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Using ipconfig to Troubleshoot IF Addressing

Windows XP Professional provides ipconfigto view TCP/IP information. The

ipconfigcommand is used to verify the TCP/IP configuration options on a host,

including the IP address, subnet mask, and default gateway.

To start the ipconfigcommand, type ipconfigat the command prompt. The

values of the three primary configuration parameters are displayed. You can

obtain morę information on the TCP/IP configuration settings, type ipconfig

all at the command prompt. The screen displays the information about all

TCP/IP configuration options. By using this command, you can determine

whether DHCP is enabled at the client Computer.

A DHCP server leases an IP address to a client for a specific length of time.

The Lease Obtained and Lease Expires labels display information about when

the lease was obtained and when it will expire, respectively. Additional commands useful for troubleshooting an IP address are:

ipconfig/release. Releases all connections for the Computer, s adapter.

.^ipconfig /renew. Renews the connections for the Computer, s adapter

according to the Internet Protocol (TCP/IP) Properties sheet.

These commands are useful when moving from a static address to a dynamie

address with DHCP. The release command releases the static address from the

adapter, and the renew command sends a request to DHCP to assign an address.