Aruba Discovery Protocol - Aruba Networks Access Point Aruba AP 60/61 Installation Manual

Provisioning Access Points
Chapter 2
Each of these three methods is explained in the following sections. Use these
procedures for initial provisioning of APs. To change the configuration for APs
that have already been provisioned, go to
See the ArubaOS User Guide for more information on reprovisioning existing APs.
C
AUTION

Aruba Discovery Protocol

Aruba Discovery Protocol (ADP) is a plug and play provisioning tool for Aruba AP
60/61 Access Points. ADP performs two tasks:
Obtains the IP address of the TFTP server from which it downloads the AP
boot image
It discovers the IP address of the master Aruba Mobility Controller in the net-
work from which the AP can download its configuration.
The address of the TFTP server that ADP discovers is the equivalent of the
BOOTROM environment variable serverip. The IP address of the Aruba master
Mobility Controller is the equivalent of the environment variable master.
ADP can discover these values using DHCP or by discovery. In the case of DHCP ,
ADP relies on a DHCP server which is configured to return the IP address of the
Master Mobility Controller using the Vendor Specific Options in DHCP . To facilitate
ADP , Aruba APs include this Vendor Specific Option in the requested Option list,
and if the DHCP server is configured to return the IP address of the Master
Mobility Controller, 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 Mobility Controller 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 Mobility Controller (using
the adp discovery enable command).
If multicast routing is enabled in the IP network between the AP and the Master
Mobility Controller (which can be any one or more Aruba Mobility Controllers in
the network), the IGMP-Join option should be enabled on the Aruba Mobility
Controller (using the adp igmp-join enable command). If multicast routing is not
8 Aruba AP 60/61
Installation Guide
: When an AP60 powers up for the first time, the Mobility
Controller will recognize that it is detachable-antennas
capable. The network administrator must set the antenna
gain manually before the AP60 can function as an Access
Point. Until the antenna gain is set, the AP60 with
detachable antennas will function as an Air Monitor but
will not process wireless packets as an Access Point.
Refer to the ArubaOS User Guide for instructions on
manually setting antenna gain.
Maintenance > Program AP > Re-Provision
.
0500160
December 2005