Connect & Configure Cisco Networking Devices: Part 2

Table of Contents

1. Main Menu
2. Part 2: Basic Switch Operation and Configuration
3. 2.1: LAN Switching
4. LAN Switching Continued
5. 2.2: Basic Configuration Commands
6. 2.2.1: Privilege Exec Mode Commands
7. 2.2.1: Global Configuration Mode Commands
8. 2.2.3: Line Mode Commands
9. 2.3: Displaying the contents of the MAC Address Table
10. 2.4: Switch Interfaces
11. Switch Interface Configuration Continued
12. 2.5: Assigning an IP Address & Default Gateway to a 2950 Switch
13. 2.6: Configuring Port Security
14. Video: Basic Switch and Port Security Configuration
15. 2.7: The Spanning Tree Protocol (STP)
16. 2.7.2: STP Port States
17. 2.7.3: STP Configuration
18. Review Questions for Part 2

2.2.1: Privilege Exec Mode Commands

All of the following commands are entered in PRIVILEGE EXEC Mode after the prompt Switch#

SHOW VERSION

This is the only command that will show the contents of the configuration register and register settings. This command will also display the Version number of the IOS, the Version of the IOS in ROM, the Router name and uptime, where the router loaded the IOS from, and the file name. Processor board and revision number, the features installed with the current IOS, any Interfaces found on the router, the amount of NVRAM and the amount of FLASH memory.

SHOW FLASH

This command displays the contents of Flash memory. This includes the image file names and sizes.

DISABLE

Returns you to USER EXEC mode and the prompt: Switch>

SHOW STARTUP-CONFIG or SHOW CONFIGURATION

This will display the amount of NVRAM used to store the start-up configuration file called STARTUP-CONFIG and the file contents. This file is loaded when the Switch is initially started and copied into RAM.

SHOW RUNNING-CONFIG

This displays the current configuration on the Router at that moment in time IN RAM. The configuration file is called RUNNING-CONFIG. Any changes are implemented immediately but lost if not saved to NVRAM prior to Router reboot.

COPY RUNNING-CONFIG STARTUP-CONFIG

This command willreplace the existing start-up configuration file with the current running configuration file (RAM to NVRAM).

COPY STARTUP-CONFIG RUNNING-CONFIG

This will merge the start-up configuration with present running configuration in RAM.

ERASE STARTUP-CONFIG or ERASE NVRAM

This will erase NVRAM and the Start-up configuration file on the Router

CONFIGURE TERMINAL

Enters Global Configuration Mode, the prompt will change to: Switch(config)#