Administrator Guide

DHCP and USB Auto-Configuration 501
files exist, the switch uses the dellswitch.text file. If only a *.stk file is present,
the switch checks the .stk file version and loads it into the backup image if the
version is later than the current active image. If multiple *.stk files are
present, the switch checks the image with the highest (most recent) version.
Finally, if no *.setup, *.text, or *.stk files are found, the switch proceeds to the
DHCP Auto Configuration process.
How Does USB Auto Configuration Use the Files on the USB Device?
The *.setup file can include the following information:
• MAC address of the switch (optional)
• IP address and netmask (mandatory)
• Config file (optional)
• Firmware Image file (optional)
MAC Address Lookup
The switch MAC address should be on the same line as the IP address and
configuration file and/or image file name to allow a specific switch (identified
by its MAC address) to be associated with a specific config file or image. The
IP address on the line is assigned as the switch management IP address.
IP Address Lookup
If the switch MAC address is not found within the .setup text file, the first
line that contains an IP address and no MAC address and is not marked in-use
will be used by the switch to assign the management IP address/netmask.
This method allows a group of IP addresses to be handed out without regard
to the specific switch identified by the MAC address. A switch will mark a line
as invalid if it is read and failed to properly parse if, for example, it contains an
invalid configuration, a duplicate IP address or an image file name that is not
available. Once a switch selects an IP address from the file, it adds its MAC
address to the line, marks the line as in-use, and updates the file on the USB
device.
If the *.setup file configuration line contains an IP address but no
configuration or image file names, the management IP address will be
assigned, and then the feature will search the USB device for files with the
.text and .stk extensions, which indicates that all switches will be using the
same configuration file and/or image on the USB device. This method allows