Release Notes

26
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.2.176.0
OL-31336-01
Caveats
Workaround: Change the WLAN QoS profile on both the internal controller and the anchor
controller to silver.
• CSCsi72767—A script runs each time you generate a dependency file, which makes the build very
slow.
Workaround: None.
• CSCsj03124—RLDP behavior is inconsistent when initiated from a Cisco 1250 series access point.
Workaround: Use access points other than the 1250 when RLDP needs to be used.
• CSCsj06245—Portions of the output of the show tech-support CLI command might be formatted
incorrectly, making the information difficult to read.
Workaround: None.
• CSCsj10755—When multicast mode multicast and IGMP snooping are enabled, the controller
periodically sends out IGMP query messages to the clients. This IGMP query is sent as individual queries
to each access point.
Workaround: None.
• CSCsj10945—The controller does not factor in the antenna gain when reducing the output power.
Workaround: Manually adjust the antenna gain, but this action can interfere with auto RF.
• CSCsj14255—Sometimes the multicast stream to wireless clients stops, and the upstream router
does not receive IGMP reports. This problem occurs when there are multiple IGMP requests on the
same VLAN and the controller responds only to the last query or when simultaneous IGMP queries
are sent from more than five VLANs and the controller responds to only the first five.
Workaround: None.
• CSCsj14304—With IGMP snooping enabled, MGIDs are assigned to reserved multicast addresses.
Workaround: Use an upstream ACL if packets with reserved multicast addresses need to be blocked.
• CSCsj17054—A misleading message appears on the controller GUI when you upload software or
certificates.
Workaround: Ignore the message and choose the correct options to upload files on the controller.
• CSCsj29501—When the session slot or telnet command times out on the supervisor on the Cisco
WiSM and you try to log in again, any character that you enter is duplicated.
Workaround: Use a direct console connection to the Cisco WiSM.
• CSCsj44861—An access point might transmit neighbor messages when it is not connected to a
controller.
Workaround: None.
• CSCsj54064—The downstream throughput is low when using a long packet size with ACLs on the
4400 series controller and the Catalyst 3750G Wireless LAN Controller Switch.
Workaround: None.
• CSCsj59237—The traffic stream metric (TSM) packet count is not reported correctly.
Workaround: None.
• CSCsj59441—Channel information for a rogue access point does not appear on the rogue access
point report.
Workaround: Enable the rogue access point trap for the registered controllers or view the channel
information on the controller.