Lab 18. Using Ipconfig to View and
Modify Network Information on
Windows
Lab Objective:
Learn how to use ipconfig to view and modify network information on
Windows.
Lab Purpose:
Ipconfig stands for Internet Protocol configuration. It is a console application
which displays all current TCP/IP network configuration values and refreshes
DHCP and DNS settings.
Lab Tool:
Windows
Lab Topology:
You can use Windows for this lab.
Lab Walkthrough:
Task 1:
We will begin by viewing the help information screen by executing the
following command:
ipconfig /?
Open a command prompt to begin, and type “ipconfig” to view your
networking information.
As you will see, there will be a lot of information shown, including your local
IP addresses.
Task 2:
To display the fill TCP/IP configuration information for all network adapters,
we can use the following command:
ipconfig /all
Task 3:
Assume that our machine has an IP address with DHCP. To release our
current IPv4 or IPv6 address, we can use the following commands:
ipconfig /release
ipconfig /release6
Renew our IP addresses via DHCP:
ipconfig /renew
Task 3:
If we want to purge the DNS resolver cache, we can do that using the
following command:
ipconfig /flushdns
This will essentially get rid of the local cache of DNS information.
Task 4:
We can also refresh all DHCP leases and re-register DNS names using the
following command:
ipconfig /registerdns
You will need to run command prompt as administrator to execute this
command.
Task 5:
We can display the content of the DNS Resolver Cache using the following
command:
ipconfig /displaydns
| 
