1. Starting the switch Configuring the Switch
Switch Configuration
Starting the switch
Configuring the Switch

2. Switch Overview indicates status
Switches contain CPU, RAM, Operating System
POST
When switched on – System LED
indicates status
Color System Status
Off System is not powered on.
Green System is operating normally.
Amber System is receiving power but is not functioning properly.

3. Status LED Overview Mode button toggles between different port modes
Port mode displayed on Port Mode LEDs
Individual Port status above each port

4. Port Status 1

5. Port Status 2

6. User Mode Commands

7. Switch Management Connect to switch via console connection
Give switch IP address on management VLAN 1
Switch(config)#interface vlan 1
Switch(config-if)#ip address
Use web-browser based management
Switch(config)#ip http server

8. Switch Configuration 1 Erase any existing settings Reload the switch
VLAN database
Configuration in NVRAM
Reload the switch

9. Switch Configuration 2 - Security
Static MAC address
Port Security

10. Switches
Contain:
CPU
RAM
Operating System

11. LED Indicators
Default setting

12. POST Test & Initial boot Up, and Help
Console into a switch with the same cable used to console into a router
Use same settings in Hyperterminal
Context sensitive help is available from the command line – using the question mark as you would in router help.

13. Catalyst IOS Intro User EXEC mode and Privileged EXEC mode.
enable command.
IOS based switch is just like the router IOS.
configure command – go to global config mode.
copy run start – to save config to NVRAM.
Host Name configuration characters
hostname [name]
Comment to help identify the interface.
description [description-string] - interface config. mode
Use quotes when using spaces in string.
IOS-based: same as on a router.
access help by entering ?

14. Default Configuration
When powered up w/out configuration, the default name is Switch.
No passwords have been configured.
All switch ports are part of VLAN 1
Switch has no IP address
Show version shows the IOS version and the configuration register.

15. Actual Configuration First,
Remove any VLAN info (delete flash: vlan.dat)
Erase startup
Reload
Follow router configuration method to configure hostname, line passwords, set a default gateway, etc.
Set IP address for management VLAN1 for telnet access.
Fast Ethernet ports default to auto-speed and auto-duplex, or they can be set manually.
Management of a switch can also be done using a GUI interface as long as HTTP service is turned on.

16. Remote Access to Switch
To telnet, ping, or globally manage the switch:
Enter an IP address and management VLAN.
Configuration
interface vlan 1
ip address [address][mask]
ip default-gateway [address]
Verify with show ip interface

17. Defining port speed / duplex
Interface config mode:
speed [10 | 100 | auto]
Line mode is either full duplex or half duplex.
duplex [auto | full | half]
auto option only for fixed Fast Ethernet TX ports.

18. Backup on TFTP Server IOS-based commands:
copy run tftp – to save config file to tftp server.
copy tftp run – to download config from tftp server to active config and to NVRAM.

19. VLAN Configuration Entering VLAN Database Adding VLANs
Switch#vlan database
Switch(vlan)#
Adding VLANs
Switch(vlan)#vlan 15 name Accounting
Deleting VLAN database
Switch#delete flash:vlan.dat
Assigning ports to a VLAN
Switch(config)#interface FastEthernet 0/12
Switch(config-if)#switchport access vlan 15
Verify VLAN Configuration
Switch#show vlan

20. MAC Address Table
Switches learn the MAC addresses of workstations that are connected to their switch ports by examining the source address of frames that are received on that port – then they are placed in a MAC table.
If no frames are seen with a previously learned address, the MAC address entry is automatically discarded or aged out after 300 seconds.

21. Static MAC addresses
If entered by an admin, it will be permanent and not age out or be cleared out by powering down the switch.
The node has to be attached to the switch.

22. Port Security Anyone can plug in if they are in the open
Port security can be set on an interface – so that, for instance, the number of MAC addresses that can be learned on any one interface could be 1.
Port security can be verified with:
Show port security
Note commands available

23. Adding a Switch

24. MAC Addresses

25. Password Recovery
On a Cisco Catalyst 2900, hold down the MODE button during switch startup to begin the process.
Instructions attached for Password Recovery on a Cisco 1900 Catalyst Switch.

26. Module 6
Switch Configuration
END