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Selecting the interfaces used for automatic configuration
For fast automatic device configuration, connect only the management Ethernet interface on each
device to the network.
Starting and completing automatic configuration
1. Power on the devices to be automatically configured.
If a device does not find a next-start configuration file locally, it starts the automatic
configuration process to obtain a configuration file. If one attempt fails, the device waits 30
seconds and then automatically starts the process again. To stop the process, press Ctrl+D.
After obtaining a configuration file, the device automatically executes the configuration file.
2. Use the save command to save the running configuration.
The device does not save the obtained configuration file locally. If you do not save the running
configuration, the device must use the automatic configuration feature again after a reboot.
For more information about the save command, see Fundamentals Command Reference.
Automatic configuration examples
Automatic configuration using TFTP server
Network requirements
As shown in Figure 51, two departments of a company are connected to the network through
gateways (Switch B and Switch C). Access devices Switch D, Switch E, Switch F, and Switch G do
not have a configuration file.
Configure the servers and gateways so the access devices can obtain a configuration file to
complete the following configuration tasks:
Enable administrators of access devices to Telnet to and manage their respective access
devices.
Require administrators to enter their respective usernames and passwords at login.
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