Dell PowerConnect M6348 Configuration Manual page 155

A file is not automatically deleted after it is downloaded. The file does not take effect upon a reboot
unless an administrator opts to save config (the saved configuration takes effect upon reboot). If the user
does not opt to save config, the Auto Config process occurs again on a subsequent reboot. This may
result in one of the previously downloaded files being overwritten.
Restarting the Auto Config Process
The Auto Config process is automatically started on a subsequent reboot if the configuration file is not
found on the switch. This can occur if configuration has not been saved on the switch, or after the
administrator issues a command to erase the configuration file.
During a session, the Auto Config process may be restarted (if the administrator has previously stopped
the Auto Config process). This action re-initiates the process for this login session only. It is
recommended that this action be performed only when the administrator is certain that configuration is
clear in order to have predictable results.
Reinitialization of the switch (after a clear config) automatically activates the Auto Config process if
there is no configuration file stored on the switch.
Switch Configuration Considerations
BOOTP or DHCP must be enabled on the switch in order for the Auto Config procedure to operate.
DHCP is enabled on the out-of-band interface by default.
Network Configuration Considerations
Specifying a Default Router
Some network configurations require the specification of a default gateway through which some IP
communication can occur. The default gateway is specified by Option 3 of a BOOTP or DHCP response.
Dependency Upon Other Network Services
The Auto Config process depends upon the following network services:
• A DHCP or BOOTP server must be configured on the network with appropriate services.
• A configuration file for the switch must be available from a TFTP server on the network.
• The switch must be connected to the network.
• A DNS server must contain an IP address to hostname mapping for the TFTP server if the DHCP
server response contains only the hostname for the TFTP server.
• A DNS server must contain an IP address to hostname mapping for the switch if a <hostname>.cfg
file is to be downloaded.
• If a default gateway is needed to forward TFTP requests, IP helper addresses will need to be configured
on the gateway to provide those services.
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Utility