The AIR-CT5500-K9-8-3-150-0 represents a specific hardware and software combination within the Cisco 5508 Wireless Controller series. This platform has long served as the backbone for medium-to-large enterprise wireless networks, providing the management and scalability required for high-density environments. Understanding the Hardware: Cisco 5508 Series
is essentially the digital DNA for a specific version of the Cisco 5508 Wireless LAN Controller air-ct5500-k9-8-3-150-0
A useful piece of information:
This specific version (8.3.x) is a long-term stable "extended maintenance" release. However, be aware that 8.3.150.0 is an older build; Cisco recommends upgrading to the latest 8.3.x maintenance release (e.g., 8.3.152.0 or later) if staying on the 8.3 train, or moving to a newer recommended release like 8.5.182.0 or 8.10.x (depending on your APs and security requirements) due to bug fixes and security patches, including those for KRACK and FragAttacks vulnerabilities. Prerequisites:
1.0.19 or higher. (Check via show boot)., which is a "Maintenance Release" (MR) path for Cisco wireless deployments. Key Technical Details Hardware Platform: Cisco 5508 Wireless Controller (AIR-CT5508-K9). Software Version: 8.3.150.0 (often referred to as 8.3 MR5). File Extension: Typically found as AIR-CT5500-K9-8-3-150-0.aes Release Date: This specific build (MR5) was generally released around early 2019 according to Cisco Release Notes Critical Upgrade Information air-ct5500-k9-8-3-150-0
Product Description
This release was primarily a stability-focused update, providing critical bug fixes and finalizing features introduced in the 8.3 cycle.