When I need to keep changing TCP/IP settings to test networking configs it’s a real pain to have to keep opening up the adapter properties (especially on Windows 7) and usually I’m in too much of a hurry to lookup up the netsh command syntax. For that reason I’m posting this small script. Save it as ipset.cmd.

Note: using netsh to revert to DHCP seems to be intermittent if no DHCP server is available – e.g. if the adapter has no link.

Windows 7

@echo off
If "%1" == "" (
  echo Configures Local Area Connection
  echo   ipset address/maskbits gateway (dns)
  echo   ipset 192.168.1.99/24 192.168.1.254
  echo   ipset 192.168.1.99/24 192.168.1.254 8.8.8.8
  echo   ipset dhcp
  echo.
  goto :eof
)
If "%1" == "dhcp" (
  netsh interface ip set dnsservers name="Local Area Connection" source=%1
  netsh interface ip set address name="Local Area Connection" source=%1
  goto :eof
)
netsh interface ip set address name="Local Area Connection" source=static address=%1 gateway=%2
If "%3" == "" (
  :: OpenDNS public DNS servers
  netsh interface ip set dnsservers name="Local Area Connection" source=static address=208.67.222.222
  netsh interface ip add dnsservers name="Local Area Connection" address=208.67.222.220
) else (
  netsh interface ip set dnsservers name="Local Area Connection" source=static address=%3
)

Windows XP

@echo off
If "%1" == "" (
  echo Configures Local Area Connection
  echo   ipset address mask gateway
  echo   ipset 192.168.1.99 255.255.255.0 192.168.1.254
  echo   ipset dhcp
  echo.
  goto :eof
)
If "%1" == "dhcp" (
  netsh int ip set address local source=%1
  netsh int ip set dns local source=%1
  goto :eof
) else (
  netsh int ip set address local static %1 %2 %3 1
  :: OpenDNS public DNS servers
  netsh int ip add dns local 208.67.222.222 index=1
  netsh int ip add dns local 208.67.222.220 index=2
)