Cisco Systems AIRCAP1552EAK9RF manual Overview, Access Point, Vendor Class Identifier VCI

Appendix F Configuring DHCP Option 43

Overview

Overview

This section contains a DHCP Option 43 configuration example on a DHCP server for use with Cisco Aironet Access Points. For other DHCP server implementations, consult DHCP server product documentation for configuring DHCP Option 43. In Option 43, 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, 1500, and 1552 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 DHCP Vendor Class Identifier (VCI) string (DHCP Option 60). The VCI strings for Cisco access points that can operate in lightweight mode are listed in Table F-1.

Table F-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 1250 series		Cisco AP c1250
Cisco Aironet 1300 series		Cisco AP c1300
Cisco Aironet 1500 series		Cisco AP c15001
		Cisco AP.OAP15002, Cisco AP.LAP15102, or
		Cisco AP.LAP15052
		Airespace.AP12003
Cisco Aironet 1520 series		Cisco AP c1520
Cisco Aironet 1550 series		Cisco AP c1550

1.For controller release 4.1 or later.

2.For controller release 4.0, the VCI depends on the model.

3.For controller release 3.2.

The following is the format of the TLV block for 1100, 1130, 1200, 1240, 1250, 1300, 1520, and 1552 access points:

•Type: 0xf1 (decimal 241)

•Length: Number of controller IP addresses * 4

•Value: List of WLC management interfaces

Cisco Aironet 1550 Series Outdoor Mesh Access Point Hardware Installation Guide

F-2 OL-24247-01