Cover image for Todd Lammles CCNA IOS commands survival guide
Todd Lammles CCNA IOS commands survival guide
Personal Author:
1st ed.
Publication Information:
Hoboken, NJ : Wiley Technology Pub., 2007
Physical Description:
xviii, 292 p. : ill. ; 24 cm.


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30000010186008 TK5105.5 L35 2007 Open Access Book Book

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To become a Cisco Certified Network Associate (CCNA), you must learn the hundreds of IOS commands used by Cisco routers and switches. This handy reference from Cisco networking authority Todd Lammle is just what you need to master those commands. From a thorough introduction to Cisco's basic operating system to making the transition to IPv6, Todd Lammle walks you through hundreds of commands with short, to-the-point explanations and plenty of figures and real-world examples.

Author Notes

Todd Lammle, is President of GlobalNet Training, Inc

Table of Contents

Introductionp. xiii
Chapter 1 Basic IOS Commandsp. 1
Booting the Routerp. 2
Setup Modep. 4
Router Configuration Modesp. 4
Editing and Help Featuresp. 6
Configuring a Routerp. 9
Hostnamesp. 9
Bannersp. 9
Passwordsp. 10
Router Interfacesp. 14
Using the show Commandp. 18
Chapter 2 Managing a Cisco Internetworkp. 21
Understanding the Internal Components of a Cisco Routerp. 22
Managing the Configuration Registerp. 23
Checking the Current Configuration Register Valuep. 24
Changing the Configuration Registerp. 24
Recovering Passwordsp. 26
Using Boot System Commandsp. 29
Backing Up and Restoring the Cisco IOSp. 30
Verifying Flash Memoryp. 30
Backing Up the Cisco IOSp. 31
Restoring or Upgrading the Cisco Router IOSp. 32
Using the Cisco IOS File System (Cisco IFS)p. 32
Backing Up and Restoring the Cisco Configurationp. 35
Backing Up the Cisco Router Configurationp. 35
Restoring the Cisco Router Configurationp. 37
Erasing the Configurationp. 38
Using the Cisco IOS File System to Manage Your Router's Configuration (Cisco IFS)p. 38
Using Cisco Discovery Protocol (CDP)p. 40
Getting CDP Timers and Holdtime Informationp. 40
Gathering Neighbor Informationp. 41
Gathering interface Traffic Informationp. 43
Gathering Port and Interface Informationp. 43
Using Telnetp. 44
Telnetting into Multiple Devices Simultaneouslyp. 45
Checking Telnet Connectionsp. 46
Checking Telnet Usersp. 46
Closing Telnet Sessionsp. 47
Resolving Hostnamesp. 48
Building a Host Tablep. 49
Using DNS to Resolve Namesp. 51
Checking Network Connectivity and Troubleshootingp. 52
Using the ping Commandp. 52
Using the traceroute Commandp. 53
Debuggingp. 53
Using the sh processes Commandp. 55
Chapter 3 IP Routingp. 57
Routing Basicsp. 58
Static Routingp. 61
Default Routingp. 63
Routing Protocol Basicsp. 65
Administrative Distances (ADs)p. 65
Routing Information Protocol (RIP)p. 66
RIP Timersp. 67
Enabling RIPp. 68
Holding Down RIP Propagationsp. 69
RIP Version 2 (RIPv2)p. 69
Verifying RIPp. 71
The show ip protocols Commandp. 71
The debug ip rip Commandp. 72
Chapter 4 Enhanced IGRP (EIGRP) and Open Shortest Path First (OSPF)p. 75
Understanding EIGRP Basicsp. 76
Configuring EIGRPp. 77
Holding Down EIGRP Propagationsp. 77
Setting Maximum Paths and Hop Countp. 78
Using Redistribution Commandsp. 79
Configuring Discontiguous Networksp. 81
Load Balancing with EIGRPp. 81
Using Route Authentication with EIGRPp. 85
Verifying EIGRPp. 86
Understanding Open Shortest Path First (OSPF) Basicsp. 90
Configuring OSPFp. 91
Enabling OSPFp. 92
Configuring OSPF Areasp. 92
Verifying OSPF Configurationp. 92
Using the show ip ospf Commandp. 94
Using the show ip ospf database Commandp. 95
Using the show ip ospf interface Commandp. 95
Using the show ip ospf neighbor Commandp. 96
Using the show ip protocols Commandp. 97
Debugging OSPFp. 98
Chapter 5 Layer-2 Switching and Spanning-Tree Protocol (STP)p. 101
Switching Servicesp. 102
Three Switch Functions at Layer 2p. 103
Basic Switch Configurationsp. 104
Switch Securityp. 105
Spanning-Tree Operationsp. 107
Optimizing Spanning-Tree Operationsp. 108
EtherChannelp. 112
Verifying Cisco Catalyst Switchesp. 114
Chapter 6 Virtual LANs (VLANs)p. 121
Understanding VLAN Basicsp. 122
Configuring VLANsp. 122
Verifying VLAN Creationp. 124
Assigning Switch Ports to VLANsp. 124
Configuring Trunk Portsp. 126
Configuring Inter-VLAN Routingp. 130
Configuring VTPp. 131
Telephony: Configuring Voice VLANsp. 134
Configuring the Voice VLANp. 134
Chapter 7 Securityp. 137
Perimeter Routers, Firewalls, and Internal Routersp. 138
Recognizing Security Threatsp. 139
Using Cisco IOS Firewallp. 140
Introduction to Access Listsp. 141
Standard Access Listsp. 143
Wildcard Maskingp. 145
Controlling VTY (Telnet) Accessp. 145
Extended Access Listsp. 146
Named Access Listsp. 151
Switch Port ACLsp. 153
Time-Based ACLsp. 156
Monitoring Access Listsp. 158
Chapter 8 Network Address Translation (NAT)p. 161
When Do We Use NAT?p. 162
Types of Network Address Translationp. 163
NAT Namesp. 164
Static NAT Configurationp. 165
Dynamic NAT Configurationp. 166
PAT (Overloading) Configurationp. 167
Simple Verification of NATp. 168
Configuring NAT Using SDMp. 170
Chapter 8 Cisco's Wireless Technologiesp. 175
Introducing Wireless Technologyp. 176
The 802.11 Standardsp. 178
Service Setsp. 182
Wireless Securityp. 184
Configuring Cisco Wireless Using the IOSp. 186
AP Configurationp. 189
Configuring Cisco Wireless Using the SDM/HTTPp. 190
Chapter 10 Internet Protocol Version 6 (IPv6)p. 199
Why Do We Need IPv6?p. 200
IPv6 Addressing and Expressionsp. 201
Shortened Expressionp. 202
Configuring Cisco Routers with IPv6p. 203
DHCPv6p. 204
IPv6 Routing Protocolsp. 206
RIPngp. 206
EIGRPv6p. 207
OSPFv3p. 208
Migrating to IPv6p. 209
Dual Stackingp. 210
6to4 Tunnelingp. 211
Verifying RIPngp. 212
Verifying OSPFv3p. 215
Chapter 11 Wide Area Networks (WANs)p. 219
Introduction to Wide Area Networksp. 220
Defining WAN Termsp. 221
WAN Supportp. 221
High-Level Data-Link Control (HDLC) Protocolp. 224
Point-to-Point Protocol (PPP)p. 225
Configuring PPP on Cisco Routersp. 226
Configuring PPP Authenticationp. 227
Verifying PPP Encapsulationp. 228
PPPoE Configurationp. 233
Introduction to Frame Relay Technologyp. 235
Frame Relay Encapsulation Typesp. 236
Data Link Connection Identifiers (DLCIs)p. 237
Local Management Interface (LMI)p. 238
Frame Relay Implementation and Monitoringp. 241
Chapter 12 Cisco's Security Device Manager (SDM)p. 249
Configuring Your Router to Be Set Up Through the SDMp. 250
Using the SDM to Manage the Flash Memoryp. 259
Using the SDM to Back Up, Restore, and Edit the Router's Configurationp. 262
Configuring LAN and Wan Interfaces and Verifying a Router Using SDMp. 266
Configuring RIP on a Router with SDMp. 272
EIGRPp. 274
Configuring OSPF with the SDMp. 275
Indexp. 279