7-22
Cisco Wireless LAN Controller Configuration Guide
OL-9141-03
Chapter 7 Controlling Lightweight Access Points
Autonomous Access Points Converted to Lightweight Mode
Using DHCP Option 43
Cisco 1000 series access points use a string format for DHCP option 43, whereas Cisco Aironet access
points use the type-length-value (TLV) format for DHCP option 43. DHCP servers must be programmed
to return the option based on the access point’s DHCP Vendor Class Identifier (VCI) string (DHCP
Option 60).
Table 7-1
lists the VCI strings for Cisco access points capable of operating in lightweight
mode.
This is the format of the TLV block:
•
Type: 0xf1 (decimal 241)
•
Length: Number of controller IP addresses * 4
•
Value: List of the IP addresses of controller management interfaces
Refer to the product documentation for your DHCP server for instructions on configuring DHCP option
43. The
Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode
document contains
example steps for configuring option 43 on a DHCP server.
Using a Controller to Send Debug Commands to Access Points Converted to
Lightweight Mode
Enter this command to enable the controller to send debug commands to an access point converted to
lightweight mode:
config ap remote-debug
[
enable
|
disable
|
exc-command
]
Cisco_AP
When this feature is enabled, the controller sends debug commands to the converted access point as
character strings. You can send any debug command supported by Cisco Aironet access points that run
Cisco IOS software in lightweight mode.
Converted Access Points Send Crash Information to Controller
When a converted access point unexpectedly reboots, the access point stores a crash file on its local flash
memory at the time of crash. After the unit reboots, it sends the reason for the reboot to the controller.
If the unit rebooted because of a crash, the controller pulls up the crash file using existing LWAPP
messages and stores it in the controller flash memory. The crash info copy is removed from the access
point flash memory when the controller pulls it from the access point.
Table 7-1
VCI Strings For Lightweight Access Points
Access Point
VCI String
Cisco 1000 Series
Airespace 1200
Cisco Aironet 1130 Series
Cisco AP c1130
Cisco Aironet 1200 Series
Cisco AP c1200
Cisco Aironet 1240 Series
Cisco AP c1240
