User guide

Building Your Canopy Network March 2005
Through Software Release 6.1
Issue 1 Page 241 of 425
Canopy System User Guide
As shown in Figure 91, the Configuration page continues with the following parameters.
SM Scan Privacy
When the SM Scan Privacy feature is enabled, you can use this field to suppress the
display of data about this BHM on the AP Eval Data page of the registered BHS.
Bridge Entry Timeout
Specify the appropriate bridge timeout for correct network operation with the existing
network infrastructure. The Bridge Entry Timeout should be a longer period than the ARP
(Address Resolution Protocol) cache timeout of the router that feeds the network.
CAUTION!
An inappropriately low Bridge Entry Timeout setting may lead to
temporary loss of communication with some end users.
AP Background BER Mode
Specify whether continuous BER (Bit Error Rate) data collection should be done. When
Send BER Stream is selected for this parameter, you can read the bit error rate on the
BHS side to assess the quality of a registered link. However, when Send BER Stream is
selected, the aggregate available bandwidth decreases by approximately 200 kbps. For
this reason, you should limit BER data collection to diagnostic intervals.
Power Control
In Release 4.1 and later releases, select either
◦ Low to set the BHM to operate at 18 dB less than full power to reduce the
possibility of self-interference with a nearby module.
◦ Normal to allow the BHM to operate at full power.
CAUTION!
Selection of Low can cause a link to a distant BHS to drop. If a link
drops when Power Control is set to low, the link can be re-established by
only Ethernet access.
If you select Low and save the changes and reboot the BHM, you should immediately
open the Link Test page and perform a link test.
Community String
Specify a control string that allows an Network Management Station (NMS) to access
SNMP information. No spaces are allowed in this string. The default string is Canopy.