配了DHCP后客户机获不到IP

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default-lease-time 259200;\r\nmax-lease-time 777600;\r\noption domain-name \"ntu.edu.cn\";\r\n                                                                                \r\nsubnet 210.29.64.0 netmask 255.255.255.224 {\r\nrange 210.29.64.1 210.29.64.20;\r\nrange 210.29.64.30 210.29.64.100;\r\noption broadcast-address 210.29.64.255;\r\noption subnet-mask 255.255.255.240;\r\noption routers 210.29.64.33;\r\noption domain-name-servers 210.29.64.33,210.29.64.28;\r\n}

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谢谢这位顶贴大哥!!!!!!