[...]... Security 11 0 Verifying Switch Port Security 11 1 Sticky MAC Addresses 11 2 Configuration Example 11 3 10 8 Chapter 12 VLANs 11 7 Creating Static VLANs 11 7 Using VLAN Configuration Mode 11 7 Using VLAN Database Mode 11 8 Assigning Ports to VLANs 11 8 Using the range Command 11 9 Verifying VLAN Information 11 9 Saving VLAN Configurations 11 9 Erasing VLAN Configurations 12 0 Configuration Example: VLANs 12 1 Chapter 13 ... interface Command 215 Clearing Interface Counters 215 Using CDP to Troubleshoot 216 The traceroute Command 216 The show controllers Command 216 debug Commands 216 Using Time Stamps 217 xvii Operating System IP Verification Commands 217 The ip http server Command 217 The netstat Command 218 Part VIII Managing IP Services 219 Chapter 23 Network Address Translation 2 21 Private IP Addresses: RFC 19 18 2 21 Configuring... Switching 10 3 Chapter 11 Configuring a Switch Help Commands 10 5 Command Modes 10 5 10 5 xiv Verifying Commands 10 6 Resetting Switch Configuration 10 7 Setting Host Names 10 7 Setting Passwords 10 7 Setting IP Addresses and Default Gateways Setting Interface Descriptions 10 8 Setting Duplex Operation 10 9 Setting Operation Speed 10 9 Managing the MAC Address Table 10 9 Configuring Static MAC Addresses 10 9 Switch... Spanning Tree 14 7 Configuration Example: STP 14 7 EtherChannel 15 0 Interface Modes in EtherChannel 15 1 Guidelines for Configuring EtherChannel 15 1 Configuring Layer 2 EtherChannel 15 2 Verifying EtherChannel 15 2 Configuration Example: EtherChannel 15 3 Part VI Extending the LAN 15 9 Chapter 15 Implementing a Wireless LAN 16 1 Wireless Access Point Configuration: Linksys 300N Access Point 16 1 Wireless Client... Messages 207 The ping Command 207 Examples of Using the ping and the Extended ping Commands 208 The traceroute Command 209 Chapter 21 SNMP and Syslog 211 Configuring SNMP 211 Configuring Syslog 211 Chapter 22 Basic Troubleshooting 213 Viewing the Routing Table 213 Determining the Gateway of Last Resort 214 Determining the Last Routing Update 214 OSI Layer 3 Testing 214 OSI Layer 7 Testing 215 Interpreting... Protocol 13 9 Enabling Spanning Tree Protocol 13 9 Configuring the Root Switch 14 0 xv Configuring a Secondary Root Switch 14 1 Configuring Port Priority 14 1 Configuring the Path Cost 14 2 Configuring the Switch Priority of a VLAN 14 2 Configuring STP Timers 14 3 Verifying STP 14 3 Optional STP Configurations 14 4 Changing the Spanning-Tree Mode 14 5 Extended System ID 14 6 Enabling Rapid Spanning Tree 14 6 Troubleshooting...x Chapter 17 Password-Recovery Procedures and the Configuration Register 19 3 Chapter 18 Cisco Discovery Protocol (CDP) Chapter 19 Telnet and SSH 2 01 203 Chapter 20 The ping and traceroute Commands Chapter 21 SNMP and Syslog 211 Chapter 22 Basic Troubleshooting Part VIII 213 Managing IP Services 219 Chapter 23 Network Address Translation Chapter 24 DHCP Chapter 25 IPv6 Part IX 207 2 21 2 31 237 WANs... Notebook Adapter 17 4 Part VII Network Administration and Troubleshooting 18 3 Chapter 16 Backing Up and Restoring Cisco IOS Software and Configurations 18 5 Boot System Commands 18 5 The Cisco IOS File System 18 6 Backing Up Configurations to a TFTP Server 18 6 Restoring Configurations from a TFTP Server 18 7 Backing Up the Cisco IOS Software to a TFTP Server 18 8 Restoring/Upgrading the Cisco IOS Software... Inter-VLAN Routing 12 5 Dynamic Trunking Protocol (DTP) 12 5 Setting the Encapsulation Type 12 6 VLAN Trunking Protocol (VTP) 12 7 Using Global Configuration Mode 12 7 Using VLAN Database Mode 12 8 Verifying VTP 13 0 Inter-VLAN Communication Using an External Router: Router-on-a-Stick 13 0 Inter-VLAN Communication Tips 13 1 Configuration Example: Inter-VLAN Communication 13 2 Chapter 14 STP and EtherChannel 13 9 Spanning... Server 18 8 Restoring the Cisco IOS Software from ROM Monitor Mode Using Xmodem 18 9 Restoring the Cisco IOS Software Using the ROM Monitor Environmental Variables and tftpdnld Command 19 2 xvi Chapter 17 Password-Recovery Procedures and the Configuration Register 19 3 The Configuration Register 19 3 A Visual Representation 19 3 What the Bits Mean 19 4 The Boot Field 19 4 Console Terminal Baud Rate Settings 19 5 . 11 1 Sticky MAC Addresses 11 2 Configuration Example 11 3 Chapter 12 VLANs 11 7 Creating Static VLANs 11 7 Using VLAN Configuration Mode 11 7 Using VLAN Database Mode 11 8 Assigning Ports to VLANs 11 8 Using. Switching 10 3 Chapter 11 Configuring a Switch 10 5 Help Commands 10 5 Command Modes 10 5 xiv Verifying Commands 10 6 Resetting Switch Configuration 10 7 Setting Host Names 10 7 Setting Passwords 10 7 Setting. 10 3 Chapter 11 Configuring a Switch 10 5 Chapter 12 VLANs 11 7 Chapter 13 VLAN Trunking Protocol and Inter-VLAN Routing 12 5 Chapter 14 STP and EtherChannel 13 9 Part VI Extending the LAN 15 9 Chapter 15 Implementing