C I S C O C O N F I D E N T I A L - D r a f t A 1
G-2
Cisco Aironet 1250 Series Access Point Hardware Installation Guide
OL-8247-02
Appendix G Configuring DHCP Option 43 for Lightweight Access Points
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
:
The format of the TLV block for 1100, 1130, 1200, 1240, 1250, 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
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
>
Table G-1
Lightweight Access Point VCI Strings
Access Point
Vendor Class Identifier (VCI)
Cisco Aironet 1000 series
A irespace.A P1200
Cisco Aironet 1100 series
Cisco A P c1100
Cisco Aironet 1130 series
Cisco A P c1130
Cisco Aironet 1200 series
Cisco A P c1200
Cisco Aironet 1240 series
Cisco A P c1240
Cisco Aironet 1250 series
Cisco A P c1250
Cisco Aironet 1300 series
Cisco A P c1300
Cisco Aironet 1500 series
Cisco A P.LA P1510 or Cisco A P.LA P1505