Cisco IP Routing: Packet Forwarding and Intra-domain Routing Protocols Made Easy by Alex Zinin
Cisco IP Routing: Packet Forwarding and Intra-domain Routing Protocols by Alex Zinin
If you are a network administrator, a Cisco networking professional, or a CCIE exam candidate, you may be interested in reading Cisco IP Routing: Packet Forwarding and Intra-domain Routing Protocols by Alex Zinin. This book is a comprehensive guide to understanding how Cisco routers perform IP routing and how to configure and troubleshoot four key intra-domain routing protocols: RIP, IGRP, EIGRP, and OSPF.
cisco ip routing alex zinin pdf
Alex Zinin is a senior routing software architect at Nexsi Systems and a former routing protocol escalation engineer at Cisco Systems. He has many years of experience in networking design, installation, support, and training. He wrote this book to demystify the complex internals of Cisco IP routing with clear explanations, extensive visuals, and many real-world examples, configurations, and network designs.
In this article, we will give you an overview of what you can learn from this book and why it is a valuable resource for anyone who wants to master Cisco IP routing.
Overview of Cisco Routers
The first chapter of the book introduces you to the basic concepts and components of Cisco routers. You will learn how Cisco routers are different from other devices such as switches and hubs, what functions they perform, what hardware and software elements they consist of, and how they interact with each other.
You will also learn how to access Cisco routers using different methods such as console port, telnet, SSH, SNMP, web interface, etc. You will get familiar with the Cisco IOS command-line interface (CLI) and its modes, syntax, conventions, help system, etc. You will also learn how to configure basic settings such as hostname, passwords, banners, interfaces, etc.
This chapter will help you understand the fundamentals of Cisco router operation and management.
Review of IP Addressing
The second chapter of the book reviews the basics of IP addressing and subnetting. You will learn how IP addresses are structured into network and host portions, how they are classified into different classes (A, B, C, D, E), how they are assigned to devices using static or dynamic methods (DHCP), how they are resolved into MAC addresses using ARP or RARP, etc.
You will also learn how to divide a network into smaller subnetworks using subnet masks, how to calculate subnet addresses and ranges, how to use variable-length subnet masks (VLSM) and classless inter-domain routing (CIDR) to optimize address utilization and routing efficiency, how to use special addresses such as loopback, broadcast, multicast, anycast, etc.
This chapter will help you refresh your knowledge of IP addressing and subnetting and prepare you for the next chapters on routing and forwarding.
Routing and Forwarding Processes
The third chapter of the book explains the difference between routing and forwarding and how they are performed by Cisco routers. You will learn how routing is the process of finding the best path to a destination network, while forwarding is the process of sending a packet along that path. You will also learn how routing and forwarding are related to each other and how they depend on the routing table.
You will also learn how Cisco routers build and maintain their routing tables using different sources of information such as connected networks, static routes, dynamic routes, default routes, etc. You will learn how Cisco routers use different algorithms and metrics to select the best route among multiple routes to the same destination. You will also learn how Cisco routers handle packets that have no matching route in the routing table or that encounter errors during forwarding.
This chapter will help you understand the core functions of Cisco routers and how they affect network performance and reliability.
Static Routing
The fourth chapter of the book covers static routing, which is the simplest form of routing. You will learn how to configure and troubleshoot static routes on Cisco routers using different commands such as ip route, show ip route, debug ip routing, etc. You will also learn how to use static routes for various purposes such as default routing, backup routing, load balancing, policy routing, etc.
You will also learn the advantages and disadvantages of static routing compared to dynamic routing. You will learn when to use static routing and when to avoid it. You will also learn some best practices and tips for using static routing effectively.
This chapter will help you master static routing and use it appropriately in your network.
Dynamic Routing
The fifth chapter of the book introduces dynamic routing, which is the process of exchanging routing information between routers using routing protocols. You will learn the advantages and disadvantages of dynamic routing compared to static routing. You will also learn the general characteristics and classification of routing protocols such as distance vector, link state, hybrid, etc.
You will also learn the common features and functions of dynamic routing protocols such as timers, metrics, updates, convergence, stability, scalability, etc. You will also learn some general concepts and terms related to dynamic routing such as autonomous systems, administrative distance, route redistribution, route summarization, etc.
This chapter will help you understand the basics of dynamic routing and prepare you for the next chapters on specific routing protocols.
RIP
The sixth chapter of the book covers RIP (Routing Information Protocol), which is one of the oldest and simplest dynamic routing protocols. You will learn the history and evolution of RIP from version 1 to version 2. You will also learn the characteristics and configuration of RIP such as hop count metric, split horizon, poison reverse, triggered updates, authentication, etc.
You will also learn how to troubleshoot RIP using different commands such as show ip rip database, show ip protocols, debug ip rip, etc. You will also learn some common problems and solutions related to RIP such as loops, count-to-infinity, discontiguous networks, etc.
This chapter will help you master RIP and use it effectively in your network.
IGRP
The seventh chapter of the book covers IGRP (Interior Gateway Routing Protocol), which is a proprietary Cisco protocol that improves upon RIP. You will learn the characteristics and configuration of IGRP such as composite metric, load balancing, variance, holddown timer, etc.
You will also learn how to troubleshoot IGRP using different commands such as show ip igrp topology, show ip igrp neighbors, debug ip igrp events, etc. You will also learn some common problems and solutions related to IGRP such as synchronization issues, unequal cost paths, etc.
This chapter will help you master IGRP and use it effectively in your network.
EIGRP
EIGRP
The eighth chapter of the book covers EIGRP (Enhanced Interior Gateway Routing Protocol), which is an advanced version of IGRP that supports multiple network layer protocols, such as IP, IPX, and AppleTalk. You will learn the characteristics and configuration of EIGRP such as dual algorithm, feasible successors, diffusing update algorithm (DUAL), reliable transport protocol (RTP), etc.
You will also learn how to troubleshoot EIGRP using different commands such as show ip eigrp topology, show ip eigrp neighbors, debug ip eigrp, etc. You will also learn some common problems and solutions related to EIGRP such as stuck in active (SIA) state, route flapping, discontiguous networks, etc.
This chapter will help you master EIGRP and use it effectively in your network.
OSPF
The ninth chapter of the book covers OSPF (Open Shortest Path First), which is a popular link-state routing protocol that is widely used in large and complex networks. You will learn the characteristics and configuration of OSPF such as areas, link-state advertisements (LSAs), shortest path first (SPF) algorithm, neighbor discovery and adjacency formation, designated router (DR) and backup designated router (BDR), etc.
You will also learn how to troubleshoot OSPF using different commands such as show ip ospf database, show ip ospf interface, show ip ospf neighbor, debug ip ospf, etc. You will also learn some common problems and solutions related to OSPF such as network types, area types, authentication, route summarization, etc.
This chapter will help you master OSPF and use it effectively in your network.
Controlling Routing Updates
The tenth chapter of the book covers how to control routing updates by altering update flow, redistribution, and policy routing. You will learn how to use filters, distribute lists, route maps, and administrative distance to control which routes are advertised or accepted by a router. You will also learn how to use redistribution to exchange routes between different routing protocols or domains. You will also learn how to use policy routing to change the default behavior of routing based on criteria other than destination address, such as source address, protocol type, port number, etc.
You will also learn how to troubleshoot routing update issues using different commands such as show ip route, show ip protocols, show ip access-lists, show route-map, debug ip policy, etc. You will also learn some common problems and solutions related to routing update control such as route loops, suboptimal paths, inconsistent policies, etc.
This chapter will help you master routing update control and use it effectively in your network.
Redistribution
The eleventh chapter of the book covers redistribution, which is the process of exchanging routes between different routing protocols or domains. You will learn the advantages and disadvantages of redistribution and when to use it. You will also learn the general steps and guidelines for configuring redistribution on Cisco routers.
You will also learn how to troubleshoot redistribution issues using different commands such as show ip route, show ip protocols, show ip redistribute, debug ip routing, etc. You will also learn some common problems and solutions related to redistribution such as route loops, metric translation, filtering, tagging, etc.
This chapter will help you master redistribution and use it effectively in your network.
Policy Routing
The twelfth chapter of the book covers policy routing, which is the process of changing the default behavior of routing based on criteria other than destination address. You will learn the advantages and disadvantages of policy routing and when to use it. You will also learn the general steps and guidelines for configuring policy routing on Cisco routers using route maps.
You will also learn how to troubleshoot policy routing issues using different commands such as show ip policy, show route-map, debug ip policy, etc. You will also learn some common problems and solutions related to policy routing such as performance impact, routing asymmetry, policy consistency, etc.
This chapter will help you master policy routing and use it effectively in your network.
Conclusion
In conclusion, Cisco IP Routing: Packet Forwarding and Intra-domain Routing Protocols by Alex Zinin is a comprehensive and practical guide to understanding how Cisco routers perform IP routing and how to configure and troubleshoot four key intra-domain routing protocols: RIP, IGRP, EIGRP, and OSPF. It also covers how to control routing updates by altering update flow, redistribution, and policy routing. It is a valuable resource for anyone who wants to master Cisco IP routing.
If you want to learn more about this book or buy it online, you can visit the following link: https://www.amazon.com/Cisco-IP-Routing-Forwarding-Intra-domain/dp/0201604736
FAQs
Here are some frequently asked questions about the book and their answers:
Who is the target audience of this book?
The target audience of this book are network administrators, Cisco networking professionals, and CCIE exam candidates who want to learn how Cisco routers perform IP routing and how to configure and troubleshoot four key intra-domain routing protocols: RIP, IGRP, EIGRP, and OSPF.
What are the prerequisites for reading this book?
The prerequisites for reading this book are a basic understanding of networking concepts and terminology, such as IP addressing, subnetting, TCP/IP protocols, etc. It is also helpful to have some experience with Cisco routers and IOS commands.
What are the main benefits of reading this book?
The main benefits of reading this book are:
You will gain a deep understanding of how Cisco routers perform IP routing and how they interact with different routing protocols.
You will learn how to configure and troubleshoot four key intra-domain routing protocols: RIP, IGRP, EIGRP, and OSPF.
You will learn how to control routing updates by altering update flow, redistribution, and policy routing.
You will learn from clear explanations, extensive visuals, and many real-world examples, configurations, and network designs.
How is this book different from other books on Cisco routing?
This book is different from other books on Cisco routing in several ways:
It focuses on four key intra-domain routing protocols: RIP, IGRP, EIGRP, and OSPF.
It shows you exactly what's happening inside your routers when you use these protocols.
It covers both theory and practice of effective configuration and troubleshooting.
It provides in-depth coverage of controlling routing by altering update flow, redistribution, and policy routing.
How can I get the most out of this book?
You can get the most out of this book by:
Reading it carefully and thoroughly.
Trying out the examples, configurations, and network designs on your own routers or simulators.
Reviewing the key points and summaries at the end of each chapter.
Testing your knowledge with the exercises and questions at the end of each chapter.
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