Understanding and Troubleshooting Cisco Catalyst 9800 Series Wireless Controllers

成為 Cisco 下一代 9800 無線控制器的權威專業指南

隨著無線網路、應用程式和服務的快速演進，它們對於業務的重要性越來越高，對於性能、延遲、部署密度和設備支援的要求也越來越高。Cisco 的先進 Catalyst 9800 無線控制器應對這些挑戰，提供卓越的適應性、安全性、性能、可擴展性和可編程性。基於現代且安全的 Cisco IOS XE 作業系統，它們支援 Cisco 意圖為基礎的網路，幫助您不斷利用新的創新。現在，四位 Cisco 專家提供端到端的指導、實用技巧和經過驗證的建議，幫助您設計、部署和管理 Catalyst 9800 無線網路。

對於技術決策者，本指南提供了對 Catalyst 9800 硬體和軟體的深入了解，與業務價值緊密相連。架構師將找到前期網路設計和功能實施的重要細節。網路操作人員和其他 IT 專業人員將發現可靠且高效的設置、配置、監控和故障排除的測試工具和方法。無論您的角色如何，本指南將幫助您最大化任何 Catalyst 9800 網路的價值，並成為您未來多年不可或缺的參考資料。

• 了解 Catalyst 9800 的好處、功能、角色和架構


• 學習新的 C9800 配置模型，包括關鍵設計考量和最佳實踐


• 在私有和公有雲中部署和配置 C9800


• 從 AAA 和 ACL 到偵測偽裝和無線入侵防護 (WIPS)，系統性地保護 C9800


• 在企業環境中建立和優化無縫客戶漫遊


• 了解 C9800 實現的關鍵 RF 概念


• 為 QoS 設計和實施端到端架構，並為高可用性和多播等網路服務進行設計/部署


• 探索透過 Cisco DNA Spaces 提供的增值無線服務


• 使用 YANG、Python、RESTCONF 和 NETCONF 進行網路可編程性，提升靈活性和價值


• 充分利用基於模型的遙測和可編程性的豐富數據模型，使用開源工具


• 深入了解無線網路故障排除、備份/還原和升級

Simone Arena is a principal technical marketing engineer (TME) within the Cisco Enterprise Networking & Cloud group and is primarily focused on enterprise network architecture and on all things related to wireless and mobility. Simone is based in Italy and is a Cisco veteran, having joined Cisco in 1999. Throughout the years, Simone has covered multiple roles at Cisco, starting as a software engineer working with Catalyst switching platforms, to consulting system engineer in the field, to TME within different teams (Enterprise Solution Engineering, Wireless Business Unit, Enterprise Networking and Cloud, and now Networking Experiences Group). Today Simone is the lead TME architect for Catalyst Wireless, and his time is split between helping customers and partners design the best solution that fits their needs and engineering and product management, trying to evolve and improve the products and solutions. Simone is a Distinguished Speaker at Cisco Live and has spoken at Cisco Live events all over the world for several years. Besides wireless and networking, Simone has two passions: his family, with his two daughters Viola and Anita; and Fiorentina, the best soccer team in the world...no question. In his spare time, Simone enjoys listening to music, especially through his new tube amplifier (simply awesome!).

Francisco Sedano Crippa, CCIE No. 14859, joined Cisco in 2006. After some years at TAC supporting voice solutions and as a system engineer working with service providers, he moved to the development side, where he worked on routing, datacenter and, during the past 10 years, as a technical leader on the Wireless Controller development team, focused in serviceability, location services, programmability, and cloud. He's a Cisco Live speaker and is passionate about DevOps and automation, and he is now working on architecting next-generation cloud-based lab services. When not working, he spends his time building a full-size Boeing 737 simulator in his basement and enjoying his other passion: his daughter, Scarlett, and son, Marco, and his wife, Isabel.

Nicolas Darchis, CCIE Wireless No. 25344, joined the Wireless and AAA Cisco TAC team in Belgium in 2007, where his main focus was troubleshooting wireless networks, wireless management tools, and security products. Since 2016, Nicolas has been working as a technical leader for wireless at the same technical assistance center in Brussels; he has shifted a big part of his focus to improving product serviceability of new and upcoming products, as well as new software releases. He is also a major contributor to online documentation of Cisco wireless products and has participated in many of the wireless "Ask the Expert" sessions run by the Cisco support community. Nicolas has been a CCIE Wireless No. 25344 since 2009 and, more recently, he has achieved CWNE No. 208.

Sudha Katgeri, CCIE No. 45857, is a technical leader in services for Enterprise Wireless and has been with Cisco since 2006. Besides supporting customer escalations, Sudha collaborates with Customer Experience (CX), Enterprise Networking (ENB) Escalation, Engineering, and Product Management to improve product quality and serviceability in the next-generation Catalyst wireless stack. Sudha has a CCIE in Wireless (#45857) and is an author and contributor to Wireless TAC Innovation Tools like Wireless Config Converter, CLI Analyzer, and several documents on cisco.com.

Simone Arena 是思科企業網絡和雲組的首席技術營銷工程師（TME），主要專注於企業網絡架構以及與無線和移動相關的所有事務。Simone 在意大利工作，是一位資深的思科員工，於 1999 年加入思科。多年來，Simone 在思科擔任過多個職位，從軟件工程師開始，與 Catalyst 切換平台合作，到現場的諮詢系統工程師，再到不同團隊的 TME（企業解決方案工程、無線業務部門、企業網絡和雲組，以及現在的網絡體驗組）。今天，Simone 是 Catalyst 無線的首席 TME 架構師，他的時間分配在幫助客戶和合作夥伴設計最適合他們需求的最佳解決方案，以及工程和產品管理，試圖改進產品和解決方案。Simone 是思科全球技術大會的傑出演講者，多年來在全球各地的思科全球技術大會上發表演講。除了無線和網絡，Simone 還有兩個熱情：他的家人，包括他的兩個女兒 Viola 和 Anita；以及佛羅倫薩，世界上最好的足球隊...毫無疑問。在閒暇時間，Simone 喜歡聽音樂，尤其是通過他的新管式放大器（簡直太棒了！）。

Francisco Sedano Crippa，CCIE No. 14859，於 2006 年加入思科。在支援語音解決方案的技術支援中心（TAC）和與服務提供商合作的系統工程師工作了一些年後，他轉向開發方面，在路由、數據中心以及過去的 10 年中，作為無線控制器開發團隊的技術領導者，專注於可服務性、位置服務、可編程性和雲。他是思科全球技術大會的演講者，對 DevOps 和自動化充滿熱情，現在正在設計下一代基於雲的實驗室服務。在工作之餘，他花時間在地下室建造一個全尺寸的波音 737 模擬器，並享受他的另一個熱情：他的女兒 Scarlett、兒子 Marco 和妻子 Isabel。

Nicolas Darchis，CCIE Wireless No. 25344，於 2007 年加入比利時的無線和 AAA 思科 TAC 團隊，他的主要重點是故障排除無線網絡、無線管理工具和安全產品。自 2016 年以來，Nicolas 一直在布魯塞爾的同一技術支援中心擔任無線技術領導者；他將大部分精力轉向改進新產品和即將推出的新軟件版本的產品可服務性。他還是思科無線產品在線文檔的主要貢獻者，並參與了思科支援社區舉辦的許多無線「專家問答」活動。Nicolas 自 2009 年以來一直是 CCIE Wireless No. 25344，最近還獲得了 CWNE No. 208。

Sudha Katgeri，CCIE No. 45857，是企業無線服務的技術領導者，自 2006 年加入思科以來一直在思科工作。除了支援客戶升級，Sudha 還與客戶體驗（CX）、企業網絡（ENB）升級、工程和產品管理合作，以改善下一代 Catalyst 無線堆棧的產品質量和可服務性。Sudha 擁有無線 CCIE（#45857），是 Wireless TAC Innovation 工具（如無線配置轉換器、CLI 分析器）和 cisco.com 上的多個文檔的作者和貢獻者。