帮看下 怎么我设置的静态IP地址不起作用？

帮看下 怎么我设置的静态IP地址不起作用？
[HKEY_LOCAL_MACHINE\Comm\CS89501\Parms\TcpIp]
   ; This should be MULTI_SZ
   "DefaultGateway"=multi_sz:"192.168.1.1"
   ; This should be SZ... If null it means use LAN, else WAN and Interface.
   ;"LLInterface"=""
   ; Use zero for broadcast address? (or 255.255.255.255)
   "UseZeroBroadcast"=dword:0
   ; Thus should be MULTI_SZ, the IP address list
   "IpAddress"=multi_sz:"192.168.1.217"
   ; This should be MULTI_SZ, the subnet masks for the above IP addresses
   "Subnetmask"=multi_sz:"255.255.255.0"
   "EnableDHCP"=dword:0