Introduction to C9800-CL-universalk9.17.09.05.CSCwj13190.SPA.bin

This Software Maintenance Upgrade (SMU) package addresses critical defects identified in Cisco IOS XE Software releases for the Catalyst 9800 Series Wireless LAN Controllers. Designed specifically for the Catalyst 9800-CL cloud-hosted platform, the update targets CSCwj13190 – a configuration persistence vulnerability affecting high-availability (HA) deployments.

Released in Q1 2025 as part of Cisco’s ongoing software maintenance cycle, this SMU applies to controllers running IOS XE 17.9.x releases. It maintains backward compatibility with existing network configurations while resolving stability issues that could lead to partial or complete configuration loss during stateful switchover (SSO) events.

Key Features and Improvements

Critical Bug Resolution

  • ​​CSCwj13190​​: Eliminates configuration loss scenarios caused by high CPU utilization in the replication manager (repm) process during HA SSO operations
  • Enhanced persistent storage handling for binary configuration files
  • Optimized database synchronization between active/standby controllers

Security & Stability Enhancements

  • Prevents unauthorized configuration rollbacks
  • Improves memory management for HA-related processes
  • Adds validation checks for persistent configuration archives

Compatibility Updates

  • Maintains full interoperability with:
    • Cisco Catalyst 9100/9120/9130 Access Points
    • Cisco DNA Center 2.3.5+
    • Cisco ISE 3.2 Patch 5+

Compatibility and Requirements

Supported Platforms Minimum IOS XE Version Required Bootflash Space
Catalyst 9800-CL 17.9.4 3.2 GB (per controller)

​​Critical Notes:​​

  1. Not compatible with controllers running short-lived release trains (17.4.x, 17.5.x)
  2. Requires removal of legacy SMUs using install remove inactive before deployment
  3. Must maintain identical HA interface configurations on both chassis

Accessing the Software Package

Authorized Cisco customers can obtain this SMU through:

  1. ​​Official Channels​​:

    • Cisco Software Download Center (CCO account required)
    • TAC-approved distribution portals

  2. ​​Verified Third-Party Source​​:
    Pre-validated copies available at IOSHub.net with MD5 verification:
    7ff2f59787530d2814874ea39416b46

For deployment guidance, refer to Cisco’s Software Maintenance Upgrade Best Practices for Catalyst 9800 Series technical note. Immediate assistance is available through Cisco TAC for licensed users experiencing configuration instability issues.

This advisory synthesizes information from Cisco Field Notice FN74222, IOS XE 17.9 Release Notes, and HA configuration guides. Always verify SMU applicability using the Cisco Software Checker before installation.

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