Managing IP Networks with Cisco RoutersRouters are the glue that connects the pieces of your network. Even in the simplest networks, this isn't a simple task. Routers have evolved into highly specialized computing platforms, with extremely flexible but complex capabilities. Managing IP Networks with Cisco Routers is a practical guide to setting up and maintaining a production network. It discusses issues like how to select routing protocols and how to configure protocols to handle most common situations. It also discusses less esoteric but equally important issues like how to evaluate network equipment and vendors and how to set up a help desk. Although the book focuses on Cisco routers, and gives examples using Cisco's IOS, the principles discussed are common to all IP networks, regardless of the vendor you choose. This book is firmly grounded in the realities of day-to-day network management. It's designed to solve real-world problems, like: "How do I prevent my router from using unreliable information from other routers?" "How do I safeguard my router against attacks?" "How can I make my network more reliable?" If you're building or maintaining an IP network, you'll find this book indispensable. Topics covered include:
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Contents
The Basics of IP Networking | 1 |
Addresses and Networks | 2 |
Private and Public Addresses | 14 |
The IP Routing Algorithm | 18 |
Domain Names and the Domain Name System | 22 |
Network DesignPart 1 | 27 |
Stating Your GoalsAn Important First Step | 28 |
Network ArchitectureHow It All Fits Together | 29 |
Dynamic Routing with Multiple Paths | 160 |
Using Multiple Routing Protocols at the Same Time | 165 |
The NonTechnical Side of Network Management | 169 |
Defining the Boundaries of Your Network | 170 |
Staff Skills | 173 |
Costs | 176 |
Establishing a Help Desk | 178 |
The Technical Side of Network Management | 183 |
Media SelectionWhat Goes Where? | 30 |
Physical Topology | 46 |
Network DesignPart 2 | 53 |
Router Placement | 60 |
Subnet Assignment and Mask Selection | 62 |
Proxy ARP as an Alternative to Subnets | 72 |
Redundancy and Fault Tolerance | 76 |
What About MultiProtocol Networking? | 80 |
Selecting Network Equipment | 83 |
What Is an IP Router? | 84 |
Router Selection Criteria | 86 |
Routing Protocol Selection | 113 |
Classification of Dynamic Routing Protocols | 121 |
Selecting a Routing Protocol | 131 |
Routing Protocol Configuration | 133 |
Basic Configurations | 134 |
Propagating Static Routes | 139 |
Using VariableLength Subnet Masks with a Classful Protocol | 141 |
Backup Static Routes | 143 |
Suppressing Advertisements | 151 |
Restricting Sources of Routing Information | 152 |
Filtering Specific Routes from an Update | 155 |
Troubleshooting | 192 |
Tools for Monitoring and Troubleshooting | 200 |
Change Management | 219 |
Connecting to the Outside World | 231 |
How Do I Connect to the Internet? | 234 |
Addresses | 236 |
External Routing | 240 |
Permanent or OnDemand? | 254 |
Network Security | 256 |
Assessing Your Security Needs | 258 |
Controlling Access | 259 |
Enhancing Privacy | 274 |
Maintaining Data Integrity | 280 |
Preventing Denial of Service | 282 |
Other Security Concerns | 284 |
Configuring Interfaces | 287 |
Where and How to Get New RFCs | 307 |
Obtaining Internet Drafts | 309 |
Obtaining IP Addresses | 311 |
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Common terms and phrases
access list address space allow assigned bandwidth bastion hosts broadcast cable Cisco IOS common configuration connection consider cost default route define destination device distance-vector domains dynamic routing protocol EIGRP encryption equipment Ethernet example failure FDDI filter firewall Frame Relay hardware help desk host hubs interface Internet IP address IP network ip route link-state machine Mbps metric modem monitoring multiple neighbor network administrators network management network number network segment NSAPA O'Reilly octets options organization OSPF packet password path point-to-point private addresses problem proxy ARP reachability redundant remote router routing table routing updates serial server simple SNMP specific static routes sub-interface subnet masks switch tells the router Telnet tion Token Ring topology traffic UNIX virtual circuits WAN links