4.4.1 ipconfig
4.4.1 ipconfig On a Windows host, the ipconfig command is widely used for basic configuration reporting and support tasks. ipconfig can be used as follows: ipconfig without any switches will display the IP address, subnet mask, and default gateway (router) for all network interfaces to which TCP is bound. ipconfig displays complete TCP configuration parameters for each interface, including whether the Dynamic Host Configuration Protocol (DHCP) is enabled for the interface and the interface's hardware (MAC) address. ipconfig interface forces a DHCP client to renew the lease it has for an IP address. ipconfig interface releases the IP address obtained from a DHCP server so that the interface(s) will no longer have an IP address. ipconfig displays the Domain Name System (DNS) resolver cache. ipconfig clears the DNS resolver cache. ipconfig registers the host with a DNS server (if it supports dynamic updates).