200-301 Portable Command Guide

Introduction

• Private Addressing Used in This Course
• Who Should Read This Course
• Optional Sections
• Organization of This Course

IPv4 Addressing—How It Works

• What Are IPv4 Addresses Used For?
• What Does an IPv4 Address Look Like?
• Network and Subnetwork Masks
• Ways to Write a Network or Subnet Mask
• Network, Node, and Broadcast Addresses
• Classes of IPv4 Addresses
• Classless Addressing
• Lessons Learned

How to Subnet IPv4 Addresses

• Subnetting a Class C Network Using Binary
• Subnetting a Class B Network Using Binary
• Binary ANDing

Variable Length Subnet Masking (VLSM)

• IP Subnet Zero
• VLSM Example

Route Summarization

• Example for Understanding Route Summarization
• Route Summarization and Route Flapping
• Requirements for Route Summarization

IPv6 Addressing—How It Works

• IPv6: A Very Brief Introduction
• What Does an IPv6 Address Look Like?
• Reducing the Notation of an IPv6 Address
• Prefix Length Notation
• IPv6 Address Types

Cables and Connections

• Connecting a Rollover Cable to Your Router or Switch
• Using a USB Cable to Connect to Your Router or Switch
• Terminal Settings
• LAN Connections
• Serial Cable Types
• Which Cable to Use?
• ANSI/TIA Cabling Standards

The Command-Line Interface

• Shortcuts for Entering Commands
• Using the Tab Key to Complete Commands
• Console Error Messages
• Using the Question Mark for Help
• enable Command
• exit Command
• end Command
• disable Command
• logout Command
• Setup Mode
• Keyboard Help
• History Commands
• terminal Commands
• show Commands
• Using the Pipe Parameter ( | ) with the show or more Commands
• Using the no and default Forms of Commands

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
• The mdix auto Command
• Setting Duplex Operation
• Setting Operation Speed
• Managing the MAC Address Table
• Configuration Example

VLANs

• Creating Static VLANs
• Assigning Ports to VLANs
• Using the range Command
• Configuring a Voice VLAN
• Verifying VLAN Information
• Saving VLAN Configurations
• Erasing VLAN Configurations
• Configuration Example: VLANs

VLAN Trunking Protocol and Inter-VLAN Communication

• Dynamic Trunking Protocol (DTP)
• Setting the VLAN Encapsulation Type
• VLAN Trunking Protocol (VTP)
• Verifying VTP
• Inter-VLAN Communication Using an External Router: Router-on-a-Stick
• Inter-VLAN Communication on a Multilayer Switch Through a Switch Virtual Interface
• Inter-VLAN Communication Tips
• Configuration Example: Inter-VLAN Communication

Spanning Tree Protocol

• Spanning Tree Protocol Definition
• Enabling Spanning Tree Protocol
• Changing the Spanning-Tree Mode
• 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
• Configuring Optional Spanning-Tree Features
• Enabling the Extended System ID
• Verifying STP
• Troubleshooting Spanning Tree Protocol
• Configuration Example: PVST+
• Spanning-Tree Migration Example: PVST+ to Rapid-PVST+

EtherChannel

• EtherChannel
• Configuration Example: EtherChannel

Cisco Discovery Protocol (CDP) and Link Layer Discovery Protocol (LLDP)

• Cisco Discovery Protocol
• Configuring CDP
• Verifying and Troubleshooting CDP
• CDP Design Tips
• Link Layer Discovery Protocol (802.1AB)
• Configuring LLDP (802.1AB)
• Verifying and Troubleshooting LLDP

Configuring a 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
• Assigning an IPv4 Address to a Fast Ethernet Interface
• Assigning an IPv4 Address to a Gigabit Ethernet Interface
• Assigning IPv6 Addresses to Interfaces
• Creating a Message-of-the-Day Banner
• Creating a Login Banner
• Mapping a Local Host Name to a Remote IP Address
• The no ip domain-lookup Command
• The logging synchronous Command
• The exec-timeout Command
• Saving Configurations
• Erasing Configurations
• The write Command
• Verifying Your Configurations Using show Commands
• EXEC Commands in Configuration Mode: The do Command
• Configuration Example: Basic Router Configuration

Static Routing

• Configuring an IPv4 Static Route
• Static Routes and Recursive Lookups
• The permanent Keyword
• Floating Static Routes in IPv4 and Administrative Distance
• Configuring an IPv4 Default Route
• Verifying IPv4 Static Routes
• Configuration Example: IPv4 Static Routes
• Configuring an IPv6 Static Route
• Floating Static Routes in IPv6
• Configuring an IPv6 Default Route
• Verifying IPv6 Static Routes

Open Shortest Path First (OSPF)

• OSPFv2 Versus OSPFv3
• Configuring OSPF
• Using Wildcard Masks with OSPF Areas
• Loopback Interfaces
• Router ID
• DR/BDR Elections
• Timers
• Verifying OSPFv2 Configurations
• Troubleshooting OSPFv2
• Configuration Example: Single-Area OSPF

DHCP

• Configuring a DHCP Server on an IOS Router
• Using Cisco IP Phones with a DHCP Server
• Verifying and Troubleshooting DHCP Configuration
• Configuring a DHCP Helper Address
• Configuring a DHCP Client on a Cisco IOS Software Ethernet Interface
• Configuration Example: DHCP

Network Address Translation (NAT)

• 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

Configuring Network Time Protocol (NTP)

• NTP Configuration
• NTP Design
• Securing NTP
• Verifying and Troubleshooting NTP
• Setting the Clock on a Router
• Using Time Stamps
• Configuration Example: NTP

Layer Two Security Features

• Setting Passwords on a Switch
• Configuring Static MAC Addresses
• Configuring Switch Port Security
• Configuring Sticky MAC Addresses
• Verifying Switch Port Security
• Recovering Automatically from Error-Disabled Ports
• Verifying Autorecovery of Error-Disabled Ports
• Configuring DHCP Snooping
• Configuring Dynamic ARP Inspection (DAI)
• Configuration Example: Switch Security

Managing Traffic Using Access Control Lists (ACLs)

• 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
• The log Keyword
• 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
• Tips for Configuring ACLs
• IPv6 ACLs
• Verifying IPv6 ACLs
• Configuration Examples: IPv4 ACLs
• Configuration Examples: IPv6 ACLs

Device Monitoring and Hardening

• Device Monitoring
• Configuration Backups
• Implementing Logging
• Device Hardening

Configuring and Securing a WLAN AP

• Initial Setup of a Wireless LAN Controller (WLC)
• Monitoring the WLC
• Configuring a VLAN (Dynamic) Interface
• Configuring a DHCP Scope
• Configuring a WLAN
• Defining a RADIUS Server
• Exploring Management Options
• Configuring a WLAN Using WPA2 PSK

Appendix A: How to Count in Decimal, Binary, and Hexadecimal

• How to Count in Decimal
• How to Count in Binary
• How to Count in Hexadecimal
• Representing Decimal, Binary, and Hexadecimal Numbers

Appendix B: How to Convert Between Number Systems

• How to Convert from Decimal to Binary
• How to Convert from Binary to Decimal
• How to Convert from Decimal IP Addresses to Binary and from Binary IP Addresses to Decimal
• How to Convert from Hexadecimal to Binary
• How to Convert from Binary to Hexadecimal
• How to Convert from Decimal to Hexadecimal
• How to Convert from Hexadecimal to Decimal

Appendix C: Binary/Hex/Decimal Conversion Chart