CCNA Portable Command Guide

Scott Empson1587201933, 978-1-58720-193-6

Preparing for the CCNAR exam? Here are all the CCNA-level commands you need in one condensed, portable resource. The CCNA Portable Command Guide, Second Edition, is filled with valuable, easy-to-access information and is portable enough for use whether you’re in the server room or the equipment closet. This book has been completely updated to cover topics in the ICND1 640-822, ICND2 640-816, and CCNA 640-802 exams. Use this quick reference resource to help you memorize commands and concepts as you work to pass the CCNA exam. The guide summarizes all CCNA certification-level Cisco IOSR Software commands, keywords, command arguments, and associated prompts, providing you with tips and examples of how to apply the commands to real-world scenarios. Configuration examples throughout the book provide you with a better understanding of how these commands are used in simple network designs.

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Table of contents :
CCNA Portable Command Guide, Second Edition……Page 1
Contents……Page 12
Introduction……Page 22
Part I: TCP/IP Version 4……Page 28
Class A–E Addresses……Page 30
Subnetting a Class C Network Using Binary……Page 31
Subnetting a Class B Network Using Binary……Page 35
Binary ANDing……Page 39
The Enhanced Bob Maneuver for Subnetting……Page 43
IP Subnet Zero……Page 48
VLSM Example……Page 49
Example for Understanding Route Summarization……Page 56
Requirements for Route Summarization……Page 61
Part II: Introduction to Cisco Devices……Page 62
Terminal Settings……Page 64
LAN Connections……Page 65
Serial Cable Types……Page 66
Which Cable to Use?……Page 68
568A Versus 568B Cables……Page 69
Using the Tab Key to Complete Commands……Page 72
enable Command……Page 73
Setup Mode……Page 74
Keyboard Help……Page 75
show Commands……Page 76
Part III: Configuring a Router……Page 78
Router Modes……Page 80
Configuring Passwords……Page 81
Password Encryption……Page 82
Interface Names……Page 83
Moving Between Interfaces……Page 85
Configuring a Fast Ethernet Interface……Page 86
Setting the Clock Time Zone……Page 87
The logging synchronous Command……Page 88
Erasing Configurations……Page 89
show Commands……Page 90
Configuration Example: Basic Router Configuration……Page 91
Part IV: Routing……Page 94
Configuring a Static Route on a Router……Page 96
Static Routes and Administrative Distance (Optional)……Page 97
Configuring a Default Route on a Router……Page 98
Configuration Example: Static Routes……Page 99
RIP Routing: Mandatory Commands……Page 102
RIP Routing: Optional Commands……Page 103
Troubleshooting RIP Issues……Page 104
Configuration Example: RIPv2 Routing……Page 105
Configuring Enhanced Interior Gateway Routing Protocol (EIGRP)……Page 108
EIGRP Auto-Summarization……Page 109
Load Balancing: variance……Page 110
Authentication……Page 111
Troubleshooting EIGRP……Page 113
Configuration Example: EIGRP……Page 114
Configuring OSPF: Mandatory Commands……Page 118
Using Wildcard Masks with OSPF Areas……Page 119
Configuring OSPF: Optional Commands……Page 120
Verifying OSPF Configuration……Page 124
Configuration Example: Single Area OSPF……Page 125
Part V: Switching……Page 130
Command Modes……Page 132
Verifying Commands……Page 133
Setting Passwords……Page 134
Setting Interface Descriptions……Page 135
Configuring Static MAC Addresses……Page 136
Switch Port Security……Page 137
Verifying Switch Port Security……Page 138
Sticky MAC Addresses……Page 139
Configuration Example……Page 140
Creating Static VLANs……Page 144
Assigning Ports to VLANs……Page 145
Saving VLAN Configurations……Page 146
Erasing VLAN Configurations……Page 147
Configuration Example: VLANs……Page 148
Dynamic Trunking Protocol (DTP)……Page 152
Setting the Encapsulation Type……Page 153
VLAN Trunking Protocol (VTP)……Page 154
Inter-VLAN Communication Using an External Router: Router-on-a-Stick……Page 157
Inter-VLAN Communication Tips……Page 158
Configuration Example: Inter-VLAN Communication……Page 159
Spanning Tree Protocol……Page 166
EtherChannel……Page 177
Part VI: Extending the LAN……Page 186
Wireless Access Point Configuration: Linksys 300N Access Point……Page 188
Wireless Client Configuration: Linksys Wireless-N Notebook Adapter……Page 201
Part VII: Network Administration and Troubleshooting……Page 210
Boot System Commands……Page 212
Backing Up Configurations to a TFTP Server……Page 213
Restoring Configurations from a TFTP Server……Page 214
Restoring/Upgrading the Cisco IOS Software from a TFTP Server……Page 215
Restoring the Cisco IOS Software from ROM Monitor Mode Using Xmodem……Page 216
Restoring the Cisco IOS Software Using the ROM Monitor Environmental Variables and tftpdnld Command……Page 219
The Configuration Register……Page 220
Password-Recovery Procedures for Cisco Routers……Page 223
Password Recovery for 2960 Series Switches……Page 225
Cisco Discovery Protocol……Page 228
Using Telnet to Remotely Connect to Other Devices……Page 230
Configuring the Secure Shell Protocol (SSH)……Page 232
The ping Command……Page 234
Examples of Using the ping and the Extended ping Commands……Page 235
The traceroute Command……Page 236
Configuring Syslog……Page 238
Viewing the Routing Table……Page 240
OSI Layer 3 Testing……Page 241
Clearing Interface Counters……Page 242
debug Commands……Page 243
The ip http server Command……Page 244
The netstat Command……Page 245
Part VIII: Managing IP Services……Page 246
Configuring Dynamic NAT: One Private to One Public Address Translation……Page 248
Configuring PAT: Many Private to One Public Address Translation……Page 250
Configuring Static NAT: One Private to One Permanent Public Address Translation……Page 253
Troubleshooting NAT and PAT Configurations……Page 254
Configuration Example: PAT……Page 255
Configuring DHCP……Page 258
Configuring a DHCP Helper Address……Page 259
Configuration Example: DHCP……Page 260
Assigning IPv6 Addresses to Interfaces……Page 264
IPv6 and RIPng……Page 265
Configuration Example: IPv6 RIP……Page 266
IPv6 Tunnels: Manual Overlay Tunnel……Page 268
Static Routes in IPv6……Page 271
Verifying and Troubleshooting IPv6……Page 272
IPv6 Ping……Page 274
Part IX: WANs……Page 276
Configuring PPP on a Serial Line (Mandatory Commands)……Page 278
Configuring PPP on a Serial Line (Optional Commands): Authentication……Page 279
Verifying or Troubleshooting a Serial Link/PPP Encapsulation……Page 280
Configuration Example: PPP……Page 281
Configuring Frame Relay……Page 284
Configuration Examples: Frame Relay……Page 287
Part X: Network Security……Page 294
Access List Numbers……Page 296
ACL Keywords……Page 297
Creating Standard ACLs……Page 298
Applying Standard ACLs to an Interface……Page 299
Creating Extended ACLs……Page 300
The established Keyword (Optional)……Page 302
Using Sequence Numbers in Named ACLs……Page 303
Removing Specific Lines in Named ACLs Using Sequence Numbers……Page 304
Including Comments About Entries in ACLs……Page 305
Configuration Examples: ACLs……Page 306
Security Device Manager: Connecting with CLI……Page 310
Security Device Manager: Connecting with GUI……Page 312
SDM Express Wizard with No CLI Preconfiguration……Page 314
Resetting the Router to Factory Defaults Using SDM……Page 324
SDM User Interfaces……Page 325
SDM Monitor Mode……Page 331
Using SDM to Configure a Router to Act as a DHCP Server……Page 332
Using SDM to Configure an Interface as a DHCP Client……Page 334
Using SDM to Configure NAT/PAT……Page 339
What to Do If You Lose SDM Connectivity Because of an erase startup-config Command……Page 341
Part XI: Appendixes……Page 342
Appendix A: Binary/Hex/Decimal Conversion Chart……Page 344
Appendix B: Create Your Own Journal Here……Page 356