\u5305\u4f20\u8f93\u5c3a\u5bf8\u7684\u4e0a\u9650\u503c\uff0c\u4f20\u8f93\u80fd\u529b\u672a\u5b8c\u5168\u53d1\u6325\u3002 \u8fd9\u6837\u6211\u4eec\u5c31\u77e5\u9053\uff0c\u6240\u8c13\u5408\u7406\u7684\u8bbe\u7f6eMTU\u503c\uff0c\u5c31\u662f\u8ba9\u672c\u5730\u7684MTU\u503c\u4e0e\u7f51\u7edc\u7684MTU\u503c\u4e00\u81f4\uff0c\u65e2\u80fd\u5b8c\u6574\u53d1\u6325\u4f20\u8f93\u6027\u80fd\uff0c\u53c8\u4e0d\u8ba9\u6570\u636e\u5305\u62c6\u5206\u3002 \u63a5\u4e0b\u6765\u6700\u91cd\u8981\u7684\u5c31\u662f\u8981\u627e\u51fa\u5bf9\u4e8e\u4f60\u7684\u7f51\u7edc\u73af\u5883\u6765\u8bf4MTU\u591a\u5c11\u624d\u662f\u5408\u7406\u7684\u3002 \u65b9\u6cd5\u5982\u4e0b\uff1a 1\u3001\u6309Win+R\u7ec4\u5408\u952e\uff0c\u8c03\u51fa\u201c\u8fd0\u884c\u201d\u83dc\u5355\uff0c\u8f93\u5165\u201ccmd\u201d\u7136\u540e\u56de\u8f66 2\u3001\u5728\u51fa\u73b0\u7684\u201c\u547d\u4ee4\u63d0\u793a\u7b26\u201d\u7a97\u53e3\u4e2d\u8f93\u5165\u201cping -l 1472 -f www.baidu.com\u201d\u7136\u540e\u56de\u8f66 \u542b\u4e49\uff1a ping\uff1a\u53d1\u8d77\u4e00\u4e2a\u63a2\u6d4b\u8bf7\u6c42\uff1b 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