{"id":615,"date":"2009-07-01T10:41:15","date_gmt":"2009-07-01T02:41:15","guid":{"rendered":"http:\/\/www.liangliang.org.cn\/blog\/?p=615"},"modified":"2009-07-01T10:41:15","modified_gmt":"2009-07-01T02:41:15","slug":"zt%e4%b8%80%e4%b8%aa%e7%94%b1mtu%e5%bc%95%e8%b5%b7%e7%9a%84%e8%b6%85%e7%ba%a7%e9%83%81%e9%97%b7%e7%9a%84%e9%97%ae%e9%a2%98%e5%8f%8a%e8%a7%a3%e5%86%b3","status":"publish","type":"post","link":"https:\/\/www.liangliang.org.cn\/?p=615","title":{"rendered":"zt:\u4e00\u4e2a\u7531MTU\u5f15\u8d77\u7684\u8d85\u7ea7\u90c1\u95f7\u7684\u95ee\u9898\u53ca\u89e3\u51b3"},"content":{"rendered":"

\u539f\u6587\uff1ahttp:\/\/blog.chinaunix.net\/u\/7667\/showart_1844746.html
\n \u5076\u7684\u672c\u672c\u901a\u8fc7\u4e00\u4e2a\u901a\u8fc7\u4e00\u4e2aTp-Link TR-WL541G\u65e0\u7ebf\u8def\u7531\u5668\u4e0a\u7f51, \u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\u4ee5\u6765, \u7b14\u8bb0\u672c\u7684Windows\u53ef\u4ee5\u6b63\u5e38\u4e0a\u7f51, \u800cLinux\u4e0b\u5219\u662f\u6709\u7684\u7f51\u7ad9\u53ef\u4ee5\u4e0a, \u6709\u7684\u7f51\u7ad9\u4e0d\u53ef\u4ee5\u4e0a, \u5f88\u591a\u7f51\u7ad9, \u8f93\u5b8c\u5730\u5740, \u53ea\u8981\u6572, \u9a6c\u4e0a\u5c31\u51fa\u73b0\u51fa\u9519\u4fe1\u606f. <\/p>\n

\u5347\u7ea7\u8fc7\u5185\u6838, \u6bd4\u8f83\u8fc7\u5185\u6838\u53c2\u6570, \u5173\u95ed\u9632\u706b\u5899, \u80fd\u60f3\u5230\u7684\u62db\u6570\u90fd\u7528\u4e0a\u4e86, \u6545\u969c\u4f9d\u65e7. <\/p>\n

\u4eca\u5929\u665a\u4e0a\u8fd0\u884cifconfig\u7684\u65f6\u5019\u7a81\u7136\u53d1\u73b0wlan0\u7684MTU\u7adf\u7136\u662f576:
\nwlan0 Link encap:Ethernet HWaddr 00:1a:73:81:cc:ec
\n inet addr:192.168.1.100 Bcast:255.255.255.255 Mask:255.255.255.0
\n UP BROADCAST RUNNING MULTICAST MTU:576 Metric:1
\n RX packets:62 errors:0 dropped:0 overruns:0 frame:0
\n TX packets:126 errors:0 dropped:0 overruns:0 carrier:0
\n collisions:0 txqueuelen:1000
\n RX bytes:5003 (4.8 KiB) TX bytes:37090 (36.2 KiB) <\/p>\n

\u800c\u522b\u7684\u7f51\u5361MTU\u8bbe\u7f6e\u90fd\u4e3a1500. \u8fd0\u884c\u547d\u4ee4
\nifconfig wlan0 mtu 1500<\/p>\n

\u540e, \u4f7f\u7528\u6d4f\u89c8\u5668\u8bbf\u95ee\u539f\u6765\u65e0\u6cd5\u8bbf\u95ee\u7684\u7f51\u7ad9\u7adf\u7136\u53ef\u4ee5\u8bbf\u95ee\u4e86. \u5b9e\u5728\u662f\u4e00\u4e2a\u4ee5\u5916\u7684\u60ca\u559c. <\/p>\n

\u5f53\u6211\u5220\u9664wlan0\u5bf9\u5e94\u7684\u5185\u6838\u6a21\u5757, \u91cd\u65b0\u52a0\u8f7d\u540e, wlan0\u7684mtu\u4e3a1500, \u8fd0\u884cdhclient \u6293\u53d6\u5730\u5740\u540e, wlan0\u7684mtu\u5c31\u53d8\u6210\u4e86576. \u4e5f\u5c31\u662f\u8bf4wlan0\u7684\u9ed8\u8ba4mtu\u4e3a1500, \u7ecf\u8fc7dhcp\u5206\u914d\u5730\u5740\u540e\u53d8\u6210\u4e86576. \u4f7f\u7528wireshark\u6293\u53d6dhcp\u65f6\u7ecf\u8fc7wlan0\u7684\u8f6f\u4ef6\u5305\u53d1\u73b0client\u5411 dhcp server(\u65e0\u7ebf\u8def\u7531\u5668)\u8bf7\u6c42\u4e86Interface MTU, \u800cdhcp server\u8fd4\u56de\u7684Interface MTU\u4e3a576. <\/p>\n

\u4fee\u6539\/etc\/dhcp3\/dhclient.conf\u6587\u4ef6, \u5220\u9664request\u540e\u7684\"interface-mtu,\"\u540e, dhclient\u5c06\u4e0d\u4f1a\u5411dhcp server\u8bf7\u6c42Interface MTU, \u95ee\u9898\u89e3\u51b3.<\/p>\n","protected":false},"excerpt":{"rendered":"

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