Table of Contents
Advertisement
Glossary
Controller, Access Points, and WM software terms and
abbreviations
Term
CTP
Data Collector
DRM (dynamic radio/RF
management)
Langley
324
Explanation
CAPWAP Tunnelling Protocol (CTP). The Wireless AP uses a UDP (User
Datagram Protocol) based tunnelling protocol called CAPWAP Tunnelling
Protocol (CTP) to encapsulate the 802.11 packets and forward them to the
Summit WM Controller.
The CTP protocol defines a mechanism for the control and provisioning of
Wireless APs (CAPWAP) through centralized access controllers. In
addition, it provides a mechanism providing the option to tunnel the
mobile client data between the access point and the access controller.
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.
Dynamic Radio Management (DRM) functionality of the Summit WM
Controller is used to help establish the optimum radio configuration for
your Altitude APs. DRM is enabled by default. The Summit WM
Controller's DRM:
Adjusts power levels to balance coverage if another Altitude AP, which
is assigned to the same SSID and is on the same channel, is added to or
leaves the network.
Allows wireless clients to be moved to another Altitude AP if the load
is too high.
Scans automatically for a channel, using a channel selection algorithm.
Avoids other WLANs by reducing transmit power whenever other
Altitude APs with the same channel, but different SSIDs are detected.
The DRM feature is comprised of two functions:
Auto Channel Selection (ACS) - ACS provides an easy way to optimize
channel arrangement based on the current situation in the field. ACS
provides an optimal solution only if it is triggered on all Altitude APs
in a deployment. Triggering ACS on a single Altitude AP or on a
subset of Altitude APs provides a useful but suboptimal solution. Also,
ACS only relies on the information observed at the time it is triggered.
Once an Altitude AP has selected a channel, it will remain operating
on that channel until the user changes the channel or triggers ACS.
Auto Tx Power Control (ATPC) - ATPC guarantees your LAN a stable
RF environment by automatically adapting transmission power signals
according to the coverage provided by the Altitude APs. ATPC can be
either enabled or disabled.
Langley is a Controller, Access Points, and WM software term for the
inter-process messaging infrastructure on the Summit WM Controller.
Summit WM User Guide, Software Version 5.3
Advertisement
Table of Contents
