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Cisco Aironet 1000 Series Lightweight Access Point Hardware Installation Guide
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AppendixF Configuring DHCP Option 43
Overview
Overview
This section contains a DHCP Option 43 configuration example on a Windows 2003 Enterpr ise D HCP
server for use with Cisco Aironet lightweight access points. For other DHCP server imp lemen tati ons,
consult the DHCP server documentation for configuring DHCP Optio n 43. In Option 43, you should use
the IP address of the controller management interface.
Note DHCP Option 43 is limited to one access point type pe r DHC P po ol. You must configure a separate
DHCP pool for each access point type.
Cisco Aironet 1000 series access points use a comma-separated string format for DHCP Option 43.
Other Cisco Aironet access points use the type-length-value (TLV) format for DHCP Option 43. DHC P
servers must be programmed to return the option based on the access point’s DHCP Vendor Class
Identifier (VCI) string (DHCP Option 60). The VCI strings for Cisco acc ess points capable of operating
in lightweight mode are listed in Table F -1:
The format of the TLV block for 1100, 1130, 1200, 1240, and 1300 series access points is listed below:
•Type: 0xf1 (decimal 241)
•Length: Number of controller IP addresses * 4
•Value: List of WLC management interfaces
TableF-1 Lightweight Access Point VCI Strings
Access Point Vendor Class Identifier (VCI)
Cisco Aironet 1000 series Airespace.AP1200
Cisco Aironet 1100 series Cisco AP c1100
Cisco Aironet 1130 series Cisco AP c1130
Cisco Aironet 1200 series Cisco AP c1200
Cisco Aironet 1240 series Cisco AP c1240
Cisco Aironet 1300 series Cisco AP c1300
Cisco Aironet 1500 series Cisco AP.LAP1510