R21xx-HP FlexFabric 11900 Fundamentals Configuration Guide

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• If not, the device starts the configuration file acquisition process by broadcasting a request. In this
case, the device resolves only the first reply.
As shown in Figure 51,
the device determines what to request from the TFTP server based on whether or
not it got a configuration file name during the automatic-configuration parameter acquisition process:
• If the device got a configuration file name, it requests the specified configuration file.
• If the device did not get a configuration file name but got a host name, it requests a configuration
file named in the format host name.cfg from the TFTP server, where host name represents the host
name of the device.
The reply received from the TFTP server might carry a host name (option 12). If the reply does not
carry a host name, the device requests the host name file network.cfg, which contains mappings
between IP addresses and host names. If the device fails to get the host name file or the file
contains no entry for the device's temporary IP address, it tries to communicate with a DNS server
to resolve the temporary IP address to a host name. After the device gets a host name, it tries to
obtain the configuration file for the host name.
If the device fails to get a configuration file specific for itself, it requests the default configuration file
device.cfg from the TFTP server.
Figure 51 Configuration file acquisition process