Cisco Cisco 5520 Wireless Controller 기술 참조
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Cisco Aironet 1600/2600/3600 Series Access Point Deployment Guide
Cisco Aironet Series Access Points
Identifying the differences between CleanAir and CleanAir Express as it applies to the Cisco Aironet
1600 Series Access Point:
1600 Series Access Point:
•
CleanAir Express is currently available and requires controller code 8.0 or later. CleanAir Express
is a fully functional version of Cisco Systems CleanAir.
is a fully functional version of Cisco Systems CleanAir.
•
The main difference with CleanAir Express is that the Cisco Aironet 1600 Series Access Point
(sometimes referred to as the 1K series) has less dedicated memory for local CleanAir operations
and so the 1600 Series needs to off-load portions of the Spectrum Intelligence (SI) functions on the
1K series to host memory.
(sometimes referred to as the 1K series) has less dedicated memory for local CleanAir operations
and so the 1600 Series needs to off-load portions of the Spectrum Intelligence (SI) functions on the
1K series to host memory.
•
The Cisco 2K and 3K series have higher memory and processes the SI functions locally.
•
The AP 1600 contains the Cisco custom silicon CleanAir hardware chip and therefore can recognize
all the interferers that the 2K and 3K series Access Point can recognize.
all the interferers that the 2K and 3K series Access Point can recognize.
•
The core differences or limitations with CleanAir Express centers around the limitation of core
memory and processing power within the AP 1600. For this reason, the AP 1600 can only track 3
devices per radio interface, where the 2K and 3K series can track 10 devices per radio.
memory and processing power within the AP 1600. For this reason, the AP 1600 can only track 3
devices per radio interface, where the 2K and 3K series can track 10 devices per radio.
•
When scanning in monitor mode, 2K and 3K series Access Points can scan processing spectrum in
40 MHz segments and therefore those Access Points can spend less time in the scan cycle looking
for interferers (11.4%) compared to the AP 1600 (1K series) that must process the spectrum looking
at a smaller 20 MHz segment at a time and therefore the scan cycle is a bit longer at 22.8%.
40 MHz segments and therefore those Access Points can spend less time in the scan cycle looking
for interferers (11.4%) compared to the AP 1600 (1K series) that must process the spectrum looking
at a smaller 20 MHz segment at a time and therefore the scan cycle is a bit longer at 22.8%.
•
If the scan cycle is longer, then the detection time for other monitoring functions such as wIPS,
rogues, and so on is extended.
rogues, and so on is extended.
Table 1
Comparison of CleanAir Features in the 1600/2600/3600 Series
Spectrum Intelligence
CleanAir Express
1
1.
Available with 8.0 and higher versions of software.
CleanAir
CleanAir with WSSI
Access Point
AP 1600
AP 2600 or AP 3600
AP 3600 with WSSI
Module
Module
Detection
Yes
Yes
Yes
Classification
Yes
Yes
Yes
Mitigation
Yes
Yes
Yes
Location
Yes
Yes
Yes
Performance Optimized
Yes
Yes
Top Impacts and
Severity List
Severity List
Yes
Yes
Alert Correlation
Yes
Yes
Air Quality Index
Yes
Yes
Zone of Impact
Yes
Yes
Off Channel Scanning
Yes
Proactive Intelligent
Channel Switching
Channel Switching
Yes