Cisco Cisco 2106 Wireless LAN Controller Release Notes
11
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.1.171.0
OL-12979-01
New and Changed Information
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Dynamic frequency selection (DFS)—This release adds DFS functionality to the -A (U.S., Canada,
and Philippines), -N (Mexico, Australia, Hong Kong, India, and New Zealand), and -T (Taiwan)
regulatory domains. Prior to this release, DFS was already enabled for many other regulatory
domains, including -E, -J, and -K . DFS is enabled automatically on the following Cisco lightweight
access points that are configured for use in these regulatory domains: AP1130, AP1230, and
AP1240. DFS affects channels 52 to 64 and 100 to 140 of the 802.11a radio. The access points use
DFS to detect radar signals such as military and weather sources and then switch channels to avoid
interfering with them.
and Philippines), -N (Mexico, Australia, Hong Kong, India, and New Zealand), and -T (Taiwan)
regulatory domains. Prior to this release, DFS was already enabled for many other regulatory
domains, including -E, -J, and -K . DFS is enabled automatically on the following Cisco lightweight
access points that are configured for use in these regulatory domains: AP1130, AP1230, and
AP1240. DFS affects channels 52 to 64 and 100 to 140 of the 802.11a radio. The access points use
DFS to detect radar signals such as military and weather sources and then switch channels to avoid
interfering with them.
Note
FCC DFS is enabled only for AP1130s with a new FCC ID. Refer to the
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Addition of troubleshooting CLI commands—Four controller CLI commands have been added to
this release to aid in gathering information and debugging issues: show process cpu, show process
memory, show tech-support, and show running-config.
this release to aid in gathering information and debugging issues: show process cpu, show process
memory, show tech-support, and show running-config.
New CCXv4 and CCXv5 Features
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Client management frame protection (MFP)—Client MFP is now available for CCXv5 client
devices. In the previous 4.0 software release, only infrastructure MFP, which protects 802.11 session
management functions by adding message integrity check information elements (MIC IEs) to the
management frames emitted by access points, was available. In this release, the new client MFP
feature allows a client to detect a spoofed management frame at the first instance of an attack and
generate an intrusion detection system (IDS) alert to the device interface.
devices. In the previous 4.0 software release, only infrastructure MFP, which protects 802.11 session
management functions by adding message integrity check information elements (MIC IEs) to the
management frames emitted by access points, was available. In this release, the new client MFP
feature allows a client to detect a spoofed management frame at the first instance of an attack and
generate an intrusion detection system (IDS) alert to the device interface.
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Expedited bandwidth requests—This feature enables CCXv5 clients to attach a priority to specific
types of call requests, such as emergency 911 calls, or to specific devices that are tagged as high
priority, such as a senior executive’s call from an IP soft phone while on a business trip.
types of call requests, such as emergency 911 calls, or to specific devices that are tagged as high
priority, such as a senior executive’s call from an IP soft phone while on a business trip.
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Radio measurement requests enhancement—The radio measurement request feature has been
expanded to enable the controller to obtain information on the radio environment from the client’s
perspective (rather than from just that of the access point). In this case, the access points issue
unicast radio measurement requests to a particular CCXv4 client. The client then sends various
measurement reports back to the access point and onto the controller. These reports include
information on the radio environment and data used to interpret the location of the clients.
expanded to enable the controller to obtain information on the radio environment from the client’s
perspective (rather than from just that of the access point). In this case, the access points issue
unicast radio measurement requests to a particular CCXv4 client. The client then sends various
measurement reports back to the access point and onto the controller. These reports include
information on the radio environment and data used to interpret the location of the clients.
New Location Features
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Support for Cisco format RFID tags—The controller supports both Aeroscout format RFID tags
and now Cisco format RFID tags. The Location Appliance uses the Location Protocol (LOCP) to
receive chokepoint, battery status, vendor-specific, telemetry, and emergency information for Cisco
format tags.
and now Cisco format RFID tags. The Location Appliance uses the Location Protocol (LOCP) to
receive chokepoint, battery status, vendor-specific, telemetry, and emergency information for Cisco
format tags.
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Location enhancements—This release improves location accuracy by gathering received signal
strength indicator (RSSI) measurements from access points all around the client of interest. This
new controller CLI command enables you to view the current location configuration values: show
advanced location summary.
strength indicator (RSSI) measurements from access points all around the client of interest. This
new controller CLI command enables you to view the current location configuration values: show
advanced location summary.