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Performing Switch Setup Configuration
How to Perform Switch Setup Configuration
If you modify your configuration file, the switch prompts you to save the configuration before reloading. During the save
operation, the system requests whether you want to proceed with the save if the CONFIG_FILE environment variable
points to a startup configuration file that no longer exists. If you proceed in this situation, the system enters setup mode
upon reload.
To cancel a previously scheduled reload, use the reload cancel privileged EXEC command.
How to Perform Switch Setup Configuration
Using DHCP to download a new image and a new configuration to a switch requires that you configure at least two
switches. One switch acts as a DHCP and TFTP server and the second switch (client) is configured to download either
a new configuration file or a new configuration file and a new image file.
Configuring DHCP Autoconfiguration (Only Configuration File)
This task describes how to configure DHCP autoconfiguration of the TFTP and DHCP settings on a new switch to
download a new configuration file.
Configuring DHCP Auto-Image Update (Configuration File and Image)
This task describes DHCP autoconfiguration to configure TFTP and DHCP settings on a new switch to download a new
image and a new configuration file.
Command Purpose
1. configure terminal Enters global configuration mode.
2. ip dhcp poolname Creates a name for the DHCP Server address pool, and enters DHCP
pool configuration mode.
3. bootfile filename Specifies the name of the configuration file that is used as a boot
image.
4. network network-number mask
prefix-length
Specifies the subnet network number and mask of the DHCP address
pool.
Note: The prefix length specifies the number of bits that comprise the
address prefix. The prefix is an alternative way of specifying the
network mask of the client. The prefix length must be preceded by a
forward slash (/).
5. default-router address Specifies the IP address of the default router for a DHCP client.
6. option 150 address Specifies the IP address of the TFTP server.
7. exit Returns to global configuration mode.
8. tftp-server flash:filename.text Specifies the configuration file on the TFTP server.
9. interface interface-id Specifies the address of the client that will receive the configuration
file.
10. no switchport Puts the interface into Layer 3 mode.
11. ip address address mask Specifies the IP address and mask for the interface.
12. end Returns to privileged EXEC mode.
13. copy running-config startup-config (Optional) Saves your entries in the configuration file.
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