Cooper Bussmann BU-945U-E 802.11 DSSS Example Extending range using WDS, Site B WDS Configuration

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Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual

Example – Extending range using WDS

One of the most common uses for WDS is to extend the range of the wireless network using repeaters. The diagram above illustrates a simple example where the four Access Points are all at fixed locations (each of the Access Points could, of course, have one or more client/stations connected). Since the locations are fixed, we can avoid the overhead of using the Bridge Spanning Tree protocol here by configuring fixed WDS links to ensure that each Access Point will only connect to the next Access Point in the chain. Any number of additional intermediate repeaters could be added to the chain in a similar way.

Site B WDS Configuration 1

The WDS configuration for unit B is shown above (this page is accessible via the Repeaters link from the configuration web pages). Site B is acting as an Access point for Site A, and is a client to Site C, likewise Site C is acting as an Access Point for Site B, and a Client for Site D. Since this example is a bridged network i.e., all devices on the same IP network and each link is using a different SSID, there is no possibility of loops

(i.e., multiple paths to the same location) therefore we do not need to incur the overhead of enabling STP (bridge spanning tree protocol).

We specify the devices at the other end of the WDS links by SSID only –MAC addresses can be used to specify point-to-point links to third party devices which do not support meshing via SSID.

In this example each Virtual connection is using the same Encryption method (WPA-PSK (AES) with a key of “Pass Phrase”, however as in example #1 the Encryption method and key can be different for each virtual link or even disabled (no encryption). Also the Spanning Tree Protocol is disabled as there is no possibility of network loops.

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3A1582Rev1.6

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Contents Read Retain FCC Notice Cooper Bussmann Application EngineeringPhone 800 a.m 500 p.m. Central, M-F 636 Fax 636 GNU Free Documentation License Important NoticeCooper Bussmann Contents Access Point vs Client BU-945U-E 802.11 630mW max powerNetwork Topology 3A1582Rev1.6 Bridge vs. Router Getting Started Quickly Antenna Installation GeneralLine-of-sight installations Bench test and Demo System SetupPlant and Factory Installations AntennasInstallation tips Omni-directional AntennasDirectional Antennas Power SupplySerial Connections RS232 Serial PortDB9 Connector Pinouts RS485 Serial Port3A1582Rev1.6 Discrete Digital Input/Output Start-up LED Indication Selecting a Channel802.11 900 MHz Channels 3A1582Rev1.6 Radio Throughput Data Throughput Based on Repeater HopsDefault Configuration Configuring the Unit for the First TimeAccessing Configuration for the First Time Method 1 Set PC to same network as BU-945U-E Power up the BU-945U-E moduleEnter the username user and default password user For local addresses3A1582Rev1.6 Quick Start Configuration Quick StartNetwork Configuration Configured Essid of the client Dhcp Server Configuration, Default is uncheckedWireless ports will have the same IP address Save Changes and ResetSecurity Menu Encryption keys must not be all zeros, i.e3A1582Rev1.6 Transparent Bridge Operation Radio ConfigurationNormal Operation Router OperationDrop back to non-bursting mode Bands Default is AutoSignal quality, etc Access pointDefault distance is 20km Dhcp Client ConfigurationRadio Mode BU-945U-E Only Supports the 802.11 Standard Channel SelectionDNS Server Configuration Dhcp Server ConfigurationSpanning Tree Algorithm / Redundancy Multiple AP Repeater Mesh Network 3A1582Rev1.6 Example Extending range using WDS Site B WDS ConfigurationExample Roaming with WDS Access Points Example Adding Redundancy3A1582Rev1.6 Example WDS Routed Network Mouse, to highlight the entire row WDS Connections Routing RulesSTP Specifies a destination host Wireless Message FilteringInformation at a later time 3A1582Rev1.6 IP Address Filter Configuration MAC Address Filter ConfigurationUtilize the radio link. All other devices are blocked ARP Filter Configuration Serial Port Configuration RS-232 PPP ServerSerial Gateway Server/Client/Multicast Serial Gateway Modbus Modbus RTU to TCPModbus TCP to RTU Gateway Serial MenuMulticast Pipe Manager Multicast Group IP Address Digital Input/OutputPort on the Client, i.e., Scada, DCS, etc To be the same on all communicating Multicast devicesModbus I/O Transfer 3A1582Rev1.6 Modbus TCP Configuration on I/O Transfer Menu Modbus TCP Client Mappings on I/O Transfer Menu Module Information ConfigurationModule Information Webpage Fields Remote Configuration System ToolsSetting a BU-945U-E to Factory Default Settings Configuration ExamplesExtending a Wired Network Client 2 Configuration Client 1 ConfigurationLAN B Configuration Client Configuration Access Point ConfigurationExtending Range of a Network with a Repeater Hop LED Indicator Condition Meaning Diagnostics ChartBoot Status LED Indication during Start-up RED ContinuouslyConnectivity Parameters Diagnostic Information AvailableConnectivity Site SurveyStatistics Network Traffic AnalysisConnection Information Internal Diagnostic Modbus Registers9999 Both Reset module enter Ffff to reset module 5014 STA OnlyStatistic Registers Utilities Testing Radio PathsPing 3A1582Rev1.6 Ipconfig ArpRoute Radio Transceiver Power SupplyGeneral Serial PortsSystem Parameters Input / Output statusWeb-Based Upgrade Appendix a Firmware UpgradesCSMA/CD ACKCSMA/CA DhcpIPX-SPX IeeeISN NIC SNRNAT SSLWAN VoIPVPN WEPDBm to mW Conversion Materials InstallationIperf Applications 3A1582Rev1.6 JPerf Application 3A1582Rev1.6 Preamble Terms and Conditions3A1582Rev1.6 No Warranty 3A1582Rev1.6 Customer Assistance