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Cisco Aironet 1000 Series Lightweight Access Point Hardware Installation Guide
OL-9403-04
Appendix F Configuring DHCP Option 43
Overview
Overview
This section contains a DHCP Option 43 configuration example on a Windows 2003 Enterprise DHCP
server for use with Cisco Aironet lightweight access points. For other DHCP server implementations,
consult the DHCP server documentation for configuring DHCP Option 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 per DHCP pool. 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. DHCP
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 access 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
Table F-1 Lightweight Access Point VCI Strings
Access Point Vendor Class Identifier (VCI)
Cisco Aironet 1000 series
Airespace.A P1200
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