CCIE Professional Development: Inside Cisco IOS Software Architecture

An essential guide to understanding the Cisco IOS architecture

In-depth coverage of Cisco's IOS Software architecture provides crucial information to:

• Prevent network problems and optimize performance through more efficient design and configuration
• Isolate and resolve network problems more quickly and easily
• Apply the appropriate packet switching method, such as process switching, fast switching, optimum switching, or Cisco Express Forwarding (CEF)
• Understand the hardware architecture, packet buffering, and packet switching processes for shared memory routers (Cisco 1600, 2500, 3600, 4000, 4500, and 4700 series)
• Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7200 series routers
• Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7500 series routers
• Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco GSR 12000 series routers
• Further your knowledge of how IOS Software implements Quality of Service (QoS)

Inside Cisco IOS Software Architecture offers crucial and hard-to-find information on Cisco's Internetwork Operating System (IOS) Software. IOS Software provides the means by which networking professionals configure and manage Cisco networking devices. Beyond understanding the Cisco IOS command set, comprehending what happens inside Cisco routers will help you as a network designer or engineer to perform your job more effectively. By understanding the internal operations of IOS Software, you will be able to take architectural considerations into account when designing networks and isolate problems more easily when troubleshooting networks. Inside Cisco IOS Software Architecture provides essential information on the internal aspects of IOS Software at this level, and it is an invaluable resource for better understanding the intricacies of IOS Software and how it affects your network.

Inide Cisco IOS Software Architecture begins with an overview of operating system concepts and the IOS Software infrastructure, including processes, memory management, CPU scheduling, packet buffers, and device drivers, as well as a discussion of packet switching architecture with detailed coverage of the various platform-independent switching methods, including process switching, fast switching, optimum switching, and Cisco Express Forwarding (CEF). The book then delves into the intricate details of the design and operation of platform-specific features, including the 1600, 2500, 4x00, 3600, 7200, 7500, and GSR Cisco routers. Finally, an overview of IOS Quality of Service (QoS) is provided, including descriptions of several QoS methods, such as priority queuing, custom queuing, weighted fair queuing, and modified deficit round robin.

一本了解思科IOS架構的重要指南

深入探討思科IOS軟體架構的詳細內容，提供關鍵資訊，包括：
- 通過更有效的設計和配置，預防網路問題並優化性能
- 更快速、更容易地隔離和解決網路問題
- 應用適當的封包交換方法，如進程交換、快速交換、最佳交換或思科快速轉發（CEF）
- 了解共享記憶體路由器（思科1600、2500、3600、4000、4500和4700系列）的硬體架構、封包緩衝和封包交換過程
- 了解思科7200系列路由器的硬體架構、封包緩衝和封包交換過程
- 了解思科7500系列路由器的硬體架構、封包緩衝和封包交換過程
- 了解思科GSR 12000系列路由器的硬體架構、封包緩衝和封包交換過程
- 進一步了解IOS軟體實現服務品質（QoS）的知識

《Inside Cisco IOS Software Architecture》提供了關於思科網絡作業系統（IOS）軟體的重要且難以找到的資訊。IOS軟體提供了網絡專業人員配置和管理思科網絡設備的手段。除了了解思科IOS指令集，了解思科路由器內部運作將有助於您作為網絡設計師或工程師更有效地執行工作。通過了解IOS軟體的內部運作，您將能夠在設計網絡時考慮架構因素，並在網絡故障排除時更容易地隔離問題。《Inside Cisco IOS Software Architecture》提供了在這個層次上關於IOS軟體內部細節的重要資訊，對於更好地理解IOS軟體的細節以及它對您的網絡的影響，它是一個寶貴的資源。

《Inside Cisco IOS Software Architecture》從作業系統概念和IOS軟體基礎架構開始，包括進程、記憶體管理、CPU排程、封包緩衝和設備驅動程式，以及詳細介紹各種獨立於平台的交換方法，包括進程交換、快速交換、最佳交換和思科快速轉發（CEF）。本書隨後深入探討特定平台功能的設計和運作的細節，包括1600、2500、4x00、3600、7200、7500和GSR思科路由器。最後，提供了IOS服務品質（QoS）的概述，包括優先佇列、自訂佇列、加權公平佇列和修改的赤字循環排程等幾種QoS方法的描述。