Overview; Configuring Option 43 For 1000 Series Access Points - Cisco AIR-AP1251AG-A-k9 Hardware Installation Manual

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 their product 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 and 1500 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 G-1
Access Point
Cisco Aironet 1000 series
Cisco Aironet 1100 series
Cisco Aironet 1130 series
Cisco Aironet 1200 series
Cisco Aironet 1240 series
Cisco Aironet 1250 series
Cisco Aironet 1300 series
Cisco Aironet 1500 series
The format of the TLV block for 1100, 1130, 1200, 1240, 1250, and 1300 series access points is listed
below:
•
•
•

Configuring Option 43 for 1000 Series Access Points

To configure DHCP Option 43 for Cisco 1000 series lightweight access points in the embedded Cisco
IOS DHCP server, follow these steps:
Step 1 Enter configuration mode at the Cisco IOS command line interface (CLI).
Step 2 Create the DHCP pool, including the necessary parameters such as default router and name server. A
DHCP scope example is as follows:
ip dhcp pool <pool name>
network <IP Network> <Netmask>
Cisco Aironet 1250 Series Access Point Hardware Installation Guide
G-2
C I S C O C O N F I D E N T I A L - D r a f t A 1
Lightweight Access Point VCI Strings
Type: 0xf1 (decimal 241)
Length: Number of controller IP addresses * 4
Value: List of WLC management interfaces
Appendix G Configuring DHCP Option 43 for Lightweight Access Points
Table G-1:
Vendor Class Identifier (VCI)
A i r es pace. A P1200
Ci s co A P c1100
Ci s co A P c1130
Ci s co A P c1200
Ci s co A P c1240
Ci s co A P c1250
Ci s co A P c1300
Ci s co A P. LA P1510 or Ci s co A P. LA P1505
OL-8247-02