Cisco Cisco 4404 Wireless LAN Controller Release Notes

CSCsk11540—When an access point joins a controller, duplicate messages are sent to the 
controller’s NPU.

CSCsk11550—When many access points join a Cisco WiSM, the NPU time message often appears 
on the console because BsnMDAframeMonitor does not run, the kernel socket buffer for control 
frames overflows, and ACKs from the NPU are dropped.

CSCsk11558—When the controller receives LWAPP-encapsulated packets with the fromDS and 
toDS bits set, these packets are incorrectly queued on the control socket, which could cause ACKs 
from the NPU to be dropped when the socket buffer fills up.

CSCsk13125—The debug controller CLI commands need to be filtered by MAC address in order to 
simplify the debugging process for large access point deployments.

CSCsk13145—The controller sometimes sends LWAPP requests to an unregistered access point.

CSCso30745—When a packet fails the admission control test, it is forwarded to the CPU instead of 
being discarded. This incorrect forwarding of many such packets could cause an overload of the 
CPU and a reaper reset.

CSCso62922—EAP authentication might fail for clients when the controller is operating under a 
heavy load. The client responds to the Identity request, but the controller does not to process it and 
times out the authentication.

CSCso81725—The controller’s broadcast module is replicating CDP packets to all connected access 
points even if multicast is disabled. In addition, the controller is replicating broadcast orphan 
packets from a client even when multicast and broadcast are disabled.

If you need information about a specific caveat that does not appear in these release notes, you can use 
the Cisco Bug Toolkit to find caveats of any severity. Click this URL to browse to the Bug Toolkit:

(If you request a defect that cannot be displayed, the defect number might not exist, the defect might not 
yet have a customer-visible description, or the defect might be marked Cisco Confidential.) 

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at

Click Product Support > Wireless. Then choose your product and Troubleshooting to find information 
on the problem you are experiencing.