Wireless Access Point
386 Configuring the Wireless AP
Procedure for Setting Up WDS Client Links
1. Host Link Stations: Check the Allow checkbox to instruct the AP to
allow stations to associate to IAPs on a host AP that participates in a WDS
link. The WDS host IAP will send beacons announcing its availability to
wireless clients. This is disabled by default.
2. Roaming RSSI Threshold: If an AP is deployed on a mobile site (on a
train, for example), you can use WDS to implement a wireless backhaul
that will roam between APs at fixed locations. When another candidate
AP for WDS host target is found, the client link will roam to the new AP if
its RSSI is stronger than the RSSI of the current host connection by at least
the Roaming RSSI Threshold. The default is 6 dB.
3. Roaming RSSI Averaging Weight: This weight changes how much the
latest RSSI reading influences the cumulative weighted RSSI value
utilized in checking the threshold (above) to make a roaming decision.
The higher the weight, the lower the influence of a new RSSI reading.
This is not exactly a percentage, but a factor in the formula for computing
the current RSSI value based on new readings:
Once some IAP has been selected to act as a WDS client link, no other
association will be allowed on that IAP. However, wireless associations will
be allowed on the WDS host side of the WDS session.
In situations like the one in the next step, where WDS is used by an AP
mounted on a high speed train, STP can add significant delay (often on the
order of 30 to 60 seconds) while initially analyzing network topology. In
such a situation, it may be desirable to disable STP. See “Management
Control” on page 237.
Caution: If Spanning Tree Protocol (“Management Control” on page 237) is
disabled and a network connection is made on the WDS Client AP’s Gigabit
link that can reach the WDS Host AP, broadcast and multicast packets will
not be blocked. A broadcast storm may cause a network outage.
To Next Page
Loading...
Need help?
General
