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Glossary
Data Collector
DRM (dynamic radio/RF
management)
Langley
Summit WM Controller
Summit WM series Spy
Wireless AP
WM Access Domain
Services (WM-AD)
236
The Data Collector is an application on the Summit WM Controller
that receives and manages the Radio Frequency (RF) scan messages
sent by the Wireless AP. This application is part of the Summit WM
series Spy technique, working in conjunction with the scanner
mechanism and the Analysis Engine to assist in detecting rogue access
points.
The DRM feature consists of software on the Wireless AP that
provides dynamic radio frequency (RF) management. For Wireless
APs with the DRM feature enabled and on a common channel, the
power levels will be adjusted to balance coverage if a Wireless AP is
added to, or leaves, the network. The feature also allows wireless
clients to be moved to another Wireless AP if the load is too high. The
feature can also be set to scan automatically for a channel, using a
channel selection algorithm.
Langley is a Summit WM Controller, Access Points and Software term
for the inter-process messaging infrastructure on the Summit WM
Controller.
The Summit WM Controller is a rack-mountable network device
designed to be integrated into an existing wired Local Area Network
(LAN). It provides centralized control over all access points (both
Wireless APs and third-party access points) and manages the network
assignment of wireless device clients associating through access
points.
The Summit WM series Spy is a mechanism that assists in the
detection of rogue access points. The feature has three components: (1)
a radio frequency (RF) scanning task that runs on the Wireless AP, (2)
an application called the Data Collector on the Summit WM Controller
that receives and manages the RF scan messages sent by the Wireless
AP, (3) an Analysis Engine on the Summit WM Controller that
processes the scan data.
The Wireless AP is a wireless LAN thin access point (IEEE 802.11)
provided with unique software that allows it to communicate only
with a Summit WM Controller. (A thin access point handles the radio
frequency (RF) communication but relies on a controller to handle
WLAN elements such as authentication.) The Wireless AP also
provides local processing such as encryption. The Wireless AP is a
dual-band access point, with both 802.11a and 802.11b/g radios.
The WM Access Domain Services (WM-AD) technique is the Extreme
Networks way of mapping wireless networks to the topology of an
existing wired network. When you set up WM-AD on the Summit
WM Controller, you are defining subnets for groups of wireless users.
This WM-AD definition creates a virtual IP subnet where the Summit
WM Controller acts as a default gateway for wireless devices. This
technique enables policies and authentication to be applied to the
groups of wireless users on a WM-AD, as well as the collecting of
accounting information. When a WM-AD is set up on the Summit WM
Controller, one or more Wireless APs (by radio) are associated with it.
A range of IP addresses is set aside for the Summit WM Controller's
DHCP server to assign to wireless devices.
Summit WM20 User Guide, Software Release 4.2
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