Cisco Cisco 2106 Wireless LAN Controller Notas de publicación

DFS support in the -T regulatory domain—Taiwan does not require dynamic frequency selection 
(DFS) in the UNII-2 band, so until now the -T regulatory domain has not included support for it. 
However, Brazil (which now also uses the -T regulatory domain) does require DFS in the UNII-2 
band. The -T regulatory domain is being modified so DFS is required on channels 56, 60, and 64 for 
indoor access points. 

Channel 52 is not available in the -T regulatory domain.

The following DFS mechanisms, which already apply to channels 100 through 140 in the -T 
regulatory domain, also apply to UNII-2 channels 56 through 64:

The access point performs a 60-second scan for radar prior to initially sending any traffic on the 
channel. This scan may be bypassed if the controller detects a neighbor access point already 
operating on the same frequency.

Radar detection is constantly performed on the radio channel, as indicated in the output of the 
show controller CLI command for the access point radio.

If radar is detected on the channel, the access point moves to another channel.

The channel on which radar is detected is unavailable for 30 minutes.

For a complete list of regulatory domains supported for each product, refer to this URL:

These additional changes are applicable to controller software release 5.2.157.0:

Controller software releases 4.1 through 5.1 support both asymmetric and symmetric mobility 
tunneling. Controller software release 5.2.157.0 supports only symmetric mobility tunneling, which 
is now always enabled by default.

The WLAN override feature has been removed from both the controller GUI and CLI.

In controller software release 5.2.157.0, the WLAN override feature has been removed from 
both the controller GUI and CLI. If your controller is configured for WLAN override and 
you upgrade to controller software release 5.2.157.0, the controller deletes the WLAN 
configuration and broadcasts all WLANs. You can specify that only certain WLANs be 
transmitted by configuring access point groups. Each access point advertises only the 
enabled WLANs that belong to its access point group.

IGMP snooping can now be enabled on the 2100 series controllers and the Cisco Wireless LAN 
Controller Network Module for Cisco Integrated Services Routers.

The show run-config CLI command is replacing the show running-config command. Use show 
run-config to view the complete configuration of the controller or show run-config commands to 
view the list of user-configured commands on the controller.

The show ap cdp CLI commands have been modified to include the ap-name parameter. The new 
commands are as follows: