User guide

Building Your Canopy Network March 2005
Through Software Release 6.1
Issue 1 Page 199 of 425
Canopy System User Guide
If the AP does not have authentication capability, then this parameter displays
Authentication Not Available.
Authentication Server IPs
If the optional BAM server is implemented and the AP has authentication capability, enter
the IP address of one or more BAM servers that perform authentication for SMs
registered to this AP. Enter these in order of primary, secondary, then tertiary.
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
subscriber side to assess the quality of a registered link. However, two caveats apply to
this setting:
◦ This parameter must be identically set for all APs in a cluster.
◦ When Send BER Stream is selected for this parameter, 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 AP to operate at 18 dB less than full power to reduce the
possibility of self-interference with a nearby module.
◦ Normal to allow the AP to operate at full power.
CAUTION!
Selection of Low can cause the AP to drop an active RF link to an SM
that is too far from the low-power AP. If a link is dropped 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 AP, you should immediately open
the Link Test page and perform a link test.