CCNA Portable Command Guide (2nd Edition) by Empson, Scott -- Read -- Imperial Library of Trantor

Index

Introduction Part I: TCP/IP Version 4 Chapter 1. How to Subnet

Class A–E Addresses Converting Between Decimal Numbers and Binary Subnetting a Class C Network Using Binary Subnetting a Class B Network Using Binary Binary ANDing

So Why AND? Shortcuts in Binary ANDing

The Enhanced Bob Maneuver for Subnetting

Chapter 2. VLSM

IP Subnet Zero VLSM Example

Step 1 Determine How Many H Bits Will Be Needed to Satisfy the Largest Network Step 2 Pick a Subnet for the Largest Network to Use Step 3 Pick the Next Largest Network to Work With Step 4 Pick the Third Largest Network to Work With Step 5 Determine Network Numbers for Serial Links

Chapter 3. Route Summarization

Example for Understanding Route Summarization

Step 1: Summarize Winnipeg's Routes Step 2: Summarize Calgary's Routes Step 3: Summarize Edmonton's Routes Step 4: Summarize Vancouver's Routes

Route Summarization and Route Flapping Requirements for Route Summarization

Part II: Introduction to Cisco Devices Chapter 4. Cables and Connections

Connecting a Rollover Cable to Your Router or Switch Terminal Settings LAN Connections Serial Cable Types Which Cable to Use? 568A Versus 568B Cables

Chapter 5. The Command-Line Interface

Shortcuts for Entering Commands Using the Key to Complete Commands Using the Question Mark for Help enable Command exit Command disable Command logout Command Setup Mode Keyboard Help History Commands show Commands

Part III: Configuring a Router Chapter 6. Configuring a Single Cisco Router

Router Modes Entering Global Configuration Mode Configuring a Router Name Configuring Passwords Password Encryption Interface Names Moving Between Interfaces Configuring a Serial Interface Configuring a Fast Ethernet Interface Creating a Message-of-the-Day Banner Creating a Login Banner Setting the Clock Time Zone Assigning a Local Host Name to an IP Address The no ip domain-lookup Command The logging synchronous Command The exec-timeout Command Saving Configurations Erasing Configurations show Commands EXEC Commands in Configuration Mode: The do Command Configuration Example: Basic Router Configuration

Part IV: Routing Chapter 7. Static Routing

Configuring a Static Route on a Router The permanent Keyword (Optional) Static Routes and Administrative Distance (Optional) Configuring a Default Route on a Router Verifying Static Routes Configuration Example: Static Routes

Chapter 8. RIP

The ip classless Command RIP Routing: Mandatory Commands RIP Routing: Optional Commands Troubleshooting RIP Issues Configuration Example: RIPv2 Routing

Chapter 9. EIGRP

Configuring Enhanced Interior Gateway Routing Protocol (EIGRP) EIGRP Auto-Summarization Load Balancing: variance Bandwidth Use Authentication Verifying EIGRP Troubleshooting EIGRP Configuration Example: EIGRP

Chapter 10. Single Area OSPF

Configuring OSPF: Mandatory Commands Using Wildcard Masks with OSPF Areas Configuring OSPF: Optional Commands

Loopback Interfaces Router ID DR/BDR Elections Modifying Cost Metrics Authentication: Simple Authentication: Using MD5 Encryption Timers Propagating a Default Route

Verifying OSPF Configuration Troubleshooting OSPF Configuration Example: Single Area OSPF

Part V: Switching Chapter 11. Configuring a Switch

Help Commands Command Modes Verifying Commands Resetting Switch Configuration Setting Host Names Setting Passwords Setting IP Addresses and Default Gateways Setting Interface Descriptions Setting Duplex Operation Setting Operation Speed Managing the MAC Address Table Configuring Static MAC Addresses Switch Port Security Verifying Switch Port Security Sticky MAC Addresses Configuration Example

Chapter 12. VLANs

Creating Static VLANs

Using VLAN Configuration Mode Using VLAN Database Mode

Assigning Ports to VLANs Using the range Command Verifying VLAN Information Saving VLAN Configurations Erasing VLAN Configurations Configuration Example: VLANs

Chapter 13. VLAN Trunking Protocol and Inter-VLAN Routing

Dynamic Trunking Protocol (DTP) Setting the Encapsulation Type VLAN Trunking Protocol (VTP)

Using Global Configuration Mode Using VLAN Database Mode

Verifying VTP Inter-VLAN Communication Using an External Router: Router-on-a-Stick Inter-VLAN Communication Tips Configuration Example: Inter-VLAN Communication

Chapter 14. STP and EtherChannel

Spanning Tree Protocol

Enabling Spanning Tree Protocol Configuring the Root Switch Configuring a Secondary Root Switch Configuring Port Priority Configuring the Path Cost Configuring the Switch Priority of a VLAN Configuring STP Timers Verifying STP Optional STP Configurations Changing the Spanning-Tree Mode Extended System ID Enabling Rapid Spanning Tree Troubleshooting Spanning Tree Configuration Example: STP

EtherChannel

Interface Modes in EtherChannel Guidelines for Configuring EtherChannel Configuring Layer 2 EtherChannel Verifying EtherChannel Configuration Example: EtherChannel

Part VI: Extending the LAN Chapter 15. Implementing a Wireless LAN

Wireless Access Point Configuration: Linksys 300N Access Point Wireless Client Configuration: Linksys Wireless-N Notebook Adapter

Part VII: Network Administration and Troubleshooting Chapter 16. Backing Up and Restoring Cisco IOS Software and Configurations

Boot System Commands The Cisco IOS File System Backing Up Configurations to a TFTP Server Restoring Configurations from a TFTP Server Backing Up the Cisco IOS Software to a TFTP Server Restoring/Upgrading the Cisco IOS Software from a TFTP Server Restoring the Cisco IOS Software from ROM Monitor Mode Using Xmodem Restoring the Cisco IOS Software Using the ROM Monitor Environmental Variables and tftpdnld Command

Chapter 17. Password-Recovery Procedures and the Configuration Register

The Configuration Register

A Visual Representation What the Bits Mean The Boot Field Console Terminal Baud Rate Settings Changing the Console Line Speed: CLI Changing the Console Line Speed: ROM Monitor Mode

Password-Recovery Procedures for Cisco Routers Password Recovery for 2960 Series Switches

Chapter 18. Cisco Discovery Protocol (CDP)

Cisco Discovery Protocol

Chapter 19. Telnet and SSH

Using Telnet to Remotely Connect to Other Devices Configuring the Secure Shell Protocol (SSH)

Chapter 20. The ping and traceroute Commands

ICMP Redirect Messages The ping Command Examples of Using the ping and the Extended ping Commands The traceroute Command

Chapter 21. SNMP and Syslog

Configuring SNMP Configuring Syslog

Chapter 22. Basic Troubleshooting

Viewing the Routing Table Determining the Gateway of Last Resort Determining the Last Routing Update OSI Layer 3 Testing OSI Layer 7 Testing Interpreting the show interface Command Clearing Interface Counters Using CDP to Troubleshoot The traceroute Command The show controllers Command debug Commands Using Time Stamps Operating System IP Verification Commands The ip http server Command The netstat Command

Part VIII: Managing IP Services Chapter 23. Network Address Translation

Private IP Addresses: RFC 1918 Configuring Dynamic NAT: One Private to One Public Address Translation Configuring PAT: Many Private to One Public Address Translation Configuring Static NAT: One Private to One Permanent Public Address Translation Verifying NAT and PAT Configurations Troubleshooting NAT and PAT Configurations Configuration Example: PAT

Chapter 24. DHCP

Configuring DHCP Verifying and Troubleshooting DHCP Configuration Configuring a DHCP Helper Address DHCP Client on a Cisco IOS Software Ethernet Interface Configuration Example: DHCP

Chapter 25. IPv6

Assigning IPv6 Addresses to Interfaces IPv6 and RIPng Configuration Example: IPv6 RIP IPv6 Tunnels: Manual Overlay Tunnel Static Routes in IPv6 Floating Static Routes in IPv6 Verifying and Troubleshooting IPv6 IPv6 Ping

Part IX: WANs Chapter 26. HDLC and PPP

Configuring HDLC Encapsulation on a Serial Line Configuring PPP on a Serial Line (Mandatory Commands) Configuring PPP on a Serial Line (Optional Commands): Compression Configuring PPP on a Serial Line (Optional Commands): Link Quality Configuring PPP on a Serial Line (Optional Commands): Multilink Configuring PPP on a Serial Line (Optional Commands): Authentication Verifying or Troubleshooting a Serial Link/PPP Encapsulation Configuration Example: PPP

Chapter 27. Frame Relay

Configuring Frame Relay

Setting the Frame Relay Encapsulation Type Setting the Frame Relay Encapsulation LMI Type Setting the Frame Relay DLCI Number Configuring a Frame Relay map Statement Configuring a Description of the Interface (Optional) Configuring Frame Relay Using Subinterfaces

Verifying Frame Relay Troubleshooting Frame Relay Configuration Examples: Frame Relay

Part X: Network Security Chapter 28. IP Access Control List Security

Access List Numbers Using Wildcard Masks ACL Keywords Creating Standard ACLs Applying Standard ACLs to an Interface Verifying ACLs Removing ACLs Creating Extended ACLs Applying Extended ACLs to an Interface The established Keyword (Optional) Creating Named ACLs Using Sequence Numbers in Named ACLs Removing Specific Lines in Named ACLs Using Sequence Numbers Sequence Number Tips Including Comments About Entries in ACLs Restricting Virtual Terminal Access Configuration Examples: ACLs

Chapter 29. Security Device Manager

Security Device Manager: Connecting with CLI Security Device Manager: Connecting with GUI SDM Express Wizard with No CLI Preconfiguration Resetting the Router to Factory Defaults Using SDM SDM User Interfaces

Configuring Interfaces Using SDM Configuring Routing Using SDM

SDM Monitor Mode Using SDM to Configure a Router to Act as a DHCP Server Using SDM to Configure an Interface as a DHCP Client Using SDM to Configure NAT/PAT What to Do If You Lose SDM Connectivity Because of an erase startup-config Command

Part XI: Appendixes Appendix A. Binary/Hex/Decimal Conversion Chart Appendix B. Create Your Own Journal Here

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