Administration: File Management
Auto Configuration via DHCP
54 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
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• If the information is available, the TFTP/SCP server is accessed to download
the file from it.
The download process is done only if the new configuration filename is
different from the current configuration filename (even if the current
configuration file is empty).
• A SYSLOG message is generated acknowledging that the Auto
Configuration process is completed.
Configuring DHCP Auto Configuration
Workflow
To configure DHCP Auto Configuration.
1. Configure the DHCPv4 and/or DHCPv6 servers to send the required options.
this process is not described in this guide.
2. Configure Auto Configuration parameters.
3. Define the device as a DHCPv4 client in the Defining an IPv4 Interface <300-
500>in Layer 2 System Mode or Defining IPv4 Interface in Layer 3 System
Mode <300-500> pages, and/or define the device as a DHCPv6 client in the
IPv6 Interface page.
Web Configuration
The DHCP Auto Configuration page is used to perform the following actions when
the information is not provided in a DHCP message:
• Enable the DHCP auto configuration feature.
• Specify the download protocol.
• Configure the device to receive configuration information from a specific file
on a specific server.
Note the following regarding the DHCP auto configuration process:
• A configuration file that is placed on the TFTP/SCP server must match the
form and format requirements of the supported configuration file. The form
and format of the file are checked, but the validity of the configuration
parameters is not checked prior to loading it to the Startup Configuration.
• In IPv4, to ensure that the device configuration functions as intended, due to
allocation of different IP addresses with each DHCP renew cycle, it is
recommended that IP addresses be bound to MAC addresses in the DHCP
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