DHCP Support Information

JLAB DHCP Support

Overview

The use of DHCP at JLab is undergoing some changes. Our network team is currently in the process of creating virtual local area networks (VLANs) across the site. Therefore, DHCP will not work in the same way from building to building. If you have questions regarding the details of these changes, please send an email to helpdesk@jlab.org with inquiries.

Client Configuration

To use DHCP, you must modify your IP configuration for its use. This is different for each operating system (OS). Please find instructions on how to configure your OS to use DHCP below.

Windows DHCP Configuration

Go to Start
Control Panel
Network Configuration
Right-click Local Area Connection
Select Properties from the pop-up menu
From the General tab, select Internet Protocol (TCP/IP)
Click the Properties button
Select "Obtain IP address automatically"
Select "Obtain DNS server address automatically"
Reboot if prompted to do so.

Once your system has rebooted, open any web browser.

In the web browser, go to http://netreg.jlab.org (it should automatically open to this page)
Login using your JLAB username and password.
Read the Network Acceptable Use Policy that is displayed.
Click on the "Accept" button displayed on the bottom of the page.
Reboot your machine for a final time to get your correct IP address

Linux

In order to modify your system to use DHCP, modify the file /etc/sysconfig/network-scripts/ifcfg-eth0 to look similar to this:

DEVICE=eth0
BOOTPROTO=dhcp
ONBOOT=yes

Once this file is modified (as specified above), you can reboot the system and bring up a web browser.

In the web browser, go to http://netreg.jlab.org
Login using your JLAB username and password.
Read the Network Acceptable Use Policy that is displayed.
Click on the "Accept" button displayed on the bottom of the page.
Reboot your machine for a final time to get your correct IP address

This document is maintained by {helpdesk@jlab.org}