Cisco Systems OL-31386-01 specifications Configuring Dhcp Option 43 and Dhcp Option

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12Configuring DHCP Option 43 and DHCP Option 60

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 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.

The 2700 series access point uses 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 string for the 2700 series access point is:

Cisco AP c2700

Note If your access point was ordered with the Service Provider Option (AIR-OPT60-DHCP) selected in the ordering tool, the VCI string for the access point contains ServiceProvider. For example, a 2700 with this option will return this VCI string:

Cisco AP c2700-ServiceProvider

The format of the TLV block is listed below:

•Type: 0xf1 (decimal 241)

•Length: Number of controller IP addresses * 4

•Value: List of WLC management interfaces

To configure DHCP Option 43 in the embedded Cisco IOS DHCP server, follow these steps:

Step 1 Enter configuration mode at the Cisco IOS 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> default-router <Default router> dns-server <DNS Server>

Where:

<pool name> is the name of the DHCP pool, such as AP2702

<IP Network> is the network IP address where the controller resides, such as 10.0.15.1

<Netmask> is the subnet mask, such as 255.255.255.0

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Contents Cisco Aironet 2700 Series Access Points OL-31386-01 Last Updated March 31 About this Guide Introduction to the Access PointImportant Safety Instructions Safety Instructions20A. Statement Configurations UnpackingExternal Antennas Regulatory Domains Internal AntennasAccess Point Ports and Connections top-2702E Model Access Point Ports and ConnectorsAccess Point LED Indicator top-2702I Model 352657 Controller Discovery Process Configuring the Access PointPreparing the Access Point Performing a Pre-Installation Configuration Installation SummaryController Layer 3 devices Cisco Aironet access points Pre-Installation Configuration SetupPage Deploying the Access Point on the Wireless Network Mounting the Access PointGuidelines for Using Cisco Aironet Lightweight Access Points TroubleshootingChecking the Access Point LED Using Dhcp OptionLED Troubleshooting the Access Point Join Process Page For Home or Office USE Declarations of Conformity and Regulatory InformationPage Vcci Statement for Japan 03-6434-6500 Industry Canada Canadian Compliance Statement Statement 371-Power Cable and AC AdapterFrench Translation Access Point Models Page Page Generic Discussion on RF Exposure Declaration of Conformity for RF ExposureThis Device Meets FCC Guidelines for Exposure to Radio Waves MPE Additional Information on RF Exposure Chinese Translation English Translation Operation of Cisco Aironet Access Points in Brazil Portuguese Translation Declaration of Conformity StatementsConfiguring Dhcp Option 43 and Dhcp Option Add the option 60 line using the following syntax Access Point Specifications
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