Black Box LWN602A User Manual page 83

SmartPath EMS
Single Subnet
Layer-2 Broadcasting Domain
By default, the SmartPath APs obtain their network settings dynamically from a DHCP server. SmartPath AP3 reaches the DHCP
server after first forming a wireless link with the other two SmartPath APs. (A SmartPath AP in the position of SmartPath AP3 is
referred to as a mesh point, and SmartPath APs such as SmartPath AP1 and 2 are called portals.)
Within the framework of the CAPWAP protocol, SmartPath APs act as CAPWAP clients and SmartPath EMS as a CAPWAP server.
Because all devices are in the same subnet in this example, the clients can broadcast CAPWAP Discovery Request messages to
discover and establish a secure connection with the server automatically. During the connection process, each client proceeds
through a series of CAPWAP states, resulting in the establishment of a secure Datagram Transport Layer Security (DTLS)
connection. These states and the basic events that trigger the client to transition from one state to another are shown
in Figure 8-5.
NOTE: To illustrate all possible CAPWAP states, Figure 8-5 begins by showing a SmartPath AP and SmartPath EMS already in the
Run state. When a SmartPath AP first attempts to discover a SmartPath EMS—after the SmartPath AP has an IP address for
its mgt0 interface and has discovered or has been configured with the SmartPath EMS IP address—it begins in the
Discovery state.
For information about various ways that SmartPath APs can form a secure CAPWAP connection with a physical SmartPath EMS
appliance or a SmartPath EMS Virtual Appliance in the same or different subnets, and with SmartPath EMS Online, see "How
SmartPath APs Connect to SmartPath EMS" in this section.
Router/Firewall/DHCP Server
SmartPathAP1
(Portal)
= Wired Link
= Wireless Link
Figure 8-4. Connecting SmartPath APs to the network.
724-746-5500 | blackbox.com
Chapter 8: Basic Configuration Examples
Switch/PSE The switch delivers power to
SmartPath AP1 and Smart-
Path AP2 through PoE.
SmartPath AP3
(Mesh Point)
SmartPath AP3 receives power
HiveAP3 receives power
from a 100–240 VAC outlet.
from a 100-240 VAC outlet.
SmartPath AP2
(Portal)
Page 83