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3Com 3CRWE725075 Configuration Manual
3Com 3CRWE725075 Configuration Manual

3Com 3CRWE725075 Configuration Manual

Wds bridging and antenna installation
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WDS Bridging and Antenna Installation
3CRWE725075
3CRWE825075A
3CRWE875075A
3CRWE885075A
The 3Com Access Point 7250/8250/8750/8850 supports WDS Bridging, which provides a flexible way to
extend a wireless network. With WDS Bridging, you can increase your network to large, open locations
where pulling wire is cost-prohibitive, restricted, or physically impossible.
This guide explains how to configure a WDS link between two 3Com access points, and describes some
common installation scenarios for using WDS Bridging.
NOTE: For more information on the access points, including complete installation and
configuration instructions, see the Wireless LAN Access Points User Guide included on the
product CD in PDF format.
Understanding WDS Bridging Support
A Distribution System (DS) is a network (typically a wired network) that interconnects separate access
points into a single LAN. With WDS, the interconnection no longer needs to be physically wired.
WDS uses the wireless medium to interconnect separate access points, thereby eliminating the cost and
inconvenience that may hinder wire installations.
A WDS link can be used in a simple point-to-point link, a complex point-to-multipoint link, or a
multilayer topology.
Point-to-Point WDS Link
The following example shows a point-to-point WDS link configured between two access points.
Wireless Desktops
Configuration Guide
WDS Link
1
Wireless Desktops

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Summary of Contents for 3Com 3CRWE725075

  • Page 1 With WDS Bridging, you can increase your network to large, open locations where pulling wire is cost-prohibitive, restricted, or physically impossible. This guide explains how to configure a WDS link between two 3Com access points, and describes some common installation scenarios for using WDS Bridging.
  • Page 2: Configuration Guidelines

    Configuration Guidelines Before configuring the WDS settings, review the following guidelines: The WDS link can be set up between 3Com access points only. The pair of access points to be configured with a WDS link must be set to the same radio channel and SSID, and the link must be set up between 802.11a radios or...
  • Page 3: Safety Guidelines

    Safety Guidelines Only a licensed electrician with expert knowledge of outdoor installation and weather proofing techniques should perform an outdoor installation. Professional network personnel should oversee the entire installation. The importance of this is paramount, for the sake of compliance with local building codes, regulatory issues, and for the safety of people and equipment.
  • Page 4 Make sure the AP8850 access points are running the latest firmware. To use WDS Bridging, the access points must be running firmware version 3.0.14 or later. To download the latest firmware, go to the 3Com web site (www.3com.com). Configure the access points with the same Radio and Encryption settings.
  • Page 5 Configure the access points to establish the WDS link. On the access point that is to be configured as the Root-Bridge, open the access point Configuration Management System and click Advanced Setup. Open the WDS/STP Settings page and set the 802.11a radio to Root-Bridge mode. Click the Scan for WDS Link button.
  • Page 6 Remote Building Wireless Access with the AP8250 and 802.11g Upgrade Kit This installation scenario describes one layer of bridging with one Root-Bridge and one Child Bridge. This scenario is common, for example, in schools or universities where students or professionals in remote buildings need secure, high-bandwidth 802.11b or 802.11g access to the network.
  • Page 7 Make sure the AP8250 access points are running the latest firmware. To use WDS Bridging, the access points must be running firmware version 3.1.0 or later. To download the latest firmware, go to the 3Com web site (www.3com.com). Configure the access points with the same Radio and Encryption settings.
  • Page 8 Install the Root-Bridge. The Root-Bridge is installed in the main building that has the physical LAN link. Connect the Root-Bridge to the wired LAN. Connect the external 3CWE491 antenna to the SMA connector that is closest to the LEDs on the access point using the 3CWE580 cable. Mount the antenna in an area that has a direct “line of sight”...
  • Page 9: Safety Notices

    CAUTION: If the antenna is installed outside, you need to use a lightning arrestor. 3Com recommends the Huber Suhner lightning protector, item number 22652538. For more information on this product, go to http://products.hubersuhner.com.
  • Page 10 Copyright © 2005 3Com Corporation. All rights reserved. 3Com, and the 3Com Logo are registered trademarks of 3Com Corporation. All other company and product names may be trademarks of the respective companies with which they are associated. Part No. DIA72507-5AAA01...

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