Code Library

Ipconfig displays all TCP/IP configuration values. It is of particular use on machines running DHCP. It is used to refresh DHCP settings and to determine which TCP/IP
configuration values have been assigned by DHCP. If Ipconfig is used without parameters, it displays IP addresses, subnet masks, and gateways for each of the adapters on a machine. The adapters can be physical network adapters or logical adapters such as dialup connections.

Some of the parameters for Ipconfig are as follows:
. /all—Displays all TCP/IP configuration values.

. /displaydns—Displays the contents of the DNS client resolver cache.

. /flushdns—Resets and flushes the contents of the DNS client resolver cache. This includes entries made dynamically.

. /registerdns—Sets manual dynamic registration for DNS names and IP addresses configured on a computer. This is particularly useful in troubleshooting DNS name registration or dynamic update problems between a DNS server and client.

. /release[Adapter]—Sends a DHCP release message to the DHCP server to discard DHCP-configured settings for adapters. This parameter is available only for DHCPenabled clients. If no adapter is specified, IP address configuration is released for all adapters.

. /renew[Adapter]—Renews DHCP configuration for all adapters (if an adapter is not specified) and for a specific adapter if the Adapter parameter is included. This parameter is available only for DHCP-enabled clients.

. /setclassid Adapter [classID]—Configures the DHCP class ID for a specific adapter. You can configure the DHCP class ID for all adapters by using the wildcard (*) character in place of Adapter.

. /showclassid Adapter—Displays the DHCP class ID for a specific adapter.

. /allcompartments—Displays information about all compartments.

. /allocmpartments /all—Displays detailed information about all compartments.

Ipconfig displays the assigned configuration for a system such as the default gateway, DNS servers, local IP address, subnet mask, and so on. When you’re debugging network problems, you can use Ipconfig to validate that the proper TCP/IP settings have been set up for a system so that a server properly communicates on the network.

Source of Information : Sams - Windows Server 2008 R2 Unleashed (2010)