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Cisco Systems 1240AG Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Lightweight Access Points

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Cisco Aironet 1240AG Series Access Point Hardware Installation Guide

OL-8371-05

AppendixG Configuring DHCP Option 43 for Lightweight Access Points

Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Lightweight Access Points

Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Lightweight Access Points

To configure DHCP Option 43 for Cisco Aironet 1100, 1130, 1200, 1240, and 1300 series lightweight

access points in the embedded Cisco IOS DHCP server, follow these steps:

Step1 Enter configuration mode at the Cisco IOS CLI.

Step2 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 AP1240

<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

<Default router> is the IP address of the default router, such as 10.0.0.1

<DNS Server> is the IP address of the DNS server, such as 10.0.10.2

Step3 Add the option 60 line using the following syntax:

option 60 ascii “VCI string”

For the VCI string, use the value from Tabl e G-1. The quotation marks must be included.

Step4 Add the option 43 line using the following syntax:

option 43 hex <hex string>

The hex string is assembled by concatenating the TLV values shown below:

Type + Length + Va l u e

Type is always f1(hex). Length is the number of controller management IP addresses times 4 in hex. Val u e

is the IP address of the controller listed sequentially in hex.

For example, suppose that there are two controllers with management interface IP addresses,

10.126.126.2 and 10.127.127.2. The type is f1(hex). The length is 2 * 4 = 8 = 08 (hex). The IP addresses

translate to 0a7e7e02 and 0a7f7f02. Assembling the string then yields f1080a7e7e020a7f7f02. The

resulting Cisco IOS command added to the DHCP scope is listed below:

option 43 hex f1080a7e7e020a7f7f02

Contents

Main Page CONTENTS Page Page Page Page Page Preface Audience Purpose Organization Conventions xi or loss of data. Related Publications Locating the Product Serial Number CAUTION Hot Surfaces Page Overview Product Terminology Autonomous Access Points Lightweight Access Points Guidelines for Using Cisco Aironet Lightweight Access Points Hardware Features Page Single or Dual-Radio Operation Antennas Supported Ethernet Port Console Port LEDs Power Sources UL 2043 Certification Anti-Theft Features Page Network Examples with Autonomous Access Points Root Access Point on a Wired LAN Repeater Unit that Extends Wireless Range Central Unit in an All-Wireless Network Bridge Network with Wireless Clients Point-to-Point Bridge Configuration Workgroup Bridge Network Network Example with Lightweight Access Points Page Installing the Access Point Safety Information FCC Safety Compliance Statement General Safety Guidelines Warnings Unpacking the Access Point Package Contents Basic Installation Guidelines Controller Discovery Process for Lightweight Access Points Deploying the Access Points on the Wireless Network Access Point Layout and Connectors Mounting Overview Page Mounting on a Horizontal or Vertical Surface Mounting Below a Suspended Ceiling Mounting Above a Suspended Ceiling Page Page Mounting Access Point on a Desktop or Shelf Cable Security Bracket Removing the Cable Security Bracket Attaching the Access Point to the Mounting Plate Securing the Access Point Using a Security Cable Securing the Access Point to the Mounting Plate Page 2-20 Cisco Aironet 1240AG Series Access Point Hardware Installation Guide OL-8371-05 Access Point Chapter2 Installing the Access Point Connecting the Ethernet and Power Cables Connecting the Ethernet and Power Cables Figure2-12 Access Point Power Options Statement 353 Option 1Switches with sufficient inline power: Other inline power switches supporting the IEEE 802.3af inline power standard Connecting to an Ethernet Network with an Inline Power Source Connecting to an Ethernet Network with Local Power Powering Up the Access Point Troubleshooting 1240AG Series Autonomous Checking the Autonomous Access Point LEDs Checking Basic Settings Default IP Address Behavior Enabling the Radio Interfaces SSID WEP Keys Security Settings Low Power Condition Intelligent Power Management Inline Power Status Messages Page Configuring Power Using the CLI Issuing the Cisco IOS Command Using the CLI Configuring the Access Point System Power Settings Using a Browser Page Running the Carrier Busy Test Running the Ping Test Resetting to the Default Configuration Using the MODE Button Using the Web Browser Interface Reloading the Access Point Image Using the MODE Button Web Browser Interface Browser HTTP Interface Browser TFTP Interface Obtaining the Access Point Image File Connecting to the Access Point Locally Obtaining the TFTP Server Software Troubleshooting 1240AG Series Lightweight Guidelines for Using Cisco Aironet Lightweight Access Points Using DHCP Option 43 Checking the Lightweight Access Point LEDs Page Low Power Condition for Lightweight Access Points Intelligent Power Management Configuring Power Using Controller CLI Commands Manually Configuring Controller Information Using the Access Point CLI Configuring Controller Information Clearing Manually Entered Controller Information Manually Resetting the Access Point to Defaults Returning the Lightweight Access Point to Autonomous Mode Using a Controller to Return the Access Point to Autonomous Mode Using the MODE Button to Return the Access Point to Autonomous Mode MODE Button Setting Obtaining the Autonomous Access Point Image File Connecting to the Access Point Locally Obtaining the TFTP Server Software A Translated Safety Warnings Page B Declarations of Conformity and Regulatory Information Manufacturers Federal Communication Commission Declaration of Conformity Statement Tested To Comply With FCC Standards FOR HOME OR OFFICE USE VCCI Statement for Japan Industry Canada Canadian Compliance Statement European Community, Switzerland, Norway, Iceland, and Liechtenstein Declaration of Conformity with Regard to the 1999/5/EC (R&TTE Directive) Page Page Declaration of Conformity for RF Exposure Guidelines for Operating Cisco Aironet Access Points in Japan Japanese Translation 03-6434-6500 Administrative Rules for Cisco Aironet Access Points in Taiwan Access Points with IEEE 802.11a Radios All Access Points Chinese Translation Operation of Cisco Aironet Access Points in Brazil Access Point Models Regulatory Information Portuguese Translation Page DECLARATION OF CONFORMITY with regard to the R&TTE Directive 1999/5/EC Signature: Tony Youssef Director Corporate Compliance Annex to DofC# 456136rev1 Information on Antennas and Power Levels C Access Point Specifications Page Page Page D Channels and Maximum Power Levels Page E Console Cable Pinouts Overview Console Port Signals and Pinouts F Priming Lightweight Access Points Prior to Deployment Page Page Page G Configuring DHCP Option 43 for Lightweight Overview Configuring Option 43 for 1000 Series Access Points Configuring Option 43 for 1100, 1130, 1200, 1240, and 1300 Series Lightweight Access Points GLOSSARY A B C D E F G I L M O P Q R Page U W Page INDEX A B C P R S T