User Guide

Deploying Access Points 5
Chapter 1
DHCP Server-derived AP Provisioning
When DHCP server-derived provisioning is the chosen option to provide the
AP with the master Alcatel Mobility Controller/loopback IP address, make
sure the DHCP server is configured to return the Alcatel vendor-specific
attribute information in its DHCP offer to the AP.
Configure the DHCP server to send the Alcatel master switch IP address
within the DHCP vendor-specific attribute option 43. The vendor class
identifier used to identify DHCP requests from Alcatel APs is
AlcatelAP.
N
OTE—DHCP requires the format and contents of the vendor class identifier to
be correct (
AlcatelAP).
If you select this option, skip the remainder of this section and proceed to
“Deploying APs in the Network”.
Alcatel Discovery Protocol (ADP)
NOTE—When APs are NOT on the same broadcast domain as the master Alcatel
Mobility Controller, you must enable multicast or employ IP Helper to
relay broadcast messages across the network for ADP to function cor-
rectly.
If ADP is the preferred option to provide the AP with the master Alcatel
Mobility Controller/loopback IP address, and the APs are on the same
broadcast domain as any master Alcatel Mobility Controller, no additional
network configuration is required. APs will send broadcast queries to which
a master Alcatel Mobility Controller will respond, along with its
switch/loopback IP address, and the APs will boot to this switch.
ADP is enabled on all Alcatel Mobility Controllers by factory default.
However, to ensure that ADP discovery is enabled on your switch use the
following command:
(Alcatel4324) #show adp config
ADP Configuration
-----------------
key value
--- -----
discoveryenable
igmp-joinenable
If ADP discovery is not enabled, use the following command to enable it:
(Alcatel4324) (config) #adp discovery enable
When APs are connected to Alcatel switches indirectly (via an IP-routed
network), the administrator needs to make sure that multicast routing is
enabled in the network, and that all routers are configured to listen for IGMP
joins from the master Alcatel Mobility Controller and to route these
multicast packets.
Make sure both ADP discovery and IGMP-join options are enabled. Verify
using the
show adp config command as shown above.
Should ADP discovery or IGMP-join options not be enabled: