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

© 2004 Cisco Systems, Inc. All rights reserved.

Operating and Configuring Cisco IOS Devices

Starting a Switch

INTRO v2.0—8-1

© 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


• System startup routines initiate switch software.

• Initial startup uses default configuration parameters.

Initial Startup of the Catalyst Switch


Catalyst 2950 Switch LED Indicators


Initial Bootup Output from the Catalyst 2950 Switch


Initial Configuration of the Catalyst 2950 Switch Using Setup


Logging In to the Switch and Entering the Privileged EXEC Mode


Switch Command-Line Help Facilities


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


• Sets the local identity for the switch

Configuring Switch Identification


Example:

wg_sw_a(config)#interface vlan 1wg_sw_a(config-if)#ip address 10.5.5.11 255.255.255.0wg_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 1wg_sw_a(config-if)#ip address {ip address} {mask}

Configuring the Switch IP Address


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


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


Switch show version Command


Switch show interfaces Command


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.


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.

Documents

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