User guide

March 2005 Building Your Canopy Network
Through Software Release 6.1
Page 208 of 425 Issue 1
Canopy System User Guide
When you select Enable, this feature
◦ disallows the SM user to access the link, as in the case where the user account
is delinquent.
◦ allows the operator to partition the network for troubleshooting or another
analytical or operational function.
When you select Disable, this feature is deactivated.
Link Negotiation Speeds
Specify the type of link speed 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
Specify the frequency that the SM scans to find the Access Point. The frequency band of
the SM affects what channels you should select.
IMPORTANT!
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, select frequencies that are at least
5 MHz apart.
In a 2.4-GHz SM, this parameter displays all available channels, but has only three
recommended channels selected by default. See 2.4-GHz AP Cluster Recommended
Channels on Page 101.
In a 5.2- or 5.4-GHz SM, this parameter displays only ISM frequencies. In a 5.7-GHz SM,
this parameter displays both ISM and U-NII frequencies. If you select all frequencies that
are listed in this field (default selections), then the SM scans for a signal on any channel.
If you select only one, then the SM limits the scan to that channel. Since the frequencies
that this parameter 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 Considering Frequency Band Alternatives on
Page 100.
(The selection labeled Factory requires a special software key file for implementation.)
Color Code
Specify 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. Instead, color code allows you to
segregate an individual network or neighboring Canopy networks.
Color code also allows you 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).