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TAC Recommended AireOS Builds

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Updated:August 8, 2019
Document ID:200046

    Introduction

    This document helps customers to 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

    AireOS 8.9

    AireOS 8.9.100.0 and 8.9.111.0 are TAC supported releases.  The C9115AX/C9117AX/C9120AXI require 8.9; customers who do not have these access points should use 8.8 or earlier.

    AireOS 8.8

    For customers who require features or hardware (such as the AP4800 series) that are not supported in 8.5, TAC recommends 8.8.125.0, which also supports Inter-Release Controller Mobility (IRCM) compatibility with Cisco 9800 controllers.

    AireOS 8.7

    AireOS 8.7.106.0 is a short-lived release with no maintenance planned - see the End of Life bulletin.  Customers who require new features that are unavailable in 8.5 will need to run 8.7 or above.

    AireOS 8.6

    AireOS 8.6.101.0 is a short-lived release with no maintenance planned, and is deferred.  Customers who require new features that are unavailable in 8.5 will need to run 8.7 or above.

    AireOS 8.5

    TAC recommends AireOS 8.5.151.0.  Customers who do not require any post-8.5 features or hardware should stay with the 8.5 train.  8.5 is the last train for the following platforms: AP1600, AP2600, AP3500, AP3600, AP1552 (128MB version), AP802, WLC2504, WLC5508, WLC7510, WLC8510, WiSM2.
    For large deployments of 702 series access points, 8.5.151.0 is recommended.
    If Cisco 9800 controller compatibility with AireOS 8.5 is required, contact TAC for an "8.5 IRCM" special image for 5508/8510/5520/8540/3504, or send mail to wnbu-escalation@cisco.com.

    AireOS 8.4

    AireOS 8.4 is a short-lived release with no maintenance planned, and is deferred.  Any deployment that requires post-8.3 features or hardware should run 8.5 instead.

    AireOS 8.3

    For deployments that include hardware that is end of lifed in 8.3,  TAC recommends 8.3.150.0 or 8.3.150.x Escalation code (available now from TAC.)  8.3 is the last train for the following platforms: AP1040, AP1140, AP1260, AP1552 (64MB version), OEAP600.

    8.3.150.0 and 8.3.150.x Escalation code both include fixes for the following widely encountered bugs, beyond the 8.3.143.0 CCO release:

    AireOS 8.3.150.0

    AireOS 8.3.150.x Escalation

    • For 8.3 deployments with AP-COS, TAC recommends 8.3.150.x Escalation (available upon request.)
    • 8.3.150.x Escalation has all of 8.3.150.0's bugfixes, as well as several key bugfixes which are not present in 8.3.150.0, including the following:

    8.2 or latest 8.5, not 8.3, are recommended for large deployments of 702 series access points.

    AireOS 8.2

    For deployments that require features or hardware introduced after 8.0, TAC supports 8.2.170.0.  No further 8.2 releases are planned.

    8.2.170.0 or 8.2MR7 Escalation (available from TAC), or latest 8.5, are recommended for large deployments of 702 series access points.

    AireOS 8.1

    8.1.131.0 is the final maintenance release of AireOS 8.1, and is deferred. The recommended upgrade path for AireOS 8.1 customers is to 8.3 or, if feasible, 8.5.

    AireOS 8.0

    For AireOS 8.0 customers, TAC supports 8.0.152.0.  No further 8.0 releases are planned.

    • 8.0.150.0 and 8.0.152.0 are susceptible to the AID Errors problem (CSCve81314 (local mode APs) and CSCve81269 (FlexConnect APs)). This is fixed in 8.0MR5esc, available from TAC.  See the Field Notice for more details.

    Mobility Express

    For Mobility Express deployments, TAC recommends using the latest 8.5 or 8.8 release.


    Note on AP702 Issues

    TAC recommends that large scale deployments of AP702s run 8.2.170.0 or 8.2MR7 Escalation (available from TAC), rather than 8.3.  8.5 deployments should run 8.5.151.0.

    General AireOS Release Recommendations

    For general AireOS Release Recommendations, see:

    Related Information

    TAC Authored

    Contributed by Cisco Engineers

    • Aaron Leonard
      Cisco TAC Technical Leadership

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