Cisco Cisco 2106 Wireless LAN Controller

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 lists open caveats in controller software release 6.0.202.0.

CSCts70063

Headline: bootup "Error (xx) found in fsck check - attempt to repair"

Symptom: When a 5500 series wireless LAN controller boots, a message similar to 
the following may appear on the console:

Error (2048) found in fsck check - attempt to repair

The specific error number within parenthesis might vary.

Conditions: Booting up a 6.0 release of controller software on a Cisco 5508 
Controller manufactured from June (serial number range FCW1511xxxx or later).

Workaround: Ignore the message. This condition is strictly cosmetic; the error has 
no effect on the functioning of the controller.

If you upgrade to a 7.0 release of the controller software, the message does not 
appear.

CSCsw93671

Headline: Controller sources packets for web auth clients from management or 
service-port int.

Symptom: When you see traffic on the network being sourced from the service port, 
all these packets are either SYN, ACK, or FIN ACK packets with either a source port 
of TCP 2006 or TCP 2008. The service port is not connected to the network and 
when you look through the sniffer captures, there is no packet going to the controller 
that would cause these packets to be sent.

Condition: The condition seems to happen rarely when a client associated to 
web-auth enabled WLAN sends only a TCP SYN for a web-session and terminates 
the connection.

Workaround: None.