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Air-ct5500-k9-8-3-150-0

Cisco Air-CT5500-K9-8-3-150-0: A Comprehensive Overview of the Wireless Controller

The Cisco Air-CT5500-K9-8-3-150-0 is a wireless controller designed to provide a centralized management platform for Cisco wireless access points. This device is part of the Cisco 5500 Series Wireless Controllers, which are engineered to support large-scale wireless networks. In this article, we will delve into the features, specifications, and benefits of the Cisco Air-CT5500-K9-8-3-150-0, as well as its applications and use cases.

Product Description

The Cisco Air-CT5500-K9-8-3-150-0 is a specific model of wireless controller that comes with an 8-port gigabit Ethernet switch, supporting up to 150 access points. The product code "Air-CT5500-K9-8-3-150-0" can be broken down as follows:

  • "Air-CT5500": This refers to the Cisco 5500 Series Wireless Controller.
  • "K9": This indicates that the device is a hardware model with a specific set of features and capabilities.
  • "8": This represents the number of gigabit Ethernet ports on the device.
  • "3": This refers to the software feature set, which includes support for advanced wireless features such as 802.1x authentication and guest access.
  • "150-0": This indicates that the device supports up to 150 access points.

Key Features and Specifications

The Cisco Air-CT5500-K9-8-3-150-0 wireless controller offers a range of features and specifications that make it an ideal solution for large-scale wireless networks. Some of its key features include:

  • Centralized Management: The device provides a centralized management platform for Cisco wireless access points, allowing administrators to manage and configure wireless networks from a single location.
  • Scalability: The Cisco Air-CT5500-K9-8-3-150-0 supports up to 150 access points, making it suitable for large-scale wireless deployments.
  • Gigabit Ethernet Ports: The device comes with 8 gigabit Ethernet ports, providing high-speed connectivity for wired devices.
  • Advanced Wireless Features: The device supports advanced wireless features such as 802.1x authentication, guest access, and wireless intrusion detection and prevention.
  • Redundancy and High Availability: The device supports redundancy and high availability features, ensuring that wireless networks remain operational even in the event of a hardware failure.

Benefits of the Cisco Air-CT5500-K9-8-3-150-0

The Cisco Air-CT5500-K9-8-3-150-0 wireless controller offers a range of benefits to organizations looking to deploy large-scale wireless networks. Some of its key benefits include:

  • Improved Network Management: The device provides a centralized management platform for wireless access points, making it easier to manage and configure wireless networks.
  • Increased Scalability: The device supports up to 150 access points, making it suitable for large-scale wireless deployments.
  • Enhanced Security: The device supports advanced wireless security features such as 802.1x authentication and wireless intrusion detection and prevention.
  • Reduced Downtime: The device supports redundancy and high availability features, ensuring that wireless networks remain operational even in the event of a hardware failure.

Applications and Use Cases

The Cisco Air-CT5500-K9-8-3-150-0 wireless controller is suitable for a range of applications and use cases, including:

  • Large-Scale Wireless Deployments: The device is ideal for large-scale wireless deployments, such as those found in universities, hospitals, and large enterprises.
  • Wireless Network Consolidation: The device can be used to consolidate multiple wireless networks into a single, centralized management platform.
  • Wireless Network Expansion: The device can be used to expand existing wireless networks, providing support for additional access points and wireless devices.

Conclusion

The Cisco Air-CT5500-K9-8-3-150-0 wireless controller is a powerful and feature-rich device that provides a centralized management platform for Cisco wireless access points. With its advanced wireless features, scalability, and redundancy and high availability capabilities, the device is ideal for large-scale wireless deployments. Whether you're looking to consolidate multiple wireless networks, expand an existing wireless network, or deploy a new wireless network, the Cisco Air-CT5500-K9-8-3-150-0 is a reliable and efficient solution.

Technical Specifications

Here are the technical specifications of the Cisco Air-CT5500-K9-8-3-150-0 wireless controller:

  • Model Number: Air-CT5500-K9-8-3-150-0
  • Device Type: Wireless controller
  • Ports: 8 gigabit Ethernet ports
  • Access Points Supported: Up to 150
  • Wireless Standards: 802.11a/b/g/n/ac
  • Security Features: 802.1x authentication, guest access, wireless intrusion detection and prevention
  • Redundancy and High Availability: Supported

Warranty and Support

The Cisco Air-CT5500-K9-8-3-150-0 wireless controller comes with a limited lifetime warranty and support from Cisco. The device is also supported by Cisco's extensive network of partners and resellers, providing customers with access to a wide range of services and support options.

Pricing and Availability

The pricing and availability of the Cisco Air-CT5500-K9-8-3-150-0 wireless controller vary depending on the region and country. Customers can contact Cisco or a local Cisco partner for more information on pricing and availability.

In conclusion, the Cisco Air-CT5500-K9-8-3-150-0 wireless controller is a powerful and feature-rich device that provides a centralized management platform for Cisco wireless access points. With its advanced wireless features, scalability, and redundancy and high availability capabilities, the device is ideal for large-scale wireless deployments.

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

The AIR-CT5500-K9 identifier refers to the Cisco 5508 Wireless Controller. This unit was designed to handle the increasing demands of mobile devices and bandwidth-intensive applications. It supports up to 500 access points and 7,000 clients, making it a robust choice for campus deployments. The hardware features eight 1-Gbps SFP ports, allowing for flexible connectivity and link aggregation to prevent bottlenecks. The Software Version: 8.3.150.0

The suffix 8-3-150-0 indicates the specific Cisco Wireless LAN Controller (WLC) software release running on the device. Version 8.3.150.0 is part of the 8.3 maintenance release train. This specific version is often sought after for its stability and its role as a "Long Lived Release." Key features of the 8.3 software branch include:

Enhanced Support for Wave 2 Access Points: Improved integration with 802.11ac Wave 2 hardware.

Apple and Cisco Partnership Features: Optimized roaming and connectivity for iOS devices through "Fast Lane" technology.

High Availability (HA): Robust stateful switchover capabilities to ensure minimal downtime during a controller failure.

Advanced Security: Integration with Cisco ISE and support for sophisticated encryption standards. Critical Considerations for Modern Networks

While the AIR-CT5500-K9-8-3-150-0 is a reliable workhorse, IT administrators must be aware of its lifecycle status. The Cisco 5508 WLC has reached its End-of-Life (EoL) and End-of-Support (EoS) milestones.

Security Risks: Older software versions like 8.3.150.0 may contain vulnerabilities that are no longer patched by Cisco.

Compatibility Limits: This controller cannot manage the newest Wi-Fi 6 (802.11ax) or Wi-Fi 6E access points.

Performance Gaps: Modern throughput requirements often exceed the 8 Gbps maximum capacity of the 5508 hardware. Deployment and Use Cases

Today, this specific configuration is most commonly found in legacy environments or as cost-effective lab equipment for CCNA/CCNP Wireless certification studies. In a production environment, it is typically used in a "maintenance mode" where the goal is to keep existing Wi-Fi 5 (802.11ac) infrastructure running until a full migration to Cisco Catalyst 9800 Series controllers can be completed.

For those maintaining these units, the 8.3.150.0 image is often considered a "safe harbor" release, balancing feature sets with the memory constraints of the aging 5508 hardware. However, it is vital to check the Cisco Bug Search Tool for any caveats related to your specific access point models before deploying this firmware.

The AIR-CT5500-K9 (Cisco 5508 Wireless Controller) is a legacy enterprise-grade platform designed to manage large-scale wireless networks. Running software version 8.3.150.0 marks the "end of the road" for this specific software line, as it was the final maintenance release for the 8.3 train. Software Version 8.3.150.0 Overview air-ct5500-k9-8-3-150-0

This release was primarily a stability-focused update, providing critical bug fixes and finalizing features introduced in the 8.3 cycle.

Key Features in 8.3 Train: Introduced Apple-Cisco fast lane for iOS device prioritization, Adaptive 802.11r for seamless roaming, and support for Wave 2 Access Points like the Cisco Aironet 2800 and 3800 series.

Lifecycle Status: Software maintenance for the 8.3 release officially ended on November 15, 2019.

Upgrade Path: For users requiring ongoing support, Cisco recommends migrating to the Release 8.5.x or 8.10.x software trains, which are the final supported paths for this hardware. Hardware Capabilities (5508 WLC)

Despite its age, the 5508 is remembered for its reliability in "mission-critical" environments.

Scalability: Supports up to 500 access points and 7,000 clients.

Performance: Designed for 802.11n environments with sub-second stateful failover (SSO) for high availability.

Form Factor: A standard 1RU rack-mount unit weighing approximately 20 lbs with redundant power supplies. Critical Lifecycle Milestones

The Cisco 5508 has officially transitioned into its sunset phase: Cisco 5500 Series Wireless Controllers Data Sheet

AIR-CT5500-K9-8-3-150-0 refers specifically to a software image file ( Cisco 5508 Wireless LAN Controller (WLC) , running version Cisco Community

This controller is a highly scalable platform designed for medium-to-large enterprises, supporting up to 500 access points 7,000 clients Key Features & Capabilities (v8.3.x) Performance & Scalability

: Optimized for 802.11ac and 802.11n performance with sub-second stateful failover for high availability. Adaptive 802.11r

: Supports fast roaming (Fast Transition) for Apple iOS 10 devices without explicitly enabling FT, maintaining compatibility with legacy clients. Security & Compliance

Full CAPWAP encryption between access points and the controller.

Rogue access point detection and protection against Denial-of-Service (DoS) attacks.

Management Frame Protection (MFP) to alert administrators of malicious users. Cisco OfficeExtend "Air-CT5500": This refers to the Cisco 5500 Series

: A secure, cost-effective solution for mobile teleworkers, supporting up to 500 remote access points. Enterprise Mesh

: Allows for dynamic wireless mesh networks in hard-to-wire indoor and outdoor areas. Installation Requirements

For the 5508 series, the software image is split into two parts which must both be installed: Base Install Image : The primary software. Supplementary AP Bundle

: Required if managing specific AP models such as the Aironet 1530, 1550 (128-MB), 1570, and 1600 series. Supported Access Points

Software version 8.3.x supports a wide range of legacy and modern hardware, including: Wave 2 APs : Aironet 1815, 1830, 1850, 2800, and 3800 series. Legacy APs

: Aironet 1040, 1140, 1260, 2600, 3500, 3600, and 3700 series. : This is the last supported version for the Cisco Aironet 1142 CLI commands for performing the TFTP/FTP transfer and upgrade?

The Cisco AIR-CT5508-K9 Go to product viewer dialog for this item.

(often referred to as the 5508 Wireless LAN Controller) is a cornerstone of enterprise-grade wireless networking, particularly when paired with stable software releases like 8.3.150.0. This specific hardware-software combination represents a critical infrastructure tool for managing high-density wireless environments, from university campuses to large-scale hospitals. Hardware Foundations: The Cisco 5508 Series The AIR-CT5508-K9

hardware is a 1RU (Rack Unit) platform designed for maximum scalability. It is capable of managing up to 500 access points and 7,000 clients simultaneously. Key physical features include:

Connectivity: Equipped with 8 SFP uplink ports for high-throughput network integration.

Resilience: Supports dual hot-swappable redundant power supplies, ensuring the network remains operational even during a power module failure.

Standards Support: Built to handle 802.11ac and 802.11n performance, delivering the reliability needed for toll-quality voice and streaming video. Software Stability: Release 8.3.150.0

The software version 8.3.150.0 is part of the AireOS 8.3 maintenance train, recognized for its stability and feature-rich environment for "legacy" controllers like the 5508. This version brought several critical enhancements: Overview [Cisco 5500 Series Wireless Controllers]

The string "air-ct5500-k9-8-3-150-0" refers to a specific software release for the Cisco 5500 Series Wireless LAN Controllers (WLC).

Here is the breakdown of the feature set and details for this specific firmware image:

Issue: APs stuck in "Downloading" state.

  • Diagnosis: Code mismatch; the AP has a different primary image.
  • Solution: Log into the AP console: debug capwap console cli. Then on WLC: config ap image predownload primary all.

1. Overview

  • File: AIR-CT5500-K9-8-3-150-0.aes
  • Applies to: Cisco 5508, 5520 (legacy compatibility), and vWLC (virtual) running AireOS
  • Version: 8.3.150.0 (8.3 MR5 / maintenance release)
  • Significance: One of the last stable releases for the 5500 series before End-of-Life (EOL). Supports 802.11ac Wave 1, ClientLink 2.0, and basic 802.11r/k/v.

Note: 5500 series hardware (5508/5510) reached EOL. Do not use this for 5520/8540 unless specifically required; newer 8.5+ code exists for them. and reapply to the WLAN.

4. Security Patches (KRACK & FragAttacks)

This image includes backported fixes for KRACK (Key Reinstallation Attack) and pre-emptive hardening against FragAttacks, making it PCI-DSS compliant for controllers locked into the 8.3 train.

Issue: FlexConnect ACLs not applying to local switching.

  • Diagnosis: ACL compilation error in the new parser.
  • Solution: Delete the ACL, recreate it with ASCII standard naming (no hyphens), and reapply to the WLAN.