Selecting A Configuration File - Cisco 2100 Series Configuration Manual

Using the AutoInstall Feature for Controllers Without a Configuration
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Note For more information on configuring DHCP on a controller, see the
page
For more information on configuring a TFTP server on a controller, see
Note
Note For more information on configuring DHCP and TFTP servers through WCS, see Chapter 10 of the
Cisco Wireless Control System Configuration Guide, Release 5.2.

Selecting a Configuration File

After the host name and TFTP server have been determined, AutoInstall attempts to download a
configuration file. AutoInstall performs three full download iterations on each interface that obtains a
DHCP IP address. For example, if a 4400 series controller obtains DHCP IP addresses on both eth0 and
dtl0, each interface tries to download a configuration. If the interface cannot download a configuration
file successfully after three attempts, the interface does not attempt further.
The first configuration file that is downloaded and installed successfully triggers a reboot of the
controller. After the reboot, the controller runs the newly downloaded configuration.
AutoInstall searches for configuration files in the order in which the names are listed:
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AutoInstall runs through this list until it finds a configuration file. It stops running if it does not find a
configuration file after it cycles through this list three times on each registered interface.
The downloaded configuration file can be a complete configuration, or it can be a minimal configuration
Note
that provides enough information for the controller to be managed by WCS. Full configuration can then
be deployed directly from WCS.
Cisco Wireless LAN Controller Configuration Guide
4-8
If the DHCP server IP address (siaddr) field is non-zero, this address is used as the IP address
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of the TFTP server.
– The limited broadcast address (255.255.255.255) is used as the IP address of the TFTP server.
If the TFTP server is not on the same subnet as the controller, a static route (/32) is installed for the
IP address of the TFTP server. This static route points to the gateway that is learned through the
DHCP Router option.
6-8.
The filename that is provided by the DHCP Boot File Name option
The filename that is provided by the DHCP File field
host name-confg
host name.cfg
base MAC address-confg (for example, 0011.2233.4455-confg)
serial number-confg
ciscowlc-confg
ciscowlc.cfg
Chapter 4 Configuring Controller SettingsWireless Device Access
"Configuring DHCP" section on
Chapter 9.
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