1 © 2003, Cisco Systems, Inc. All rights reserved. CCNA 3 v3.0 Module 6 Switch Configuration

222 © 2003, Cisco Systems, Inc. All rights reserved. Objectives Starting the switch Configuring the switch

333 © 2003, Cisco Systems, Inc. All rights reserved. Physical Startup of Catalyst Switches Switches typically have no power switch to turn them on and off. They simply connect or disconnect from a power source.

444 © 2003, Cisco Systems, Inc. All rights reserved. Switch LED Indicators

555 © 2003, Cisco Systems, Inc. All rights reserved. Verifying Port LEDs During Switch POST

666 © 2003, Cisco Systems, Inc. All rights reserved. Connecting a Switch to a PC

777 © 2003, Cisco Systems, Inc. All rights reserved. Examining Help in the Switch CLI

888 © 2003, Cisco Systems, Inc. All rights reserved. Show Commands in User EXEC Mode

999 © 2003, Cisco Systems, Inc. All rights reserved. Verifying the Catalyst Switch Default Configuration show running-config show interface show vlan show flash show version

10 © 2003, Cisco Systems, Inc. All rights reserved. Configuring the Catalyst Switch To overwrite any existing configuration, follow these steps: Remove any existing VLAN information by deleting the VLAN database file, vlan.dat from the Flash memory directory. Erase the backup configuration file startup- config. Reload the switch.

11 © 2003, Cisco Systems, Inc. All rights reserved. Configuring the Catalyst Switch Web Management Interface

12 © 2003, Cisco Systems, Inc. All rights reserved. Managing the MAC Address Table Switches learn the MAC addresses of PCs or workstations that are connected to their switch ports by examining the source address of frames that are received on that port.

13 © 2003, Cisco Systems, Inc. All rights reserved. Configuring Static MAC Addresses A MAC address can be permanently assigned to an interface. The following are reasons to assign a permanent MAC address to an interface: - The MAC address will not be aged out automatically by the switch. - A specific server or user workstation must be attached to the port and the MAC address is known. - Security is enhanced.

14 © 2003, Cisco Systems, Inc. All rights reserved. Configuring Port Security

15 © 2003, Cisco Systems, Inc. All rights reserved. Executing Adds, Moves, and Changes

16 © 2003, Cisco Systems, Inc. All rights reserved. Managing Switch Operation An administrator should document and maintain the operational configuration files for networking devices. The most recent running-configuration file should be backed up on a server or disk. The Cisco IOS Software should also be backed up to a local server. The Cisco IOS Software can then be reloaded to Flash memory if needed.

17 © 2003, Cisco Systems, Inc. All rights reserved. Passwords For security and management purposes, passwords must be set on the console and vty lines. An enable password and an enable secret password must also be set.

18 © 2003, Cisco Systems, Inc. All rights reserved. Firmware and IOS Images IOS and firmware images are periodically released with bugs fixed, new features introduced, and performance improved. If the network can be made more secure, or can operate more efficiently with a new version of the IOS, then the IOS should be upgraded To upgrade the IOS, download a copy of the new image to a local server from the Cisco Connection Online (CCO) Software Center.