User manual

AP User Manual January 2004
Software Release 4.1
Authentication Mode
If the optional Bandwidth and Authentication Manager (BAM) server is implemented, then the
operator can use this field to select from among the following authentication modes:
• Authentication Not Available if not using the BAM—no SM is allowed to
authenticate.
• Authentication Enabled—any SM can authenticate in the BAM server.
• Authentication Optional—an SM that is not compatible with the BAM server can
access the wireless network through this AP.
Authentication Server IPs
If the optional BAM server is implemented, then the operator enters the IP addresses of one or
more BAM servers that perform authentication for SMs that are registered to this AP.
Bridge Entry Timeout
The operator specifies 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.
An inappropriately low Bridge Entry Timeout setting may lead to temporary loss of
communication with some end users.
AP Background BER Mode
The operator chooses whether continuous BER (Bit Error Rate) data collection should be turned
on. When the AP Background BER Mode is turned on, the operator can read the bit error rate on
the subscriber side to assess the quality of a registered link. Two caveats apply to this setting:
• If the AP is in cluster, then the AP Background BER Mode must be set exactly the
same on all other modules in the cluster.
• When the AP Background BER Mode is turned on, the aggregate available bandwidth
decreases by approximately 200 kbps. For this reason, BER data collection should be
limited to diagnostic intervals.
Power Control
In Release 4.1 and later releases, the operator selects either
• Low to set the BH timing master to operate at 18 dB less than full power to reduce the
possibility of self-interference with a nearby module.
• Normal to allow the BH timing master to operate at full power.
Selection of Low can cause the BH to drop an active RF link to a module that is too far
from the low-power BH. If a link is dropped when Power Control is set to Low, the link
can be re-established by only Ethernet access.
See Power Reduction to Mitigate Interference on Page 51.
Community String
The operator specifies a control string that allows an SNMP management server to access SNMP
information. No spaces are allowed in this string. The default string is Canopy.
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