配置DNS服务器IP

 #############################脚本功能及说明####################
 #该脚本用来在本地服务器上配置DNS服务器IP
 #创建时间：2014-10-22

 #########################定义函数#############################
 #定义函数：配置DNS
 #ConnectionID为网卡ID；$dnsservers为要配置的DNS服务器的IP列表
 function DNSConfig($ConnectionID,[array]$dnsservers)
     {
      #判断当前系统是2003（5）,还是2008，在设置DNS服务器的时候所使用的命令不同
      If ((gwmi win32_operatingsystem).version.split(".")[0] -eq 5)
         {
          netsh.exe interface ip set dns "$ConnectionID" static $dnsservers[0] primary
          $dnsservers[1..$dnsservers.count] | % { netsh.exe interface ip add dns "$ConnectionID" $_ }
         }
      Else
        {
         netsh.exe interface ip set dnsservers "$ConnectionID" static $dnsservers[0] primary validate=no
         $dnsservers[1..$dnsservers.count] | % { netsh.exe interface ip add dnsservers "$ConnectionID" $_ validate=no }
        }
     }

 ################脚本开始######################################################################
 $index = (gwmi Win32_NetworkAdapterConfiguration |?{ $_.DefaultIPGateway -ne $null}).Index
 [array]$ip = (gwmi Win32_NetworkAdapterConfiguration -filter "index = $index").IPAddress
 $ConnectionID = (gwmi win32_networkadapter -filter "index = $index").NetConnectionID
 #根据IP属于IDC设置DNS
 $ip2 = $ip[0].split("\.")[0,1] -join "."
 If ($ip2 -eq "10.4")
     {
      $dnsservers="10.4.2.220","10.5.2.220","192.168.251.210"
      dnsconfig $ConnectionID  $dnsservers
     }
 Elseif ($ip2 -eq "10.5")
     {
      $dnsservers="10.5.2.220","192.168.251.210","10.4.2.220"
      dnsconfig $ConnectionID  $dnsservers
     }
 Else
    {
     $dnsservers="192.168.251.210","10.4.2.220","10.5.2.220"
     dnsconfig $ConnectionID  $dnsservers
    }

 #查看本地DNS服务器列表
 $dnss=gwmi win32_networkadapter -filter "NetConnectionStatus = 2"|foreach {(gwmi Win32_NetworkAdapterConfiguration -filter "index = $($_.index)").DNSServerSearchOrder}
 $dnss