Administrator Guide

DHCP and USB Auto-Configuration 555
Monitoring and Completing the DHCP Auto Configuration Process
When the switch boots and triggers an Auto Configuration, a message
displays on the console screen to indicate that the process is starting. After
the process completes, the Auto Configuration process writes a log message.
When Auto Configuration has successfully completed, the show running-
config command can be used to validate the contents of configuration.
Saving a Configuration
The Auto Configuration feature includes an AutoSave capability that allows
the downloaded configuration to be automatically saved; however, AutoSave
is disabled by default. If AutoSave has not been enabled, you must explicitly
save the downloaded configuration in nonvolatile memory on the stack
master. This makes the configuration available for the next reboot. In the
CLI, this is performed by issuing a write command or copy running-config
startup-config command and should be done after validating the contents of
saved configuration.
If the downloaded configuration is not saved to the startup-config, the
configuration will be reloaded by the switch every time the DHCP lease
expires.
Stopping and Restarting the Auto Configuration Process
The Auto Configuration process can be terminated at any time before the
image or configuration file is downloaded. This is useful when the switch is
disconnected from the network. Termination of the Auto Configuration
process ends further periodic requests for a host-specific configuration file.
The Auto Configuration process automatically starts after a reboot if the
startup-config file is not found on the switch. The configuration file will not
be found if it has never been saved on the switch, or if you issue a command
to erase the configuration file (erase startup-config).
Managing Downloaded Config Files
The configuration files downloaded by Auto Configuration are stored in the
nonvolatile memory as .scr files. The files may be managed (viewed or
deleted) along with files downloaded by the configuration scripting utility.