• Home
• About
• Computer Issues
• Computer parts
• Computer parts install instructions
• Contact
• Definitions
• DOS Commands
• Downloads
• Hardware questions
• How to use software
• How to use Windows
• How to perform tasks and other information
• Internet info and help
• How to use Microsoft Office
• Network setup, and other info
• Information on operating systems
• Reinstall operating system
• Service cost
• Tips
• Troubleshooting Tools
• 
  I have put this website up for your convenience.  The website and email service is free, but if you find this site helpful and would like to make a donation, click on the donate button above. Thank you!

IPCONFIG

Click on the item for more info

• About
• Syntax
• Parameters
• Remarks
• Examples
• How to use

About

Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings. Used without parameters, ipconfig displays the IP address, subnet mask, and default gateway for all adapters.

Return to Top

 

Syntax

ipconfig [/all] [/renew [Adapter]] [/release [Adapter]] [/flushdns] [/displaydns] [/registerdns] [/showclassid Adapter] [/setclassid Adapter [ClassID]]

Parameters

/all : Displays the full TCP/IP configuration for all adapters. Without this parameter, ipconfig displays only the IP address, subnet mask, and default gateway values for each adapter. Adapters can represent physical interfaces, such as installed network adapters, or logical interfaces, such as dial-up connections.

/renew [Adapter] : Renews DHCP configuration for all adapters (if an adapter is not specified) or for a specific adapter if the Adapter parameter is included. This parameter is available only on computers with adapters that are configured to obtain an IP address automatically. To specify an adapter name, type the adapter name that appears when you use ipconfig without parameters.

/release [Adapter] : Sends a DHCPRELEASE message to the DHCP server to release the current DHCP configuration and discard the IP address configuration for either all adapters (if an adapter is not specified) or for a specific adapter if the Adapter parameter is included. This parameter disables TCP/IP for adapters configured to obtain an IP address automatically. To specify an adapter name, type the adapter name that appears when you use ipconfig without parameters.

/flushdns : Flushes and resets the contents of the DNS client resolver cache. During DNS troubleshooting, you can use this procedure to discard negative cache entries from the cache, as well as any other entries that have been added dynamically.

/displaydns : Displays the contents of the DNS client resolver cache, which includes both entries preloaded from the local Hosts file and any recently obtained resource records for name queries resolved by the computer. The DNS Client service uses this information to resolve frequently queried names quickly, before querying its configured DNS servers.

/registerdns : Initiates manual dynamic registration for the DNS names and IP addresses that are configured at a computer. You can use this parameter to troubleshoot a failed DNS name registration or resolve a dynamic update problem between a client and the DNS server without rebooting the client computer. The DNS settings in the advanced properties of the TCP/IP protocol determine which names are registered in DNS.

/showclassid Adapter : Displays the DHCP class ID for a specified adapter. To see the DHCP class ID for all adapters, use the asterisk (*) wildcard character in place of Adapter. This parameter is available only on computers with adapters that are configured to obtain an IP address automatically.

/setclassid Adapter [ClassID] : Configures the DHCP class ID for a specified adapter. To set the DHCP class ID for all adapters, use the asterisk (*) wildcard character in place of Adapter. This parameter is available only on computers with adapters that are configured to obtain an IP address automatically. If a DHCP class ID is not specified, the current class ID is removed.

/?: Displays help at the command prompt.

Remarks

• The ipconfig command is the command-line equivalent to the winipcfg command, which is available in Windows Millennium Edition, Windows 98, and Windows 95. Although Windows XP does not include a graphical equivalent to the winipcfg command, you can use Network Connections to view and renew an IP address. To do this, open Network Connections, right-click a network connection, click Status, and then click the Support tab.
• This command is most useful on computers that are configured to obtain an IP address automatically. This enables users to determine which TCP/IP configuration values have been configured by DHCP, Automatic Private IP Addressing (APIPA), or an alternate configuration.
• If the Adapter name contains any spaces, use quotation marks around the adapter name (that is, "Adapter Name").
• For adapter names, ipconfig supports the use of the asterisk (*) wildcard character to specify either adapters with names that begin with a specified string or adapters with names that contain a specified string. For example, Local* matches all adapters that start with the string Local and *Con* matches all adapters that contain the string Con.
• This command is available only if the Internet Protocol (TCP/IP) protocol is installed as a component in the properties of a network adapter in Network Connections

Examples

To display the basic TCP/IP configuration for all adapters, type:

ipconfig

To display the full TCP/IP configuration for all adapters, type:

ipconfig /all

To renew a DHCP-assigned IP address configuration for only the Local Area Connection adapter, type:

ipconfig /renew "Local Area Connection"

To flush the DNS resolver cache when troubleshooting DNS name resolution problems, type:

ipconfig /flushdns

To display the DHCP class ID for all adapters with names that start with Local, type:

ipconfig /showclassid Local*

To set the DHCP class ID for the Local Area Connection adapter to TEST, type:

ipconfig /setclassid "Local Area Connection" TEST

Return to Top

 

Here is how to use

1. Open a Command Prompt window (Link will open in a separate page)
2. Type in "IPCONFIG /ALL"
3. Press Enter
4. You will see a list of settings for each adapter you have on the computer. If you have a network card and a wireless card, you will see a list for both of them. The IP address and default gateway will show on the one that you are using.
5. Note if you are getting a gateway. If you are getting a gateway, the system is seeing either the router or the cable/DSL modem.
6. Note if you are getting an TCP/IP address. If it is blank or all zeros then a setting is not correct or having hardware issue.
7. Write down the IP address, physical address, and the Default gateway address.

 

If you are having an issue with the internet you can try release and renew. Here is how to do that.

1. Open a Command Prompt window (Link will open in a separate page)
2. Type "IPCONFIG /release"
3. Press Enter
4. Type "IPCONFIG /renew" (Sometimes this will error out)

 

There is too many possible outcomes on the above command to list here. Above is a general guide.

NOTE: Physical address is the MAC address for the network adapter. You may have more than one. If you have a network card and a wireless network card, you will have a physical address for both.

If you need the IP address, Here is how to get the IP address

1. Open a Command Prompt window (Link will open in a separate page)
2. Press Enter or click on OK
3. Type "IPCONFIG" (without the ")
4. Press Enter

 

The 192.168.3.200 is the IP address

Return to Top