User Manual
Table Of Contents
- Copyright
- Trademarks
- Product Configuration
- Introduction
- Overview
- Operating Mode Descriptions
- Setup
- Settings
- Preparing the Utility Software
- Utility Software Settings
- Setting Descriptions
- To Register or Set Up a New Access Point
- To Edit Settings for an Existing Access Point
- To Use Data scramble Functions for Better Security
- To Use SNMP Agent Functions
- To Use Spanning Tree
- To Access the APL from a Different Router
- Spanning Tree Algorithms (STA)
- What is an STA?
- STA Parameters
- Sample STA Application
- _
- All settings other than bridge priority settings are identical.
- The root bridge is determined by the priority settings of each ...
- The designated bridge for each LAN segment is determined by roo...
- The designated port for each bridge is determined by the design...
- The root port of each bridge is determined by its path cost to ...
- Ports that are neither designated ports nor root ports are back...
- _
- SNMP Agent Functions
- Troubleshooting
- Appendix
- Product Specifications
- Input/Output Interface
- Glossary
- _
- IEEE (Institute of Electrical Electronics Engineers)
- IEEE 802.11/ IEEE 802.11b
- MIB (Management Information Base)
- SNMP (Simple Network Management Protocol)
- Diversity
- Router
- Bridge
- LAN (Local Area Network)
- RSSI (Receive Signal Strength Indication)
- Spectrum diffusion transmission
- DS (Direct Sequence)
- CSMA/CA (Carrier Sense Multiple Access with Collision Avoidanc...
- Hidden Terminal Problem
- RTS (Request to Send)
- Roaming
- Peer-To-Peer
- AP (Access Point)
- User Unit
- ESS ID (Extended Service Set ID)
- Channel
- _
- Index
Overview
FX-DS110-APL
9
Multi-channel Operation
By changing channels on adjacent access points, it is possible to
obtain higher throughput per wireless terminal than when is
channels are not changed, even when the number of wireless
terminals is increased.
The 2.4G band (2400 to 2483.5 MHz) in which this product
operates is subdivided into 13 channels, numbered 1 to 13, by IEEE
standard 802.11. Because each frequency has sidebands around its
central frequency, sidebands on adjacent channels overlap.
Overlapping frequencies can adversely affect communications by
interference with each other's transmissions.
Refer to Figure 2.3 when selecting channels, to ensure that
frequency bands do not overlap.
The maximum number of channels that can be used simultaneously
without interference is four, by using a combination of channels 1,
6, and 11. Channel numbers can be set from 1 to 13 using utility
software.
Two wireless terminals on the same network cannot use the same
frequency.
Network
AP1
POWER
WRX
WLINK
LINK
RX
AP2
POWER
WRX
WLINK
LINK
RX
POWER
WRX
WLINK
LINK
RX
POWER
WRX
WLINK
LINK
RX
POWER
WRX
WLINK
LINK
RX
POWER
WRX
WLINK
LINK
RX
Channel 1 Channel 6
POWER
WRX
WLINK
LINK
RX
POW ER
WRX
WLINK
LINK
RX
Figure 2.2. Multi-channel Operation