1. © 2004 Cisco Systems, Inc. All rights reserved. Operating and Configuring Cisco IOS Devices Starting a Switch INTRO v2.0—8-1

2. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-2 Outline Overview Physical Startup of the Catalyst Switch Switch LED Indicators Viewing Initial Boot Up Output from the Switch Logging In to the Switch Examining the Help Facility in the Switch CLI Configuring a Switch from the Command Line Showing the Switch Initial Startup Status Summary Lab Exercise 8-1: Cisco Remote Lab Connection Lab Exercise 8-2: Switch Start-up and Initial Configuration

3. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-3 System startup routines initiate switch software. Initial startup uses default configuration parameters. Initial Startup of the Catalyst Switch

4. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-4 Catalyst 2950 Switch LED Indicators

5. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-5 Initial Bootup Output from the Catalyst 2950 Switch

6. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-6 Initial Configuration of the Catalyst 2950 Switch Using Setup

7. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-7 Logging In to the Switch and Entering the Privileged EXEC Mode

8. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-8 Switch Command-Line Help Facilities

9. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-9 Configuration modes: Global configuration mode –wg_sw_a#configure terminal –wg_sw_a(config)# Interface configuration mode –wg_sw_a(config)#interface e0/1 –wg_sw_a(config-if)# Configuring the Switch

10. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-10 Sets the local identity for the switch Configuring Switch Identification

11. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-11 Example: wg_sw_a(config)#interface vlan 1 wg_sw_a(config-if)#ip address 10.5.5.11 255.255.255.0 wg_sw_a(config-if)#no shutdown Note: It is necessary to use the no shutdown command to make the interface operational. wg_sw_a(config-if)#interface vlan 1 wg_sw_a(config-if)#ip address {ip address} {mask} Configuring the Switch IP Address

12. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-12 Example: wg_sw_a(config)#ip default-gateway 172.20.137.1 wg_sw_a(config)#ip default-gateway {ip address} Configuring the Switch Default Gateway

13. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-13 Showing Switch Initial Startup Status wg_sw_a#show version Displays the configuration of the system hardware, software version, names and sources of configuration files, and boot images wg_sw_a#show running-config Displays current active configuration file of the switch wg_sw_a#show interfaces Displays statistics for all interfaces configured on the switch

14. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-14 Switch show version Command

15. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-15 Switch show interfaces Command

16. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-16 Summary The startup of a Catalyst switch requires verifying the physical installation, powering up the switch, and viewing the Cisco IOS software output on the console. The Catalyst switches have several status LEDs that are generally lit in green when the switch is functioning normally but turn amber when there is a malfunction. The Catalyst POST is executed only when the switch is powered up. During initial startup, if POST test failures are detected, they are reported to the console. If POST completes successfully, the switch can be configured.

17. © 2004 Cisco Systems, Inc. All rights reserved. INTRO v2.0—8-17 Summary (Cont.) When starting any mode on a Catalyst switch, begin in user EXEC mode. To change modes, a password must be entered. The Catalyst switch CLI provides a help facility that is similar to the router’s help facility. The Catalyst IOS switches can be configured using the global and other configuration modes similar to the routers. After logging into a Catalyst IOS switch, the switch software and hardware status can be verified using the show version, show running-config and the show interfaces commands.