Alcatel-Lucent AOS-W 6.5.3.x - Page 581

Channel Types and Priority
A channel can belong to one or more channel types, depending on regulatory information and the activity that
is detected on the channel. The frequency of visits to a channel depends on the priority of the channel type(s)
to which it belongs. The following table describes the priority of channel types.
Channel Priority Channel Type
Description
One DOS Channels Channels where the AP is actively containing one more
rogue devices in AM mode are marked with an O flag in the
ARM CLI output (show ap arm scan-times).
Two Active Channels Channels where AP or Station activity has already been
detected are marked with an A flag in the ARM CLI output
and are visited in all scan-modes.
Three Reg-Domain Channels Channels that are in the AP’s regulatory domain are
marked with a C flag in the ARM CLI output and are visited
in all scan modes.
Four All Reg-Domain Channels Channels that belong to any country’s regulatory domain
are marked with a D flag in the ARM CLI output and are
visited only if the scan-mode is set to All-Reg or Rare.
Five Unconventional Scan
Channels
This new channel type category contains channels that
belong to any country’s regulatory domain, but with an
unconventional scan direction. These channels are marked
with a J or M flag in the ARM CLI output and are visited only
if scan-mode is set to All-Reg or Rare.
Six Rare Channels Channels that do not belong to any country’s regulatory
domain are marked with a Z flag in the ARM CLI output.
Rare channel scanning is done in the AMmode only if the
rare scan mode is selected in the AM Scanning profile.
Table 132: Channel Types and Priority
The country code in the AP Regulatory Domain profile determines supported channel and channel pairs for
that specific AP. If there is a change in the country code, the valid channel list is reset to the default value for
that country.
In the CLI
The show ap arm scan-times ap-name <ap_name> command is used to show scan state and flags for each
channel.
(host)(config) #show ap arm scan-times ap-name <ap-name>
Scanning Optimizations
The following optimizations are introduced in AOS-W 6.4.3, to enable the AP to achieve optimum RF
monitoring. Unconventional Scans and Relative Priority of Channel Type Categories optimization apply to all AP
types, but Channel Group Scanning optimization applies only to OAW-AP200 Series models. All optimizations
apply to AP and AM mode scanning.
Unconventional (direction) Scans
n Unconventional scans are 40MHz scans of a channel in the direction away from the channel pair. For
example, in the 44-48 channel pair:
l Conventional scans will be 44+ and 48-
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