Symbol Technologies AP-4131 Ieee 802.1d Spanning Tree Support, Site Topography, Site Surveys

Introduction

If AP D on Ethernet II has data for a device on Ethernet I, it requires a bridge or a repeater. In this configuration, AP C functions as a repeater. To ensure transmission to devices on Ethernet I, AP D has to use the AP A channel, DTIM and TIM interval.

The AP with lowest WLAP priority value is the Root AP. To manually designate AP B as the Root AP, assign it a WLAP Priority value less than 8000 Hex. See section 2.5: ”Configuring Radio Parameters” on page 71.

IEEE 802.1d Spanning Tree Support

This protocol creates a loop-freetopography with exactly ONE path between every device and LAN. This is the shortest path from the Root AP to each WLAP and LAN. If the connection between a WLAP and LAN fails, a new route is calculated and added to the tree. All packet forwarding follows the spanning tree path determined. APs in a network have to choose one AP as the Root AP.

1.2.3Site Topography

For optimal performance, locate MUs and APs away from transformers, heavy-duty motors, fluorescent lights, microwave ovens, refrigerators and other industrial equipment.

Signal loss can occur when metal, concrete, walls or floors block transmission. Locate APs in open areas or add APs as needed to improve coverage.

Site Surveys

A site survey analyzes the installation environment and provides users with recommendations for equipment and its placement. The optimum placement of 11 Mbps access points differs for 1 or 2 Mbps access points, because the locations and number of access points required are different.

AP-4131 Access Point Product Reference Guide 11