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Index
Cisco Routers for the Desperate, 2nd Edition
Introduction
What This Book Will Teach You
Where You Can Learn the Rest
Unpacking the Router
Console Setup
Other Router Ports
Power-On
1. Befriending the Command Line
EXEC versus Privileged EXEC Mode
Integrated Help
Command Abbreviation
2. Router Configuration
Running versus Startup
Startup Configuration
Running Configuration
Reading a Configuration
Configuring the Router
Configuring a Particular Interface
Saving Changes
Backing Up Router Configurations
3. Router Interfaces
Got Interface?
Common Interface Characteristics
Configuring Interfaces
Ethernet Interfaces
Configuring Ethernet Interfaces
Description
duplex
speed
Disabling Broadcast Pings
Multicast Routing Cache
Serial Interfaces
Configuring Serial Interfaces
Other Interfaces
Loopback Interfaces
Null Interfaces
4. Wide Area Network Connections
Internet Connections
Choosing an ISP
ISP Router Configuration
Private Connections
Choosing Equipment
Ordering Circuits
Who Installs the Circuit?
Data or Voice Circuit?
Private Circuit Configuration
Private Circuit IP Addresses
Reserved Addresses
Subnetting
Routing Configuration
Static Routing
Remote Office Routing
Headquarters Routing
Plugging It All Together
5. Troubleshooting Routers
Router Crashes
Network Failure
Initial Circuit Tests
ping
traceroute
Circuit Design
The Smartjack
Examining the Circuit
Resetting the Interface
Rebooting the Router
Nothing Worked!
Interface Debugging Information
Input/Output Rates
Types of Errors
Using Carrier Transition to Detect a Bad Serial Connection
Extended Pings and Circuit Troubleshooting
Phoning the ISP
Circuit Loopback Tests
If It's Your Problem
6. IOS Changes
Cisco Security Notifications
Upgrade Preparations
IOS Versions
Choosing Your IOS Version
Find the Current IOS Image
Viewing Disk Contents
Copying Files
Copying Files over FTP
Copying Files over SCP
Copying Your Configuration to a File Server
Performing the Upgrade
IOS Installation
Managing Multiple IOS Images
Disaster Recovery
7. Redundancy with BGP and HSRP
BGP Basics
What BGP Isn't
BGP Preparations
Router Features
ISPs with BGP
IP Addresses
Getting an ASN
Routing Registries
Configuring BGP
Your Address Announcements
Configuring Addresses for Announcement
Configuring BGP
Your First Neighbor
Route Maps
A Complete BGP Configuration
Managing BGP
Viewing Routes
Resetting BGP
Load Balancing BGP
Propagation of BGP Updates
Hot Standby Router Protocol
What Is HSRP?
Tuning HSRP
Preemption
Interface Tracking
HSRP Delay
Authentication
BGP and HSRP
Testing HSRP
8. Cisco Switches
CatOS, IOS, and Hybrid Mode
Spanning Tree
Configuring Switch Interfaces
Cisco Discovery Protocol
CDP Security
Viewing ARP Caches and Finding Hosts
Viewing MAC Addresses
Finding Host Connections
9. Logins, Authentication, and Remote Access
Lines
Passwords
Usernames
Making Lines Check Usernames
Remote Router Access
Enabling Telnet
Enabling SSH
10. CISCO NETWORK SERVICES
Cisco AutoSecure
NTP
Basics of NTP
Configuring NTP
Checking NTP
Router Logging
Local Logging
Syslog Basics
SNMP
A. IP ADDRESSES AND NETMASKS
What Is an IP Address?
Practical Netmasks
Netmasks and BGP
COLOPHON
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