The ipconfig command is a Windows CMD command used to display the current configuration of a computer’s network connections. It is used to view and modify the settings of the IP address, subnet mask, default gateway, and DNS servers. This command is used to troubleshoot network problems, set up a network, and configure the network settings of a computer.
Purpose of ipconfig CMD Command
The purpose of the ipconfig command is to view and modify the network settings of a computer. It can be used to troubleshoot network problems, set up a network, and configure the network settings of a computer. The ipconfig command can also be used to view the IP address, subnet mask, default gateway, and DNS servers of a computer.
Syntax of ipconfig CMD Command
The syntax of the ipconfig command is as follows:
- ipconfig – Displays the current IP configuration.
- ipconfig /all – Displays the current IP configuration, including the DNS server, DHCP server, and WINS server.
- ipconfig /release – Releases the current IP address.
- ipconfig /renew – Renews the current IP address.
- ipconfig /flushdns – Flushes the DNS resolver cache.
- ipconfig /displaydns – Displays the contents of the DNS resolver cache.
- ipconfig /registerdns – Refreshes all DHCP leases and re-registers DNS names.
- ipconfig /showclassid – Displays all the DHCP class IDs allowed for adapter.
- ipconfig /setclassid – Modifies the DHCP class id.
Options of ipconfig CMD Command
The ipconfig command has several options that can be used to view and modify the network settings of a computer. These options are as follows:
| Option | Description |
|---|---|
| /all | Displays the current IP configuration, including the DNS server, DHCP server, and WINS server. |
| /release | Releases the current IP address. |
| /renew | Renews the current IP address. |
| /flushdns | Flushes the DNS resolver cache. |
| /displaydns | Displays the contents of the DNS resolver cache. |
| /registerdns | Refreshes all DHCP leases and re-registers DNS names. |
| /showclassid | Displays all the DHCP class IDs allowed for adapter. |
| /setclassid | Modifies the DHCP class id. |
User Examples of ipconfig CMD Command
The ipconfig command can be used in a variety of ways to view and modify the network settings of a computer. Here are some examples of how the ipconfig command can be used:
Example 1: View Current IP Configuration
To view the current IP configuration of a computer, open the Command Prompt and type the following command:
- ipconfig
This will display the current IP configuration of the computer, including the IP address, subnet mask, default gateway, and DNS servers.
Example 2: Release Current IP Address
To release the current IP address of a computer, open the Command Prompt and type the following command:
- ipconfig /release
This will release the current IP address of the computer.
Example 3: Renew Current IP Address
To renew the current IP address of a computer, open the Command Prompt and type the following command:
- ipconfig /renew
This will renew the current IP address of the computer.
Example 4: Flush DNS Resolver Cache
To flush the DNS resolver cache of a computer, open the Command Prompt and type the following command:
- ipconfig /flushdns
This will flush the DNS resolver cache of the computer.
Example 5: Display Contents of DNS Resolver Cache
To display the contents of the DNS resolver cache of a computer, open the Command Prompt and type the following command:
- ipconfig /displaydns
This will display the contents of the DNS resolver cache of the computer.
Example 6: Refresh DHCP Leases and Re-register DNS Names
To refresh the DHCP leases and re-register the DNS names of a computer, open the Command Prompt and type the following command:
- ipconfig /registerdns
This will refresh the DHCP leases and re-register the DNS names of the computer.
Example 7: Display All DHCP Class IDs Allowed for Adapter
To display all the DHCP class IDs allowed for an adapter, open the Command Prompt and type the following command:
- ipconfig /showclassid
This will display all the DHCP class IDs allowed for the adapter.
Example 8: Modify DHCP Class ID
To modify the DHCP class ID of an adapter, open the Command Prompt and type the following command:
- ipconfig /setclassid
This will modify the DHCP class ID of the adapter.
Conclusion
The ipconfig command is a Windows CMD command used to view and modify the network settings of a computer. It can be used to troubleshoot network problems, set up a network, and configure the network settings of a computer. The ipconfig command has several options that can be used to view and modify the network settings of a computer. These options include /all, /release, /renew, /flushdns, /displaydns, /registerdns, /showclassid, and /setclassid. The ipconfig command can be used in a variety of ways to view and modify the network settings of a computer.