Users Guide

52 | The Basic User-Centric Networks Dell PowerConnect ArubaOS 5.0 | User Guide
Using the Dell Discovery Protocol (ADP)
ADP is enabled by default on all Dell APs and controllers. To use ADP, all APs and controllers must be connected
to the same Layer-2 network. If the devices are on different networks, a Layer-3 compatible discovery mechanism,
such as DNS, DHCP, or IGMP forwarding, must be used instead.
With ADP, APs send out periodic multicast and broadcast queries to locate the master controller. You might
need to perform additional network configuration, depending on whether the APs are in the same broadcast
domain as the controller:
z If the APs are in the same broadcast domain as the master controller, the controller automatically responds to
the APs’ queries with its IP address.
z If the APs are not in the same broadcast domain as the master controller, you must enable multicast on the
network (ADP multicast queries are sent to the IP multicast group address 239.0.82.11) for the controller to
respond to the APs’ queries. You also must make sure that all routers are configured to listen for Internet
Group Management Protocol (IGMP) join requests from the controller and can route these multicast packets.
To verify that ADP and IGMP join options are enabled on the controller, use the following CLI command:
(host) #show adp config
ADP Configuration
-----------------
key value
--- -----
discovery enable
igmp-join enable
If ADP or IGMP join options are not enabled, use the following CLI commands:
(host) (config) #adp discovery enable
(host) (config) #adp igmp-join enable
Provisioning APs for Mesh
The information in this section applies only if you are configuring and deploying APs in a mesh networking
environment. If you are not, proceed to “Installing APs” on page52.
Before you install APs in a mesh networking environment, you must do the following:
z Define and configure the mesh cluster profile and mesh radio profile before configuring an AP to operate as a
mesh node. An AP configured for mesh is also known as a mesh node.
z Provision one of the following mesh roles on the AP:
 Mesh portal—The gateway between the wireless mesh network and the enterprise wired LAN.
 Mesh point—APs that can provide traditional Dell WLAN services (such as client connectivity, intrusion
detection system (IDS) capabilities, user roles association, LAN-to-LAN bridging, and Quality of Service
(QoS) for LAN-to-mesh communication) to clients on one radio and perform mesh backhaul/network
connectivity on the other radio. Mesh points can also provide LAN-to-LAN bridging through their
Ethernet interfaces and provide WLAN services on the backhaul radio
 Remote Mesh Portal: The Remote Mesh Portal feature allows you to configure a remote AP at a branch
office to operate as a mesh portal for a mesh cluster.
For detailed provisioning guidelines, caveats, and instructions, see Chapter 7, “Secure Enterprise Mesh” on
page189
.
Installing APs
Use the AP placement map generated by RF Plan to install APs. You can either connect the AP directly to a port
on the controller, or connect the AP to another switch or router that has layer-2 or layer-3 connectivity to the
controller.