Cisco AIR-CT5520-50-K9 Access Points
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AIR-CT5520-50-K9 Cisco 10 Gigabits Wireless LAN Controller New

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Part Number#: AIR-CT5520-50-K9
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Short Description:
AIR-CT5520-50-K9 55520 Institute of Electrical and Electronics Engineers (IEEE) 802.11ac 10 Gigabits Wireless Local Area Network (LAN) Controller For Up To 50 Access Points | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Product Overview for the Cisco AIR-CT5520-50-K9 10 Gigabits Wireless

In the realm of wireless networking, the AIR-CT5520-50-K9 from Cisco stands out as a robust and high-performance Wireless LAN (Local Area Network) Controller. Specifically designed to handle 10 Gigabits of data, this controller plays a pivotal role in managing and optimizing wireless networks. In this detailed exploration, we will delve into the key features, functionalities, and benefits of the AIR-CT5520-50-K9, shedding light on its significance in the world of networking.

Unveiling the AIR-CT5520-50-K9

The AIR-CT5520-50-K9 is part of Cisco's portfolio of Wireless LAN Controllers, devices that play a crucial role in overseeing and orchestrating communication between wireless access points and various wireless clients. These controllers are the backbone of enterprise wireless networks, ensuring seamless connectivity, efficient traffic management, and robust security measures.

Key Features

  • 10 Gigabits of Throughput: One of the standout features of the AIR-CT5520-50-K9 is its ability to handle data at a staggering rate of 10 Gigabits per second. This high throughput is crucial in environments with a large number of wireless devices, enabling smooth and fast data transfer.
  • Scalability: The scalability of this Cisco controller is noteworthy. It can seamlessly scale to support a growing number of wireless devices, making it an ideal choice for enterprises experiencing expansion or increased demand for wireless connectivity.
  • Centralized Management: The AIR-CT5520-50-K9 serves as a centralized point for managing and monitoring wireless access points. This centralized management is essential for streamlining network administration tasks, ensuring consistent configurations, and facilitating efficient troubleshooting.
  • Advanced Security Protocols: Security is paramount in wireless networks, and the AIR-CT5520-50-K9 doesn't disappoint. It supports advanced security protocols such as WPA3 (Wi-Fi Protected Access 3) and provides a robust framework for implementing encryption and authentication measures, safeguarding sensitive data from unauthorized access.
  • High Availability: To ensure continuous and uninterrupted wireless connectivity, the AIR-CT5520-50-K9 is designed with high-availability features. Redundancy measures, failover capabilities, and load balancing contribute to a reliable and resilient wireless network infrastructure.

Use Cases

  • Enterprise Networks: The AIR-CT5520-50-K9 is tailor-made for enterprise environments where a large number of wireless devices need to connect seamlessly. Its high throughput and scalability make it an ideal choice for organizations with diverse wireless connectivity requirements.
  • Campus Environments: In educational institutions and large campuses, managing a multitude of wireless devices is a significant challenge. The centralized management and scalability of the AIR-CT5520-50-K9 address this challenge effectively, providing a robust foundation for wireless connectivity.
  • Healthcare Facilities: In healthcare settings where the demand for wireless connectivity is high and security is paramount, the AIR-CT5520-50-K9 ensures a reliable and secure wireless network. Its advanced security features align with the stringent privacy requirements of healthcare data.

Benefits of AIR-CT5520-50-K9

  • Enhanced Network Performance: The 10 Gigabit throughput of the AIR-CT5520-50-K9 significantly enhances network performance, ensuring that data is transmitted at high speeds and reducing latency in wireless communication.
  • Simplified Network Management: Centralized management capabilities streamline network administration tasks. This simplification results in increased operational efficiency, reduced downtime, and easier troubleshooting.
  • Cost-Effective Scalability: The scalability of the AIR-CT5520-50-K9 allows organizations to expand their wireless network infrastructure without incurring significant costs. This cost-effective scalability is particularly beneficial for growing enterprises.
  • Robust Security Measures: The advanced security protocols and features embedded in the controller contribute to a secure wireless network. This is essential for protecting sensitive data and ensuring compliance with regulatory requirements.

Challenges and Considerations

While the AIR-CT5520-50-K9 offers a plethora of benefits, it's essential to be aware of potential challenges and considerations:

  • Initial Setup Complexity: The initial setup of the controller, especially for users unfamiliar with Cisco's networking equipment, may pose a challenge. Adequate training and consultation with Cisco's support resources can mitigate this challenge.
  • Cost Considerations: While the scalability of the AIR-CT5520-50-K9 can be cost-effective in the long run, the initial investment may be substantial for smaller organizations. A thorough cost-benefit analysis is crucial for decision-making.
  • Regular Software Updates: To ensure optimal performance and security, regular software updates are necessary. Network administrators need to plan and execute these updates without disrupting ongoing operations.
Resiliency and High Availability

The AIR-CT5520-50-K9 Cisco 10 Gigabits Wireless LAN Controller is designed to provide high resiliency and availability for wireless networks. It offers many features to ensure that wireless connectivity is always available, even in the event of a failure or outage.

One key feature that contributes to the resiliency of the product is its built-in redundancy. The controller can be configured in a high availability (HA) pair, where two controllers work together to ensure that there is always a backup in case one controller fails. This ensures that wireless connectivity is not disrupted in the event of a failure.

Another important feature that contributes to the resiliency of the part is its ability to automatically failover to a backup controller. If the primary controller fails, the backup controller will take over seamlessly, without any interruption in wireless connectivity.

The model also includes advanced wireless security features such as WPA2-Enterprise, which provide an additional layer of protection for wireless networks. This helps to ensure that wireless networks are secure, even in the event of a failure or outage.

Compliant Standards 10 GB LAN Controller

The AIR-CT5520-50-K9 Cisco 10 Gigabits Wireless LAN Controller is a device that is compliant with various standards to ensure compatibility and functionality with other devices and networks. Some of these standards include:

  • IEEE 802.11n: This standard defines the physical layer and media access control (MAC) layer of wireless LANs (WLANs) operating in the 2.4 GHz and 5 GHz bands. The part supports this standard, which allows it to connect to devices that also support 802.11n, such as laptops, smartphones, and tablets.
  • IEEE 802.11ac: This standard is an extension of 802.11n, and it supports higher data rates and more efficient use of the 5 GHz band. The part supports this standard, which allows it to connect to devices that also support 802.11ac, such as newer laptops and smartphones.
  • IEEE 802.3: This standard defines the physical layer and MAC layer of wired Ethernet networks. The model supports this standard, which allows it to connect to wired networks and devices, such as servers and switches.
  • IEEE 802.3u: This standard defines the physical layer and MAC layer of Fast Ethernet networks. The model supports this standard, which allows it to connect to devices that also support 802.3u, such as servers and switches.
  • IEEE 802.3ab: This standard defines the physical layer and MAC layer of Gigabit Ethernet networks. The part supports this standard, which allows it to connect to devices that also support 802.3ab, such as servers and switches.

General Information about this Cisco AIR-CT5520-50-K9

  • Manufacturer: Cisco
  • Part Number or SKU# AIR-CT5520-50-K9
  • Product Series: 5500
  • Product Type: Wireless LAN Controller

Technical Specifications

  • Wireless LAN Standard: IEEE 802.11ac
  • Wireless Transmission Speed: 10 Gbps
  • Interfaces/Ports of Wireless LAN Controller: Up to 50 Access Points
  • Ethernet Port: Yes
  • Fast Ethernet Port: Yes
  • Gigabit Ethernet Port: Yes
  • Number of Network (RJ-45) Ports: 2
  • PoE (RJ-45) Port: No
  • VGA: No
  • HDMI: No
  • USB: No
  • Powerline: No
  • Management Port: Yes

Environmental Conditions

  • Operating Temperature: 41°F to 104°F (5°C to 40°C), derate the maximum temperature by 1.0°C per every 1000 ft. (305m) of altitude above sea level
  • Nonoperating Temperature: -40°F to 149°F (-40°C to 65°C)
  • Humidity (Operating): 10% to 90%; non-condensing at 82°F (28°C)
  • Humidity (Nonoperating): 5% to 93% at 82°F (28°C)
  • Altitude (Operating): 0 to 3000m (0 to 10,000 ft.)
  • Altitude (Nonoperating): 0 to 12,192m (0 to 40,000 ft.)
  • Electrical Input:
    • AC Input Frequency Range: 47 to 63 Hz
    • Input Voltage Range:
      • Minimum: 90 VAC
      • Maximum: 264 VAC
    • Maximum Power: 190W
    • Input Kilovolt-Amperes (kVA):
      • Minimum: 0.090 kVA
      • Maximum: 0.700 kVA
    • Heat Dissipation: 650 BTU/hr
  • Sound Power Level (Operation): A-weighted per ISO 7779 LpAm (dBA) at 77°F (25°C): 49.3


  • Simple Network Management Protocol (SNMP) v1, v2c, v3
  • RFC 854 Telnet
  • RFC 1155 Management Information for TCP/IP-Based Internets
  • RFC 1156 MIB
  • RFC 1157 SNMP
  • RFC 1213 SNMP MIB II
  • RFC 1350 TFTP
  • RFC 1643 Ethernet MIB
  • RFC 2030 SNTP
  • RFC 2616 HTTP
  • RFC 2665 Ethernet-Like Interface Types MIB
  • RFC 2674 Definitions of Managed Objects for Bridges with Traffic Classes, Multicast Filtering, and Virtual Extensions
  • RFC 2819 RMON MIB
  • RFC 2863 Interfaces Group MIB
  • RFC 3164 Syslog
  • RFC 3414 User-Based Security Model (USM) for SNMPv3
  • RFC 3418 MIB for SNMP
  • RFC 3636 Definitions of Managed Objects for IEEE 802.3 MAUs
  • Cisco private MIBs

Power Description

  • Power Source: Power Supply
  • Compatibility: CE Markings per directives 2004/108/EC and 2006/95/EC
  • Safety Standards:
    • UL 60950-1 Second Edition
    • CAN/CSA-C22.2 No. 60950-1 Second Edition
    • EN 60950-1 Second Edition
    • IEC 60950-1 Second Edition
    • AS/NZS 60950-1
    • GB4943 2001
  • EMC - Emissions Standards:
    • 47CFR Part 15 (CFR 47) Class A
    • AS/NZS CISPR22 Class A
    • EN55022 Class A
    • ICES003 Class A
    • VCCI Class A
    • EN61000-3-2
    • EN61000-3-3
    • KN22 Class A
    • CNS13438 Class A
  • EMC - Immunity Standards:
    • EN55024
    • CISPR24
    • EN300386
    • KN24

Outline, the AIR-CT5520-50-K9 Cisco 10 Gigabits Wireless LAN Controller stands as a powerful and versatile solution for managing wireless networks. Its impressive throughput, scalability, centralized management, and advanced security features make it a preferred choice for enterprise environments with diverse wireless connectivity needs. By understanding its key features, deployment considerations, and associated benefits and challenges, network administrators can harness the full potential of the AIR-CT5520-50-K9 to create a robust and efficient wireless network infrastructure.

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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