HP ProCurve 420 User manual

HP ProCurve
Wireless Access Point 420
Installation and Getting Started Guide

©Copyright 2003 Hewlett-Packard Development Company,
L.P.The information contained herein is subject to change
without notice.
This document contains proprietary information, which is
protected by copyright. No part of this document may be
photocopied, reproduced, or translated into another language
without the prior writtenconsent of Hewlett-Packard.
Publication Number
5990-6005
September 2003
Edition 1
Applicable Products
HP ProCurve Wireless Access Point 420 na (J8130A)
HP ProCurve Wireless Access Point 420 ww (J8131A)
Disclaimer
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY
OF ANY KIND WITH REGARD TO THIS MATERIAL,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.Hewlett-Packard shall not be
liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use
of this material.
The only warranties for HP products and services are setforth in
the express warranty statements accompanying such products and
services. Nothing herein should be construed as constituting an
additional warranty. HP shall not beliable for technical or editorial
errors or omissions contained herein.
Hewlett-Packard assumes no responsibility for the use or
reliability of its software on equipment that is not furnished by
Hewlett-Packard.
Warranty
See the Customer Support/Warranty booklet included with the
product.
Acopy of the specific warranty terms applicable to your Hewlett-
Packard products and replacement parts can be obtained from your
HP Salesand Service Office or authorized dealer.
Safety
Before installing and operating these products, please read the
“Installation Precautions” in chapter 2, “Installing the Access
Point 420”, and the safetystatements in appendix C, “Safety and
Regulatory Statements”.
Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5552
Roseville, California95747-5552
http://www.hp.com/go/hpprocurve

Contents
1 Introducing the HPProCurve Wireless Access Point 420
Top oftheAccessPoint .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
LEDs .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Back of the Access Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Console Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Network Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Access Point Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2 Installing the Access Point 420
Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installation Procedures .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2. Verify the Access Point Passes the Self Test . . . . . . . . . . . . . . . . . . . 2-5
LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
3. Mount the Access Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Wall Mounting .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
4. Connect the Access Point to a Power Source . . . . . . . . . . . . . . . . . . 2-9
5. Connect the Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
6. Position theAntennas onthe Access Point .. . . . . . . . . . . . . . . . . . 2-10
7. (Optional) Connect a Console to the Access Point 420 . . . . . . . . . 2-11
Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
i

Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Ad Hoc Wireless LAN (no access point) . . . . . . . . . . . . . . . . . . . . . . . 2-14
Infrastructure Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Infrastructure Wireless LAN for Roaming Wireless PCs . . . . . . . . . . 2-16
3 Getting Started WithAccess Point Configuration
Recommended Minimal Configuration .. . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using the Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Where toGo From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Using the IP Address for Remote Access Point Management . . . . . 3-8
Starting a Telnet Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Starting a Web Browser Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
4 Troubleshooting
Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Hardware DiagnosticTests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Testingthe Access Point by ResettingIt . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Checkingthe Access Point’s LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
CheckingEvent Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
TestingTwisted-Pair Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
TestingAccess Point-to-Device Network Communications . . . . . . . . 4-7
TestingEnd-to-End Network Communications . . . . . . . . . . . . . . . . . . 4-7
Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . . 4-8
Downloading New Access Point Software .. . . . . . . . . . . . . . . . . . . . . . 4-9
HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
ii

A Specifications
Physical .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
EMC Compliance (Class B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Radio Signal Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Wireless .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Receiver Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
B Access Point Port and Network Cables
Access PointPorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Twisted-Pair Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . B-2
Straight-Through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . B-3
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Pin Assignments .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . . B-4
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Pin Assignments .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
C Safety and EMC Regulatory Statements
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1
iii

iv

1
Introducing the HP ProCurve
Wireless Access Point 420
The HP ProCurve Wireless Access Point 420 is a wireless repeaterthat seam-
lessly integrates with existing wired networks tosupport connectivity for
mobile users or wireless workstations. Thissolution offers fast, reliable
wireless connectivity with considerable cost savings over wired LANs. Just
install enough wireless access points to cover your network area, plug wire-
less cards into your notebooks or install wireless adapters into your desktops,
and start networking.
Wireless Access Point 420
IntroducingtheHP ProCurve
hp procurve
wireless
access point
420
Link/Ac
tivity
Wireless
10/100-TX
Power
HP ProCurve Wireless Access Point 420 na (J8130A)
HP ProCurve Wireless Access Point 420 ww(J8131A)
1-1

Introducing the HP ProCurve
Wireless Access Point 420
Introducing the HP ProCurve Wireless Access Point 420
Throughout this manual, this access point will be abbreviated as the
Access Point 420.
The Access Point 420 has one 10/100Base-TX RJ-45 port. This port also
supports Power over Ethernet (PoE) based on the IEEE 802.3afstandard. The
access point supports wireless connectivity at speeds up to 54 Mbps based on
the IEEE 802.11g standard.
This access point is designed to be used primarily for connecting wireless
clients to an enterprise network. This access point allows wireless clients to
connect directly to each other, or to connect to other computers or network
resources located on the wired network.
This chapter describes your HP Access Point 420 including:
 Top and back of the access point
 Access point features
1-2

Introducing the HP ProCurve Wireless Access Point 420
Top of the Access Point
Top of the Access Point
HP ProCurve Wireless Access Point 420
Wireless Access Point 420
IntroducingtheHP ProCurve
hp procurve
wireless
access point
420
Link/Activity
Wireless
10/100-TX
Power
Power,
10/100-TXLink,
and Wireless
Link LEDs
Antennas
Indicator Panel
hp procurve
wireless
access point
420
Link/Activity
Wireless
10/100-TX
Power
Power LED Ethernet LED Wireless LED
1-3

Introducing the HP ProCurve Wireless Access Point 420
Top of the Access Point
LEDs
Table 1-1. Access Point LEDs
Introducing the HP ProCurve
Wireless Access Point 420
Access Point
LEDs
State Meaning
Power
(green)
On
Off
Blinking*
Blinking*
(prolonged)
The access point is receiving power.
The access point is NOT receiving power.
The access point is undergoing self test or downloading software.
The selftest and initialization are in progress after you have power cycled or reset
the access point. The access point is not operational until this LED stops blinking.
A component of the access point has failed its self test.
10/100-TX On (green)
On (amber)
Off
Blinking*
The RJ-45 port is enabled and receiving a link indication from a 100 Mbps device.
The RJ-45 port is enabled and receiving a link indication from a 10 Mbps device.
The RJ-45 port has no active network cable connected, or is not receiving a signal.
Otherwise, the port may have been disabled through the access point console, or the
web browser interface.
The RJ-45 port is transmitting or receiving traffic.
Wireless On
Off
Blinking*
The wireless interface is enabled and receiving a link indication from a wireless client
The wireless interface isnot receiving a signal. Otherwise, the wireless interface may
have been disabled through the access point console, or the web browser interface.
The wireless interface is transmittingor receiving traffic.
* The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
1-4

Introducing the HP ProCurve Wireless Access Point 420
Back of the Access Point
Back of the Access Point
Wireless Access Point 420
IntroducingtheHP ProCurve
HP ProCurve Wireless Access Point 420
Reset button
Antennas
Network port
10/100Base-TX RJ-45
port and PoE input
DC power connector
Console port
Lock
Antennas
The access point includes two antennas for wireless communications. The
outbound signal transmitted from both antennas is identical, but only the best
inbound signal received on one of the antennas isused. The antennas transmit
the outgoing signal as a toroidal sphere, so the antennas should be adjusted
to different angles to provide better coverage. For further information, see
“Position the Antennas on the Access Point” on page 2-10 .
Lock
The access point includes a Kensington security slot on the rear panel, marked
with the lock symbol ( ). You can prevent unauthorized removal of the
access pointby wrapping the Kensington securitycable (notprovided) around
an unmovableobject, inserting the lock into the slot, and turning the key.
1-5

Introducing the HP ProCurve
Wireless Access Point 420
Introducing the HP ProCurve Wireless Access Point 420
Back of the Access Point
Console Port
This port connects a console to the access point using a serial cable. This
connection is described under “Connect a Console to the Access Point” in
chapter 2, “Installing the Access Point 420”. Theconsole can be a PC or
workstation running a VT-100 terminal emulator, ora VT-100 terminal.
Network Port
The access point includes one 10/100Base-TXport. This port uses MDI
(i.e., internal straight-through) pin configuration. You can therefore use
straight-through twisted-pair cable to connect this port to most network
interconnection devices such as a switch or router that provide MDI-X ports.
However, if you need to connect the access point to a workstation or other
device that only has MDI ports, then use crossover twisted-pair cable.
Ports on most HP switches have the “HP Auto MDIX” feature, which means
that you can use either straight-through or crossover twisted-pair cables to
connect the access point tothese switches.
Refer to the following section for information on supplying power to the
access point through its RJ-45 port from a network device, such as a switch,
that provides Power over Ethernet (PoE).
Power Connector
The Access Point 420 does not have a power switch; it is powered on when
connected to the AC power adapter, and the power adapter is connectedto
an active AC power source. The access point's power adapter automatically
adjusts to any voltage between 100--240 volts and either 50 or 60 Hz. There are
no voltage range settings required.
Caution Use only the ACpower adapter supplied with the access point. Use of other
adapters, including adapters that came with other HP network products, may
result in damage to the equipment.
The access point may also receive Power over Ethernet (PoE) from a switch
or other network device that supplies power over the network cable based on
the IEEE 802.3af standard.
Note that if the access point isconnected to a PoEsource device andalso
connected to a localpower source through the AC power adapter,PoE will
be disabled.
1-6

Introducing the HP ProCurve Wireless Access Point 420
Back of the Access Point
Reset Button
This button is used to reset the hardware or restore the factory defaults:
 To Reset the Access Point While it is Powered On – This action clears
any temporary error conditions that may have occurred and executes the
access point self test.
 To Restore Factory Default Configuration– When the Reset button
is pressed for more than five seconds, any configuration changes you may
have made through the access point console or the web browser interface
are removed, and the factory default configuration is restored to the
access point. Forthe specific method to restore the factory default
configuration, see “Restoring the Factory Default Configuration”in
chapter 4,“Troubleshooting” of this manual.
Wireless Access Point 420
IntroducingtheHP ProCurve
1-7

Introducing the HP ProCurve Wireless Access Point 420
Access Point Features
Introducing the HP ProCurve
Wireless Access Point 420
Access Point Features
The wireless features of the Access Point 420 include:
 supportsup to 128 wireless clients
 IEEE 802.11g Compliant – interoperable with multiple vendors
 precise control over signal transmission power and data rate
 advanced security through 64/128/152-bit WEP encryption, Wi-Fi
Protected Access (WPA), IEEE 802.1x, remote authentication via a
RADIUS server,and MAC address filtering features to protect your sensi-
tive data andauthenticate only authorized users to your network
 remote logging of system messages
 time synchronization via SNTPserver for message logs
 auto channel selection – simplifies access deployment by testing all
available channels and selecting the best channel based onsignal-to-noise
ratio
 international country configuration – select the appropriate country and
the access point automatically configures radio operation to match regu-
latory requirements (model J8131A only)
The other basic features of the Access Point 420 include:
 one 10/100Base-TX RJ-45 port
 supports Power over Ethernet based on the IEEE 802.3af standard
 full-duplexoperation for the 10/100 RJ-45 port
 easy management of the access point through several available interfaces:
• console interface—a full featured, easy to use,VT-100 terminal
interface that is especially good for out-of-band access point manage-
ment or for Telnetaccess to the access point
• web browser interface—an easy to use built-in graphical interface
that can be accessed from common web browsers
 support for up to 64 IEEE 802.1Q-compliant VLANs (as specified for each
client in the RADIUS server) so that wireless clients can join the appro-
priatelogical grouping for the network user's needs
 support for many advanced features to enhance network performance—
fora description, see the Management and Configuration Guide, which
is on the Documentation CD-ROM that is included with your access point.
 download of new access pointsoftware for product enhancements or
software updates
 dual flash images – enables auto-recovery upon unsuccessful download
1-8

2
Installing the Access Point 420
The HP Access Point 420 is easy to install. It comes with an accessorykit that
includes a bracket for mounting the access point on a wall. The bracket is
designed to allow mounting the access point ina variety of locations and
orientations.
This chapter shows you how to install your Access Point 420.
Included Parts
The Access Point 420 has the following components shipped with it:
 HP ProCurve Wireless Access Point 420 Installation and Getting
Started Guide (J8130A-90001), this manual
 HP ProCurveProduct Documentation CD-ROM
(contains PDF file copiesof the documentation for the Access Point 420,
including the Management and Configuration Guide)
 Customer Support/Warranty booklet
 Accessorykit (5069-5700)
• four 5/8-inch number 12 wood screws to attach the access point to a
wall
• four plastic wall plugs for mounting on abrick or concrete wall
• four rubber feet
 Antenna (5092-0723)
 Mounting bracket (5092-0711)
 AC power adapter (5092-0728)
 AC power cord, one of the following:
United States/Canada/Mexico 8120-0740
Continental Europe 8121-0731
United Kingdom/Hong Kong/Singapore 8121-0739
Australia/New Zealand 8121-0730
Japan 8121-0736
China 8121-0742
Denmark 8121-0733
Switzerland 8121-0738
Access Point 420
Installingthe
2-1

Installing the Access Point 420
Installation Procedures
Installingthe
Access Point 420
Installation Procedures
Summary
Follow these easy steps to install your access point. The rest ofthis chapter
provides details on these steps.
1. Prepare the installation site (page 2-4). Make sure that the physical
environment into which you will be installing the access point is properly
prepared, including having the correct network cabling ready to connect
to the access point andhaving an appropriate location for the access
point. Please see page 2-3 for some installation precautions.
2. Verify that the access point passes self test (page 2-5). This is a
simple process of plugging the access point into a power source, or
connecting it to a switch that provides Power over Ethernet, and
observing that the LEDs on theaccess point’s top panel indicate correct
access point operation.
3. Mount the access point (page 2-7). The Access Point 420 can be
mounted ona wall, or on a horizontal surface.
4. Connect power to the access point (page 2-9). Once the access point
is mounted, plug it into a nearby main power source, or connect it to a
switch that provides Power over Ethernet.
5. Connect to the network (page2-10). Using the appropriate network
cable, connect the access point to a network connection point, such as a
switch. The network connection can also be used to provide power to the
access point through its PoE feature.
6. Position the antennas on the access point (page 2-10). Position
each antennaalong a different axis to enhance signal coverage.
7. Connect aconsole to the access point (optional—page2-11). You
may wish to modify the access point’s configuration, for example, to
configure an IP address so it can be managed using a web browser or
through a Telnet session. Configuration changes can be made easily by
using a consolecableto connect a PC to the access point’s console port.
At this point, your access point is fully installed. See the rest of this chapter if
you need moredetailed information on any of these installation steps.
2-2

Installing theAccess Point 420
Installation Procedures
Installation Precautions:
Follow these precautions when installing your HP Access Point 420:
Caut i o ns  Make sure that the power source circuits are properly grounded, then use
thepower adapter supplied with the access point to connect it to the
power source.
 You can alternatively power the access point through a networkconnec-
tion toa switch or other network connection device that provides Power
over Ethernet. However, note that if the access point is connected to a
power source using its AC power adapter,Power over Ethernet is
disabled.
 Use only the AC power adapter supplied with the access point. Use of
other adapters, including adapters that came with other HP network
products, may result in damage to the equipment.
 When using the acess point's AC power adapter, note that the ACoutlet
should be near the access point and should be easily accessible in case
the access point must be powered off.
 Ensure that the access point does not overload the power circuits, wiring,
and over-current protection. Todetermine the possibility of overloading
the supply circuits, add together the ampere ratings of all devices installed
on the same circuit as the access point andcompare the totalwith the
rating limit for the circuit. The maximum ampere ratings are usually
printed on devices near the ACpower connectors.
 Do not installthe access point inan environment where the operating
ambient temperature might exceed 40°C (104°F).
 Make sure the air flow around the sides of the access point is not
restricted.
Access Point 420
Installingthe
2-3

Installing the Access Point 420
Installation Procedures
1. Prepare the Installation Site
 Cabling Infrastructure - Ensure that the cabling infrastructure meets
thenecessary network specifications. See the following table for cable
types and lengths, and see appendix B, “Access Point Port and Network
Cables”for more information.
Table2-1. Summary of Cable Types to Use With the Access Point
Port Type Cable Type Length Limits
Twisted-Pair Cables
Installingthe
Access Point 420
10/100Base-TX • 10 Mbps operation:
Category 3, 4, or 5, 100-ohm unshielded
twisted-pair (UTP)
• 100 Mbps operation:
Category 5, 100-ohm UTP or shielded
twisted-pair (STP) cable.
100 meters
Note:Since the 10Base-T operation is through
the 10/100Base-TX port on the access point, if
you ever want to upgrade the ports on other
devices to 100Base-TX, it would be best to
cable the 10/100Base-TX port on the access
point initially with category 5 cable.
The 10/100-Base-TX port on the
Access Point 420 usesan MDI pin
configuration, which requires you to use
straight-through cable whenconnecting to
another device that has an MDI-X port, or
crossovercable when connecting to a device
that has an MDI port. However, if the device to
which you are connecting supports auto-
MDIX, then you can use either a straight-
through or crossover cable.
 Installation Location -Before installing the access point, plan its loca-
tion and orientation relative to other devices and equipment:
• Try to place the access point in the center of your wireless network.
Normally, the higher you place the antenna, the better theperfor-
mance. You may need to reposition the access point after testing the
signal strength on several wireless clients to ensure that theaccess
point’s location provides optimal reception throughout your office.
• At the back of the access point, leave at least 7.6 cm (3 inches) of
space forthe twisted-pair cabling and the power cord.
• On the sides of the access point, leave at least 7.6 cm (3 inches) for
cooling.
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Installing theAccess Point 420
Installation Procedures
2. Verify the Access Point Passes the Self Test
Before mounting the access point in its network location, you should first
verify that it is working properly by plugging it into a power source, or
connecting it to a switch that provides Power over Ethernet, and verifying that
it passes its self test.
1. Connect a network cable from a PoE source device (such as a switch) to
the RJ-45 port on the back of the access point,or connect the supplied
power adapter to the power connector on the back of the access point,
and then into a properly grounded electrical outlet.
Or connectpower adapter
to the power connector
Connectnetwork
cable to PoE switch
Access Point 420
Installingthe
Not e The Access Point 420 does not have a power switch. It is powered on when
the power adapter is connected to the access point and toa power source, or
when a network cable is connected to the access point and to a network device
that provides Power over Ethernet. For safety, when connecting to an elec-
trical outlet, the power outletshould be located near the access point.
Use only the ACpower adapter supplied with the access point. Use of other
adapters, including adapters that came with other HP network products, may
result in damage to the equipment.
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Installing the Access Point 420
Installation Procedures
2. Check the LEDs on the access point as described below.
hp procurve
wireless
access point
420
Link/Activity
Wireless
10/100-TX
Power
Wireless LED
Ethernet LED
Power LED
Installingthe
Access Point 420
When the access point is powered on, it performsits diagnostic self test.
The self test takes approximately 50 seconds to complete.
LED Behavior:
During the self test:
• The 10/100Base-TX and Wireless LEDs go off and then may come on
again duringphasesof the self test. For the duration of the self test,
the Power LED blinks.
When the self test completes successfully:
• The Power LED remains on.
• The 10/100Base-TX and Wireless LEDs on the top of the access point
go into their normaloperational mode:
– If the ports are connected to active network devices, the LEDs
should be on.
– If the ports are not connected to active network devices, the LEDs
stayoff.
If the LED display is different than what is described above, especially if
the Power LED does not stop blinking, the self test has not completed
correctly. Refer to chapter 4,“Troubleshooting” for diagnostic help.
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