Executing The Configuration File - HP 3100 v2 Series Configuration Manual

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If all the above operations fail, the device requests the default configuration file from the TFTP
server.
TFTP request sending mode
The device chooses whether to unicast or broadcast a TFTP request as follows:
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If a legitimate TFTP server IP address is contained in the DHCP response, the device unicasts
a TFTP request to the TFTP server.
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If not, the device resolves the TFTP server domain name contained in the DHCP response to
the corresponding IP address through the DNS server. If successful, the device unicasts a
TFTP request to the TFTP server; if not, the device broadcasts a TFTP request.
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If the IP address and the domain name of the TFTP server are not contained in the DHCP
response or they are illegitimate, the device broadcasts a TFTP request.
After broadcasting a TFTP request, the device selects the TFTP server that responds first to obtain
the configuration file. If the requested configuration file does not exist on the TFTP server, the
request operation fails, and the device removes the temporary configuration and starts up with the
factory defaults.
If the device and the TFTP server reside in different subnets, you must configure the UDP Helper
function for the gateway to change the broadcast TFTP request from the device to a unicast packet
and forward the unicast packet to the specified TFTP server. For more information about UDP Helper,
see Layer 3—IP Services Configuration Guide.

Executing the configuration file

After obtaining the configuration file, the device removes the temporary configuration and executes
the configuration file. If no configuration file is obtained, the device removes the temporary
configuration and starts up with the factory defaults.
The configuration file is deleted after executed. Save the configuration by using the save command.
Otherwise, the device has to perform automatic configuration again after reboot. For more
information about the save command, see Fundamentals
122
Command Reference.