Dynamic Host Configuration Protocol (DHCP) assigns dynamic IP addresses on a network. So each time the computer connects to the network, DHCP allows a computer to have a different IP address. But in some cases, like when installing Oracle Database or Oracle Business Intelligence, you need to assign a local IP address to that computer. And you have to install a loopback adapter to perform this task.
To install a loopback adapter on Windows XP the required steps are:
- Open Windows Control Panel
- Start Add Hardware wizard
- Choose “Yes, I have already connected the hardware” when answering to the “Have you already connected this hardware to your computer?” question
- From the hardware list installed on your computer choose “Add a new hardware device”
- Choose “Install the hardware that I manually select from a list” when answering to the “What do you want the wizard to do?” question.
- From the type of hardware types, choose Network adapters.
- From the loopback adapters list, choose Microsoft Loopback Adapter.
After the installation completes there are a few configuration steps:
- Right click on My Network places, and then right-click on the new connection, usually named “Local Area Connection 2” and choose Properties.
- Select Internet Protocol (TCP/IP) and click Properties
- Enter a non-routable IP for the loopback adapter
- Add a line to the SYSTEM_DRIVE:\WINNT\system32\drivers\etc\hosts like:
10.10.10.10 mycomputer.mydomain.com mycomputer
- Restart the computer.
To check if a loopback adapter is installed on your computer, run the ipconfig /all command:
If there is a loopback adapter installed, you would see a section that lists the values for the loopback adapter.
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