382 Auto Image and Configuration Update
configuration file and extracts its hostname from the matching command. If
the default network configuration file does not contain the switch's IP
address, the switch attempts a reverse DNS lookup to resolve its hostname.
A sample dell-net.cfg file follows:
config
...
ip host switch1 192.168.1.10
ip host switch2 192.168.1.11
... <other hostname definitions>
exit
Once a hostname has been determined, the switch issues a TFTP request for
a file named hostname.cfg , where hostname is the first thirty-two
characters of the switch's hostname.
If the switch is unable to map its IP address to a hostname, Auto
Configuration sends TFTP requests for the default configuration file
host.cfg.
Table 14-1 summarizes the config files that may be downloaded and the order
in which they are sought.
Table 14-1. Configuration File Possibilities
Order
Sought
File Name Description Final File
Sought
1
bootfile.cfg
Host-specific config file, ending in a
*.cfg file extension
Yes
2
dell-net.cfg
Default network config file No
3
hostname.cfg
Host-specific config file, associated
with hostname.
Yes
4
host.cfg
Default config file Yes
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