ipconfig is small utility that come with Windows XP. This utility provides you with diagnostic information related to TCP/IP network configuration. Ipconfig also accepts various Dynamic Host Configuration Protocol (DHCP) commands, allowing a system to update or release its TCP/IP network configuration, and so on.
To run the Ipconfig.exe utility, at a command prompt, type ipconfig, and then add any appropriate options.
ipconfig /all
Dispay full configuration information.
ipconfig /release
Release the IP Address for the spesified adapter.
ipconfig /renew
Renew the IP address for the spesified adapter.
ipconfig /flushdns
Purges the DNS Resolver cache.
ipconfig /registerdns
Refreshes all DHCP leases and re-registers DNS names
ipconfig /displaydns
Display the contents of DNS Resolver Cache.
ipconfig /showclassid
Display all the DHCP class IDs allowed for adapter.
ipconfig /setclassid
Modifies the DHCP class id
Tags: command line, tips