Provisioning from TFTP Server using DHCP Option 66
Provisioning the device from a third-party TFTP server is suitable when the network in which the device is deployed includes a provisioning TFTP server for all network equipment, without the capability of distinguishing between the device and other third-party devices.
Upon startup, the device checks for DHCP Option 66 in the DHCP response received from the DHCP server. If Option 66 contains a valid IP address (or FQDN) of the TFTP provisioning server, the device attempts to download through TFTP, a configuration file whose filename contains the device's MAC address (e.g., 00908f0130aa.ini).
This method uploads the configuration file to the device as a one-time action. The download is repeated only if the device is manually restored to factory defaults (by pressing the hardware reset button while the Ethernet cable is not connected).
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To configure the device for automatic provisioning through TFTP using DHCP Option 66: |
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1.
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In the IP Interfaces table, configure the IP Interface with the 'Interface Mode'
parameter set to IPv4 DHCP or IPv6 DHCP (depending on IP version). |
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2.
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Enable the device to include DHCP Option 66 in DHCP Option 55 (Parameter Request List) when requesting TFTP provisioning parameters from a DHCP server, using the following ini file parameter: |
DHCPRequestTFTPParams = 1
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3.
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Restart the device with a save-to-flash for your settings to take effect. |
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Access to the core network through TFTP is not NAT-safe. |
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The TFTP data block size (packets) when downloading a file from a TFTP server for the Automatic Update mechanism can be configured using the AUPDTftpBlockSize parameter. |