Table Of Contents
Release Notes for Catalyst 6500 Series Switch and Cisco 7600 Series Wireless LAN Services Module Software Release 2.4.1
July 26, 2007
This publication describes the features, modifications, and caveats for the Catalyst 6500 series and Cisco 7600 series Wireless LAN Services Module (WLSM) software release 2.4.1.
This maintenance release does not introduce new features and does not resolve WLSM-related caveats. However, caveats were resolved in WDS, which affects the WLSM. Therefore, the purpose of this release is to maintain compatibility between WLSM software and access point WDS software.
Note For installation and configuration procedures for the WLSM, refer to the Catalyst 6500 series and Cisco 7600 series Wireless LAN Services Module documentation at this URL:
This document consists of these sections:
This section describes the system requirements for the Catalyst 6500 series and Cisco 7600 series WLSM software release 2.4.1:
The wireless LAN software requires the following hardware:
•Catalyst 6500 series switch or Cisco 7600 series router
•Supervisor Engine 720
•Catalyst 6500 series and Cisco 7600 series WLSM
Table 1 lists the wireless LAN software versions supported by Cisco IOS software.
In addition to the hardware and software requirements, the WLSM also requires the following:
•Cisco Aironet 1100, 1130AG, 1200, 1230AG, and 1240AG Series Access Points and Cisco Aironet 1300 Series Outdoor Access Point/Bridge using Cisco IOS Release 12.2(15)XR or Release 12.3(2)JA or later, Cisco Aironet 1130 Series Access Point using Cisco IOS Release 12.3(2)JA or later, or Cisco Aironet 1310 Outdoor Access Point/Bridge (configured in access point mode) using Cisco IOS Release 12.3(2)JA or later
•CiscoWorks Wireless LAN Solution Engine (WLSE) release 2.7(1) or later
WLSM Software Version to Cisco IOS Software Version Mapping
Table 2 shows the mapping between WLSM software versions and Cisco IOS Software versions.
Limitations and Restrictions
This section describes general limitations and restrictions:
•In software release 1.1.1 through 1.4.1, you can install one WLSM in a chassis.
•In software release 2.1.1, you can install two WLSMs, which requires Cisco IOS Release 12.2(18)SXF2.
•You cannot configure wireless clients in the same subnet as wired clients.
•You cannot map multiple SSIDs to a single network ID.
•You cannot configure QoS on tunnel interfaces in systems with a PFC3A. There is full QoS support in systems with a PFC3B or PFC3BXL.
•If you upgrade your Supervisor 720 to Cisco IOS Release 12.2(18)SFX2, you must be running Cisco Wireless LAN Services Module software version 1.4.3 or greater on your WLSM.
•The Cisco Catalyst 6500 Series Wireless LAN Services Module: Detailed Design and Implementation Guide contains an incorrect entry pertaining to default gateway IP addresses
The WLSM Failover—The "DHCP Configuration" section on page 56 states that the DHCP server must be configured to return both IP address to the client. This is not correct because the specific default gateway that a client uses is ignored by the access point and all traffic is sent to the upstream tunnel address. The tunnel address changes after the access point registers with the backup WDS and new tunnels are created by its corresponding Supervisor 720 module. Only one gateway is needed.
This discrepancy is documented in open caveat CSCej53619.
Open and Resolved Caveats in Software Release 2.4.1
These sections describe open and resolved caveats in Wireless LAN software release 2.4.1:
Open Caveats in Software Release 2.4.1
•CSCsi40733—(WLSM) WLSM: 1242 access points randomly fail a WLCCP CTK refresh
At 6-hour periods, a WLCCP link CTK refresh occurs, which should be a transparent action. Some times it fails (on the access point site) and the link needs to be re-established with a new WLCCP authentication. The failure occurs on 1242 access points, but does not seem to occur on 1231 access points.
•CSCsg69625—(WLSM) Access point does not mark the DSCP on the IP GRE header
With an access point communicating with the WLSM, the DSCP marking on the IP GRE is not set correctly.
Workaround: remove the command dot11 avvid priority from the configuration file.
Resolved Caveats in Software Release 2.4.1
•CSCsh43635—(WDS) Frequent tracebacks no longer occur on WDS Process
•CSCsi68728—(WDS) Traceback no longer occurs while clearing wlccp wds statistics
Open and Resolved Caveats in Software Release 2.4.0
These sections describe open and resolved caveats in wireless LAN software release 2.4.0:
Open Caveats in Release 2.4.0
•CSCsc05022—High CPU workaround for 240 mobility routing configuration
When a large number of mGRE tunnels are configured on the Supervisor 720 as part of the 240 mobility support feature, a large number of advertisements occur from the routing protocol. The advertisements can cause a high CPU utilization rate, which results in reduced performance.
To help alleviate this problem, first turn off all router protocol advertisements using the router's passive-interface default command. Then specify interfaces, VLANs, and networks for which you want advertisements to be broadcast. The following table shows this workaround for EIGRP:
Resolved Caveats in Release 2.4.0
There are no resolved caveats in release 2.4.0.
For additional information about Catalyst 6500 series switches and command-line interface (CLI) commands, refer to the following:
•Regulatory Compliance and Safety Information for the Catalyst 6500 Series Switches
•Catalyst 6500 Series Switch Installation Guide
•Catalyst 6500 Series Switch Module Installation Guide
•Catalyst 6500 Series Switch Software Configuration Guide
•Catalyst 6500 Series Switch Command Reference
•Catalyst 6500 Series System Message Guide
•Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide
•Catalyst 6500 Series Switch Cisco IOS Command Reference
•Release Notes for Cisco IOS Release 12.2SX on the Catalyst 6500 and Cisco 7600 Supervisor Engine 720
•For information about MIBs, refer to this URL:
Obtaining Documentation, Obtaining Support, and Security Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
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