User manual

SM User Manual January 2004
Software Release 4.1
The operator selects either
• Enable to activate this feature.
• Disable to deactivate this feature.
Link Negotiation Speeds
The operator specifies the type of link speed desired for the Ethernet connection. The default for
this parameter is that all speeds are selected. The recommended setting is a single speed
selection for all APs, BHs, and SMs in the operator network.
Custom RF Frequency Scan Selection List
The operator specifies the frequency that the SM scans to find the access point. The frequency
band of the SM affects what channels the operator selects.
In the 2.4-GHz frequency band, the SM can register to an AP that transmits on a
frequency 2.5 MHz higher than the frequency that the SM receiver locks when the scan
terminates as successful. This establishes a poor-quality link. To prevent this, the
operator should select frequencies that are at least 5 MHz apart.
In a 2.4-GHz SM, this field displays all available channels, but has only three recommended
channels selected by default. See 2.4-GHz AP Cluster Recommended Channels on Page 61.
In a 5.2-GHz SM, this field displays only ISM frequencies. In a 5.7-GHz SM, this field displays both
ISM and U-NII frequencies. If the operator selects all frequencies that are listed in this field (default
selections), then the SM scans for a signal on any channel. If the operator selects only one, then
the SM limits the scan to that channel. Since the frequencies that this field offers for each of these
two bands are 5 MHz apart, a scan of all channels does not risk establishment of a poor-quality link
as in the 2.4-GHz band.
A list of channels in the band is provided in one of the following sections:
• 2.4-GHz Channels on Page 60.
• 5.2-GHz Channels on Page 60.
• 5.7-GHz Channels on Page 62.
(The selection labeled Factory requires a special software key file for implementation.)
Color Code
The operator specifies a value from 0 to 254. For registration to occur, the color codes of the SM
and of the AP must match. Color code is not a security feature. Color code allows the operator to
segregate an individual network or neighbor Canopy networks.
Color code also allows the operator to force an SM to register to only a specific AP, even if the SM
can reach multiple APs. On all Canopy modules, the default setting for the color code value is 0.
This value matches only the color code of 0 (not all 255 color codes).
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