This document describes the way in which the customers can find the most reliable Wireless LAN Controller software available. The Cisco Wireless TAC (Technical Assistance Center) recommends AireOS builds from each train of released AireOS software. These recommendations may be updated on a weekly basis.
Escalation Builds/Maintenance Interims
In some cases, the TAC recommended build might be an escalation or maintenance interim/beta build. Such builds are not available on CCO (Cisco.com), but have important bug fixes (beyond what is available in CCO code), and will be operational in production at customer sites for several weeks.
Note that, in some cases, the beta/escalation/interim build will contain support for unreleased features and/or hardware. TAC does not support unreleased features or hardware - until official release, such support will come from the Business Unit (BU).
For released features and platforms, these builds are fully supported by TAC and the BU.
In order to request a TAC recommended escalation/maintenance interim build, open a Cisco TAC case on your Wireless LAN Controller contract.
TAC Recommended Builds
TAC recommends 188.8.131.52 (latest CCO release). No further 7.0 releases are planned. The recommended migration path is to AireOS 8.0, if the hardware supports it.
TAC recommends 184.108.40.206 (latest CCO release). No further 7.4 releases are planned. The recommended migration path is to AireOS 8.0.
TAC does not recommend any 7.6 CCO release, and Cisco does not plan to release any more 7.6 maintenance releases on CCO. The recommended upgrade path for AireOS 7.6 customers is to 8.0.
Customers with 1700/2700/3700 access points should consider running the latest 8.2 release, or an 8.0 escalation special (available from TAC) due to CSCus83638 (AP 5Ghz Radio Beaconing but not accepting Client Assoc.)
220.127.116.11 is the final maintenance release of AireOS 8.1. The recommended upgrade path for AireOS 8.1 customers is to 8.2.
For deployments that require new features or hardware support, such as 5520 and 8540 controllers, or AP-COS (1800/2800/3800), TAC recommends the 18.104.22.168 release.
In some cases, TAC will provide an 8.2MR5esc or 8.2MR6interim image, for post-22.214.171.124 fixes..
For deployments that require support for the AP1560/AP1815i, or post-8.2 features (such as Mobility Express on 2800/3800 series, QoS Fastlane, Adaptive 802.11r), AireOS 126.96.36.199 and 188.8.131.52 are BU and TAC supported releases. TAC recommends that customers who do not require 8.3 features use the latest 8.2 build.
Customers that use TSPEC (typically VoWLAN clients such as 792x, 882x, Spectralink), and deployments that use AVC traffic marking, should avoid 184.108.40.206 due to CSCve20123. If such customers want to use 8.3, TAC can provide an 8.3MR2esc build with the fix.
For deployments that require support for AP-COS mesh, AP1815w, or new Mobility Express features, AireOS 220.127.116.11 is a BU and TAC supported release. TAC recommends that customers who do not require 8.4 features use the latest 8.2 build.