Cisco Cisco 2000 Series Wireless LAN Controller
21
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.0.155.5
OL-10826-02
Caveats
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CSCsb87264—If WLAN ID 1 is not configured on the controller, a REAP access point broadcasts
the “Airespace” SSID after entering standalone mode. Clients can access this unsecured SSID and
use the REAP access point to access the network.
the “Airespace” SSID after entering standalone mode. Clients can access this unsecured SSID and
use the REAP access point to access the network.
Workaround: Be sure to properly configure WLAN ID 1.
•
CSCsb88588—Incorrect power levels are reported for access points when the controller is set to
country code SG.
country code SG.
Workaround: None for this release.
•
CSCsc02860—When users download the code image to a Cisco WiSM for the first time, the WiSM
fails to download the new image to flash memory.
fails to download the new image to flash memory.
Workaround: Download new code images to the WiSM a second time.
•
CSCsc03644—Cisco lightweight access points do not retain location parameters after a reboot.
Workaround: None at this time.
•
CSCsc04907—Resetting the access point to factory defaults does not clear the static IP address.
Workaround: Clear the access point’s static IP address by hand.
•
CSCsc05495—Controllers intermittently send a state attribute 24 in an access-request packet.
Workaround: Apply the Microsoft KB 883659 patch to IAS. The Microsoft patch may or may not
work. There is no workaround on the controller.
work. There is no workaround on the controller.
•
CSCsc11660—The current country screen is not 100% accurate for all deployment scenarios, which
may cause confusion in some instances.
may cause confusion in some instances.
Workaround: None at this time.
•
CSCsc20416—ACU site survey disassociates other clients in the LWAPP environment.
Workaround: None at this time.
•
CSCsc65354—IDS is unable to detect a deauthentication flood attack under certain conditions.
Workaround: None at this time.
•
CSCsc68154—The controller’s error log repeatedly displays the “Got an idle-timeout message from
an unknown client” error message for some unknown reason.
an unknown client” error message for some unknown reason.
Workaround: None at this time.
•
CSCsd02837—The CB21AG client adapter may not send re-association requests with CCKM keys
when roaming between controllers.
when roaming between controllers.
Workaround: Use a different client adapter.
•
CSCsd25491—The management IP address of a controller incorrectly sends an ARP request for a
client IP address on a WLAN subnet over the wired interface. The ARP request is not answered
because the management IP address and the client WLAN are on different subnets.
client IP address on a WLAN subnet over the wired interface. The ARP request is not answered
because the management IP address and the client WLAN are on different subnets.
Workaround: None at this time.
•
CSCsd27529—Static WEP does not operate properly for a REAP access point in standalone mode.
Workaround: None at this time.
•
CSCsd47199—A session timeout of zero (infinity) may not operate as configured.
Workaround: Set the session timeout to 65535 seconds.
•
CSCsd52483—When you make changes in the boot loader of a 2006 controller or a Controller
Network Module, the bootup process may halt, and the controller may stop responding.
Network Module, the bootup process may halt, and the controller may stop responding.
Workaround: None at this time. The controller must be returned for repair through the RMA process.