Users Guide
112 | The Basic User-Centric Networks Dell Networking W-Series ArubaOS 6.4.x| User Guide
Spanning tree protocol (STP) is enabled by default on the controller. STP ensures a single active path between
any two network nodes, thus avoiding bridge loops. Disable STP on the controller if you are not employing STP
in your network.
In the WebUI
To configure a loopback IP address:
1. Navigate to Configuration > Network > Controller > System Settings.
2. Enter the IP address under Loopback Interface.
3. On this window, you can also turn off spanning tree. Click No for Spanning Tree Enabled.
4. Click Apply at the bottom of the window (you might need to scroll down the window).
5. At the top of the window, click Save Configuration.
You must reboot the controller for the new IP address to take effect.
6. Navigate to the Maintenance > Controller > Reboot Controller window.
7. Click Continue.
In the CLI
To configure a loopback IP address:
(host)(config) #interface loopback ip address <A.B.C.D>
(host)(config) #no spanning-tree
(host)(config) #write memory
(host)(config) #reload
The controller returns the following messages:
Do you really want to reset the system(y/n):
Enter y to reboot the controller or n to cancel.
System will now restart!
...
Restarting system.
To verify that the controller is accessible on the network, ping the loopback address from a workstation on the
network.
Configuring the System Clock
You can manually set the clock on the controller, or configure the controller to use a Network Time Protocol
(NTP) server to synchronize its system clock with a central time source. For more information about setting the
controller’s clock, see Setting the System Clock on page 909.
Installing Licenses
ArubaOS consists of a base operating system with optional software modules that you can activate by
installing license keys. If you use the Setup Wizard during the initial setup phase, you will have the opportunity
to install software licenses at that time. Refer to Software Licenses on page 146 for detailed information on
Licenses.
Connecting the Controller to the Network
Connect the ports on the controller to the appropriately-configured ports on an L2 switch or router. Make sure
that you have the correct cables and that the port LEDs indicate proper connections. Refer to the Installation