Release Notes

30
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.2.176.0
OL-31336-01
Caveats
• CSCsl47720—The link test report for a CCX client generated using the controller GUI does not
provide enough information.
Workaround: Use the controller CLI. It always provides the correct link test report, except in cases
of a CCX client connected to a hybrid-HREAP access point broadcasting a centrally switched
WLAN.
• CSCsl48639—An IP address can be configured on a dynamic interface on a controller when that IP
address has already been assigned to another device on the network.
Workaround: Check the ARP table on the switch to see if the IP address is bound to a MAC address
on the network that is not the controller MAC address.
• CSCsl48776—Controllers sometimes incorrectly forward SSC authentication requests to a
RADIUS server.
Workaround: None.
• CSCsl52445—The internal web authentication page on the controller accepts up to 2,047 characters,
but the internal web authentication page in WCS accepts only 130 characters.
Workaround: If you need to enter more than 130 characters on the internal web authentication page,
use the controller interface instead of WCS.
• CSCsl57356—When an 802.11n client is associated to a 1250 series access point, sometimes the
client does not show up as 802.11n on the controller GUI and CLI. Instead, the controller shows the
associated client using the 802.11a or 802.11b protocol if using the 2.4-GHz or 5-GHz band,
respectively. However, the client software shows that the client is connected using the 802.11n
protocol and at 802.11n data rates.
Workaround: None.
• CSCsl67177—The Catalyst Express 500 (CE500) might lose connectivity to a 4400 series controller
when one port of the portchannel is shut down.
Workaround: Unplug and then plug in both Etherchannel links on the CE500 or the controller. Plug
in or unplug any device on the CE500.
• CSCsl70043—When a client device connects to a secure EAP WLAN and immediately switches to
an open WLAN, the access point sends a status 12 association response (which is normal) but sends
it from the wrong MAC address and BSSID.
Workaround: On the controller CLI, enter config network fast-ssid-change to allow the client
devices to connect without incident.
• CSCsl79260—Wired guest LAN clients do not get an IP address if DHCP proxy is disabled.
Workaround: Do not disable DHCP proxy.
• CSCsl79765—When connected to a controller, 1230 series access points containing AIR-MP31G
radios sometimes disable the radios and report that no channel is available.
Workaround: Contact Cisco TAC for more information. A Cisco internal-only procedure can be used
to update missing environment variables and burn them into a cookie.
• CSCsl95615—When a master controller exists on the network, an access point that is joined to a
secondary or tertiary controller keeps going back to discovery.
Workaround: Disable the master controller mode.
• CSCsm03461—A command is needed to show the ER image or bootloader version that is currently
running as well as the one that will be installed on the next bootup. Currently, the bootloader is used
to verify if an ER image or bootloader upgrade is successful. However, not all controllers include
the bootloader in the ER image.