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From the Publisher

Wireless networks are continuously evolving: the technology is changing at a very fast pace from Wi-Fi 4/5 to Wi-Fi 6/6E and to Wi-Fi 7, which is not too far away on the horizon. The applications and the services enabled on the Wi-Fi network are evolving as well, becoming more and more business-critical with stringent requirements on performance and latency. The number of devices that needs to be supported is increasing, and high-density deployments are becoming the norm.

To meet these fast-changing requirements, you need a wireless network that can quickly adapt, that is secure and can perform and scale to higher standards, and that can be easily and programmatically managed. This is the reason behind the introduction of the next-generation wireless controller, the Catalyst 9800 (C9800), which is a critical element of the new Catalyst wireless stack.

The C9800 is based on a new modern and secure operating system, Cisco IOS-XE, and it’s built from the ground up for Cisco intent-based networks to deliver on the next wave of wireless innovations.

Who should read this book?

This book is for all readers who are passionate about wireless and want to learn how to design, deploy, and manage a Cisco Catalyst wireless network. The book has been written with three groups of readers in mind:

Technical Decision Makers (TDM): The book familiarizes TDMs with a deep technical view of the Catalyst 9800 wireless controller and helps you in addressing your specific business needs.Network architects: The book provides technical details on the software and hardware architecture of the Catalyst wireless solution so that you can better understand how to design your own network and implement the features and functionalities you need.Network operators and IT professionals: The book provides useful tools and tips for setting up, configuring, and monitoring and troubleshooting the network, making your work as a network operator easier.

How is this book organized?

The book layout follows the lifecycle of the design and deployment of a Catalyst wireless network and is divided into three parts:

Designing and bringing up the network: Day ZeroConfiguring and deploying: Day OneMonitoring and troubleshooting: Day Two/Day N

Most of the theory is laid out in advance so you can understand the concepts before you see the practical aspects of each topic. We recommend you go through the chapters sequentially to get the full benefit of the book.

Publisher ‏ : ‎ Cisco Press; 1st edition (July 25, 2022)
Language ‏ : ‎ English
Paperback ‏ : ‎ 656 pages
ISBN-10 ‏ : ‎ 0137492324
ISBN-13 ‏ : ‎ 978-0137492329
Item Weight ‏ : ‎ 2.38 pounds
Dimensions ‏ : ‎ 7.38 x 1.48 x 9.13 inches

Cisco Catalyst 9800 Series Wireless Controllers are a crucial component in managing wireless networks, providing enhanced connectivity and security for users. However, like any technology, they can encounter issues that require troubleshooting to ensure optimal performance. In this post, we will explore the key aspects of understanding and troubleshooting Cisco Catalyst 9800 Series Wireless Controllers.

Understanding Cisco Catalyst 9800 Series Wireless Controllers:

1. Architecture: The Cisco Catalyst 9800 Series Wireless Controllers are based on a cloud-native architecture, providing flexibility and scalability for managing wireless networks. They offer features such as advanced security, high availability, and seamless roaming capabilities.

2. Deployment Options: The Cisco Catalyst 9800 Series Wireless Controllers can be deployed in different modes, including centralized, distributed, and cloud-based deployments. Each mode offers unique benefits and considerations based on the specific requirements of the network.

3. Features: The Cisco Catalyst 9800 Series Wireless Controllers offer a wide range of features, including advanced security policies, application visibility, and control, and support for the latest Wi-Fi standards. Understanding these features is essential for maximizing the performance and efficiency of the wireless network.

Troubleshooting Cisco Catalyst 9800 Series Wireless Controllers:

1. Connectivity Issues: One of the most common issues with Cisco Catalyst 9800 Series Wireless Controllers is connectivity problems. This can be caused by issues with the wireless network configuration, interference from other devices, or hardware malfunctions. Troubleshooting steps include checking the network settings, monitoring signal strength, and updating firmware.

2. Performance Degradation: If users are experiencing slow or inconsistent performance on the wireless network, it may be due to congestion, interference, or outdated equipment. Troubleshooting steps include optimizing channel settings, adjusting power levels, and upgrading hardware if necessary.

3. Security Concerns: Ensuring the security of the wireless network is critical for protecting sensitive data and preventing unauthorized access. Common security issues with Cisco Catalyst 9800 Series Wireless Controllers include weak encryption, outdated firmware, and misconfigured security policies. Troubleshooting steps include updating firmware, implementing strong encryption protocols, and monitoring network activity.

In conclusion, understanding and troubleshooting Cisco Catalyst 9800 Series Wireless Controllers are essential for maintaining a secure and reliable wireless network. By familiarizing yourself with the architecture, deployment options, and features of these controllers, you can effectively troubleshoot issues and optimize performance for users.
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