Hewlett Packard Enterprise Company ARUBA70 Manual Do Utilizador

Chapter 2

Option in the requested Option list, and if the DHCP server is configured to return the IP 
address of the Master switch, the IP address will be a part of the DHCP response. This is used 
by the AP to get its image as well as its configuration.

Discovery of the serverip and master variables is necessary when the DHCP response does not 
include the Vendor Specific option. The AP attempts to discover an Aruba Master switch by 
sending multicast packets and broadcast packets on its subnet. To use the ADP discovery 
method, the ADP discovery mechanism needs to be enabled on the Aruba Master Switch 
(using the 

adp discovery enable command).

If multicast routing is enabled in the IP network between the AP and the Master switch 
(which can be any one or more Aruba WLAN switches in the network), the IGMP-Join option 
should be enabled on the Aruba WLAN switch (using the 

command). If multicast routing is not enabled on the network, the Aruba WLAN switches 
need to be on the same broadcast domain as the AP or an “IP Helper” must be configured to 
direct the broadcast ADP packets to the Aruba WLAN switch. 

Once these discovery prerequisites are met, the switch will respond to APs with the IP address 
of the Master Aruba switch. The APs can then obtain their image and configuration.

To enable ADP on an Aruba WLAN switch, enter:

To enable IGMP-Join on an ADP multicast group on an Aruba WLAN switch, enter:

Note If you have location-specific configurations for your Access Points, you will 

need to apply this configuration information using AP Reprovisioning. 
Refer to the User Guide for details on AP Reprovisioning and see the fea-
ture description below.

AP Reprovisioning is the process by which APs are assigned, for example, location codes. 
Location codes are important for recalibration and triangulation. For details on AP 
Reprovisioning, see the User Guide.