{"id":1312,"date":"2018-07-17T00:51:33","date_gmt":"2018-07-16T16:51:33","guid":{"rendered":"https:\/\/www.xiaobo.li\/?p=1312"},"modified":"2018-07-17T00:51:33","modified_gmt":"2018-07-16T16:51:33","slug":"linux-route","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/1312","title":{"rendered":"linux route"},"content":{"rendered":"

\u8bed\u6cd5<\/h3>\n
route(\u9009\u9879)(\u53c2\u6570)<\/pre>\n
\u76f4\u63a5\u5728\u547d\u4ee4\u884c\u4e0b\u6267\u884croute\u547d\u4ee4\u6765\u6dfb\u52a0\u8def\u7531\uff0c\u4e0d\u4f1a\u6c38\u4e45\u4fdd\u5b58\uff0c\u5f53\u7f51\u5361\u91cd\u542f\u6216\u8005\u673a\u5668\u91cd\u542f\u4e4b\u540e\uff0c\u8be5\u8def\u7531\u5c31\u5931\u6548\u4e86\uff1b\u53ef\u4ee5\u5728\/etc\/rc.local<\/code>\u4e2d\u6dfb\u52a0route\u547d\u4ee4\u6765\u4fdd\u8bc1\u8be5\u8def\u7531\u8bbe\u7f6e\u6c38\u4e45\u6709\u6548\u3002<\/p>\n
\u9009\u9879<\/h3>\n
-A\uff1a\u8bbe\u7f6e\u5730\u5740\u7c7b\u578b\uff1b\r\n-C\uff1a\u6253\u5370\u5c06Linux\u6838\u5fc3\u7684\u8def\u7531\u7f13\u5b58\uff1b\r\n-v\uff1a\u8be6\u7ec6\u4fe1\u606f\u6a21\u5f0f\uff1b\r\n-n\uff1a\u4e0d\u6267\u884cDNS\u53cd\u5411\u67e5\u627e\uff0c\u76f4\u63a5\u663e\u793a\u6570\u5b57\u5f62\u5f0f\u7684IP\u5730\u5740\uff1b\r\n-e\uff1anetstat<\/a><\/span>\u683c\u5f0f\u663e\u793a\u8def\u7531\u8868\uff1b\r\n-net\uff1a\u5230\u4e00\u4e2a\u7f51\u7edc\u7684\u8def\u7531\u8868\uff1b\r\n-host<\/a><\/span>\uff1a\u5230\u4e00\u4e2a\u4e3b\u673a\u7684\u8def\u7531\u8868\u3002<\/pre>\n
\u53c2\u6570<\/h3>\n
Add\uff1a\u589e\u52a0\u6307\u5b9a\u7684\u8def\u7531\u8bb0\u5f55\uff1b\r\nDel\uff1a\u5220\u9664\u6307\u5b9a\u7684\u8def\u7531\u8bb0\u5f55\uff1b\r\nTarget\uff1a\u76ee\u7684\u7f51\u7edc\u6216\u76ee\u7684\u4e3b\u673a\uff1b\r\ngw\uff1a\u8bbe\u7f6e\u9ed8\u8ba4\u7f51\u5173\uff1b\r\nmss\uff1a\u8bbe\u7f6eTCP\u7684\u6700\u5927\u533a\u5757\u957f\u5ea6\uff08MSS\uff09\uff0c\u5355\u4f4dMB\uff1b\r\nwindow\uff1a\u6307\u5b9a\u901a\u8fc7\u8def\u7531\u8868\u7684TCP\u8fde\u63a5\u7684TCP\u7a97\u53e3\u5927\u5c0f\uff1b\r\ndev\uff1a\u8def\u7531\u8bb0\u5f55\u6240\u8868\u793a\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/pre>\n
\u5b9e\u4f8b<\/h3>\n
\u663e\u793a\u5f53\u524d\u8def\u7531\uff1a<\/strong><\/p>\n
[root@localhost ~]# route\r\nKernel IP routing table\r\nDestination\u00a0\u00a0\u00a0\u00a0 Gateway\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Genmask\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Flags Metric Ref\u00a0\u00a0\u00a0 Use Iface\r\n112.124.12.0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 255.255.252.0\u00a0\u00a0 U\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth1\r\n10.160.0.0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 255.255.240.0\u00a0\u00a0 U\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth0\r\n192.168.0.0\u00a0\u00a0\u00a0\u00a0 10.160.15.247\u00a0\u00a0 255.255.0.0\u00a0\u00a0\u00a0\u00a0 UG\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth0\r\n172.16.0.0\u00a0\u00a0\u00a0\u00a0\u00a0 10.160.15.247\u00a0\u00a0 255.240.0.0\u00a0\u00a0\u00a0\u00a0 UG\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth0\r\n10.0.0.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10.160.15.247\u00a0\u00a0 255.0.0.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 UG\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth0\r\ndefault\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 112.124.15.247\u00a0 0.0.0.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 UG\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 eth1\r\n\r\n[root@localhost ~]# route -n\r\nKernel IP routing table\r\nDestination     Gateway         Genmask         Flags Metric Ref    Use Iface\r\n112.124.12.0    0.0.0.0         255.255.252.0   U     0      0        0 eth1\r\n10.160.0.0      0.0.0.0         255.255.240.0   U     0      0        0 eth0\r\n192.168.0.0     10.160.15.247   255.255.0.0     UG    0      0        0 eth0\r\n172.16.0.0      10.160.15.247   255.240.0.0     UG    0      0        0 eth0\r\n10.0.0.0        10.160.15.247   255.0.0.0       UG    0      0        0 eth0\r\n0.0.0.0         112.124.15.247  0.0.0.0         UG    0      0        0 eth1<\/pre>\n
\u5176\u4e2dFlags\u4e3a\u8def\u7531\u6807\u5fd7\uff0c\u6807\u8bb0\u5f53\u524d\u7f51\u7edc\u8282\u70b9\u7684\u72b6\u6001\uff0cFlags\u6807\u5fd7\u8bf4\u660e\uff1a<\/p>\n