Initial Switch Router Configurations

Step 1 Check that the switch router is set for the correct AC (or DC) power voltages.

Refer to the Catalyst 2948G-L3 Hardware Installation Guide for correct power voltages

Step 2 Connect the cables to the switch router.

Step 3 Connect a console terminal to the switch router.

Step 4 Start up the switch router.

Step 5 Enter CLI configuration mode by answering no when you are prompted to enter the initial dialog:

Would you like to enter the initial dialog? [yes]: no

You see the following user EXEC prompt: Router>

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Note In Step 5 you can choose to answer yes and continue to use the configuration menu that is provided.

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• Enable password---The enable password is a nonencrypted password. It can contain any number of uppercase and lowercase alphanumeric characters. Give the enable password only to users permitted to make configuration changes to the switch router.

• Enable secret password---The enable secret password is a secure, encrypted password. By setting an encrypted password, you can prevent unauthorized configuration changes. On systems running Cisco IOS, you must type in the enable secret password before you can access global configuration mode.You must type in the enable secret password to access boot ROM software.

An enable secret password can contain from 1 to 25 uppercase and lowercase alphanumeric characters. The first character cannot be a number. Spaces are valid password characters. Leading spaces are ignored; trailing spaces are recognized.

You can remotely configure the Catalyst 2948G-L3 switch router through the management port, but first you must configure an IP address so that the switch router is reachable. There are two ways to configure the management port interface: manually from the command-line interface (CLI) or by copying the configuration from the BOOTP server into NVRAM.

You can configure the management port from an IP connected network. To obtain remote management access using Telnet, use the following steps.

Step	Command	Purpose
1 .	Router> enable Router#	Enters enable mode. The # prompt indicates enable mode.
2 .	Router# configure terminal Router(config)#	Enters global configuration mode. You can also abbreviate the command to config t. The Router(config)# prompt indicates that you are in global configuration mode.
3 .	Router(config)# enable password password	Sets the enable password. See the "About Passwords" section.
4 .	Router(config)# enable secret password	Enters an enable secret password. Once set, a user must enter the enable secret password to gain access to global configuration mode.
5 .	Router(config)# interface f1 Router(config-if)#	Enters interface configuration mode on the Fast Ethernet interface. You can use any Fast Ethernet interface f1-f48 or any Gigabit Ethernet interface g49-g50 to configure the management port.
6 .	Router(config-if)# ip address ip-address subnetmask	Enters the IP address and IP subnet mask for the Fast Ethernet interface.
7 .	Router(config-if)# no shutdown	Enables the interface.
8 .	Router(config-if)# exit Router(config)#	Returns to global configuration mode.
9 .	Router(config)# line vty line-number Router(config-line)#	Enters line configuration mode for virtual terminal connections. Commands entered in this mode control the operation of Telnet sessions to the Catalyst 2948G-L3 switch router.
10 .	Router(config-line)# password password	Enters a password for Telnet sessions.
11 .	Router(config-line)# Ctrl-Z Router#	Returns to privileged EXEC mode.
12 .	Router# copy running-config startup-config	Saves your configuration changes to NVRAM.

The Catalyst 2948G-L3 switch router should now be operating correctly. You can now use Telnet to remotely assign and verify configurations.

Router# show running-config

• To see the configuration in NVRAM, enter the following command:

Router# show startup-config

If you made changes to the configuration, but did not yet write the changes to NVRAM, the results of the show running-config will differ from the results of the show startup-config command.

Step	Command	Purpose
1 .	Router# configure terminal Router(config)#	Enters global configuration mode.
2 .	Router(config)# hostname name-string	Enters a system name. In this example, we set the hostname to "2948G-L3."
3 .	2948G-L3(config)# end 2948G-L3#	Returns to privileged EXEC mode.
4 .	2948G-L3# copy running-config startup-config	Copies your configuration changes to NVRAM.

2948G-L3# pwd
bootflash:

2948G-L3# dir          
Directory of bootflash:/
 
  1  -rw-     3153784              <no date>  cat2948g-in-mz.old
  2  -rw-     3153932              <no date>  cat2948g-in-mz
 
16777216 bytes total (7315372 bytes free)
2948G-L3#

Caution When deleting files from memory, be careful not to delete all the system images. You should always retain one known good image as a backup image.

The following is an example of the delete command. The delete command requires you to specify the filename.

2948G-L3# dir          
Directory of bootflash:/
 
  1  -rw-     3153784              <no date>  cat2948g-in-mz.old
  2  -rw-     3153932              <no date>  cat2948g-in-mz
 
16777216 bytes total (7315372 bytes free)
2948G-L3# delete cat2948g-in-mz.old
Delete filename [cat2948g-in-mz.old]?  
Delete bootflash:cat2948g-in-mz.old? [confirm]
2948G-L3# dir
Directory of bootflash:/
 
  2  -rw-     3153932              <no date>  cat2948g-in-mz
 
16777216 bytes total (7315372 bytes free)
 

Tips Before you copy software between the network server and boot flash memory in the switch router, do the following:

• Make sure you have access to the network server, and obtain its IP address and name.

• Verify that the server has sufficient room to accommodate the Cisco IOS software image.

• Check the filename requirements and file space of the network server.

To create a backup of the system software on a TFTP server, use the following steps beginning in privileged EXEC mode.

Step	Command	Purpose
1 .	2948G-L3# dir bootflash:	Displays the contents of boot flash memory, including the names of the images that currently reside there. Note the name of the image file you want to copy.
2 .	2948G-L3# copy bootflash: tftp:	Copies a file from boot flash memory to a TFTP server. Be sure to include a colon at the end of the tftp parameter as shown in this example.
3 .	Source filename []? cat2948g-in-mz	Prompts you to enter the name of the system image.
4 .	Address or name of remote host []? 171.69.1.129	Enters the domain name or IP address of the TFTP server. You can accept the default address in square brackets or enter a new address.
5 .	Destination filename [cat2948g-in-mz]?	Enters the destination filename. You can accept the default filename in square brackets or enter a new filename.

Use the following commands to copy the system image from the TFTP server to a boot flash memory SIMM beginning in privileged EXEC mode.

Step	Command	Purpose
1 .	2948G-L3# dir bootflash:	Displays the contents of boot flash memory, including the names of the images that currently reside there.
2 .	2948G-L3# copy tftp: bootflash:	Copies a file from a TFTP server to boot flash memory.
3 .	Address or name of remote host []? 172.68.16.129	Enters the domain name or IP address of the TFTP server. You can accept the default address in square brackets or enter a new address.
4 .	Source filename []? boot/cat2948g-in-mz	Prompts you to enter the name of the system image.
5 .	Destination filename [cat2948g-in-mz]?	Enters the destination filename. You can accept the default filename in square brackets or enter a new filename.
6 .	Erase bootflash:before copying? [confirm] Erasing the bootflash filesystem will remove all files! Continue? [confirm]no Loading boot/cat2948g-in-mz from 171.69.1.129 (via FastEthernet1): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 3099840/6199296 bytes] Verifying checksum... OK (0x447E) 3099840 bytes copied in 42.144 secs (73805 bytes/sec)	Enters no to save existing images on boot flash.