Aruba Networks AirOS v2.3, User Manual

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Deploying Access Points 5
Chapter 1
N
OTE
—
The APs request for DNS resolution is for the Fully Qualified Domain
Name
aruba-master
so make sure that this name is configured. After initial pro-
visioning, if the default domain name values are changed, make sure the AP and
switch domain name settings match.
Aruba recommends DNS server-derived AP configuration because it involves
minimal changes to the network and offers the greatest flexibility in placement of
APs.
If you select this option, skip the remainder of this section and proceed to
“Deploying APs in the Network” .
DHCP Server-derived AP Provisioning
When DHCP server-derived provisioning is the chosen option to provide the AP
with the master Aruba WLAN switch/loopback IP address, make sure the
DHCP server is configured to return the Aruba vendor-specific attribute
information in its DHCP offer to the AP.
Configure the DHCP server to send the Aruba master switch IP address within
the DHCP vendor-specific attribute option 43. The vendor class identifier used
to identify DHCP requests from Aruba APs is
ArubaAP
.
N
OTE
—
DHCP requires the format and contents of the vendor class identifier to be
correct (
ArubaAP
).
If you select this option, skip the remainder of this section and proceed to “Deploying
APs in the Network” .
Aruba Discovery Protocol (ADP)
N
OTE
—
When APs are NOT on the same broadcast domain as the master Aruba
WLAN switch, you must enable multicast or employ IP Helper to relay broadcast
messages across the network for ADP to function correctly.
If ADP is the preferred option to provide the AP with the master Aruba WLAN
switch/loopback IP address, and the APs are on the same broadcast domain as
any master Aruba WLAN switch, no additional network configuration is
required. APs will send broadcast queries to which a master Aruba WLAN
switch will respond, along with its switch/loopback IP address, and the APs will
boot to this switch.
ADP is enabled on all Aruba WLAN switches by factory default. However, to
ensure that ADP discovery is enabled on your switch use the following command:
(Aruba2400) # show adp config