Cisco 1142 - Aironet Standalone AP Bedienungsanleitung

GETTING STARTED GUIDE

Cisco Aironet 1140 Series Lightweight Access Point

1About this Guide

2Safety Instructions

3Unpacking

4Overview

5Configuring the Access Point

6Mounting the Access Point

7Deploying the Access Point on the Wireless Network

8Troubleshooting

9Declarations of Conformity and Regulatory Information

10 Configuring DHCP Option 43 and DHCP Option 60

11 Access Point Specifications

Revised December 2010 P/N 78-18848-03

1 About this Guide

This Guide provides instructions on how to install and configure your Cisco Aironet 1140 Series

Access Point. This guide also provides mounting instructions and limited troubleshooting procedures.

2 Safety Instructions

Translated versions of the following safety warnings are provided in the translated safety warnings

document that is shipped with your access point. The translated warnings are also in the Translated

Safety Warnings for Cisco Aironet Access Points, which is available on your documentation CD and

cisco.com.

Warning

IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury.

Before you work on any equipment, be aware of the hazards involved with electrical

circuitry and be familiar with standard practices for preventing accidents. Use the

statement number provided at the end of each warning to locate its translation in the

translated safety warnings that accompanied this device.

Statement 1071

SAVE THESE INSTRUCTIONS

Warning

Read the installation instructions before you connect the system to its power source.

Statement 1004

Warning

This product must be connected to a Power-over-Ethernet (PoE) IEEE 802.3af compliant

power source or an IEC60950 compliant limited power source.

Statement 353

Warning

Installation of the equipment must comply with local and national electrical codes.

Statement 1074

Warning

This product relies on the building’s installation for short-circuit (overcurrent)

protection. Ensure that the protective device is rated not greater than:

20A.

Statement 1005

Warning

Do not operate your wireless network device near unshielded blasting caps or in an

explosive environment unless the device has been modified to be especially qualified for

such use.

Statement 245B

Warning

In order to comply with FCC radio frequency (RF) exposure limits, antennas should be

located at a minimum of 7.9 inches (20 cm) or more from the body of all persons.

Statement 332

Caution When mounting the access point to a wall or ceiling, be sure to use appropriate fasteners.

The fasteners used must be capable of maintaining a minimum pullout force of 20 lbs (9

kg) and must use all 4 indented holes on the low-profile mounting bracket.

Caution This product and all interconnected equipment must be installed indoors within the same

building, including the associated LAN connections as defined by Environment A of the

IEEE 802.af Standard.

Note The access point is suitable for use in environmental air space in accordance with section

300.22.C of the National Electrical Code and sections 2-128, 12-010(3), and 12-100 of the

Canadian Electrical Code, Part 1, C22.1. You should not install the power supply or power

injector in air handling spaces.

Note Use only with listed ITE equipment.

3 Unpacking

Follow these steps:

Step 1 Unpack and remove the access point and the accessory kit from the shipping box.

Step 2 Return any packing material to the shipping container and save it for future use.

Step 3 Verify that you have received the items shown in Figure 1. If any item is missing or damaged,

contact your Cisco representative or reseller for instructions.

Figure 1 Shipping Box Contents

1Standard ceiling adjustable T-rail clip 31140 series access point

2Mounting bracket 46-32 x 1/4 in. (0.63 cm) flat head screws

207439

4 Overview

The following illustrations show the access point connections and features.

Figure 2 Access Point Ports and Connections

1Kensington lock slot 4Console port

2Power connection 5Security padlock and hasp

3Ethernet port 6Low-profile mounting bracket pins (feet for

desk or table-top mount)

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2 3 4

1 5

6 6

5 Configuring the Access Point

This section describes how to connect the access point to a wireless LAN controller. Because the

configuration process takes place on the controller, see the Cisco Wireless LAN Controller

Configuration Guide for additional information. This guide is available on cisco.com.

The Controller Discovery Process

The 1140 series access point uses the IETF standard Control and Provisioning of Wireless Access

Points Protocol (CAPWAP) to communicate between the controller and other wireless access points on

the network. CAPWAP is a standard, interoperable protocol which enables an access controller to

manage a collection of wireless termination points. The discovery process using CAPWAP is identical

to the Lightweight Access Point Protocol (LWAPP) used with previous Cisco Aironet access points.

LWAPP-enabled access points are compatible with CAPWAP and conversion to a CAPWAP controller

is seamless. Deployments can combine CAPWAP and LWAPP software on the controllers.

The functionality provided by the controller does not change except for customers who have Layer 2

deployments, which CAPWAP does not support.

In a CAPWAP environment, a wireless access point discovers a controller by using CAPWAP discovery

mechanisms and then sends it a CAPWAP join request. The controller sends the access point a

CAPWAP join response allowing the access point to join the controller. When the access point joins

the controller, the controller manages its configuration, firmware, control transactions, and data

transactions.

Note For additional information about the discovery process and CAPWAP, see the Cisco Wireless

LAN Controller Software Configuration Guide. This document is available on cisco.com.

Note CAPWAP support is provided in controller software release 5.2 or later. Your controller must

be running release 5.2 or later.

Note You cannot edit or query any access point using the controller CLI if the name of the access

point contains a space.

Note Make sure that the controller is set to the current time. If the controller is set to a time that

has already occurred, the access point might not join the controller because its certificate may

not be valid for that time.

Access points must be discovered by a controller before they can become an active part of the network.

The 1140 series access point supports these controller discovery processes:

•Layer 3 CAPWAP discovery—Can occur on different subnets than the access point and uses IP

addresses and UDP packets rather than MAC addresses used by Layer 2 discovery.

•Over-the-air provisioning (OTAP)—This feature is supported by Cisco 4400 series controllers. If

this feature is enabled on the controller, all joined access points transmit wireless CAPWAP

neighbor messages, and new access points receive the controller IP address from these messages.

This feature is disabled by default and should remain disabled when all access points are installed.

Additional information about OTAP is available on cisco.com at the following link:

http://www.ciscosystems.com/en/US/products/ps6366/products_tech_note09186a008093d74a.shtml

•Locally stored controller IP address discovery—If the access point was previously joined to a

controller, the IP addresses of the primary, secondary, and tertiary controllers are stored in the

access point’s non-volatile memory. This process of storing controller IP addresses on an access

point for later deployment is called priming the access point. For more information about priming,

see the “Performing a Pre-Installation Configuration” section on page 8.

•DHCP server discovery—This feature uses DHCP option 43 to provide controller IP addresses to

the access points. Cisco switches support a DHCP server option that is typically used for this

capability. For more information about DHCP option 43, see the “Configuring DHCP Option 43

and DHCP Option 60” section on page 31.

•DNS discovery—The access point can discover controllers through your domain name server

(DNS). For the access point to do so, you must configure your DNS to return controller IP

addresses in response to CISCO-LWAPP-CONTROLLER.localdomain, where localdomain is the

access point domain name. Configuring the CISCO-LWAPP-CONTROLLER provides backwards

compatibility in an existing customer deployment. When an access point receives an IP address

and DNS information from a DHCP server, it contacts the DNS to resolve

CISCO-LWAPP-CONTROLLER.localdomain. When the DNS sends a list of controller IP

addresses, the access point sends discovery requests to the controllers.

Preparing the Access Point

Before you mount and deploy your access point, we recommend that you perform a site survey (or use

the site planning tool) to determine the best location to install your access point.

You should have the following information about your wireless network available:

•Access point locations.

•Access point mounting options: below a suspended ceiling, on a flat horizontal surface, or on a

desktop.

Note You can mount the access point above a suspended ceiling but you must purchase

additional mounting hardware: See “Mounting the Access Point” section on page 12 for

additional information.

•Access point power options: power supplied by a DC power supply, PoE from a network device,

or a PoE power injector/hub (usually located in a wiring closet).

Note Access points mounted in a building’s environmental airspace must be powered using PoE

to comply with safety regulations.

Cisco recommends that you make a site map showing access point locations so that you can record the

device MAC addresses from each location and return them to the person who is planning or managing

your wireless network.

Installation Summary

Installing the access point involves these operations:

•Performing a pre-installation configuration (optional)

•Mounting the access point

•Grounding the access point

•Deploying the access point on the wireless network

Performing a Pre-Installation Configuration

The following procedures ensure that your access point installation and initial operation go as

expected. A pre-installation configuration is also known as priming the access point. This procedure

is optional.

Note Performing a pre-installation configuration is an optional procedure. If your network

controller is properly configured, you can install your access point in its final location and

connect it to the network from there. See the “Deploying the Access Point on the Wireless

Network” section on page 12 for details.

Pre-Installation Configuration Setup

Figure 3 shows the pre-installation configuration setup.

Figure 3 Pre-Installation Configuration Setup

Follow these steps to perform the pre-installation configuration.

Step 1 Make sure that the Cisco wireless LAN controller DS port is connected to the network. Use

the CLI, web-browser interface, or Cisco WCS procedures as described in the appropriate

Cisco wireless LAN controller guide.

a. Make sure that access points have Layer 3 connectivity to the Cisco wireless LAN controller

Management and AP-Manager Interface.

b. Configure the switch to which your access point is to attach. See the Cisco Unified Wireless

Network WLAN Controller Guide: Cisco 440x Series WLAN Controllers for additional

information.

c. Set the Cisco wireless LAN controller as the master so that new access points always join with

it.

d. Make sure DHCP is enabled on the network. The access point must receive its IP address

through DHCP.

Controller

Layer 3

devices

Cisco Aironet

access points

272488

e. CAPWAP UDP ports must not be blocked in the network.

f. The access point must be able to find the IP address of the controller. This can be

accomplished using DHCP, DNS, or IP subnet broadcast. This guide describes the DHCP

method to convey the controller IP address. For other methods, refer to the product

documentation. See also the “Using DHCP Option 43” section on page 14 for more

information.

Step 2 Apply power to the access point:

a. The access point is 802.3af (15.4 W) compliant and can be powered by any of the following

802.3af compliant devices:

–

2106 controller

–

WS-C3550, WS-C3560, and WS-C3750 switches

–

C1880 switch

–

2600, 2610, 2611, 2621, 2650, and 2651 multiservice platforms

–

2610XM, 2611XM, 2621XM, 2650XM, 2651XM, and 2691 multiservice platforms

–

2811, 2821, and 2851 integrated services routers

–

3620, 3631-telco, 3640, and 3660 multiservice platforms

–

3725 and 3745 multiservice access routers

–

3825 and 3845 integrated services routers

The access point can also be powered by any of the following optional external power

sources:

–

Any 802.3af compliant power injector

Note The 1140 series access point requires a Gigibit Ethernet link to prevent the Ethernet

port from becoming a bottleneck for traffic because wireless traffic speeds exceed

transmit speeds of a 10/100 Ethernet port.

–

1250 series access point power injector (AIR-PWRINJ4)

–

1100/1200 series access point DC power supply (AIR-PWR-SPLY)

b. As the access point attempts to connect to the controller, the LEDs cycle through a green, red,

and amber sequence, which can take up to 5 minutes.

Note If the access point remains in this mode for more than five minutes, the access point is

unable to find the Master Cisco wireless LAN controller. Check the connection between

the access point and the Cisco wireless LAN controller and be sure that they are on the

same subnet.

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