Cisco Systems 3560 Manual De Usuario

The configuration file that is downloaded from TFTP is merged with the existing configuration in the 
running configuration but is not saved in the NVRAM unless you enter the write memory or 
copy running-configuration startup-configuration privileged EXEC command. Note that if the 
downloaded configuration is saved to the startup configuration, the feature is not triggered during 
subsequent system restarts.

These sections contain this configuration information:

If your DHCP server is a Cisco device, for additional information about configuring DHCP, see the 
“Configuring DHCP” section of the “IP Addressing and Services” section of the Cisco IOS IP 
Configuration Guide from the Cisco.com page under Documentation > Cisco IOS Software > 12.2 
Mainline > Configuration Guides. 

Follow these guidelines if you are configuring a device as a DHCP server:

You should configure the DHCP server with reserved leases that are bound to each switch by the switch 
hardware address.

If you want the switch to receive IP address information, you must configure the DHCP server with these 
lease options:

IP address of the client (required)

Subnet mask of the client (required)

Router IP address (default gateway address to be used by the switch) (required)

DNS server IP address (optional)

If you want the switch to receive the configuration file from a TFTP server, you must configure the 
DHCP server with these lease options:

TFTP server name (required)

Boot filename (the name of the configuration file that the client needs) (recommended)

Hostname (optional)

Depending on the settings of the DHCP server, the switch can receive IP address information, the 
configuration file, or both.