An essential guide to understanding the Cisco IOS architecture
In-depth coverage of Cisco's IOS Software architecture provides crucial information to:
<ul>
<li>Prevent network problems and optimize performance through more efficient design and configuration</li>
<li>Isolate and resolve network problems more quickly and easily</li>
<li>Apply the appropriate packet switching method, such as process switching, fast switching, optimum switching, or Cisco Express Forwarding (CEF)</li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for shared memory routers (Cisco 1600, 2500, 3600, 4000, 4500, and 4700 series)</li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7200 series routers</li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7500 series routers</li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco GSR 12000 series routers</li>
<li>Further your knowledge of how IOS Software implements Quality of Service (QoS)</li>
</ul>
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.

Inside Cisco Ios Software Architecture

Computers & Technology

White, Russ

Bollapragada, Vijay

Murphy, Curtis

Certification

Cisco Systems

The definitive design and deployment guide for secure virtual private networks <ul>
<li>Learn about IPSec protocols and Cisco IOS IPSec packet processing </li>
<li>Understand the differences between IPSec tunnel mode and transport mode </li>
<li>Evaluate the IPSec features that improve VPN scalability and fault tolerance, such as dead peer detection and control plane keepalives </li>
<li>Overcome the challenges of working with NAT and PMTUD </li>
<li>Explore IPSec remote-access features, including extended authentication, mode-configuration, and digital certificates </li>
<li>Examine the pros and cons of various IPSec connection models such as native IPSec, GRE, and remote access </li>
<li>Apply fault tolerance methods to IPSec VPN designs </li>
<li>Employ mechanisms to alleviate the configuration complexity of a large- scale IPSec VPN, including Tunnel End-Point Discovery (TED) and Dynamic Multipoint VPNs (DMVPN) </li>
<li>Add services to IPSec VPNs, including voice and multicast </li>
<li>Understand how network-based VPNs operate and how to integrate IPSec VPNs with MPLS VPNs</li> </ul>
Among the many functions that networking technologies permit is the ability for organizations to easily and securely communicate with branch offices, mobile users, telecommuters, and business partners. Such connectivity is now vital to maintaining a competitive level of business productivity. Although several technologies exist that can enable interconnectivity among business sites, Internet-based virtual private networks (VPNs) have evolved as the most effective means to link corporate network resources to remote employees, offices, and mobile workers. VPNs provide productivity enhancements, efficient and convenient remote access to network resources, site-to-site connectivity, a high level of security, and tremendous cost savings. IPSec VPN Design is the first book to present a detailed examination of the design aspects of IPSec protocols that enable secure VPN communication. Divided into three parts, the book provides a solid understanding of design and architectural issues of large-scale, secure VPN solutions. Part I includes a comprehensive introduction to the general architecture of IPSec, including its protocols and Cisco IOS® IPSec implementation details. Part II examines IPSec VPN design principles covering hub-and-spoke, full-mesh, and fault-tolerant designs. This part of the book also covers dynamic configuration models used to simplify IPSec VPN designs. Part III addresses design issues in adding services to an IPSec VPN such as voice and multicast. This part of the book also shows you how to effectively integrate IPSec VPNs with MPLS VPNs. IPSec VPN Design provides you with the field-tested design and configuration advice to help you deploy an effective and secure VPN solution in any environment. This security book is part of the Cisco Press® Networking Technology Series. Security titles from Cisco Press help networking professionals secure critical data and resources, prevent and mitigate network attacks, and build end-to-end self-defending networks.

IPSec VPN Design

Wainner, Scott

Khalid, Mohamed

An essential guide to understanding the Cisco IOS architecture In-depth coverage of Cisco's IOS Software architecture provides crucial information to: 
<ul>
<li>Prevent network problems and optimize performance through more efficient design and configuration </li>
<li>Isolate and resolve network problems more quickly and easily </li>
<li>Apply the appropriate packet switching method, such as process switching, fast switching, optimum switching, or Cisco Express Forwarding (CEF) </li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for shared memory routers (Cisco 1600, 2500, 3600, 4000, 4500, and 4700 series) </li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7200 series routers </li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco 7500 series routers </li>
<li>Understand the hardware architecture, packet buffering, and packet switching processes for the Cisco GSR 12000 series routers </li>
<li>Further your knowledge of how IOS Software implements Quality of Service (QoS)</li> </ul>
 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.

Inside Cisco IOS Software Architecture

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