Release Notes

24
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.2.176.0
OL-31336-01
Caveats
• CSCsg66040—After a software upgrade, controllers might experience intermittent access to the
management interface through HTTPS.
Workaround: Follow these steps to workaround the issue:
a. Make sure HTTPS is enabled on the controller’s management interface, reboot the controller
from the CLI, and monitor the last service if error messages appear after the controller prompts
you to enter a username and password to login.
b. Login with the relevant credentials and reconfigure the virtual interface with this CLI command:
config interface address virtual 1.1.1.1
c. Reboot the controller and make sure the Secure Web service shows up as OK.
d. Generate a certificate using this CLI command:
config certificate generate webauth
e. Click Yes when prompted and wait a few minutes for the certificate to generate.
f. Reboot the controller.
• CSCsg68046—The complete reason for a TFTP download failure needs to appear on the controller
GUI. If the controller cannot find the software file on the TFTP server during a software upgrade, it
reports that the transfer failed rather than that the file is not present.
Workaround: Make sure that the file and filename are entirely correct before upgrading, or upgrade
using the CLI to receive a more accurate reason for the failure. Further details are available if you
use the debug transfer all enable command prior to upgrade.
• CSCsg74578—If you change a controller’s management IP address, it is not sent to the access point
unless the access point is reset. As a result, multicasting does not work until the change is made on
the access point.
Workaround: Reset the access point so that it rejoins the controller and the controller updates the
access point with the new configuration.
• CSCsg84209—The export foreign controller is not deleting the client device when it receives a
HandoffEnd message.
Workaround: None.
• CSCsg87111—While editing a WLAN configured for WPA1+WPA2 with a conditional web
redirect to 802.1X, the MIB browser shows a commit failure error.
Workaround: Do not directly change from WPA1+WPA2+conditional web redirect to
802.1X+conditional web redirect. Instead, follow these steps:
a. Remove conditional web redirect and save your change.
b. Change Layer2 to 802.1X and save your change.
c. Change Layer3 to conditional web redirect and save your change.
• CSCsg88704—When you use the default controller setting of 512 for the controller database size,
the following problems may occur:
– If you attempt to add a MAC address to a very long MAC filter list, the following error message
appears: “Error in creating MAC filter.”
– If you add a large number of users to the local database, some user entries might be silently
ignored.
– If you add SSCs for the access points, at some point no more entries can be added, and the
following error message appears: “Authorization entry does not exist in Controller’s AP
Authorization List.”