HP | 10-Base-T | Installation manual | HP 10-Base-T Installation Manual

HP ProCurve
10Base-T Hubs
Installation Guide
HP 10Base-T Hub 12
HP 10Base-T Hub 12M
HP Networking
HP 10Base-T Hub 24
HP 10Base-T Hub 24M
For world-wide support on all
HP Network Connectivity Products
visit our web site at:
http://www.hp.com/go/procurve
Less Work, More Network
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HP ProCurve 10Base-T Hubs
Installation Guide
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© Copyright 1998 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
5967-6861
June 1998
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.
Applicable Product
Hewlett-Packard assumes no responsibility for the use or
reliability of its software on equipment that is not furnished
by Hewlett-Packard.
HP ProCurve 10Base-T Hub 12 (J3300A)
HP ProCurve 10Base-T Hub 12M (J3301A)
HP ProCurve 10Base-T Hub 24 (J3302A)
HP ProCurve 10Base-T Hub 24M (J3303A)
Warranty
Trademark Credits
MS-DOS® and Microsoft® are U.S. registered trademarks of
Microsoft Corporation. Ethernet is a registered trademark of
Xerox Corporation.
See the warranty booklet and the registration form 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.
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HP ProCurve 10Base-T Hubs
HP ProCurve 10Base-T Hubs
The HP ProCurve 10Base-T Hubs are a family of multiport repeaters. With
these hubs, you can connect computers, printers, and servers together for file
sharing. These hubs are compliant with the IEEE 802.3 Type 10Base-T
standard and support both 802.3 and Ethernet networks. The HP ProCurve
10Base-T Hubs follow these two standards by providing these features:
■
lighting the hub’s port LED when it detects the connected device is
powered on and cable is good.
■
retransmitting data that did not successfully arrive at the destination
device (collision detection).
A sample hub from the family is shown here to indicate common features.
Front
View
AUI/
Xcvr
LED
Twisted Pair
port LEDs
AUI/Xcvr
Slot
MDI/MDI-X switch
for port 1.
Twisted-pair
ports
Power
LED
HP J3303A
Fault LED
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
Console
Port
Console
Reset
Clear
Reset
Button
Act
Col
Clear
Button
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
ProCurve 10Base-T Hub 24M
MDI-X
MDI
(out)
(In)
Activity
LED
Collision
LED
Rear
View
Power
Receptacle
110/220 VAC
Figure 1.
The HP ProCurve 10Base-T Hub 24M (J3303A): Front and Rear Views
iii
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HP ProCurve 10Base-T Hubs
The following illustrations show each of the four hubs in the HP ProCurve
10Base-T Hubs family.
2
3
4
5
6
8
9
10
11
12
Power
Act
Reset
Figure 2.
ProCurve 10Base-T Hub 12M
HP J3301A
Col
1
2
3
4
5
6
7
8
9
10
11
12
Console
Figure 3.
ProCurve 10Base-T Hub 24
HP J3302A
Reset
Act
Clear
Col
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
Act
Reset
Figure 4.
ProCurve 10Base-T Hub 24M
HP J3303A
21 22 23 24
Col
Console
Figure 5.
iv
4X
5X
6X
MDI
(out)
(In)
7X
8X
9X
10X
11X
12X
1
2X
3X
4X
5X
6X
7X
8X
9X
10X
11X
12X
Port 1 Only
MDI-X
MDI
(out)
(In)
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
MDI-X
MDI
(out)
(In)
The HP ProCurve 10Base-T Hub 24 (J3302A)
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
3X
The HP ProCurve 10Base-T Hub 12M (J3301A)
Power
Fault
MDI-X
10 Mbps Xcvr Port
Xcvr
Power
Fault
2X
The HP ProCurve 10Base-T Hub 12 (J3300A)
AUI/Xcvr Slot
Fault
1
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
1
7
Xcvr
AUI/Xcvr Slot
HP J3300A
Reset
Clear
Act
Col
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
ProCurve 10Base-T Hub 12
MDI-X
MDI
(out)
(In)
The HP ProCurve 10Base-T Hub 24M (J3303A)
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HP ProCurve 10Base-T Hubs
Features
The following tables detail information about features on the HP ProCurve
10Base-T Hubs.
Feature Description
The following table provides descriptive information about features on the HP
ProCurve 10Base-T Hubs.
Table 1.
HP ProCurve 10Base-T Hub Feature Descriptions
Feature Type
Feature Description
Network Connections • 12 or 24 twisted-pair ports to connect to end nodes or other
devices.
• An MDI/MDI-X (Media Dependent Interface) switch for Port 1
which allows you to connect either an end node (MDI-X position)
or to cascade a hub (MDI position) to the port, using a “straightthrough” twisted-pair cable in both cases. Port 1 has a factory
default of MDI-X, but can be toggled to an MDI state with the
adjacent push-button. All other ports are always MDI-X for
connection to computers and other end nodes through a twistedpair “straight-through” cable.
• An AUI/Xcvr slot for installing one of the HP Transceiver modules:
• HP Fiber-Optic Transceiver Module (HP J2606A) -- for 10Base-FL.
Allows you to connect your hub to a fiber-optic backbone.
• HP Twisted-Pair Transceiver Module (HP J2607A) -- for 10Base-T.
Adds another RJ-45 port for a total of 13 twisted-pair ports on the
J3300A and the J3301A hubs.
• HP ThinLAN Transceiver Module (HP J2608A)-- for 10Base2.
• HP AUI Port Module (HP J2609A) -- to attach external transceivers.
Easy-to-Use Design
• Hub Status LEDs showing power, activity, collisions, fault and Xcvr,
each providing quick, easy-to-read hub status information and
troubleshooting help.
• Port Status LEDs showing transceiver and port status, providing
quick, easy-to-read port status information and troubleshooting
help.
• Metal brackets (included with the hub) that can be easily attached
to the hub for mounting the hub in a standard 19-inch telco rack or
on a rack. Also, table and wall mounting is supported.
Standards-Based
Compatibility
•
IEEE 802.3 Type 10Base-T standard compatibility to support both
802.3 and Ethernet networks.
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HP ProCurve 10Base-T Hubs
Feature Type
Feature Description
• Advanced embedded SNMP agent code in both the HP J3301A
and HP J3303A, enabling these hubs to be managed remotely from
a network management station using SNMP over IP (using the
configured IP address). The agent code also provides HP EASE
(Embedded Advanced Sampling Environment), which samples
network data for enhanced diagnostics from a network
management station. Also, the hubs support the RMON MIB. The
HP J3301A and HP J3303A both can be managed in any of these
three ways:
– using a Simple Network Management Protocol application that
runs in Microsoft Windows and Unix (HP ASA).
– using a World Wide Web browser application that runs in
Netscape Navigator or Microsoft Internet Explorer (the
Browser Interface).
– using an ASCII Console Interface.
Reliable Operation
• A self-test for fault identification when the hub is powered on or
when it is reset. (The hub can be reset from a network
management station or by pressing the Reset button.)
Other Features
• Password setting capability on both the HP J3301A and HP
J3303A, enabling you to add and remove passwords, as needed,
for selective entry into the hub management environment.
Passwords can be set from a World Wide Web browser, a network
management station, through an ASCII Console session. If you
forget your password, and are locked out of the hub’s management
environment, you can remove the password by pressing the Clear
button.
• An RS-232 serial port on both the HP J3301A and HP J3303A that
provides out-of-band management access including:
– An ASCII console to configure, monitor, and troubleshoot the
hub.
– Variable baud rates on the hub’s out-of-band management RS232 port, and automatic sensing of the selected baud rate when
connecting to a terminal device.
– Full V.22bis modem line control for remote out-of-band
management access to the hub.
– Updatable firmware that enables enhancements to be
downloaded either from a computer attached to the out-ofband management port via Xmodem or over the network via
TFTP.
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HP ProCurve 10Base-T Hubs
Feature Comparison
The following table details what features are present on the managed and the
unmanaged hubs.
Table 2.
Feature Comparison Between Managed and Unmanaged Hubs
Feature
HP J3300A/HP J3302A
(Unmanaged)
HP J3301A/HP J3303A
(Managed)
IEEE 802.3 10Base-T ports
á
á
Transceiver Slot
á
á
MDI/MDI-X Selection Button
á
á
Rack Mounting Capability
á
á
Wall Mounting Capability
á
á
World Wide Web management
interface
á
HP EASE
á
SNMP
á
RMON -- 9 Groups
á
ASCII Console Management
á
Telnet Console Management
á
Modem Support
á
Out of Band Management for remote
console connection
á
Eavesdrop Prevention
á
Intruder Prevention
á
Backup Links
á
IP Configuration
á
Community Name Management
á
Alarms
á
MIB II
á
MAU Connectivity
á
á
á
Link Test
á
Ping Test
ThinLAN support
á
á
Fiber Optic support
á
á
á
Console Password Protection
Mounting Brackets for Rack
á
á
Transceiver Module Support
á
á
RS-232 download
á
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HP ProCurve 10Base-T Hubs
Factory Default Settings
The following table details the factory defaults for all of your hub settings.
Table 3.
Factory Default Settings on HP ProCurve 10Base-T Hubs
Feature
Port Status
MDI/MDI-X Port Status
Enabled
J3301A/J3303A
Enabled
MDI-X (Button not MDI-X (Button not
depressed)
depressed)
Power (when power cord is connected)
On
On
Port Counters
--
All 0
Enabled
Enabled
Link Beat detection
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J3300A/J3302A
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Contents
1 Installing the Hub
Installing Your Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1. Verify included parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2. Install the transceiver module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
3. Verify the hub operates correctly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
4. Mount the hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5
1-5
1-7
1-7
5. Connect the hub to your network . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Connecting Hubs Together . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Twisted-Pair Cascade Connections . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
ThinLAN Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Connecting the HP ProCurve 10Base-T Hubs to a Fiber-Optic Backbone
1-12
2 Troubleshooting
Troubleshooting Approaches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Interpreting LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Interpreting Hub Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Interpreting Port Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
LED Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Hub Maintenance Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing the Hub Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing a Password for the ASCII Console . . . . . . . . . . . . . . . . . .
Running Connectivity Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Obtaining Firmware Enhancements . . . . . . . . . . . . . . . . . . . . . . . .
2-6
2-6
2-6
2-7
2-8
ix
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A Specifications
B Cables and Connectors
Straight-Through
Twisted-Pair
Cable
for
Hub-to-Computer
Network
Connection
B-1
Twisted-Pair Straight-Through Cable . . . . . . . . . . . . . . . . . . . . . . B-3
Twisted-Pair Crossover Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
RS-232 Connector and Cable Pin-Outs . . . . . . . . . . . . . . . . . . . . . B-3
Minimum Cable Pinout for ASCII Console Connection . . . . . . . B-4
C Safety and Regulatory Statements
Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Power Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Informations concernant la sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Hinweise zur Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Considerazioni sulla sicurezza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Consideraciones sobre seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
Safety Information (Japanese) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Index
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1
This chapter describes how to install the hub. Topics in this chapter include
■
verifying included parts
■
installing the transceiver module
■
verifying the hub operates correctly
■
mounting the hub
■
connecting the hub to your network
■
connecting hubs together
1-1
Installing the Hub
Installing the Hub
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Installing the Hub
Installing Your Hub
Installing the Hub
Installing Your Hub
To install and configure your hub, you must complete six basic tasks. They are:
■
locating and verifying the necessary parts
■
installing a transceiver module
■
connecting the hub to a power source
■
mounting the hub
■
connecting the hub to your network
1. Verify included parts
Each HP ProCurve 10Base-T Hub has the following components shipped with it:
■
This manual. The HP J3301A and HP J3303A both come with the HP
ProCurve 10Base-T Hubs Management and Configuration guide
(5967-6862).
■
A power cord, one of the following:
Australia/New Zealand
Denmark
Europe
Israel
South Africa
Switzerland
United Kingdom
U.S./Canada/Mexico
■
(8120-6803)
(8120-6806)
(8120-6802)
(8120-6799)
(8120-6807)
(8120-6807)
(8120-6801)
(8120-6805)
accessory kit (5183-7210):
•
bumper feet (4)
•
bracket-to-rack screws 12-24 (7/16") (4)
•
bracket-to-hub screws M4 (5/16") (4)
•
mounting brackets for 44.55mm (1.75")-height hub (5183-1381)
2. Install the transceiver module
You may want to install the transceiver module and any external transceiver
you may want to attach to it before installing the hub. Transceiver modules
may require more lengthy protrusions created by the greater widths of the
different cables and connectors you may attach to a module (for example, an
1-2
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Installing the Hub
Installing Your Hub
Inspect your installation site and identify whether enough room will be
available for the installed transceiver to be connected. Then see the guide that
shipped with your external transceiver for installation instructions. For HP
external transceivers, see the HP Recessed Transceivers Installation Guide
(p/n 5962-0066) for specific instructions.
Your transceiver modules can be one of the following:
■
HP J2606A Fiber-Optic Transceiver Module
■
HP J2607A Twisted-Pair Transceiver Module
■
HP J2608A ThinLAN Transceiver Module
■
HP J2609A AUI Port Module
3. Verify the hub operates correctly
Before mounting the hub, connect it to a power source and verify that the hub
will operate correctly.
1.
Plug the power cord into the hub’s power cord receptacle and into an AC
power source.
Connect female end of included power cord
into male receptacle here and male end of
power cord to an alternating current power
source.
Notes
The hub does not have a power switch; it is powered on when the power cord
is plugged in.
1-3
Installing the Hub
external transceiver). Because of these widths, clearance in front of your hub
may be a factor in the placement of the device or stack that contains
protruding transceiver connectors, for example, a BNC connectors.
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Installing the Hub
Installing Your Hub
Installing the Hub
2.
Check the LEDs on the hub’s front panel. When the hub is powered on, it
performs a power-on self test. See the table below for the LED self test
time that occurs during the self test. Note the upper number is for the HP
J3300A/HP J3302A and the lower number is for the HP J3301A/HP J3303A.
Power LED on
indefinitely
Fault LED
5 seconds
10 seconds
Figure 1-1.
Xcvr LED on
indefinitely.
Activity LED
5 seconds
3 seconds
Port LEDs
5 seconds
10 seconds
Collision LED
5 seconds
3 seconds
Self Test times for LEDs.
If the hub passes self test, the LEDs behave as described in the following
table. If the LEDs behave in a different way, the hub may failed self test.
See the LED operation table in chapter 2, “Troubleshooting” for a
complete description of the LED behavior.
Table 1-1.
1-4
Self Test times for LEDs
LED
HP J3300A/HP J3302A
HP J3301A/HP J3303A
Port LEDs,
Fault,
5 seconds
10 seconds
Activity,
Collision
5 seconds
3 seconds
Xcvr
Stays on if module installed. Stays on if module installed.
Off if no module installed.
Off if no module installed.
Power
Stays On
Stays On
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Installing the Hub
Installing Your Hub
When the self test completes successfully, the LEDs go into their normal
operational states. If a hub hardware fault exists, the hub will not
complete self test. This will be indicated by an abnormal LED pattern,
such as all port LEDs staying lit indefinitely. Note that the normal
operational state could include indefinitely blinking LEDs in the event of
a detected intruder. For managed HP ProCurve 10Base-T Hubs, see your
HP ProCurve 10Base-T Hubs Management and Configuration guide for
more information on Intruder Detection and flashing LEDs associated
with it.
If the self test time range elapses and the Fault LED continues to stay on
instead of turning off, the hub may have an error condition. If repeating
the self test does not correct the problem and the Fault LED still stays
continuously on, contact your HP authorized reseller for replacement
information. After the hub has passed its self test, you are ready to mount
the hub. Unplug the hub and proceed to the next step.
4. Mount the hub
Before mounting the hub, unplug it. The HP ProCurve 10Base-T Hubs can
be mounted in three ways:
1.
in a rack or cabinet
2.
on the wall
3.
on a table
The hardware for mounting the hub is included in the accessory kit
(5064-2053) packed with the hub. See Appendix C, “Safety and Regulatory
Statements,” for general mounting precautions.
Rack or Cabinet Mounting
Warning
The rack or cabinet should be adequately secured to prevent it from
becoming unstable and/or falling over. Please see Appendix C, “Safety
and Regulatory Statements,” for precautions and warnings associated with
rack mounting.
1-5
Installing the Hub
Note that once you have connected cables to the hub, an AUI transceiver
LED or twisted pair Port LED stays on if link beat has been detected at
the port from an incoming device and the port is enabled. A Port LED turns
off if link beat is not detected.
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Installing the Hub
Installing Your Hub
Installing the Hub
1.
Using a Phillips Crosshead No. 2 screwdriver, attach the mounting
brackets to the hub with No. M4 (5/16") silver screws (included in the
accessory kit).
Figure 1-2. Hub-to-Bracket Assembly
1-6
2.
Position the hub in the rack or cabinet and slide it up or down until the
rack holes line up with the bracket holes.
3.
Then attach the bracket to the rack with the No. 12-24 (7/16") screws and
black nylon washers included in the accessory kit with a Phillips Crosshead No. 2 screwdriver. A flatblade screwdriver will also work in assembling the hub to the rack. Make sure you have screws that fit your cabinet
or rack before mounting the hub.
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Installing the Hub
Installing Your Hub
Installing the Hub
Figure 1-3. Hub-to-Rack Assembly
Wall Mounting
Using a Phillips (crosshead) No. 2 screwdriver, attach the mounting brackets
to the hub with 8-mm (approximately 5/16") M4 screws included in the
accessory kit. Then attach the hub to a wood surface (minimum 1/2-inch
plywood or equivalent) with No. 12 (5/8") wood screws with a Phillips Crosshead No. 2 screwdriver.
HP recommends that the bottom of the hub should be flush with the wall. The
brackets should be positioned at the front of the hub. The face of the hub
should be pointing up.
Note that the wood screws are not included in the accessory kit. Wood screws have
a pointed and for boring into the wood, unlike rack screws which are flat on the end.
Table Mounting
To place the hub on a table or other horizontal surface, no special tools are
necessary. Apply the four feet included in the accessory kit onto the bottom
of the hub. Be certain to pick a sturdy table in an uncluttered area. You may
want to secure the hub’s cables to the leg of the table to prevent people from
tripping over them.
1-7
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Installing the Hub
Installing Your Hub
5. Connect the hub to your network
Installing the Hub
Connect the hub to an AC power source. With the hub mounted, you are now
ready to connect the hub to your network. Typical hub connections are:
■
hub-to-device connections. Connecting to network devices such as
computers, and printers.
■
hub-to-hub and hub-to-switch connections. Connecting to another
Ethernet hub.
■
hub-to-network backbones. Connecting to a network backbone.
This section describes the different ways you can connect your hub to your
network.
To connect a device to the hub, using unshielded twisted-pair (UTP) cable,
push the RJ-45 plug at one end of the cable into the RJ-45 jack on the hub until
the tab on the plug clicks into place.
RJ-45
Connector
HP J3303A
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
Console
Reset
Clear
Act
Col
unshielded twisted-pair cable
Category 3, 4, or 5
Cat 3, 4 maximum distance: 100 meters
Cat 5 maximum distance: 150 meters
Figure 1-4. The RJ-45 Connector
1-8
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
ProCurve 10Base-T Hub 24M
MDI-X
MDI
(out)
(In)
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Installing the Hub
Installing Your Hub
Connecting Hubs Together
To expand your network, the hub can be connected to other hubs with straightthrough cable by using the Media Dependent Interface (MDI/MDI-X) switch.
The MDI/MDI-X switch controls how the signals are sent through the twistedpair cable connected to Port 1. The hub is shipped with the switch in the MDIX position. The switch has two positions:
■
In the MDI position, use Port 1 to connect your hub to another hub. In
this position, the hub reverses the Tx and Rx port pairs for you. This allows
you to use “straight-through” category 3 or 4 cable rather than “cross-over”
cable to connect two hubs together. The cable length can be up to 100
meters. Category 5 cable length can be up to 150 meters.
Be sure that only one of the two hubs is using an MDI port; the hub-todevice connection must always have MDI at one end (usually a transceiver), and MDI-X at the other end (usually a hub or switch), when
connecting the two with a straight-through cable.
■
In the MDI-X position, use Port 1 to connect your hub to a PC or similar
device using “straight-through” cable. In this position, the port is wired
the same as all other twisted-pair ports on the hub. Cable lengths for these
connections can be up to 100 meters.
MDI/MDI-X Switch
HP J3303A
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
Console
Reset
Clear
Act
Col
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
ProCurve 10Base-T Hub 24M
MDI-X
MDI
(out)
(In)
Figure 1-5. The MDI/MDI-X Switch
1-9
Installing the Hub
Twisted-Pair Cascade Connections
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Installing the Hub
Installing Your Hub
ProCurve 10Base-T Hub 24M
HP J3303A
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
Console
Reset
Act
Clear
Col
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
Installing the Hub
In the following illustration, the top hub in the stack is connected to two end
nodes and to a second hub. Note the second hub shows Port 1 connecting to
a PC, using a straight through twisted pair cable with the port in the MDI-X
position.
MDI-X
MDI
(out)
(In)
Hub attached to Port 1:
switch in MDI position and
straight-through cable used.
Straight-Through
Cable from Hub to PC
Up to 100 meters
HP J3303A
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
21 22 23 24
Power
Fault
Console
Reset
Clear
Act
Col
PC attached to Port 1: switch
in MDI-X position and
straight-through cable used.
1-10
Port 1 Only
10 Mbps Xcvr Port
AUI/Xcvr Slot
ProCurve 10Base-T Hub 24M
MDI-X
MDI
(out)
(In)
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Installing the Hub
Installing Your Hub
ThinLAN Connections
ProCurve 10Base-T Hub 24M
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Reset
Console
ThinLAN
Act
Clear
2X
3X
4X
5X
6X
13X
14X
7X
8X
9X
10X
11X
12X
19X
20X
21 22 23 24
Power
Fault
1
Port 1 Only
10 Mbps Xcvr Port
Xcvr
HP J3303A
Col
MDI-X
MDI
(out)
(In)
Figure 1-6. ThinLAN Connector
You can connect up to 30 hubs together on a common ThinLAN segment. The
ThinLAN segment can include a computer attached to a hub at one end of the
segment that can communicate with a computer attached to another hub at
the other end of the segment. By using the BNC port on the module, the
maximum repeater hop-count increment through the entire segment is only
two. The following illustration shows you how to connect three hubs together
from one ThinLAN port to another.
ThinLAN coax connecting hubs together.
HP J3303A
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
Fault
Console
Reset
Clear
Act
Hub 24M
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
21 22 23 24
Power
Col
ThinLAN
ProCurve 10Base-T Hub 24M
50-ohm terminator
MDI-X
MDI
(out)
(In)
Hub-16U
50-ohm
terminator
HP AdvanceStack 10Base-T Hub 24
Figure 1-7. 10Base-T Hub Stack Using ThinLAN Coax Connection
1-11
Installing the Hub
With an HP ThinLAN Transceiver Module for 10Base2 networks installed in
the transceiver slot, you can connect your hub or a stack of hubs to a 10Base2 ThinLAN network. The following illustration shows a hub with an HP
ThinLAN Transceiver.
,QVWDOOEN3DJH0RQGD\2FWREHU30
Note
Each ThinLAN cable segment must be terminated using a 50-ohm terminator
at each end. In the illustration above, a 50-ohm terminator is placed at each
end of the cable segment.
Connecting the HP ProCurve 10Base-T Hubs to a Fiber-Optic
Backbone
With a Fiber-Optic transceiver for 10Base-FL networks, you can connect your
hub to a fiber-optic backbone. The following illustration shows a hub with a
Fiber-Optic transceiver connected to a fiber-optic backbone:
Fiber-optic
cable to a
fiber-optic
backbone
HP J2606A Fiber-Optic
Transceiver Module installed in
the AUI/Xcvr Slot
1
2
3
4
5
6
13 14 15 16 17 18
7
8
9
10
11
12
19 20
Xcvr
Console
Reset
Clear
Act
Col
Rx
Fault
Tx
Power
1
2X
3X
4X
5X
6X
13X
14X
15X
16X
17X
18X
7X
8X
9X
10X
11X
12X
19X
20X
21X
22X
23X
24X
Port 1 Only
10 Mbps Xcvr Port
21 22 23 24
HP J2606A
HP J3303A
Fiber-Optic
ProCurve 10Base-T Hub 24M
Light
Status
Installing the Hub
Installing the Hub
Installing Your Hub
MDI-X
MDI
(out)
(In)
Figure 1-8. Fiber-Optic Backbone Connection
For more information about cabling configuration, see the documentation
accompanying the optional recessed transceivers. Also, see the Designing
HP ProCurve Networks (Part Number 5965-6578E) guide for information on
valid network topologies.
1-12
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2
Troubleshooting
This chapter describes ways to troubleshoot the hub. Topics covered are:
■
troubleshooting approaches
■
using a checklist to diagnose the hub
■
diagnosing with the LEDs
■
hub maintenance tasks
You can diagnose problems on all HP ProCurve 10Base-T Hubs by checking
the LEDs on the front of the hub as described in the section, “Diagnosing with
the LEDs” in this chapter. Note that information in this chapter is also covered
in chapter 7 of the HP ProCurve 10Base-T Hubs Management and Configuration guide.
You can diagnose hubs on the HP J3301A and HP J3303A, the managed hubs, by
■
By using the Browser Interface, a Web-based interface that provides a full
management environment.
■
By using the ASCII console’s diagnostic functions as described in the HP
ProCurve 10Base-T Hubs Management and Configuration guide.
■
By using the HP Top Tools and Switches or other SNMP management tool
as described in the online help in the management application.
2-1
Troubleshooting
Troubleshooting Approaches
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
Diagnosing with the LEDs
Use the following table to diagnose the problem with your HP ProCurve
10Base-T Hub.
Troubleshooting
Problem
How do I reset the hub?
None of the LEDs are on.
Solution
You can reset the hub three five different ways:
• From the device, remove the plug on the power
cord from the power source or the hub and
reconnect it.
• From the device, press the Reset Button.
• From the ASCII Console Interface, select either
the Reboot Hub option to preserve your settings
or select the Reset Hub to Factory Default option
to completely reset the hub’s factory defaults.
• From the Browser Interface, select the Factory
Reset Button.
• From HP Top Tools for Hubs and Switches,
perform a reset from the Reset Parameters
dialog box.
If this condition persists, see your LAN dealer.
Verify that the power cord is plugged into an active
power source and to the hub. Make sure these
connections are snug. Try power cycling the hub
by unplugging and plugging the hub back in.
If the Power LED is still not on, verify that the AC
source works by plugging another device into the
outlet. Or try plugging the hub into a different outlet
or try a different power cord.
If this condition persists, call your
HP-authorized LAN dealer or HP representative for
assistance.
I lost the password.
Press the Clear button for 10 seconds. See page
2-4 for more details.
IP configuration errors have been
Use the ASCII console’s IP Configuration function
reported.
as described in the HP ProCurve 10Base-T Hubs
Management and Configuration guide.
I want to see if each cable is connected Run Link Test in the ASCII Console Interface. See
correctly.
the HP ProCurve 10Base-T Hubs Management and
Configuration guide.
A user can’t send data to another user. Use the Ping or Link Test in the ASCII Console
Interface. See the HP ProCurve 10Base-T Hubs
Management and Configuration guide.
The Fault LED is on.
Remove the plug on the power cord from the power
source and reconnect it. If problem persists, the
device has an internal failure. Contact your HP
authorized dealer or reseller.
2-2
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
Most problems with the hub can be diagnosed using the LEDs on its front
panel. The following section describes the normal LED pattern during selftest, and LED patterns that indicate error conditions on the hub.
Interpreting LED Status
Two types of LEDs exist on the hub. They are:
■
Hub Status LEDs. These LEDs reflect certain conditions that exist on the
hub at large and are not explicitly referring to a given port.
■
Port Status LEDs. These LEDs reflect basic conditions (for example, Link
Beat being enabled) that exist on a specific port.
Status information for both are described in the following tables.
Troubleshooting
Interpreting Hub Status LEDs
The hub status LEDs indicate whether the hub is functioning properly.
LED
LED Color
Meaning of LED
Power
Green
On indicates the hub is receiving power.
Off indicates the hub is not receiving power.
Activity
Green
Flickering (rapid flashing) indicates a packet is
being transmitted to or from a port. Normally, the
LED appears to flicker. In heavy traffic, it may
appear on all the time.
Off indicates no packet is being transmitted to or
from a port.
Fault
Orange
On indicates an error has been detected on the
hub.
Off indicates no error has been detected on the
hub.
Port LED Flash on for.75 seconds and turn off
for.75 seconds, indicating the port is partitioned.
The Fault LED does NOT illuminate when ports are
partitioned.
Collision
Orange
On indicates a collision is detected. If it appears
on continuously (with no flicker), it is a possible
indicator of a network fault or an improperly
terminated cable.
Off indicates no collision has been detected.
2-3
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
Interpreting Port Status LEDs
The following table provides LED port information for the HP J3301A and the
HP J3303A.
LED
Twisted-pair
Ports
Color
Green
Meaning of LED
On indicates Link Beat is detected from the attached node and
the port is enabled on the HP J3301A and HP J3303A.
Off indicates the port is not receiving the link beat signal from
the attached node.
Troubleshooting
Slow Flash* indicates the port has been partitioned due to
excessive collisions. This port will reenable when the
connected device or cable is repaired.
XCVR
Port
Green
On indicates is enabled a transceiver module is installed.
Off indicates the Xcvr port is disabled.
Slow Flash indicates the port has been auto-partitioned.
* The slow flash is approximately once every 1.5 seconds (.75 seconds on and.75 seconds off).
The following table provides LED port information for the HP J3300A and the
HP J3302A.
LED
Twisted-pair
Ports
Color
Green
Meaning of LED
On indicates Link Beat is detected from the attached node.
Off indicates the port is not receiving the link beat signal from
the attached node.
Slow Flash* indicates the port has been partitioned. This port
has been auto-partitioned due to excessive collisions. This
port will reenable when the connected device or cable is
repaired.
XCVR
Port
Green
On indicates the a transceiver module is installed.
Off indicates the Xcvr port is disabled.
Slow Flash indicates the port has been auto-partitioned.
* The slow flash is approximately once every 1.5 seconds (.75 seconds on and.75 seconds off).
2-4
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
LED Operation
The tables on the following pages list the hub’s LEDs, their possible states,
and diagnostic tips to resolve any error conditions.
LED patterns indicating problems
Power
ON
Coll
*
Port LED
OFF
Diagnostic Tips
Fault
*
Check cabling on the indicated port all the way
out to the device attached to that port. Faulty
wiring or a bad connection could exist
somewhere in that connection.
The end node or hub attached to the port is off.
If Port 1, check the position of the
MDI/MDI-X switch. See the figure in chapter 1
that details the MDI/MDI-X switch.
ON
ON
*
*
Very frequent collisions are occurring, which
could indicate a network fault or improperly
terminated cable.
ON
*
Slow
Flash
Slow
Flash
The port has been auto-partitioned because of
an excessive collision condition. Check cable
connections and status of attached network
devices for causes of the excess collisions. The
hub will automatically recover after certain IEEE
802.3 criteria are successfully met.
ON
*
Fast
Flash
*
Network management security violation
occurred. See Port Security in Browser
Interface or ASCII Console Interface.
ON
*
*
ON
The hub has failed its self-test. Power-cycle the
hub. If this condition persists, call your HPauthorized LAN dealer or HP representative for
assistance.
*This LED is not important for the diagnosis.
2-5
Troubleshooting
The port may be disabled. Use the ASCII
console or management application to enable
the port.
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
Hub Maintenance Tasks
There are several hub maintenance tasks you can perform. They include:
■
■
■
testing the hub only
clearing a password from the ASCII console
running connectivity tests
Each of these tasks is described in the following sections.
Testing the Hub Only
If you believe that the hub is not operating correctly, you can test it to
determine normal operation in two ways:
Troubleshooting
■
■
pressing the Reset Button.
remove and reinsert the power cord for that hub.
This procedure will cause the hub to complete its power-on self-test. If any
error conditions exist in the hub, the LEDs should display the condition.
Clearing a Password for the ASCII Console
On the HP J3301A and HP J3303A, you can use the Clear button to clear a
forgotten console password that was previously configured on the hub. The
password is configured from the ASCII console. Note that the HP J3300A and
HP J3302A hubs do not have a Clear button because they do not have password
setting capability because they are unmanageable hubs.
Clear Button
Figure 2-1. Clearing a Password
To clear the password for the HP J3301A and the HP J3303A, follow these steps:
2-6
1.
Verify the hub has powered-up, passed power-on self test, and that the
Power LED is lit.
2.
Press the Clear button for 10 seconds.
,QVWDOOEN3DJH0RQGD\2FWREHU30
Troubleshooting
Running Connectivity Tests
Both the hub and 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 hub—such that you can verify that the data was correctly transmitted between the devices. Through both the ASCII Console Interface and
the Browser Interface, you can run the following hub-to-node connectivity
tests:
Link Test. A test of the link layer (MAC Address) connection between a local
device and a designated remote device.
Ping Test. A test of the network layer (IP Address) path between the managed
device and another device on an IP network that responds to IP packets.
Troubleshooting
PC sending
test packets
PC responding to
the test packets
Figure 2-2. Running a Connectivity Test
See your LAN adapter’s manual for information on running an end-to-end
communication test.
2-7
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Troubleshooting
Obtaining Firmware Enhancements
In the future, Hewlett-Packard may provide improvements to the HP ProCurve
10Base-T Hub 12M and the HP ProCurve 10Base-T Hub 24M through firmware
upgrades. The upgrade code can be downloaded from a PC attached to the hub’s
RS-232 port or over the network. The update procedures are described in
documents that come with the firmware enhancements. Also, some downloading instructions are covered in chapter 6 of the HP ProCurve 10Base-T
Hubs Management and Configuration guide.
Troubleshooting
You can determine the current firmware version on the hub from the ASCII
console. Look for the SNMP Agent EEPROM version number to determine the
revision. When you access the console, the version number appears. It is also
on the General System Information Screen under the Status and Counters
Menu and the Identity Window in the Browser Interface.
To obtain the latest agent firmware, use the download instructions on the
quick reference card included at the beginning of this manual.
Contact your HP-authorized LAN dealer or local HP sales office for the latest
on firmware enhancements.
2-8
,QVWDOOEN3DJH0RQGD\2FWREHU30
A
Specifications
Physical
Width:
42.5 cm (16.7 in)
Depth:
23.8 cm (9.4 in)
Height:
4.36 cm (1.7 in)
Weight :
8 lbs 13 oz. (8.8 lbs)
Electrical
The hub automatically adjusts to any voltage between 100-127 and 200-240
volts and either 50 or 60 Hz.
AC voltage:
100–127 volts
200–240 volts
Maximum current:
.5A max
0.3A max
Frequency range:
50/60 Hz
50/60 Hz
Environmental
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)
10% to 95% at 40°C (104°F)
10% to 90% at 65°C (149°F)
Maximum altitude:
4.6 Km (15,000 ft)
4.6 Km (15,000 ft)
A-1
Specifications
The maximum current ratings represent the current that could be drawn with
an external transceiver attached to the hub.
,QVWDOOEN3DJH0RQGD\2FWREHU30
Specifications
Connectors
The RJ-45 twisted-pair ports are compatible with the IEEE 802.3 Type
10Base-T standard.
Electromagnetic
Emissions:
FCC part 15 Class A
EN 55022 Class A
EN 55022 Class B
CISPR-22 Class A
VCCI Level I
Complies with Canadian EMC Class A requirements.
Specifications
Complies with Australia/New Zealand EMC Class A requirements.
A-2
Immunity:
See the Declaration of Conformity for details at the end of Appendix
C, “Safety and Regulatory Statements” in this guide.
Safety:
IEC950 (1991) + A1, A2/.EN60950 I (1992)+A1,A2
CSA950
NOM-019-SCFI-1993
UL1950
,QVWDOOEN3DJH0RQGD\2FWREHU30
B
Cables and Connectors
This appendix lists cables that have been tested and verified for use with the
HP ProCurve 10Base-T Hubs. The following topics are covered:
■
overview
■
twisted pair cable/connector pinouts
■
RS-232 connector and cable pinouts
It also includes minimum pin-out information so, if you wish to use an unlisted
cable, you can verify that the cables used in your installation are correctly
wired. Note that each pin-out does not necessarily match the pin-out for the
corresponding HP cable, but cables manufactured to follow the minimum pinout will function correctly.
Straight-Through Twisted-Pair Cable for Hub-to-Computer
Network Connection
To connect PCs or other network devices to the hub, use a “straight-through”
10Base-T cable. The twisted-pair wires must be twisted through the entire
length of the cable. The wiring sequence must conform to AT&T 258A (not
USOC). See the Twisted-Pair Cable Pin Assignments section at the end of this
chapter for a listing of the signals used on each pin.
Cables and Connectors
HP 10Base-T Hubs Installation Guide
B-1
,QVWDOOEN3DJH0RQGD\2FWREHU30
Note
Pins 1 and 2 must be a twisted pair.
Pins 3 and 6 must be a twisted pair.
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired
in the cable.
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.
Cables and Connectors
HP 10Base-T Hubs Installation Guide
B-2
,QVWDOOEN3DJH0RQGD\2FWREHU30
Twisted-Pair Straight-Through Cable
Hub End (MDI-X)
Signal
Computer or Transceiver End
(MDI)
Pins
Pins
1
2
3
6
1
2
3
6
(receive +)
(receive –)
(transmit +)
(transmit –)
Signal
(transmit +)
(transmit –)
(receive +)
(receive –)
Twisted-Pair Crossover Cable
Hub End (MDI-X)
Signal
Computer or Transceiver End
(MDI)
Pins
Pins
1
3
2
6
3
1
6
2
(receive +)
(receive –)
(transmit +)
(transmit –)
Signal
(transmit +)
(transmit –)
(receive +)
(receive –)
RS-232 Connector and Cable Pin-Outs
The RS-232 port connector on both the HP J3301A and the HP J3303A is wired
as depicted in the following table.
86
&&,77
',1
5[
'
7[
'
'75
6
*1'
'65
0
Use the RS-232 port to connect a PC to be used as the console. To make this
connection, you must use a null modem cable or you can use the minimum
cable pin-out described below.
HP 10Base-T Hubs Installation Guide
B-3
Cables and Connectors
3,1
,QVWDOOEN3DJH0RQGD\2FWREHU30
This appendix lists cables that have been tested and verified for use with the
HP ProCurve 10Base-T Hubs. It also includes minimum pin-out information
so, if you wish to use an unlisted cable, you can verify that the cables used in
your installation are correctly wired. Note that each pin-out does not necessarily match the pin-out for the corresponding HP cable, but cables manufactured to follow the minimum pin-out will function correctly.
Minimum Cable Pinout for ASCII Console Connection
PC end
9-pin male
Hub end
9-pin male
2
2
Rx
3
3
Tx
5
5
GND
Cables and Connectors
HP 10Base-T Hubs Installation Guide
B-4
,QVWDOOEN3DJH0RQGD\2FWREHU30
C
Safety and Regulatory
Statements
Safety and Regulatory Statements
This chapter covers the following topics:
■
mounting precautions
■
power precautions
■
safety statements
■
regulatory statements
■
Declaration of Conformity
Mounting Precautions
When you put a hub into a rack, follow these mounting precautions:
■
The rack or cabinet should be adequately secured to prevent it from
becoming unstable and/or falling over. The hub should be mounted in a
position toward the bottom of the rack for stability and to make it easier
to stack the other hubs on top.
■
Before mounting a hub, plan its location and orientation relative to other
devices and equipment. Also consider the cabling that will be attached to
the hub and the ports that will be used. Verify that there is room for the
grouped cables to trail out from the side of the hub. Allow at least 2.54 cm
(1 inch) in the front of the hub. In the back of the hub, allow at least 3.8
cm (1 1/2 inches) of space for the power cord.
■
Ensure that the HP ProCurve 10Base-T Hub does not overload the power
circuits, wiring, and over-current protection. To determine the possibility
of overloading the supply circuits, add together the amperage ratings from
the nameplates of all your hubs (and other equipment) installed on the
same circuits and compare the total with the rating limits for the supply
circuits.
■
Make sure that the power source circuits are properly grounded, then use
the supplied power cord to connect the HP ProCurve 10Base-T Hubs to
the circuit. See the Safety Statements in this chapter.
■
Do not block airflow around the sides and the back of the unit.
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Note
If your installation requires a different power cord than the one supplied with
the hub, be sure to use a power cord displaying the mark of the safety agency
that defines the regulations for power cords in your country. The mark is your
assurance that the power cord can be used safely with the hub.
Power Precautions
Follow these precautions when unplugging and plugging in power to the hub
as well as adding or removing transceiver modules.
Note
The hub does not have a power switch; it is powered on when the power cord
is plugged in. The hub’s power supply automatically adjusts to any AC power
source between 100-127 volts and 200-240 volts. There are no voltage range
settings to configure.
When installing the hub, note that the AC outlet must be installed near the
equipment and should be easily accessible.
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Safety and Regulatory
Statements
Do not install the hub in an environment where the operating ambient temperature might exceed 45°C (113°F).
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Safety and Regulatory Statements
Safety Information
!
Safety and Regulatory
Statements
Safety Information
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 appropriate steps.
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 distribution system, be sure their safety grounds are securely interconnected.
■
LAN cables may occasionally be subject to hazardous transient voltages (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.
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Safety and Regulatory Statements
Informations concernant la sécurité
Safety and Regulatory
Statements
Informations concernant la sécurité
!
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 susceptible 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.
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 perturbations 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.
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Safety and Regulatory Statements
Hinweise zur Sicherheit
!
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
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.
CAUTION
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.
Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort,
nachdem Sie den Gefahrenzustand verstanden und die entsprechenden Maßnahmen ergriffen haben.
Dies ist ein Gerät der Sicherheitsklasse I und verfügt über einen schützenden Erdungsterminal. 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 herausziehen, bis die Erdung wiederhergestellt ist.
Für LAN-Kabelerdung:
■
Wenn Ihr LAN ein Gebiet umfaßt, das von mehr als einem Stromverteilungssystem beliefert wird, müssen Sie sich vergewissern, daß die
Sicherheitserdungen fest untereinander verbunden sind.
■
LAN-Kabel können gelegentlich gefährlichen Übergangsspannungen ausgesetzt 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.
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Safety and Regulatory
Statements
Hinweise zur Sicherheit
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Safety and Regulatory Statements
Considerazioni sulla sicurezza
Safety and Regulatory
Statements
Considerazioni sulla sicurezza
!
Simbolo di riferimento alla documentazione. Se il prodotto è contrassegnato 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.
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'alimentazione 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 esclusivamente da personale specializzato.
Questo apparato non possiede un commutatore principale; si mette scotto tensione
all'inserirsi il cavo d'alimentazione.
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Safety and Regulatory Statements
Consideraciones sobre seguridad
!
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.
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 solamente el técnico.
Este producto no tiene interruptor de potencia; se activa cuando se enchufa el cable
de alimentación.
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Safety and Regulatory
Statements
Consideraciones sobre seguridad
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Safety and Regulatory Statements
Safety Information (Japanese)
Safety and Regulatory
Statements
Safety Information (Japanese)
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Safety and Regulatory Statements
Regulatory Statements
FCC Class A Statement (for U.S.A. Only) when using
unshielded cables:
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area may cause harmful interference in which case the user will be
required to correct the interference at his own expense.
If this equipment does cause 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 or relocate 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.
VCCI Class 1 (For Japan Only) when using unshielded cables
This equipment is in the Class A category information technology equipment
based on the rules of Voluntary Control Council For Interference by Information Technology Equipment (VCCI). When used in a residential area, radio
interference may be caused. In this case, user may be required to take
appropriate corrective actions.
Canada
This product complies with Class A Canadian EMC requirements when using
unshieleded cables and Class B EMC requirements.
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Safety and Regulatory
Statements
Regulatory Statements
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Safety and Regulatory Statements
Regulatory Statements
Safety and Regulatory
Statements
Korea
European Community
This equipment complies with ISO/IEC Guide 22 and EN55022 Class A with
unshielded cables and EN55022 NoteWith unshielded cables this is a Class A
product. In a domestic environment, this product may cause radio interfe
ence, in which case the user may be required to take adequate measures.
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Safety and Regulatory Statements
Regulatory Statements
Safety and Regulatory
Statements
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Index
Numerics
50-ohm terminator
for a ThinLAN cable segment … 1-12
front of the hub
status LEDs … 2-3
H
A
Activity LED … 1-4, 2-3, 2-6
AUI/Xcvr LED … 2-4
C
cabinet mounting
instructions for … 1-5
clearing a password … 2-6
Collision LED … 1-4, 2-4–2-5
connections
hub to hub networking … 1-9
network … 1-8
connector specifications … A-2
countries
power cords for … 1-2
D
diagnosing with the LEDs … 2-2
diagnostic tests
testing the hub only … 2-6
HP AdvanceStack SNMP Module
LED pattern during self-test … 2-5
hub
at a glance … iii
connecting to fiber-optic backbone … 1-12
description … iii
features … v
mounting … 1-5
reference … 2-3
troubleshooting … 2-1
hub operation
verifying … 1-3
hub to hub network connections
with the MDI switch … 1-9
I
IEEE 802.3 Type 10Base-T standard … iii
included parts … 1-2
installing the hub
mounting procedures … 1-5
network connections … 1-8
verifying hub operation … 1-3
IP packets, testing … 2-7
E
electrical specifications … A-1
electromagnetic specifications … A-2
environmental specifications … A-1
Ethernet networks … iii
external power supply … 1-2
F
Fault LED … 1-4, 2-3, 2-5
features
hub … v
fiber-optic backbone … 1-12
firmware enhancements … 2-8
L
LED pattern … 1-4
LEDs
AUI/Xcvr … 2-4
Collision … 2-4
diagnosing the hub status … 2-2
during self test … 1-4
patterns showing error conditions … 2-5
Power … 2-3
twisted-pair ports … 2-4
verifying hub operation … 1-4
Link Test … 2-7
Link Test, about … 2-7
Index – 1
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list
S
included parts … 1-2
N
Security LED … 1-4
Self Test … 2-5
Self test
LED pattern during … 1-4
specifications … A-1
connectors … A-2
electrical … A-1
electromagnetic … A-2
environmental … A-1
physical … A-1
status LEDs
description … 2-3
network connections … 1-8
hub to hub connections … 1-9
T
M
MDI switch
using … 1-9
MDI-X switch
using … 1-9
mounting the hub … 1-5
in a rack or cabinet … 1-5
O
out-of-band management
RS-232 port pin-out … B-3
P
parts list … 1-2
Password, clearing … 2-6
physical specifications of hubs … A-1
Ping Test, about … 2-7
pin-outs
minimum cable … B-4
Port LED … 2-4
Port LEDs … 1-5, 2-5
port LEDs
twisted-pair … 2-4
power cord
plugging into the hub … 1-3
plugging into the wall … 1-3
Power LED … 1-4, 2-3, 2-5
power-on … 1-4
procedures
network connections to the hub … 1-8
R
rack mounting … 1-5
instructions for … 1-5
resetting the hub
troubleshooting procedure … 2-6
RJ-45 jack … 1-8
2 – Index
table mounting … 1-6
terminator
for a thin LAN segment … 1-12
ThinLAN port
and 50-ohm terminator … 1-12
troubleshooting
approaches … 2-1
diagnosing with the LEDs … 2-2
LED patterns showing errors … 2-5
testing the hub … 2-6
twisted-pair cable
hub-to-computer connection … B-1
pin assignments … B-3
twisted-pair ports
LED description … 2-4
V
verifying hub operation … 1-3
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Technical information in this document
is subject to change without notice.
©Copyright Hewlett-Packard Company
1997-1998. All rights reserved. Reproduction,
adaptation, or translation without prior
written permission is prohibited except
as allowed under the copyright laws.
Printed in Singapore 6/98
Manual Part Number
5967-6861
*5967-6861*
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