Accton Technology WA4101ACCA hp procurve wireless AP 420 na User Manual ig
Accton Technology Corp hp procurve wireless AP 420 na ig
User manual
hp procurve wireless AP 420 ww/na
Installation and Getting Started Guide
Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5552
Roseville, California 95747-5552
http://www.hp.com/go/hpprocurve
© Copyright 2003 Hewlett-Packard Company
All Rights Reserved.
This document contains information which is protected by
copyright. Reproduction, adaptation, or translation without
prior permission is prohibited, except as allowed under the
copyright laws.
Publication Number
J8130-90001
July 2003
Applicable Products
hp procurve wireless AP 420 ww/na (J8131A/J8130A)
Disclaimer
The information contained in this document is subject to
change without notice.
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.
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.
A copy of the specific warranty terms applicable to your
Hewlett-Packard products and replacement parts can be
obtained from your HP Sales and Service Office or
authorized dealer.
Safety
Before installing and operating these products, please read
the “Installation Precautions” in chapter 2, “Installing the
Access Point 420ww/na”, and the safety statements in appendix
C, “Safety and Regulatory Statements”.
i
Contents
1 Introducing the hp procurve wireless AP 420 ww/na
Top of the Access Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
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 hp procurve wireless AP 420 ww/na
Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
3. Verify the Access Point Passes the Self Test . . . . . . . . . . . . . . . . . . . 2-5
LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
4. Mount the Access Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
5. Connect the Access Point to a Power Source . . . . . . . . . . . . . . . . . . 2-9
6. Connect the Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
7. Position the Antennas on the Access Point . . . . . . . . . . . . . . . . . . . 2-10
8. (Optional) Connect a Console to the Access Point 420wl . . . . . . . 2-11
Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Ad Hoc Wireless LAN (no access point) . . . . . . . . . . . . . . . . . . . . . . . 2-13
ii
Infrastructure Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Infrastructure Wireless LAN for Roaming Wireless PCs . . . . . . . . . . 2-15
3 Getting Started With Access Point Configuration
Recommended Minimal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using the Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Using the IP Address for Remote Access Point Management . . . . . 3-7
Starting a Telnet Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Starting a Web Browser Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
4 Troubleshooting
Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Testing the Access Point by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Checking the Access Point’s LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Testing Access Point-to-Device Network Communications . . . . . . . . 4-7
Testing End-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
A Specifications
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Acoustic ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
iii
EMC Compliance (Class B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Radio Signal Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
B Access Point Port and Network Cables
Access Point Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
Informations concernant la sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Hinweise zur Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Considerazioni sulla sicurezza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Consideraciones sobre seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Safety Information (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Safety Information (China) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Australia/New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10
iv
1-1
Introducing the hp procurve
wireless AP 420 ww/na
1
Introducing the
hp procurve wireless AP 420 ww/na
The HP Procurve Access Point 420ww/na is a wireless repeater that seamlessly
integrates with existing wired networks to support connectivity for mobile
users or wireless workstations. This solution offers fast, reliable wireless
connectivity with considerable cost savings over wired LANs. Just install
enough wireless access points to cover your network area, plug wireless cards
into your notebooks or install wireless adapters into your desktops, and start
networking.
hp procurve wireless AP 420 ww/na (J8131A/J8130A)
1-2
Introducing the hp procurve wireless AP 420 ww/na
Introducing the hp procurve
wireless AP 420 ww/na
Throughout this manual, this access point will be abbreviated as the
hp procurve wireless AP 420 ww/na.
The AP 420 ww/na has one 10/100Base-TX RJ-45 port. This port also
supports Power over Ethernet based on the IEEE 802.3af standard. 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. In addition, the Access Point 420wl
offers full network management capabilities.
This chapter describes your hp procurve wireless AP 420 ww/na including:
■Top and back of the access point
■Access point features
1-3
Introducing the hp procurve wireless AP 420 ww/na
Top of the Access Point
Introducing the hp procurve
wireless AP 420 ww/na
Top of the Access Point
LEDs
Table 1-1. Access Point LEDs
Power,
10/100-T Link,
and Wireless
Link LEDs
hp procurve wireless AP 420 ww/na
Antennas
Access Point
LEDs State Meaning
Power
(green) On The access point is receiving power.
Off The access point is NOT receiving power.
Blinking* The access point is undergoing self test or downloading software.
The self test 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.
Blinking*
(prolonged) A component of the access point has failed its self test.
1-4
Introducing the hp procurve wireless AP 420 ww/na
Top of the Access Point
Introducing thehp procurve
wireless AP 420 ww/na
10/100-T On (green) The LAN port is enabled and receiving a link indication from 100 Mbps device.
On (amber) The LAN port is enabled and receiving a link indication from 10 Mbps device.
Off The LAN port has no active network cable connected, or is not receiving a link beat.
Otherwise, the port may have been disabled through the access point console, or the
web browser interface.
Blinking* The LAN port is transmitting or receiving traffic.
Wireless On The wireless interface is enabled and receiving a link indication from a wireless client
Off The wireless interface is not receiving a link beat. Otherwise, the wireless interface
may have been disabled through the access point console, or the web browser
interface.
Blinking* The wireless interface is transmitting or receiving traffic.
* The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
Access Point
LEDs State Meaning
1-5
Introducing the hp procurve wireless AP 420 ww/na
Back of the Access Point
Introducing the hp procurve
wireless AP 420 ww/na
Back of the Access Point
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 is used. 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 on
positioning the antennas, 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
“Lock”. You can prevent unauthorized removal the access point by wrapping
the Kensington security cable (not provided) around an unmoveable object,
inserting the lock into the slot, and turning the key.
Reset buttons
Antennas
hp procurve wireless AP 420 ww/na
10/100Base-TX RJ-45
port and PoE Input
DC power connector
Console Port
Lock
1-6
Introducing the hp procurve wireless AP 420 ww/na
Back of the Access Point
Introducing the hp procurve
wireless AP 420 ww/na
Console Port
This port is used to connect a console to the access point by using the serial
cable supplied with the access point. This connection is described under
“Connect a Console to the Access Point” in chapter 2, “Installing the
Access Point 420wl”. The console can be a PC or workstation running a VT-100
terminal emulator, or a VT-100 terminal.
Network Port
The access point includes one 10/100Base-TX port. 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 device such as 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 to these switches.
Refer to following section for information on supplying power to the access
point’s network port from a network device, such as a switch, that provides
Power over Ethernet (PoE).
Power Connector
The AP 420 ww/na does not have a power switch; it is powered on when
connected to the AC power adapter, and the power adapter is connected to
an active AC power source. The access point 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 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.
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.
1-7
Introducing the hp procurve wireless AP 420 ww/na
Back of the Access Point
Introducing the hp procurve
wireless AP 420 ww/na
Note that if the access point is connected to a PoE source device and also
connected to a local power source through the AC power adapter, PoE will
be disabled.
Reset Button
This button is used to restore the factory default configuration. When the
Reset button is pressed, any configuration changes you may have made
through the access point console, the web browser interface, and SNMP
management are removed, and the factory default configuration is restored to
the access point. For the specific method to restore the factory default
configuration, see “Restoring the Factory Default Configuration” in chapter 4,
“Troubleshooting” of this manual.
1-8
Introducing the hp procurve wireless AP 420 ww/na
Access Point Features
Introducing the hp procurve
wireless AP 420 ww/na
Access Point Features
The wireless features of the Access Point 420ww/na include:
■supports up to 64 wireless clients.
■802.11g draft Compliant – interoperable with multiple vendors.
■provides seamless roaming within 802.11g draft WLAN environment.
■precise control over signal transmission power and data rate.
■advanced security through 64/128-bit WEP encryption, Wi-Fi Protected
Access (WPA), 802.1x, remote authentication via RADIUS server, and
MAC address filtering features to protect your sensitive data and authen-
ticate only authorized users to your network.
■remote logging of system messages.
■time synchronization via SNTP server for message logs.
■supports PPP dial-in connection using standard dial-up program.
The other basic features of the Access Point 420ww/na include:
■one 10/100Base-TX RJ-45 port.
■supports Power over Ethernet based on the IEEE 802.3af standard.
■automatic learning of the network addresses in the access point’s address
forwarding table.
■full-duplex operation for the 10/100 RJ-45 port when connected to other
auto-negotiating devices.
■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 Telnet access 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 one IEEE 802.1Q-compliant VLAN so the access point can join
the appropriate logical grouping that fits your business needs.
■support for many advanced features to enhance network performance—
for a 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 point software for product enhancements or bug
fixes.
2-1
Installing the
wireless AP 420 ww/na
2
Installing the hp procurve wireless AP 420 ww/na
The HP Access Point 420ww/na is easy to install. It comes with an accessory kit
that includes a bracket for mounting the access point on a wall. The bracket
is designed to allow mounting the access point in a variety of locations and
orientations.
This chapter shows you how to install your Access Point 420ww/na.
Included Parts
The AP 420 ww/na has the following components shipped with it:
■ hp procurve wireless AP 420 ww/na Installation and Getting Started Guide
(J8130-90001), this manual
■ HP Procurve Product Documentation CD-ROM
(contains PDF file copies of the documentation for the
Access Point 420ww/na, including the Management and Configuration
Guide)
■Console cable
■Customer Support/Warranty booklet
■Accessory kit (5064-2085?)
• one mounting bracket
• four 5/8-inch number 12 wood screws to attach the access point to a
wall
• four plastic wall plugs for mounting on brick or concrete wall
• four rubber feet
■AC power adapter, one of the following:
Australia/New Zealand
China
Continental Europe
Denmark
Japan
Switzerland
United Kingdom/Hong Kong/Singapore
United States/Canada/Mexico
8120-6803 ?
8120-8377
8120-6802
8120-6806
8120-6804
8120-6807
8120-8709
8120-6805
2-2
Installing the hp procurve wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
Installation Procedures
Summary
Follow these easy steps to install your access point. The rest of this 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 and having 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 into
a switch that provides Power over Ethernet, and observing that the LEDs
on the access point’s front panel indicate correct access point operation.
3. Mount the access point ( page 2-7). The Access Point 420ww/na can be
mounted on a 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 the nearby main power source, or into a switch
that provides Power over Ethernet.
5. Connect to the network (page 2-10). Using the appropriate network
cable, connect the access point to a network connection point, such as a
switch.
6. Position the antennas on the access point (page 2-10). Position
each antenna along a different axis to enhance signal coverage.
7. Connect a console to the access point (optional—page 2-11). 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, from
an SNMP network management station, or through a Telnet session.
Configuration changes can be made easily by using the included console
cable to 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 more detailed information on any of these installation steps.
2-3
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
Installation Precautions:
Follow these precautions when installing your HP Access Point 420ww/na.
Cautions ■Make sure that the power source circuits are properly grounded, then use
the power adapter supplied with the access point to connect it to the
power source.
■You can alternatively power the access point through a network connec-
tion to a switch or other network connection device that provides Power
over Ethernet. However, note that if the access point is connected to a
power source, Power over Ethernet will be 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 installing the access point, note that the AC outlet 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. To determine the possibility of overloading
the supply circuits, add together the ampere ratings of all devices installed
on the same circuit as the access point and compare the total with the
rating limit for the circuit. The maximum ampere ratings are usually
printed on the devices near the AC power connectors.
■Do not install the access point in an environment where the operating
ambient temperature might exceed 55°C (131°F).
■Make sure the air flow around the sides of the access point is not
restricted.
2-4
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
1. Prepare the Installation Site
■Cabling Infrastructure - Ensure that the cabling infrastructure meets
the necessary network specifications. See the following table for cable
types and lengths, and see appendix B, “Access Point Port and Network
Cables” for more information:
Table 2-1. Summary of Cable Types to Use With the Access Point
■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 the perfor-
mance. You may need to reposition the access point after testing the
signal strength on several wireless clients to ensure that the access
point’s location provides optimal reception throughout your office.
• In the back of the access point, leave at least 7.6 cm (3 inches) of space
for the twisted-pair cabling and the power cord.
• On the sides of the access point, leave at least 7.6 cm (3 inches) for
cooling.
Port Type Cable Type Length Limits
Twisted-Pair Cables
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
10/100Base-TX ports, if you ever want to
upgrade the ports to 100Base-TX, it would be
best to cable the ports initially with category 5
cable.
The 10/100-Base-TX port on the
Access Point 420ww/na uses an MDI pin
configuration, which requires you to use
straight-through cable when connecting to
another device that has an MDI-X port, or
crossover cable 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 straight-
through or crossover cable.
2-5
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
3. 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 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 jack on the back of the access point, or connect the power
adapter supplied with the access point to the power connector on the back
of the access point, and then into a properly grounded electrical outlet.
Note The AP 420 ww/na does not have a power switch. It is powered on when
the power adapter is connected to the access point and to a 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 outlet should be located near the access point.
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.
Or connect power adapter
to the power connector
Connect network
cable to PoE switch
2-6
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
2. Check the LEDs on the access point as described below.
When the access point is powered on, it performs its diagnostic self test.
The self test takes approximately 50 seconds to complete.
LED Behavior:
During the self test:• The 10/100BASE-T and Wireless LEDs go off and then may come on
again during phases of 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-T and Wireless LEDs on the top of the access point go
into their normal operational 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
will stay off.
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.
Wireless LED
Ethernet LED
Power LED
2-7
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
4. Mount the Access Point
After you have verified that the access point passes the self test, you are ready
to mount the access point in a stable location. The Access Point 420ww/na can be
mounted in these ways:
■on a wall
■on a horizontal surface
Wall Mounting
You can mount the access point on a wall as shown in the illustrations on the
next page.
Caution The access point should be mounted only to a wall or wood surface that is at
least 1/2-inch plywood or its equivalent.
1. Position the mounting bracket on the wall, and mark the holes.
2. To mount the access point on a plastered brick or concrete wall, first drill
four holes 22 mm deep and 3.5 mm in diameter, and press the included
four wall plugs firmly into the drilled holes until they are flush with the
surface of the wall.
3. Set the four 5/8-inch number 12 wood screws in the holes, leaving about
3 mm (0.12 in.) clearance from the wall.
4. Position the mounting bracket over the wall screws, slide the bracket onto
the screws, and then tighten down the screws.
5. Slide the access point into the protruding slots on the back of the
mounting bracket. The two retaining latches will slip into place over the
back edge of the access point.
6. To prevent unauthorized removal of the access point, you can use a
Kensington Slim MicroSaver security cable (not included) to attach the
access point to an immovable object.
2-8
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
Mounting the Bracket on a Wall Sliding the Access Point onto the Bracket
5/8-inch
wood screws
2-9
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
Horizontal Surface Mounting
Place the access point on a table or other horizontal surface. The access point
comes with rubber feet in the accessory kit that can be used to help keep the
access point from sliding on the surface.
Attach the rubber feet to the four corners on the bottom of the access point
within the embossed lines. Use a sturdy surface in an uncluttered area. You
may want to secure the networking cable and access point’s power cord to
the table leg or other part of the surface structure to help prevent tripping over
the cords.
Caution Make sure the air flow is not restricted around the sides of the access point.
5. Connect the Access Point to a Power Source
1. Plug the included power adapter into the access point’s power connector
and into a nearby AC power source.
Or, alternatively, connect the Ethernet port on the access point to a switch
or other network device that provides Power over Ethernet.
2. Re-check the LEDs during self test. See “LED Behavior” on page 2-6.
2-10
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
6. Connect the Network Cable
Connect the network cable, described under “Cabling Infrastructure”
(page 2-4), from the network device or your patch panel to the RJ-45 port on
the access point.
Using the RJ-45 Connectors
To connect:
Push the RJ-45 plug into the RJ-45
jack until the tab on the plug clicks
into place. When power is on for the
access point and for the connected
device, the 10/100BASE-T link LED
should light to confirm a powered-on
device (for example, an end node) is
at the other end of the cable.
If the 10/100BASE-T link LED does
not go on when the network cable is
connected to the port, see “Diag-
nosing with the LEDs” in chapter 4,
“Troubleshooting”.
To disconnect:
Press the small tab on the plug and pull the plug out of the jack.
7. Position the Antennas on the Access Point
The antennas emit signals along a toroidal plane – and thus provide more
effective coverage when positioned along alternate axes. For example, you
might position the antennas around 45 to 90 degrees from each other.
The access point also compares the strength of an incoming signal on both
antennas, and uses the antenna receiving the stronger signal to communicate
with a wireless client.
RJ-45 connector
Unshielded twisted-pair cable:
• Category 3, 4, or 5 for 10 Mbps ports
• Category 5 or better for 100 Mbps ports
Maximum distance: 100 meters
2-11
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
8. (Optional) Connect a Console to the
AP 420 ww/na
The AP 420 ww/na has a full-featured, easy to use console interface for
performing access point management tasks including the following:
■Modify the access point’s configuration to optimize access point perfor-
mance, enhance network traffic control, and improve network security
■Download new software to the access point
■Add passwords to control access to the access point from the console,
web browser interface, and network management stations
The console can be accessed through these methods:
■ Out-of-Band: The AP 420 ww/na comes with a serial cable for
connecting a PC or VT-100 terminal, to be used as a console, directly to
the access point.
■In-Band: Access the console using Telnet from a PC or UNIX station on
the network, and a VT-100 terminal emulator. This method requires that
you first configure the access point with an IP address and subnet mask
by using either out-of-band console access or through DHCP. For more
information on IP addressing and on starting a Telnet session, see
chapter 3, “Getting Started With Access Point Configuration”, and the
Management and Configuration Guide, which is on the Documentation
CD-ROM that came with your access point.
The AP 420 ww/na can simultaneously support one out-of-band console
session through the Console Port and four in-band Telnet console sessions.
Terminal Configuration
To connect a console to the access point, configure the PC terminal emulator
as a DEC VT-100 (ANSI) terminal or use a VT-100 terminal, and configure either
one to operate with these settings:
• 9600 baud
• 8 data bits, 1 stop bit, no parity, and flow control set to None
• For the Windows Terminal program, also disable (uncheck) the “Use
Function, Arrow, and Ctrl Keys for Windows” option ?
• For the Hilgraeve HyperTerminal program, select the “Terminal keys”
option for the “Function, arrow, and ctrl keys act as” parameter
You can only attach to the console using these configuration settings.
2-12
Installing the wireless AP 420 ww/na
Installation Procedures
Installing the
wireless AP 420 ww/na
Direct Console Access
To connect a console to the
access point, follow these steps:
1. Connect the PC or terminal
to the access point’s
Console port using the
console cable included with
the AP 420 ww/na. (If
your PC or terminal has a
25-pin serial connector, first
attach a 9-pin to 25-pin
straight-through adapter at
one end of the console
cable.)
2. Turn on the terminal or PC’s
power and, if using a PC,
start the PC terminal
program.
3. Enter “admin” at the “Username:” prompt, and press the [Enter] key at the
“Password” prompt. You will then see the access point console command
(CLI) prompt, for example:
hp procurve wireless AP 420 ww/na
If you want to continue with console management of the access point at this
time, see chapter 3, “Getting Started With Access Point Configuration” for
some basic configuration steps. For more detailed information, refer to the
Management and Configuration Guide, which is on the Documentation
CD-ROM that came with your access point.
Console port
Console cable supplied
with the access point
PC running a terminal
emulator program, or
a VT-100 terminal
2-13
Installing the wireless AP 420 ww/na
Sample Network Topologies
Installing the
wireless AP 420 ww/na
Sample Network Topologies
This section shows you a few sample network topologies in which the
Access Point 420ww/na is implemented. The wireless solution supports a stand-
alone wireless network configuration as well as an integrated configuration
with wired Ethernet LANs. Wireless network cards, adapters, and access
points can be configured as:
■Ad hoc for departmental or SOHO LANs
■Infrastructure for wireless LANs
■Infrastructure wireless LAN for roaming wireless PCs
For more topology information, see the HP network products World Wide Web
site, http://www.hp.com/go/hpprocurve.
Ad Hoc Wireless LAN (no access point)
An ad-hoc wireless LAN consists of a group of computers, each equipped with
a wireless adapter, connected via radio signals as an independent wireless
LAN. Computers in a specific ad-hoc wireless LAN must therefore be config-
ured to the same radio channel. An ad-hoc wireless LAN can be used for a
branch office or SOHO operation.
Notebook with
Wireless USB Adapter
Notebook with
Wireless PC Card
PC with
Wireless PCI Adapter
2-14
Installing the wireless AP 420 ww/na
Sample Network Topologies
Installing the
wireless AP 420 ww/na
Infrastructure Wireless LAN
The Access Point 420ww/na can provide access to a wired LAN for wireless
clients. An integrated wired/wireless LAN is called an Infrastructure configu-
ration. A Basic Service Set (BSS) consists of a group of wireless PC users, and
an access point that is directly connected to the wired LAN. Each wireless PC
in this BSS can talk to any computer in its wireless group via a radio link, or
access other computers or network resources in the wired LAN infrastructure
via the access point.
The infrastructure configuration not only extends the accessibility of wireless
PCs to the wired LAN, but also increases the effective wireless transmission
range for wireless PCs by passing their signal through one or more access
points.
A wireless infrastructure can provide an extension of the wired LAN to
wireless clients for access to a local resources, or for a bridged connection
between mobile workers located at distant points on the network.
Desktop PC
AP 420 ww/na
File
Server
Switch
PC with
wireless PCI
Adapter
Notebook with
wireless PC
Card Adapter
Wired LAN Extension
to Wireless Adapters
2-15
Installing the wireless AP 420 ww/na
Sample Network Topologies
Installing the
wireless AP 420 ww/na
Infrastructure Wireless LAN for Roaming Wireless PCs
The Basic Service Set (BSS) is the communications domain for each access
point and its associated wireless clients. For wireless PCs that do not need to
support roaming, set the Service Set Identifier (SSID) for the wireless card to
the BSS ID of the access point to which you want to connect.
Check with your administrator for the BSS ID of the access point to which you
should connect. A wireless infrastructure can also support roaming for mobile
workers. More than one access point can be configured to create an Extended
Service Set (ESS). By placing the access points so that a continuous coverage
area is created, wireless users within this ESS can roam freely. All HP wireless
network cards and adapters and access points within a specific ESS must be
configured with the same SSID.
AP 420 ww/na
<BSS1>
Desktop PC
AP 420 ww/na
File
Server
Switch
Switch
Wireless Client
Wireless Client
Wireless Client
<BSS2>
<ESS>
Seamless Roaming
2-16
Installing the wireless AP 420 ww/na
Sample Network Topologies
Installing the
wireless AP 420 ww/na
3-1
Getting Started With Access
Point Configuration
3
Getting Started With Access Point
Configuration
This chapter is a guide for using the access point’s console to quickly assign
an IP (Internet Protocol) address and subnet mask to the access point, set a
Manager password, and, optionally, configure other basic features.
For more information on using the access point’s console and the other access
point management interfaces: the web browser interface and SNMP manage-
ment tools, please see the Management and Configuration Guide, which is
on the Documentation CD-ROM that came with your access point.
Recommended Minimal Configuration
In the factory default configuration, the access point has no IP (Internet
Protocol) address and subnet mask, and no passwords. In this state, it can be
managed only through a direct console connection. To manage the access
point through in-band (networked) access, you should configure the access
point with an IP address and subnet mask compatible with your network. Also,
you should configure a Manager password to control access privileges from
the console and web browser interface. Other parameters can be left at their
default settings or you can configure them with values you enter.
Many other features can be configured through the access point’s console
interface, to optimize the access point’s performance, to enhance your control
of the network traffic, and to improve network security. Once an IP address
has been configured on the access point, these features can be accessed more
conveniently through a remote Telnet session, through the access point’s web
browser interface, and from an SNMP network management station running
a network management program. For a listing of access point features avail-
able with and without an IP address, refer to “How IP Addressing Affects
Access Point Operation” in the Management and Configuration Guide,
which is on the Documentation CD-ROM that came with your access point.
For more information on IP addressing, refer to “IP Configuration” in the
Management and Configuration Guide.
3-2
Getting Started With Access Point Configuration
Getting Started With Access
Point Configuration
Note By default, the access point is configured to acquire an IP address configura-
tion from a DHCP server. To use DHCP instead of the manual method
described in this chapter, see “DHCP Operation” in the Management and
Configuration Guide, which is on the Documentation CD-ROM that came
with your access point.
Using the Command Line Interface
The quickest and easiest way to minimally configure the access point for
management and password protection in your network is to use a direct
console connection to the access point, start a console session, and access
the command line interface (CLI).
1. Using the method described in the preceding chapter, connect a terminal
device to the access point, and press [Enter] to initiate the console
connection.
2. Enter “admin” for the user name. The default password is null, so just
press [Enter] at the password prompt. The CLI prompt appears displaying
the access point’s model number.
3. Type configure to enter global configuration mode.
4. Type username username to create a user name for the Manager, where
“username” can consist of 3 to 16 alphanumeric characters and is case
sensitive.
5. Type password password to create a password for the Manager, where
“password” can consist of up to 8 alphanumeric characters and is case
sensitive.
Username: admin
Password:
HP Procurve Access Point wl420#
HP Procurve Access Point wl420#configure
Enter configuration commands, one per line. End with CTRL/Z
HP Procurve Access Point wl420(config)#
HP Procurve Access Point wl420#configure
Enter configuration commands, one per line. End with CTRL/Z
HP Procurve Access Point wl420(config)#username admin
HP Procurve Access Point wl420(config)#
HP Procurve Access Point wl420#configure
Enter configuration commands, one per line. End with CTRL/Z
HP Procurve Access Point wl420(config)#password [password]
HP Procurve Access Point wl420(config)#
3-3
Getting Started With Access Point Configuration
Getting Started With Access
Point Configuration
6. Type end to exit configuration mode, and then enter the show interface
ethernet command to display the access point’s default IP configuration,
including IP address, subnet mask, and default gateway. The following
illustration shows the default settings.
7. Type configure to enter configuration mode, then type interface ethernet to
access the Ethernet interface-configuration mode.
8. Type ip address ip-address netmask gateway, where “ip-address” is the
access point’s IP address, “netmask” is the network mask for the network,
and “gateway” is the default gateway router. Check with your system
administrator to obtain an IP address that is compatible with your
network.
HP Procurve Access Point wl420#show interface ethernet
Ethernet Interface Information
========================================
IP Address : 0.0.0.0
Subnet Mask : 255.255.255.0
Default Gateway : 0.0.0.0
Primary DNS : 0.0.0.0
Secondary DNS : 0.0.0.0
Speed-duplex : 100Base-TX Full Duplex
Admin status : Up
Operational status : Up
HP Procurve Access Point wl420#
HP Procurve Access Point wl420#configure
HP Procurve Access Point wl420(config)#interface ethernet
Enter Ethernet configuration commands, one per line.
HP Procurve Access Point wl420(if-ethernet)#
HP Procurve Access Point wl420(if-ethernet)#ip address 192.168.1.1
255.255.255.0 192.168.1.254
3-4
Getting Started With Access Point Configuration
Getting Started With Access
Point Configuration
9. Type exit to leave configuration mode, then enter the show interface
wireless g command to display the access point’s default wireless config-
uration, including wireless communication domain, radio channel, and
operation status. The following illustration shows the default settings.
10. Type configure to return to global configuration mode, and then type
interface wireless g to access the wireless interface-configuration mode.
11. Set the Service Set Identifier (SSID) to identify the communications
domain for the access point. Type ssid identifier, where “identifier” can
consist of up to 32 alphanumeric characters and is case sensitive.
HP Procurve Access Point wl420(if-ethernet)#exit
HP Procurve Access Point wl420#show interface wireless g
Wireless Interface Information
===========================================================
----------------Identification-----------------------------
Description : Enterprise 802.11g Access Point
SSID : Enterprise Wireless AP
Channel : 0 (AUTO)
Status : Disable
----------------802.11 Parameters--------------------------
Transmit Power : FULL (17 dBm)
Max Station Data Rate : 54Mbps
Fragmentation Threshold : 2346 bytes
RTS Threshold : 2347 bytes
Beacon Interval : 100 TUs
DTIM Interval : 2 beacons
Maximum Association : 64 stations
----------------Security-----------------------------------
Closed System : DISABLED
Multicast cipher : WEP
WPA clients : SUPPORTED
Encryption : DISABLED
Default Transmit Key : 1
Static Keys :
Key 2: EMPTY Key 3: EMPTY Key 4: EMPTY
Authentication Type : OPEN
===========================================================
HP Procurve Access Point wl420#
HP Procurve Access Point wl420#configure
HP Procurve Access Point wl420(config)#interface wireless g
HP Procurve Access Point wl420(if-wireless g)#
HP Procurve Access Point wl420(if-wireless g)#ssid wl420
HP Procurve Access Point wl420(if-wireless g)#
3-5
Getting Started With Access Point Configuration
Getting Started With Access
Point Configuration
12. Set the radio channel through which the access point communicates with
its wireless clients. For most wireless clients, the radio channel is auto-
matically set to the same as that used by the access point to which it is
linked. Type channel number, where “number” can be from 1 to 11,
depending on the wireless regulations specified by your country.
13. Type no shutdown to enable wireless operation.
14. Type Ctrl-Z to save your settings.
Here is some information on the basic IP address and wireless configuration
parameters. For more information on these fields, see the Management and
Configuration Guide, which is on the Documentation CD-ROM that came
with your access point:
HP Procurve Access Point wl420(if-wireless g)#channel 9
HP Procurve Access Point wl420(if-wireless g)#
HP Procurve Access Point wl420(if-wireless g)#no shutdown
HP Procurve Access Point wl420(if-wireless g)#
Parameter Default
Username admin The name of the Manager.
Password none The password for the Manager.
IP Address 0.0.0.0 IP address compatible with your network.
Subnet Mask 255.255.255.0 Subnet mask compatible with your network.
Default Gateway 0.0.0.0 IP address of the next-hop gateway node for network traffic that needs to be
able to reach off-subnet destinations.
SSID ANY The Service Set Identifier is a unique name identifying the communications
domain for the access point. Clients that want to connect to the wireless
network via this specific access point must set their SSIDs to the same name.
Channel 0 (AUTO) The radio channel through which the access point communicates with its
wireless clients. For most wireless clients, the radio channel is automatically
set to the same as that used by the access point to which it is linked.
Wireless Operation Disabled Wireless operation should be enabled only after you configure the
appropriate SSID and radio channel using the no shutdown command.
Note: The IP address and subnet mask assigned for the access point must be compatible with the IP addressing used
in your network. For more information on IP addressing, see the Management and Configuration Guide, which is on
the Documentation CD-ROM that came with your access point.
3-6
Getting Started With Access Point Configuration
Getting Started With Access
Point Configuration
Where to Go From Here
The above procedure using the CLI configured your access point with a
Manager password, IP address, and subnet mask. As a result, with the proper
network connections, you can now manage the access point from a PC
equipped with Telnet, a web browser interface, or from an SNMP-based
network management station. The above procedure also configured the
Service Set Identifier (SSID), radio channel, and enabled wireless operation.
Your wireless clients can now access the network by setting their SSID and
radio channel to the same values used by the access point.
Some basic information on managing your access point is included in the next
section. For more information on the console, web browser, and SNMP
management interfaces, and all the features that can be configured on the
Access Point 420wl, please see the Management and Configuration Guide,
which is on the Documentation CD-ROM that came with your access point.
To Recover from a Lost Manager Password: If you cannot start a con-
sole session because of a lost Manager password, you can clear all passwords
and user names by getting physical access to the access point and pressing
and holding the Reset button for a full second. However, note that this action
will reset all configuration settings to the factory defaults.
3-7
Getting Started With Access Point Configuration
Using the IP Address for Remote Access Point Management
Getting Started With Access
Point Configuration
Using the IP Address for Remote Access
Point Management
With your Access Point 420ww/na, you can use the access point’s IP address to
manage the access point from any PC that is on the same subnet as the access
point. You can use either a Telnet session or a standard web browser to manage
the access point.
Starting a Telnet Session
To access the access point through a Telnet session, follow these steps:
1. Make sure the access point is configured with an IP address and that the
access point is reachable from the PC that is running the Telnet session
(for example, by using a Ping command to the access point’s IP address).
2. Start the Telnet program on a PC that is on the same subnet as the access
point and connect to the access point’s IP address.
3. Enter the user name and password. (The default user name is “admin” and
the default password is null. You will then see the access point’s console
command (CLI) prompt, for example:
Enter ? to see a list of commands that can be executed at the prompt.
Entering any command followed by ? displays a list of options that are
available at that point in the command entry.
Starting a Web Browser Session
Your AP 420 ww/na can be managed through a graphical interface that
you can access from any PC or workstation on the network by running your
web browser (e.g., Java-enabled Internet Explorer 5.5) and typing in the
access point’s IP address as the URL. (See “Using the Command Line Inter-
face” on page 3-2 for information on setting the IP address.) No additional
software installation is required to make this interface available; it is included
in the access point’s onboard software.
Username: admin
Password:
HP Procurve Access Point wl420#
3-8
Getting Started With Access Point Configuration
Using the IP Address for Remote Access Point Management
Getting Started With Access
Point Configuration
A typical web browser interface screen is shown in the next illustration.
For more information on using the web browser interface, please see the
Management and Configuration Guide, which is on the Documentation
CD-ROM that came with your access point.
An extensive help system is also available for the web browser interface.
4-1
Troubleshooting
4
Troubleshooting
This chapter describes how to troubleshoot your HP Procurve
Access Point 420ww/na. Note that this document describes troubleshooting
mostly from a hardware perspective. You can perform more in-depth trouble-
shooting on the Access Point 420ww/na using the software tools available with the
access point, including the full-featured console interface, and the built-in web
browser interface, or SNMP-based network management tools. For more
information, see the chapter “Troubleshooting” in the Management and
Configuration Guide, which is on the Documentation CD-ROM that came
with your access point.
This chapter describes the following:
■basic troubleshooting tips (page 4-1)
■diagnosing with the LEDs (page 4-3)
■Proactive Networking tools (page 4-5)
■hardware diagnostic tests (page 4-6)
■restoring the factory default configuration (page 4-8)
■downloading new software to the Access Point 420wl (page 4-9)
■HP Customer Support Services (page 4-9)
Basic Troubleshooting Tips
Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:
■Connecting to devices that have a fixed full-duplex configuration.
The RJ-45 port uses auto-negotiation to determine the duplex mode. That
is, when connecting to attached devices, the access point will operate in
one of two ways to determine the link speed and the communication mode
(half duplex or full duplex):
• If the connected device is also configured to use auto-negotiation, the
access point will automatically negotiate both link speed and commu-
nication mode.
4-2
Troubleshooting
Basic Troubleshooting Tips
Troubleshooting
• If the connected device has a fixed configuration, for example
100 Mbps,
at half or full duplex, the access point will automatically
sense the link speed, but will default to a communication mode of half
duplex.
Because the AP 420 ww/na behaves in this way (in compliance with
the IEEE 802.3 standard), if a device connected to the access point has
a fixed configuration at full duplex, the device will not connect correctly
to the access point. The result will be high error rates and very inefficient
communications between the access point and the device.
Make sure that all devices connected to the AP 420 ww/na are config-
ured to auto negotiate, or are configured to connect at half duplex (all
hubs are configured this way, for example).
■Faulty or loose cables. Look for loose or obviously faulty connections.
If they appear to be OK, make sure the connections are snug. If that does
not correct the problem, try a different cable.
■Non-standard cables. Non-standard and miswired cables may cause
network collisions and other network problems, and can seriously impair
network performance. Use a new correctly-wired cable or compare your
cable to the cable in appendix B, “Access Point Port and Network Cables”
for pinouts and correct cable wiring. A category 5 cable tester is a
recommended tool for every 100Base-TX network installation.
■Improper Network Topologies. It is important to make sure you have
a valid network topology. Common topology faults include excessive
cable length and excessive repeater delays between end nodes. If you have
network problems after recent changes to the network, change back to
the previous topology. If you no longer experience the problems, the new
topology is probably at fault. Sample topologies are shown at the end of
chapter 2 in this book, and some topology configuration guidelines can
be found online at the HP Procurve web site, http://www.hp.com/go/
hpprocurve.
■Mobile users cannot connect to the network. Make sure that the
access point and wireless clients are configured to the same WEP setting,
SSID, and authentication algorithm. Check to ensure that the wireless
client is within the maximum range supported by the access point. Also
verify that the wireless client has been configured with an IP address
compatible with the attached network, either manually or via DHCP.
For more information on possible network problems and their solutions, refer
to the technical note “Troubleshooting LAN Performance and Intermittent
Connectivity Problems”, which can be found on the HP Procurve web site,
http://www.hp.com/go/hpprocurve, in the Information Library section.
4-3
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
Diagnosing with the LEDs
Table 4-1 shows LED patterns on the access point that indicate problem
conditions.
1. Check in the table for the LED pattern that you see on your access point.
2. Refer to the corresponding diagnostic tip on the next few pages.
Table 4-1. LED Error Indicators
Diagnostic Tips:
LED Pattern Indicating Problems
Diagnostic
Tips
Power Wireless LED 10/100-T LED
Off with power cord plugged in * * 1
Off without power cord plugged in,
but linked to a PoE source **
2
Prolonged Blinking†3
On Off * 4
On * Off with cable
connected 5
On * On, but the port is not
communicating 6
* This LED is not important for the diagnosis.
†The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
Tip Problem Solution
1The access point
is not plugged
into an active AC
power source, or
the access
point’s power
supply may have
failed.
1. Verify that the power cord is plugged into an active power source and to the access
point. Make sure these connections are snug.
2. Try power cycling the access point by unplugging and plugging the power cord back in.
3. If the Power LED is still not on, verify that the AC power source works by plugging
another device into the outlet. Or try plugging the access point into a different outlet
or try a different power cord.
If the power source and power cord are OK and this condition persists, the access point’s
power supply may have failed. Call your HP-authorized LAN dealer, or use the electronic
support services from HP to get assistance. See the Customer Support/Warranty booklet
for more information.
4-4
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
2The access point
is not receiving
power from the
PoE source.
1. Verify that access point’s 10/100Base-T port is attached to a PoE source device.
2. Verify that the PoE source device is powered on, and that the PoE function has been
administratively enabled on the source port attached to the access point.
3. Refer to Tip 6 to verify that the network cable is functioning properly.
3The access point
has experienced
a software
failure during self
test.
1. Try resetting the access point by pressing the Reset button on the back of the access
point, or by power cycling the access point.
2. If the fault indication reoccurs, attach a console to the access point (as indicated in
chapter 2). Then, reset the access point. Messages should appear on the console
screen and in the console log identifying the error condition. You can view the console
log at that point by using the show logging commands.
If necessary to resolve the problem, contact your HP-authorized LAN dealer, or use the
electronic support services from HP to get assistance. See the Customer Support/
Warranty booklet for more information.
4Wireless link has
been
administratively
disabled.
Verify that the wireless port has not been disabled through a access point configuration
change. You can use the console interface, or, if you have configured an IP address on
the access point, use the web browser interface to determine the state of the wireless
port and re-enable the port if necessary.
5The
10/100Base-T
network
connection is not
working
properly.
Try the following procedures:
• Verify that both ends of the cabling, at the access point and the connected device, are
connected properly.
• Verify the connected device and access point are both powered on and operating
correctly.
• If the other procedures don’t resolve the problem, try using a different cable.
6The port may be
improperly
configured.
VLAN configuration may affect the port operation. Use the access point’s console to see
how the port is configured for VLANs.
For software troubleshooting tips, see the chapter “Troubleshooting” in the Management
and Configuration Guide, which is on the Documentation CD-ROM that came with your
access point.
Make sure also, that the device at the other end of the connection is indicating a good
link to the access point. If it is not, the problem may be with the cabling between the
devices or the connectors on the cable.
Tip Problem Solution
4-5
Troubleshooting
Proactive Networking
Troubleshooting
Proactive Networking
The following interfaces provide tests, indicators, and an event log that can
be used to monitor the access point and its network connections and to help
you take advantage of these proactive networking features:
■A graphical web browser interface that you can use to manage your access
point from a PC running a supported web browser, for example Microsoft
Internet Explorer.
■A full-featured easy-to-use console interface that you can access by
connecting a standard terminal or PC running a terminal emulator to the
access point’s console port. The cable to make that connection is provided
with your access point. The console interface is also accessible through
a Telnet connection.
For more information on using these software tools to diagnose and manage
your access point, see the “Troubleshooting” chapter in the Management and
Configuration Guide, which is on the Documentation CD-ROM that came
with your access point.
4-6
Troubleshooting
Hardware Diagnostic Tests
Troubleshooting
Hardware Diagnostic Tests
Testing the Access Point by Resetting It
If you believe that the access point is not operating correctly, you can reset
the access point to test its circuitry and operating code. To reset an access
point, either
■Unplug and plug in the power cord (power cycling)
■Press the Reset button on the back of the switch
Power cycling the access point and pressing the Reset button both cause the
access point to perform its power-on self test, which almost always will
resolve any temporary operational problems. These reset processes also
cause any network traffic counters to be reset to zero, and cause the System
Up Time timer to reset to zero.
Checking the Access Point’s LEDs
The self test passes if the Power LED on the front of the access point stops
blinking after approximately 50 seconds. If this LED continues blinking longer
than 60 seconds or goes off, there may be a problem with the access point.
See “Diagnosing with the LEDs” on page 4-3 for information on interpreting
the LED patterns.
Checking Console Messages
Useful diagnostic messages may be displayed on the console screen when the
access point is reset. As described in chapter 2 under step 7, “Connect a
console to the access point”, connect a PC running a VT-100 terminal emulator
program or a standard VT-100 terminal to the access point’s Console Port and
configure it to run at 9600 baud, and with the other terminal communication
settings shown on page 2-11. Then, when you reset the access point, note the
messages that are displayed. Additionally, you can check the access point’s
event log, which can be accessed from the console using the show logging
commands.
4-7
Troubleshooting
Hardware Diagnostic Tests
Troubleshooting
Testing Twisted-Pair Cabling
Network cables that fail to provide a link or provide an unreliable link between
the access point and the connected network device may not be compatible
with the IEEE 802.3 Type 10Base-T, or 100Base-TX standards. The twisted-pair
cables attached to the Access Point 420wl must be compatible with the appro-
priate standards. To verify that your cable is compatible with these standards,
use a qualified cable test device.
Testing Access Point-to-Device Network
Communications
You can perform the following communication tests to verify that the network
is operating correctly between the access point and any connected device that
can respond correctly to the communication test.
■Link Test -- a physical layer test that sends IEEE 802.2 test packets to any
device identified by its MAC address
■Ping Test -- a network layer test used on IP networks that sends test
packets to any device identified by its IP address
These tests can be performed through the access point’s console interface
from a terminal connected to the access point or through a Telnet connection.
For more information, see the Management and Configuration Guide, which
is on the Documentation CD-ROM that came with your access point.
These tests can also be performed from an SNMP network management
station running a program that can manage the access point.
Testing End-to-End Network Communications
Both the access point and the cabling can be tested by running an end-to-end
communications test -- a test that sends known data from one network device
to another through the access point. For example, if you have two PCs on the
network between which you can run a Ping test through the access point, you
can use this test to verify that the entire communication path between the two
PCs is functioning correctly.
4-8
Troubleshooting
Restoring the Factory Default Configuration
Troubleshooting
Restoring the Factory Default
Configuration
As part of your troubleshooting process on the Access Point 420wl, it may
become necessary to return the access point’s configuration to the factory
default settings. This process momentarily interrupts the access point’s oper-
ation, clears any passwords, clears the console event log, resets the network
counters to zero, performs a complete self test, and reboots the access point
into its factory default configuration including deleting the IP address, if one
is configured.
Note This process removes all access point configuration changes that you have
made from the factory default settings. This includes, for example, IP address,
and radio interface settings. Returning the configuration of these features to
their factory default settings may result in network connectivity issues.
If the access point has a valid configuration, and you are restoring the factory
default settings for a reason other than configuration problems, you should
save the access point configuration prior to performing the factory default
reset. Then, after the reset and resolution of the original problem, you can
restore the saved configuration to the access point. For both the save and
restore processes, you can use the console copy command. For more informa-
tion on this command, see the Management and Configuration Guide, which
is on the Documentation CD-ROM that came with your access point.
You can restore the factory default configuration either on the access point
itself, or through the access point console.
To execute the factory default reset on the access point, perform these steps:
1. Using a pointed object, press the Reset buttons on the back of the access
point.
2. When the Power LED begins to blink, release the Reset button.
The access point will then complete its self test and begin operating with
its configuration restored to the factory default settings.
To restore the factory default configuration using the console, execute the
delete config command from the console command prompt.
4-9
Troubleshooting
Downloading New Access Point Software
Troubleshooting
Downloading New Access Point
Software
When product enhancements occur for the AP 420 ww/na, new software
can be downloaded to the access point through several methods, for product
enhancements and new features. For more information, see the Management
and Configuration Guide, which is on the Documentation CD-ROM that came
with your access point.
The new access point software would be available on the HP Procurve web
site, http://www.hp.com/go/hpprocurve.
HP Customer Support Services
If you are still having trouble with your access point, Hewlett-Packard offers
support 24 hours a day, seven days a week through the use of a number of
automated electronic services. See the Customer Support/Warranty booklet
that came with your access point for information on how to use these services
to get technical support. The HP Procurve web site, http://www.hp.com/go/
hpprocurve also provides up-to-date support information.
Additionally, your HP-authorized network reseller can provide you with assis-
tance, both with services that they offer and with services offered by HP.
Before Calling Support
Before calling your networking dealer or HP Support, to make the support
process most efficient, you first should have retrieved the following informa-
tion:
Information Item Information Location
• product identification the front of the access point,
AP 420 na (HP J8130A)
• details about the access point’s status
including the software (OS) version, a
copy of the access point configuration,
a copy of the access point Event Log,
and a copy of the access point status
and counters information
access point console: show version, and
show logging command
4-10
Troubleshooting
HP Customer Support Services
Troubleshooting
• copy of your network topology map, in-
cluding network addresses assigned to
the relevant devices
your network records
Information Item Information Location
A-1
Specifications
A
Specifications
Physical
Electrical
Note: Power can also be provided to the access point through the Ethernet
port based on IEEE 802.3af Power over Ethernet (PoE) specifications. When
both PoE is provided and the adapter is plugged in, PoE will be turned off.
Environmental
Width: 21.832 cm (8.595 in)
Depth: 13.727 cm (5.404 in)
Height: 3.27 cm (1.287 in)
Weight: 0.8 kg (1.762 lbs)
Adapter:
AC voltage: 100-240 volts, 0.4A, 50/60 Hz
DC voltage: 3.3 volts, 4A
Power consumption: 13.2 watts
PoE (DC)
Input voltage: 48 volts, 0.27A, 12.96 watts
Operating Non-Operating
Temperature: 0°C to 55°C (32°F to 131°F) -40°C to 70°C (-40°F to 158°F)
Relative humidity:
(non-condensing) 15% to 95% at 40°C (104°F) 90% maximum at 65°C (149°F)
Maximum altitude: 4.6 Km (15,000 ft) 4.6 Km (15,000 ft)
A-2
Specifications
Specifications
Acoustic ?
Geraeuschemission LwA=48 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19
Noise Emission LwA=48 dB at virtual workspace according to DIN 45635 T.19
Connectors
■The 10/100 Mbps RJ-45 twisted-pair port is compatible with the
IEEE 802.3u 100Base-TX and IEEE 802.3 Type 10Base-T standards.
Note: To provide Power over Ethernet to the access point, all 4 pairs of
wires must be connected for any network cable attached to this port
Safety
Complies with:
■LVD/EN 60950
EMC Compliance (Class B)
Complies with:
■FCC Part 15.107
■ICES-003 (Canada)
■VCCI
Radio Signal Certification
Complies with:
■FCC Part 15.247 (2.4GHz)
■RSS-210 (Canada)
■EN 300.328
■MPT RCR std.33 (D33 1~13 Channel, T66 Channel 14)
Immunity
■EN 301.489-1
■EN 301.489-17
A-3
Specifications
Specifications
Wireless
Transmit Power
Radio Standard: IEEE 802.11b/g
Radio Technology: Direct Sequence Spread Spectrum (DSSS),
Orthogonal Frequency Division Multiplexing (OFDM)
Data Rate: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, 54 Mbps per channel
Operating Frequency: 2.4 ~ 2.4835 GHz (US, Canada, ETSI)
2.4 ~ 2.497 GHz (Japan)
Maximum Channels: FCC/IC: 1-11, ETSI: 1-13, MKK: 1-14
Modulation Type: BPSK, QPSK, 16QAM, 64QAM / OFDM, BPSK, QPSK, CCK / DSSS
Media Access Protocol: CSMA/CA with ACK
Operating Range: Up to 350 m (1148 ft)
Output Power 20(dBm)
A-4
Specifications
Specifications
B-1
Access Point Port and
Network Cables
B
Access Point Port and Network Cables
This appendix includes access point connector information and network
cable information for cables that should be used with the AP 420 ww/na,
including minimum pin-out information and specifications for twisted-pair
cables.
Note Incorrectly wired cabling is the most common cause of problems for LAN
communications. HP recommends that you work with a qualified LAN cable
installer for assistance with your cabling requirements.
Access Point Ports
The fixed RJ-45 10/100Base-TX port on the access point accepts 100-ohm
unshielded and shielded twisted-pair cable with RJ-45 connectors as
described on the next page.
Twisted-Pair Cables
10 Mbps Operation Category 3, 4, or 5 100-ohm unshielded twisted-pair (UTP)
or shielded twisted-pair (STP) cable, complying with IEEE
802.3 Type 10Base-T specifications, fitted with RJ-45
connectors
100 Mbps Operation Category 5 100-ohm UTP or STP cable, complying with
IEEE 802.3u 100Base-TX specifications, fitted with RJ-45
connectors
B-2
Access Point Port and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
Access Point Port and
Network Cables
Twisted-Pair Cable/Connector Pin-Outs
The access point includes one 10/100Base-TX port. 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 interconnec-
tion device such as 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 to the switch.
Other Wiring Rules:
■All twisted-pair wires used for 10 Mbps, and 100 Mbps operation must be
twisted through the entire length of the cable. The wiring sequence must
conform to EIA/TIA 568-B (not USOC). See “Twisted-Pair Cable Pin
Assignments” later in this appendix for a listing of the signals used on each
pin.
■For 10 Mbps connections to the ports, you can use Category 3, 4, or 5
unshielded twisted-pair cable, as supported by the IEEE 802.3 Type
10Base-T standard.
■For 100 Mbps connections to the ports, use 100-ohm Category 5 UTP or
STP cable only, as supported by the IEEE 802.3u Type 100Base-TX stan-
dard.
■To provide Power over Ethernet to the access point, all 4 pairs must be
connected for any network cable attached to this port.
B-3
Access Point Port and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
Access Point Port and
Network Cables
Straight-Through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections
Because the 10/100 port on the access point uses an MDI pin configuration,
you must use “straight-through” cable for network connections to hubs or
switches that only have MDI-X ports. However, if the device to which you are
connecting supports auto-MDIX operation, you can use either “straight-
through” or “crossover” cable.
Cable Diagram
Note Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2
on connector “B”.
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6
on connector “B”.
Pins 4, 5, 7, and 8 are not used for transmitting or receiving data, although they
must be wired straight-through in the cable to support Power over Ethernet.
.Pin Assignments
Access Point End (MDI) Hub or Switch Port, or Other
MDI-X Port End
Signal Pins Pins Signal
receive +
receive -
transmit +
transmit -
1
2
3
6
1
2
3
6
transmit +
transmit -
receive +
receive -
B-4
Access Point Port and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
Access Point Port and
Network Cables
Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection
Because the 10/100 port on the access point uses an MDI pin configuration,
you must use “crossover” cable for network connections to PCs, servers or
other end nodes that only have MDI ports. However, if the device to which you
are connecting supports auto-MDIX operation, you can use either “straight-
through” or “crossover” cable.
Cable Diagram
Note Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 3 and 6
on connector “B”.
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 1 and 2
on connector “B”.
Pins 4, 5, 7, and 8 are not used for transmitting or receiving data, although they
must be wired straight-through in the cable to support Power over Ethernet.
.Pin Assignments
Access Point End (MDI) Computer, Transceiver, or
Other MDI Port End
Signal Pins Pins Signal
receive +
receive -
transmit +
transmit -
1
2
3
6
6
3
2
1
transmit -
transmit +
receive -
receive +
C-1
Safety and EMC Regulatory
Statements
C
Safety and EMC Regulatory Statements
Safety Information
Grounding
These are safety class I products and have protective earthing terminals. There
must be an uninterruptible safety earth ground from the main power source
to the product's input wiring terminals, power cord, or supplied power cord
set. Whenever it is likely that the protection has been impaired, disconnect
the power cord until the ground has been restored.
For LAN cable grounding:
■If your LAN covers an area served by more than one power distribu-
tion system, be sure their safety grounds are securely interconnected.
■LAN cables may occasionally be subject to hazardous transient volt-
ages (such as lightning or disturbances in the electrical utilities power
grid). Handle exposed metal components of the network with caution.
Servicing
There are no user-serviceable parts inside these products. Any servicing,
adjustment, maintenance, or repair must be performed only by service-trained
personnel.
These products do not have a power switch; they are powered on when the
power cord is plugged in.
Documentation reference symbol. If the product is marked with this
symbol, refer to the product documentation to get more information
about the product.
WARNING A WARNING in the manual denotes a hazard that can cause injury
or death.
CAUTION A CAUTION in the manual denotes a hazard that can damage
equipment.
Do not proceed beyond a WARNING or CAUTION notice until you
have understood the hazardous conditions and have taken appro-
priate steps.
!
C-2
Safety and EMC Regulatory Statements
Informations concernant la sécurité
Safety and EMC Regulatory
Statements
Informations concernant la sécurité
Cet appareil est un produit de classe I et possède une borne de mise à la terre. La source
d'alimentation principale doit être munie d'une prise de terre de sécurité installée aux
bornes du câblage d'entrée, sur le cordon d'alimentation ou le cordon de raccordement
fourni avec le produit. Lorsque cette protection semble avoir été endommagée,
débrancher le cordon d'alimentation jusqu'à ce que la mise à la terre ait été réparée.
Mise à la terre du câble de réseau local:
■si votre réseau local s'étend sur une zone desservie par plus d'un système de
distribution de puissance, assurez-vous que les prises de terre de sécurité
soient convenablement interconnectées.
■Les câbles de réseaux locaux peuvent occasionnellement être soumis à des
surtensions transitoires dangereuses (telles que la foudre ou des perturba-
tions dans le réseau d'alimentation public). Manipulez les composants
métalliques du réseau avec précautions.
Aucune pièce contenue à l'intérieur de ce produit ne peut être réparée par l'utilisateur.
Tout dépannage, réglage, entretien ou réparation devra être confié exclusivement à un
personnel qualifié.
Cet appareil ne comporte pas de commutateur principal ; la mise sous tension est
effectuée par branchement du cordon d'alimentation.
Symbole de référence à la documentation. Si le produit est marqué de
ce symbole, reportez-vous à la documentation du produit afin d'obtenir
des informations plus détaillées.
WARNING Dans la documentation, un WARNING indique un danger susceptible
d'entraîner des dommages corporels ou la mort.
CAUTION Un texte de mise en garde intitulé CAUTION indique un danger suscep-
tible de causer des dommages à l'équipement.
Ne continuez pas au-delà d'une rubrique WARNING ou CAUTION avant
d'avoir bien compris les conditions présentant un danger et pris les
mesures appropriées.
!
C-3
Safety and EMC Regulatory Statements
Hinweise zur Sicherheit
Safety and EMC Regulatory
Statements
Hinweise zur Sicherheit
Dies ist ein Gerät der Sicherheitsklasse I und verfügt über einen schützenden Erdung-
sterminal. Der Betrieb des Geräts erfordert eine ununterbrochene Sicherheitserdung
von der Hauptstromquelle zu den Geräteingabeterminals, den Netzkabeln oder dem
mit Strom belieferten Netzkabelsatz voraus. Sobald Grund zur Annahme besteht, daß
der Schutz beeinträchtigt worden ist, das Netzkabel aus der Wandsteckdose herausz-
iehen, bis die Erdung wiederhergestellt ist.
Für LAN-Kabelerdung:
■Wenn Ihr LAN ein Gebiet umfaßt, das von mehr als einem Stromverteilungs-
system beliefert wird, müssen Sie sich vergewissern, daß die
Sicherheitserdungen fest untereinander verbunden sind.
■LAN-Kabel können gelegentlich gefährlichen Übergangsspannungen aus-
gesetzt werden (beispielsweise durch Blitz oder Störungen in dem
Starkstromnetz des Elektrizitätswerks). Bei der Handhabung exponierter
Metallbestandteile des Netzwerkes Vorsicht walten lassen.
Dieses Gerät enthält innen keine durch den Benutzer zu wartenden Teile. Wartungs-,
Anpassungs-, Instandhaltungs- oder Reparaturarbeiten dürfen nur von geschultem
Bedienungspersonal durchgeführt werden.
Dieses Gerät hat keinen Netzschalter; es wird beim Anschließen des Netzkabels
eingeschaltet.
Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem
Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation
nach, um mehr Informationen über das Produkt zu erhalten.
WARNING Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die
Verletzungen oder sogar Todesfälle verursachen kann.
CAUTION CAUTION in der Dokumentation symbolisiert eine Gefahr, die dis
Gerät beschädigen kann.
Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort,
nachdem Sie den Gefahrenzustand verstanden und die entsprech-
enden Maßnahmen ergriffen haben.
!
C-4
Safety and EMC Regulatory Statements
Considerazioni sulla sicurezza
Safety and EMC Regulatory
Statements
Considerazioni sulla sicurezza
Questo prodotto è omologato nella classe di sicurezza I ed ha un terminale protettivo
di collegamento a terra. Dev'essere installato un collegamento a terra di sicurezza, non
interrompibile che vada dalla fonte d'alimentazione principale ai terminali d'entrata,
al cavo d'alimentazione oppure al set cavo d'alimentazione fornito con il prodotto.
Ogniqualvolta vi sia probabilità di danneggiamento della protezione, disinserite il cavo
d'alimentazione fino a quando il collegaento a terra non sia stato ripristinato.
Per la messa a terra dei cavi LAN:
■se la vostra LAN copre un'area servita da più di un sistema di distribuzione
elettrica, accertatevi che i collegamenti a terra di sicurezza siano ben collegati
fra loro;
■i cavi LAN possono occasionalmente andare soggetti a pericolose tensioni
transitorie (ad esempio, provocate da lampi o disturbi nella griglia d'alimen-
tazione della società elettrica); siate cauti nel toccare parti esposte in metallo
della rete.
Nessun componente di questo prodotto può essere riparato dall'utente. Qualsiasi
lavoro di riparazione, messa a punto, manutenzione o assistenza va effettuato esclusi-
vamente da personale specializzato.
Questo apparato non possiede un commutatore principale; si mette scotto tensione
all'inserirsi il cavo d'alimentazione.
Simbolo di riferimento alla documentazione. Se il prodotto è contras-
segnato da questo simbolo, fare riferimento alla documentazione sul
prodotto per ulteriori informazioni su di esso.
WARNING La dicitura WARNINGdenota un pericolo che può causare lesioni o
morte.
CAUTION La dicituraCAUTION denota un pericolo che può danneggiare le
attrezzature.
Non procedere oltre un avviso di WARNING o di CAUTIONprima di
aver compreso le condizioni di rischio e aver provveduto alle misure
del caso.
!
C-5
Safety and EMC Regulatory Statements
Consideraciones sobre seguridad
Safety and EMC Regulatory
Statements
Consideraciones sobre seguridad
Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por
una borna de puesta a tierra. Es preciso que exista una puesta a tierra continua desde
la toma de alimentación eléctrica hasta las bornas de los cables de entrada del aparato,
el cable de alimentación o el juego de cable de alimentación suministrado. Si existe la
probabilidad de que la protección a tierra haya sufrido desperfectos, desenchufar el
cable de alimentación hasta haberse subsanado el problema.
Puesta a tierra del cable de la red local (LAN):
■Si la LAN abarca un área cuyo suministro eléctrico proviene de más de una
red de distribución de electricidad, cerciorarse de que las puestas a tierra
estén conectadas entre sí de modo seguro.
■Es posible que los cables de la LAN se vean sometidos de vez en cuando a
voltajes momentáneos que entrañen peligro (rayos o alteraciones en la red
de energía eléctrica). Manejar con precaución los componentes de metal de
la LAN que estén al descubierto.
Este aparato no contiene pieza alguna susceptible de reparación por parte del usuario.
Todas las reparaciones, ajustes o servicio de mantenimiento debe realizarlos sola-
mente el técnico.
Este producto no tiene interruptor de potencia; se activa cuando se enchufa el cable
de alimentación.
Símbolo de referencia a la documentación. Si el producto va
marcado con este símbolo, consultar la documentación del
producto a fin de obtener mayor información sobre el producto.
WARNING Una WARNING en la documentación señala un riesgo que podría
resultar en lesiones o la muerte.
CAUTION Una CAUTION en la documentación señala un riesgo que podría
resultar en averías al equipo.
No proseguir después de un símbolo de WARNING o CAUTION hasta
no haber entendido las condiciones peligrosas y haber tomado las
medidas apropiadas.
!
C-6
Safety and EMC Regulatory Statements
Safety Information (Japan)
Safety and EMC Regulatory
Statements
Safety Information (Japan)
C-7
Safety and EMC Regulatory Statements
Safety Information (China)
Safety and EMC Regulatory
Statements
Safety Information (China)
C-8
Safety and EMC Regulatory Statements
EMC Regulatory Statements
Safety and EMC Regulatory
Statements
EMC Regulatory Statements
U.S.A.
FCC Class B
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with instruc-
tions, may cause harmful interference to radio communications. However,
there is no guarantee that the interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
■Reorient the receiving antenna
■Increase the separation between the equipment and receiver
■Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected
■Consult the dealer or an experienced radio/TV technician for help
FCC Caution: To assure continued compliance, (example - use only shielded
interface cables when connecting to a computer or peripheral devices). Any
changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
IMPORTANT NOTE:
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated
with a minimum distance of 20 centimeters (8 inches) between the radiator
and your body. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
C-9
Safety and EMC Regulatory Statements
EMC Regulatory Statements
Safety and EMC Regulatory
Statements
Canada
This digital apparatus does not exceed the Class B limits for radio noise
emissions from digital apparatus as set out in the interference-causing equip-
ment standard entitled “Digital Apparatus,” ICES-003 of the Department of
Communications.
Cet appareil numérique respecte les limites de bruits radioélectriques appli-
cables aux appareils numériques de Classe B prescrites dans la norme sur le
matériel brouilleur: “Appareils Numériques,” NMB-003 édictée par le
ministère des Communications.
C-10
Safety and EMC Regulatory Statements
EMC Regulatory Statements
Safety and EMC Regulatory
Statements
European Community
DECLARATION OF CONFORMITY
according to ISO/IEC Guide 22 and EN45014
Manufacturer's Name: Hewlett-Packard Company
Manufacturer's Address: 8000 Foothills Blvd
Roseville, CA 95747-5502
U.S.A.
declares that the product:
Product Name: HP Procurve Switch 2650
Model Number: J4899A
Accessories: J4858A, J4859A, J4860A
Regulatory Model Number: RSVLC-0204
conforms to the following Product Specifications:
Safety: EN60950 (1992) +A1,A2,A3,A4,A11 / IEC 950 (1991) +A1,A2,A3,A4
EN60825-1 (1994) +A11 (1996) / IEC 825-1 (1993), Class 1
EMC: EN 55022 (1998) / CISPR-22 (1997) Class A
EN55024 (1998) / CISPR-24 (1997)
EN 61000-3-2 (2000) / IEC 61000-3-2 (2000) Harmonics
EN 61000-3-3 (1995) / IEC 61000-3-3 (1994) Flicker
Supplementary Information:
The product herewith complies with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC and carries the CE marking accordingly.
Tested with Hewlett-Packard Co. products only.
Roseville, September 26, 2002
Mike Avery,
Regulatory Engineering Manager
European Contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department TRE,
Herrenberger Strasse 140, D-71034 Böblingen (FAX:+49-7031-14-3143).
Index – 1
Index
Index
Numerics
10/100Base-TX
connections, length limitations … 2-4
ports, cables used with … 2-4
10/100Base-TX port
location on access point … 1-5
10/100-T LED … 1-4
behaviors … 1-4
A
access point
connecting to a power source … 2-9
description … 1-1
downloading new software … 4-9
electrical specifications … A-1
emmissions specifications … A-2
environmental specifications … A-1
features … 1-8
included parts … 2-1
LED descriptions … 1-3
mounting on a wall … 2-7
mounting on horizontal surface … 2-9
physical specifications … A-1
top panel description … 1-3
access point operation
verifying after installation … 2-5
antennas
location on access point … 1-5
auto MDI/MDI-X operation … B-3
B
back of access point
10/100Base-TX port … 1-5
console port … 1-6
description … 1-5
lock … 1-5
network port … 1-6
power connector … 1-6
basic access point configuration
command line interface … 3-2
basic troubleshooting tips … 4-1
blinking LEDs
error indications … 4-3
buttons
Reset button … 1-7
C
cables
10/100Base-TX connections … 2-4
connecting cables to the access point
port … 2-10
effects of non-standard cables … 4-2
infrastructure requirements … 2-4
length limitations … 2-4
required types … 2-4
serial, for direct console connection … 2-12
cables, twisted pair
access point-to-computer connection … B-3
access point-to-switch or hub connection … B-4
category 3, 4, 5 … B-2
cross-over cable pin-out … B-4
MDI-X to MDI connections … B-3
MDI-X to MDI-X connections … B-4
pin-outs … B-3
straight-through cable pin-out … B-3
cables, twisted-pair
wiring rules … B-2
cables, twisted-pair connector pin-outs … B-2
cabling infrastructure … 2-4
CLI prompt, console
displaying … 2-12
command line interface
key command descriptions … 3-5
configuration
command line interface … 3-2
DHCP … 3-2
IP address, manually … 3-2
restoring factory defaults … 1-7, 4-8
connecting the access point to a power source … 2-9
connector specifications … A-2
2 – Index
Index
console
checking messages during
troubleshooting … 4-6
command line interface … 3-2
displaying the CLI prompt … 2-12
features … 2-11
how to connect in-band … 2-11
how to connect out-of-band … 2-11
serial cable connection … 2-12
Telnet access … 3-7
terminal configuration … 2-11
console port
location on access point … 1-5–1-6
cross-over cable
pin-out … B-4
D
DC power connector
location on back of access point … 1-5
description
access point … 1-1
back of access point … 1-5
LEDs … 1-3
top of access point … 1-3
DHCP
automatic access point configuration … 3-2
for in-band access … 2-11
diagnostic tests … 4-6
checking the console messages … 4-6
checking the LEDs … 4-6
end-to-end connectivity … 4-7
testing the access point only … 4-6
testing twisted-pair cabling … 4-7
downloading new access point software … 4-9
E
electrical specifications, access point … A-1
EMC regulatory statements … C-8
emmissions specifications, access point … A-2
environmental specifications, access point … A-1
F
factory default configuration, restoring … 1-7, 4-8
features
access point … 1-8
console … 2-11
front of access point
Reset button … 1-7
full-duplex fixed configuration
effects on network connections … 4-1
H
horizontal surface
mounting access point on … 2-9
I
in-band … 3-1
in-band console access
types of … 2-11
included parts … 2-1
installation
connecting the access point to a power
source … 2-9
horizontal surface mounting … 2-9
location considerations …2-4
network cable requirements … 2-4
precautions … 2-3
site preparation … 2-4
summary of steps … 2-2
wall mounting … 2-7
L
LEDs
10/100-T … 1-4
behavior during self test … 2-6
blinking definition … 1-4
checking during troubleshooting … 4-6
descriptions of … 1-3
error indications … 4-3
location on access point… 1-3
on access point … 1-3
Power … 1-3
behavior during self test … 2-6
Self Test
behavior during self test … 2-6
Wireless … 1-4
length limitations
10/100Base-TX connections … 2-4
Index – 3
Index
link test … 4-7
location for the access point, considerations … 2-4
locklocation on access point … 1-5
M
MDI-X to MDI network cable … B-3
MDI-X to MDI-X network cable … B-4
mounting the access point
on a horizontal surface … 2-9
on a wall … 2-7
precautions … 2-7
N
network cables
10/100Base-TX connections … 2-4
required types … 2-4
twisted-pair connector pin-outs … B-2
twisted-pair, wiring rules … B-2
network devices
connecting to the access point … 2-10
network ports
connecting to … 2-10
location on access point … 1-6
standards compliance … A-2
types of … 2-4
non-standard network cables, effects … 4-2
O
out-of-band console access … 3-7
P
parts, included with the access point … 2-1
passwords
deleting with the Reset button … 3-6
if you lose the password … 3-6
physical specifications, access point … A-1
Ping test … 4-7
pin-outs
twisted-pair cables … B-2
PoE power connector
location on back of access point … 1-5
port LEDs
normal operation … 2-6
ports
10/100Base-TX, location on access point … 1-5
connecting to … 2-10
console … 2-11
network connections … 2-10
power connector … 1-6
Power LED … 1-3
behavior during factory default reset … 4-8
behavior during self test … 2-6
behaviors … 1-3
location on access point… 1-3
power source
connecting the access point to … 2-9
precautions
mounting the access point … 2-3
power requirements … 2-3
preparing the installation site … 2-4
Proactive Network tools
diagnostics with … 4-5
R
regulatory statements … C-8
Reset button
description … 1-7
location on access point… 1-7
restoring factory default configuration … 1-7
to delete password protection … 3-6
resetting the access point
factory default reset … 4-8
location of Reset button … 1-7
troubleshooting procedure … 4-6
S
safety and regulatory statements … C-1
safety specifications … A-2
self test
LED behavior during … 2-6
Power LED behavior … 2-6
Self Test LED
behavior during self test … 2-6
serial cable
for direct console connection … 2-12
sides of access point
antennas … 1-5
4 – Index
Index
specifications
connectors … A-2
electrical … A-1
emmissions … A-2
environmental … A-1
physical … A-1
safety … A-2
wireless … A-3
straight-through cable
pin-out … B-3
summary
of access point installation … 2-2
of cables used with the access point … 2-4
T
Telnet access to the console … 3-7
terminal configuration … 2-11
testing
access point operation … 4-6
access point-to-device communications … 4-7
checking the console messages … 4-6
checking the LEDs … 4-6
diagnostic tests … 4-6
end-to-end communications … 4-7
link test … 4-7
Ping test … 4-7
twisted-pair cabling … 4-7
tips for troubleshooting … 4-1
top of access point … 1-3
description … 1-3
LEDs … 1-3
topologies
effects of improper topology … 4-2
samples of … 2-13
troubleshooting … 4-1
basic tips … 4-1
checking the console messages … 4-6
checking the LEDs … 4-6
common network problems … 4-1
connecting to fixed full-duplex devices … 4-1
diagnostic tests … 4-6
effects of improper topology … 4-2
effects of non-standard cables … 4-2
link test … 4-7
Ping test … 4-7
Proactive Network tools … 4-5
restoring factory default configuration … 4-8
testing connections to other devices … 4-7
testing end-to-end communications … 4-7
testing the access point … 4-6
testing the twisted-pair cables … 4-7
twisted-pair cable
access point-to-computer connection … B-3
access point-to-switch or hub connection … B-4
cross-over cable pin-out … B-4
pin-outs … B-2–B-3
straight-through cable pin-out … B-3
testing … 4-7
V
VT-100 terminal
serial cable connection for … 2-12
W
wallmounting access point on … 2-7
wireless infrastructure
topology with … 2-14
wireless infrastructure for roaming clients
topology with … 2-15
Wireless LED … 1-4
behaviors … 1-4
wireless specifications … A-3
wiring rules for twisted-pair cables … B-2