ProCurve 2700 - Network switch HP - Free user manual and instructions

Product Type	Managed Network Switch
Model Numbers	HP ProCurve Switch 2708 (J4898A), HP ProCurve Switch 2724 (J4897A)
Ports	8 or 24 auto-sensing 10/100/1000Base-T RJ-45 ports with IEEE 802.3ab Auto MDI/MDI-X
Dimensions (W x D x H)	44.3 cm x 23.7 cm x 4.4 cm (17.4 in x 9.3 in x 1.7 in)
Weight	Switch 2708: 3.1 kg (6.8 lbs); Switch 2724: 3.5 kg (7.6 lbs)
Power Supply	100-240 VAC, 50/60 Hz, auto-adjusting; maximum current 1.5 A
Power Consumption	Not specified; typical for class A devices
Operating Temperature	0°C to 55°C (32°F to 131°F)
Operating Humidity	15% to 95% at 40°C (non-condensing)
Noise Level	LwA=48 dB (virtual workspace per DIN 45635 T.19)
Address Table Size	Switch 2708: 8,000 entries; Switch 2724: 32,000 entries
Auto MDI/MDI-X	All RJ-45 ports automatically detect and configure as MDI or MDI-X
Auto-Negotiation	Full-duplex and flow control auto-negotiation on all twisted-pair ports
Switching Method	Store-and-forward
LED Indicators	Power, Fault, Link (per port), Mode (per port with Activity/Full Duplex/Speed modes)
Reset Button	Front panel reset button to reboot switch and run self-test
Mounting Options	19-inch rack, cabinet, wall, or horizontal surface
Cooling Requirements	Airflow clearance: front 7.6 cm (3 in), back 7.6 cm (3 in), sides 3.8 cm (1.5 in)
Safety Compliance	EN60950, IEC 950, CSA 22.2 No. 950, UL 1950, NOM-019-SCFI-1994
EMC Compliance	FCC Class A, EN 55022 Class A, VCCI Class A
Spare Parts and Repairability	No user-serviceable parts; servicing by trained personnel only
Maintenance and Cleaning	Keep vents clear; disconnect power before cleaning; use dry cloth

Frequently Asked Questions - ProCurve 2700 HP

What are the differences between the HP ProCurve Switch 2708 and 2724?

The Switch 2708 has 8 auto-sensing 10/100/1000Base-T ports, while the Switch 2724 has 24 ports. Additionally, the Switch 2708 has an 8,000-entry address table, whereas the Switch 2724 has a 32,000-entry table.

What cabling should I use with this switch?

For 10/100/1000Base-T connections, use Category 5E or better twisted-pair cable. For 10 Mbps, Category 3 or higher is acceptable; for 100 Mbps, Category 5 or better; for 1000 Mbps, Category 5E or better. The switch supports both straight-through and crossover cables thanks to Auto MDI/MDI-X.

How do I mount the switch?

The switch can be mounted in a 19-inch rack or cabinet, on a wall, or on a horizontal surface. Use the included mounting brackets and screws for rack or wall mounting. For horizontal placement, attach the rubber feet to the bottom corners.

What do the LED indicators mean?

The Power LED is green when on. Fault LED orange indicates a hardware failure. Link LED per port is green when a connection is established. Mode LED per port shows activity, full duplex, or speed depending on the Mode selection (press the Mode button to cycle).

How do I reset the switch?

Press the Reset button on the front panel to reboot the switch and run the power-on self-test. Alternatively, unplug and reconnect the power cord.

What is Auto MDI/MDI-X?

Auto MDI/MDI-X automatically detects the cable type and configures the port as MDI or MDI-X accordingly. This allows you to use either straight-through or crossover cables, simplifying installation.

How does the switch learn MAC addresses?

The switch automatically learns MAC addresses from incoming packets and stores them in its address table. It uses this table to forward packets only to the correct port, filter local traffic, and flood unknown destinations.

What should I do if the Fault LED stays on?

If the Fault LED remains on for more than 10 seconds after power-on, the switch has failed its self-test. First, try power cycling the switch. If the problem persists, contact HP support or an authorized dealer.

Can I use this switch in a residential area?

The switch is a Class A device. In a residential area, it may cause radio interference. The user is responsible for correcting any interference at their own expense.

What are the environmental operating limits?

Operating temperature: 0°C to 55°C (32°F to 131°F). Operating humidity: 15% to 95% at 40°C non-condensing. Maximum altitude: 4.6 km (15,000 ft).

USER MANUAL ProCurve 2700 HP

hp procurve series 2700 switches

www.hp.com/go/hpprocurve

HP Procurve

Series 2700 Switches

© Copyright 2002 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

5990-3055

October 2002

Applicable Products

HP Procurve Switch 2708 (HP J4898A)

HP Procurve Switch 2724 (HP J4897A)

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 this product, please read the "Installation Precautions" in chapter 2, "Installing the Series 2700 Switches", and the safety statements in appendix C, "Safety and EMC Regulatory Statements".

Contents

1 Introducing the HP Procurve Series 2700 Switches

Front of the Switch 1-2

Network Ports 1-2

Reset Button 1-2

LEDs 1-3

Mode LED View Button and Indicator LEDs 1-4

Back of the Switch 1-5

Power Connector 1-5

Features 1-6

Switch Operation Overview 1-7

Address Table Operation 1-7

2 Installing the Series 2700 Switches

Included Parts 2-1

Installation Procedures 2-2

Summary 2-2

Installation Precautions: 2-3

1. Prepare the Installation Site 2-4

2. Verify the Switch Operates Correctly ..... 2-5

LED Behavior: 2-6

1. Mount the Switch 2-7

Rack or Cabinet Mounting 2-7

Wall Mounting....2-10

Horizontal Surface Mounting 2-12

1. Connect the Switch to a Power Source 2-12

2. Connect the Network Cables ..... 2-12

Using the RJ-45 Connectors 2-13

Example Network Topology 2-14

As a Desktop Switch 2-14

3 Troubleshooting

Basic Troubleshooting Tips 3-1

Diagnosing with the LEDs 3-3

Hardware Diagnostic Tests 3-4

Testing the Switch by Resetting It 3-4

Checking the Switch LEDs 3-4

Testing Twisted-Pair Cabling 3-5

Testing End-to-End Network Communications 3-5

HP Customer Support Services 3-5

A Specifications

Physical A-1

Electrical A-1

Environmental A-1

Acoustic A-1

Connectors.... A-2

Safety A-2

B Switch Ports and Network Cables

Switch Ports B-1

Twisted-Pair Cables B-1

Twisted-Pair Cable/Connector Pin-Outs B-3

Straight-Through Twisted-Pair Cable for

10 Mbps or 100 Mbps Network Connections.... B-4

Cable Diagram B-4

Pin Assignments B-4

Crossover Twisted-Pair Cable for

10 Mbps or 100 Mbps Network Connection .... B-5

Cable Diagram. B-5

Pin Assignments ...... B-5

Straight-Through Twisted-Pair Cable for

1000 Mbps Network Connections B-6

Cable Diagram B-6

Pin Assignments ...... B-6

C Safety and EMC Regulatory Statements

Safety Information C-1

EMC Regulatory Statements C-8

Index ...... Index-1

Introducing the HP Procurve Series 2700 Switches

The HP Procurve Series 2700 Switches are multiport switches that can be used to build high-performance switched workgroup networks. These switches are store-and-forward devices that offer low latency for high-speed networking.

HP Procurve Switch 2708 (HP J4898A)

HP Procurve Switch 2724 (HP J4897A)

Throughout this manual, these switches will be abbreviated as the Switch 2708 and the Switch 2724 respectively.

The Switch 2708 has 8 auto-sensing 10/100/1000Base-T RJ-45 ports. The Switch 2724 has 24 auto-sensing 10/100/1000Base-T RJ-45 ports.

These switches are designed to be used primarily to provide Gigabit/second network speed to the desktop. You can also directly connect servers and peripherals to these switches and connect them to a network backbone or to other switches, hubs, or routers.

This chapter describes your HP Series 2700 Switches including:

■Front and back of the switches
■Features
■Switch operation overview

Front of the Switch

All 10/100/1000Base-T RJ-45 ports have the IEEE 802.3ab "Auto MDI/MDI-X" feature

Network Ports

8 auto-sensing 10/100/1000Base-T RJ-45 ports

All these ports have the IEEE 802.3ab "Auto MDI/MDI-X" feature, which means that you can use either straight-through or crossover twisted-pair cables to connect any network devices to the switch.

Reset Button

This button is used to reset the switch while it is powered on. This action executes the switch self test.

LEDs

Table 1-1. Switch LEDs

Switch LEDs State Meaning
Power(green)	On The switch is receiving power.Off The switch is NOT receiving power.
Fault(orange)	Off The normal state; indicates that there are no fault conditions on the switch.On On briefly after the switch is powered on or reset, at the beginning of switch self test.If on for a prolonged time, the switch has a hardware failure, or has failed its self test.See chapter 3, “Troubleshooting” for more information.
Link(green – overlaid with the port number)	On Indicates the port is enabled and receiving a link indication from the connected device.Off One of these conditions exists:no active network cable is connected to the portthe port is not receiving a link signal
Mode(green)	Displays network activity information, or whether the port is configured for full-duplex operation, or the speed of the connection depending on the mode selected. See “Mode LED View Button and Indicator LEDs” on the next page for more information.
Mode LED View indicators(3 green LEDs)	Act Indicates that the port Mode LEDs are displaying network activity information.FDx Indicates that the port Mode LEDs are lit for ports that are in Full Duplex Mode.Spd Indicates that the port Mode LEDs are displaying the connection speed at which each port is operating:if the port Mode LED is off, the port is operating at 10 Mbpsif the port Mode LED is flashing*, the port is operating at 100 Mbpsif the port Mode LED is on continuously, the port is operating at 1000 Mbps
* The flashing behavior is a repeated 1.6 second cycle of two quick flashes followed by an off period.

Mode LED View Button and Indicator LEDs

To optimize the amount of information that can be displayed for each of the switch ports, the Series 2700 Switches use a Mode LED for each port. The operation of this LED is controlled by the Mode LED View button, and the current setting is indicated by the Mode indicator LEDs near the button. Press the button to change from one mode to the next.

graph TD
    A["Mode LED View button and indicator LEDs"] --> B["Spd mode: off = 10 Mbps"]
    A --> C["Mode LEDs (one per port)"]
    C --> D["Link 1"]
    D --> E["Node 1"]
    D --> F["Node 2"]
    D --> G["Node 2"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcc,stroke:#333

■If the Activity (Act) indicator LED is lit, the Mode LED for each port displays activity information for the port — it flickers as network traffic is received and transmitted through the port.
■If the Full Duplex (FDx) indicator LED is lit, the Mode LEDs light for those ports that are operating in full duplex.
■If the Speed (Spd) indicator LED is lit, the Mode LEDs behave as follows to indicate the connection speed for the port:

• Off = 10 Mbps
• Flashing = 100 Mbps (the flashing behavior is a repeated 1.6 sec. cycle of two quick flashes followed by an off period)
• On = 1000 Mbps

Back of the Switch

Power Connector

The Series 2700 Switches do not have a power switch; they are powered on when connected to an active AC power source. The switches automatically adjust to any voltage between 100--240 volts and either 50 or 60 Hz. There are no voltage range settings required.

Features

The features of the Series 2700 Switches include:

■8 or 24 auto-sensing 10/100/1000Base-T RJ-45 ports.
■plug-and-play networking — all ports are enabled — just connect the network cables to active network devices and your switched network is operational.
■IEEE 802.3ab “Auto MDI/MDI-X” on all twisted-pair ports, meaning that all connections can be made using straight-through twisted-pair cables. Cross-over cables are not required, although they will also work. Complying with the IEEE 802.3ab standard, the pin operation of each port is automatically adjusted for the attached device: if the switch detects that another switch or hub is connected to the port, it configures the port as MDI; if the switch detects that an end-node device is connected to the port, it configures the port as MDI-X.
■automatic learning of the hardware addresses in each switch's address forwarding table (the Switch 2708 has an 8000-entry table, the Switch 2724 has a 32,000-entry table).
■automatically negotiated full-duplex operation for the twisted-pair ports when connected to other auto-negotiating devices.
■auto-negotiation of flow control for ports operating at full duplex.

Switch Operation Overview

Address Table Operation

Address Learning. As devices are connected to the switch ports, either directly or through hubs or other switches that are connected to the switch, the MAC addresses of those devices are learned automatically and stored in the Series 2700 Switch's address table. The switch also identifies the number of the port on which each address is learned so it knows the relative network location of each device.

Forwarding, Filtering, Flooding. When the switch receives a packet, it determines the destination address, and looks for the address in the address table. Based on the port location of that address, the switch then determines whether to forward, filter-out, or flood the packet.

■ forward - if the destination address is on a different port than the one on which the packet was received, the packet is forwarded to the destination port and on to the destination device.
■ filter out - if the destination address is on the same port as the one on which the packet was received, the packet is filtered out. The switch thereby isolates local traffic so the rest of the network connected to the switch does not use bandwidth dealing with unnecessary traffic.
- flood - whenever a new destination address is found in a packet received on a port, the destination address will not yet be in the switch's address table and the Series 2700 Switch cannot know whether to forward or filter out the packet. In this case, it sends the packet to all the other switch ports. This is referred to as “flooding”. When the destination device receives the packet, it replies, and the switch learns the new address from the reply packet. Then, all future packets destined for that address are forwarded or filtered out appropriately.

Network Moves and Changes. When devices are moved in the network, and become connected to a different switch port, the Series 2700 Switch automatically recognizes the change and updates the address table with the new port location of the device. Communication with the device is automatically maintained, without any address table manipulation being required.

Installing the Series 2700 Switches

The HP Series 2700 Switches are easy to install. They come with an accessory kit that includes the brackets for mounting the switch in a standard 19-inch telco rack or an equipment cabinet, or on a wall, and with rubber feet that can be attached so the switch can be securely located on a horizontal surface. The brackets are designed to allow mounting the switch in a variety of orientations.

This chapter shows you how to install your Series 2700 Switches.

Included Parts

The Series 2700 Switches are shipped with the following components:

■ HP Procurve Series 2700 Switches Installation Guide (5990-3055), this manual
■Customer Support/Warranty booklet
■Accessory kit (5064-2085)

• two mounting brackets
• four 8 mm M4 screws to attach the mounting brackets to the switch
• four 5/8-inch number 12-24 screws to attach the switch to a rack
• four rubber feet

■Power cord, one of the following:

Australia/New Zealand 8120-6803

China 8120-8377

Continental Europe 8120-6802

Denmark 8120-6806

Japan 8120-6804

Switzerland 8120-6807

United Kingdom/Hong Kong/Singapore 8120-8709

United States/Canada/Mexico 8120-6805

Installation Procedures

Summary

Follow these easy steps to install your switch. The rest of this chapter provides details on these steps.

1. Prepare the installation site. Make sure that the physical environment into which you will be installing the switch is properly prepared including having the correct network cabling ready to connect to the switch, and having a good location for the switch. Please see page 2-3 for some installation precautions.
2. Verify that the switch passes its self test. This is a simple process of plugging the switch into a power source and observing that the LEDs on the switch's front panel show correct operation. See page 2-6.
3. Mount the switch. The Series 2700 Switches can be mounted in a 19-inch telco rack or equipment cabinet, on a wall, or on a horizontal surface.
4. Connect power to the switch. Once the switch is mounted, plug it in to the nearby AC power source.
5. Connect the network devices. Using the appropriate network cables, connect servers, hubs, other switches, routers, and other network devices to the switch ports.

At this point, the switch is fully installed and your network should be up and running. See the rest of this chapter if you need more detailed information on any of these installation steps.

Warnings

Installation Precautions:

Follow these precautions when installing your HP Series 2700 Switches.

Cautions

■ The rack or cabinet should be adequately secured to prevent it from becoming unstable and/or falling over.
Devices installed in a rack or cabinet should be mounted as low as possible, with the heaviest device at the bottom and progressively lighter devices installed above.
■For safe operation, do not install the switch with the back face of the switch (with the fan vents) facing either downward or upward.

■ Make sure that the power source circuits are properly grounded, then use the power cord supplied with the switch to connect it to the power source.

If your installation requires a different power cord than the one supplied with the switch, be sure the cord is adequately sized for the switch's current requirements. In addition, 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 switch.

■When installing the switch, note that the AC outlet should be near the switch and should be easily accessible in case the switch must be powered off.

■Ensure that the switch 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 switch 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 switch in an environment where the operating ambient temperature might exceed 55°C (131°F).

■Make sure the air flow around the sides and back of the switch is not restricted.

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, “Switch Ports and Network Cables” for more information:

Table 2-1. Summary of Cable Types to Use with the Switch

Cable Type Length Limits
• 10 Mbps operation:Category 3, 4, or 5, 100-ohm differential unshielded twisted-pair (UTP) or shielded twisted-pair (STP)	100 meters
• 100 Mbps operation:Category 5, 100-ohm differential UTP or STP	100 meters
• 1000 Mbps operation:Category 5E or better, 100-ohm differential UTP or STP	100 meters

Notes: Since the 10Base-T operation is through 10/100/1000Base-T 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. For 1000Base-T, category 5E, or better, cable should be used.

The 10/100/1000-Base-T ports on the Switch 2708 include the IEEE 802.3ab

"Auto MDI/MDI-X" feature. This feature allows you to use either straight-through or crossover twisted-pair cables for connecting to any network devices including end nodes, such as computers, or to other switches, hubs, and routers.

■ Installation Location - Before installing the switch, plan its location and orientation relative to other devices and equipment:

• At the front of the switch, leave at least 7.6 cm (3 inches) of space for the twisted-pair cabling.
• At the back of the switch, leave at least 7.6cm (3 inches) of space for the power cord and cooling.
• On the sides of the switch, leave at least 3.8 cm (1 1/2 inches) for cooling.

2. Verify the Switch Operates Correctly

Before mounting the switch in its network location, you should first check that it is working properly by plugging it into a power source and verifying that it passes its self test.

1. Connect the power cord supplied with the switch to the power connector on the back of the switch, and then into a nearby properly grounded electrical outlet.

Note The Series 2700 Switches do not have a power switch. They are powered on when the power cord is connected to the switch and to a power source. For safety, the power outlet should be located near the switch installation.

The switch automatically adjusts to any voltage between 100-240 volts and either 50 or 60 Hz. There are no voltage range settings required.

If your switch requires a different power cord than the one supplied with the switch, please see the Installation Precautions on page 2-3.

1. Check the LEDs on the switch. The LED behavior is described on the next page.

When the switch is powered on, it performs its diagnostic self test. The self test takes approximately 6 seconds to complete.

LED Behavior:

During the self test:

- All the switch and port LEDs are on.

When the self test completes successfully:

• The large Power LED remains on.

• The large Fault LED goes off.

• The Mode LED View Act LED remains on.

- The port LEDs (Link and Mode) go into their normal operational mode:

- If the ports are connected to active network devices, the Link LEDs stay on and the Mode LEDs behave according to the mode selected. In the default mode (Activity), the Mode LEDs should flicker showing network activity on the port.

- If the ports are not connected to active network devices, the Link and Mode LEDs will stay off.

If the LED display is different than what is described above, especially if the Fault LED stays on for more than 10 seconds, the self test has not completed correctly. Refer to chapter 3, "Troubleshooting" for diagnostic help.

3. Mount the Switch

After you have verified that the switch passes its self test, you are ready to mount the switch in a stable location. The Series 2700 Switches can be mounted in these ways:

■in a rack or cabinet
■on a wall
■on a horizontal surface

Rack or Cabinet Mounting

The Series 2700 Switches are designed to be mounted in any EIA-standard 19-inch telco rack or in an equipment cabinet such as a server cabinet. Note that the mounting brackets have multiple mounting holes and can be rotated allowing for a wide variety of mounting options.

Warning For safe operation, please read the Installation Precautions on page 2-3 before mounting the switch.

Equipment Cabinet Note

The 12-24 screws supplied with the switch are the correct threading for standard EIA/TIA open 19-inch racks. If you are installing the switch in an equipment cabinet such as a server cabinet, use the clips and screws that came with the cabinet in place of the 12-24 screws that are supplied with the switch.

Complete step 1, on the next page. Then, plan which four holes you will be using in the cabinet and install all four clips and partially install the two bottom screws, as described in step 2 on the next page. Then proceed to step 3.

1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting brackets to the switch with the included 8-mm M4 screws.

Note that the mounting brackets have multiple mounting holes and can be rotated allowing for a wide variety of mounting options. These include mounting the switch so that its front face is flush with the face of the rack, or mounting it in a more balanced position as shown in the illustration.

Note Steps 2, 3, and 4 below describe a convenient method of mounting the switch in a rack by placing it on two screws that you first install in the rack. You may, instead, just hold the switch with attached brackets up to the rack and move it vertically until rack holes line up with the bracket holes and notches, then insert and tighten the four screws holding the brackets to the rack.

1. Partially install a screw (5/8-inch number 12-24) into the top hole of a pair of holes that are 0.5 inches apart in each rack/cabinet upright as shown in the illustration below. Ensure that the screws are at the same level in each upright.

1. Place the switch in the rack and lower it so the notches in the bottom of the bracket slide onto the screws, then tighten these screws.

1. Install the other number 12-24 screw into the upper hole in each bracket. Tighten these screws.

Wall Mounting

You can mount the switch on a wall as shown in the illustrations on the next page.

Warning

For safe operation, do not install the switch with the back face of the switch (with the fan vents) facing either downward or upward.

Caution

The switch should be mounted only to a wall or wood surface that is at least 1/2-inch plywood or its equivalent.

1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting brackets to the switch with the included 8-mm M4 screws.
2. Attach the switch to the wall or wood surface with 5/8-inch number 12 wood screws (not included).

For "Bookshelf" Wall Mounting For "Flat" Wall Mounting

Switches
Installing the Series 2700

Horizontal Surface Mounting

Place the switch on a table or other horizontal surface. The switch comes with rubber feet in the accessory kit that can be used to help keep the switch from sliding on the surface.

Attach the rubber feet to the four corners on the bottom of the switch within the embossed angled lines. Use a sturdy surface in an uncluttered area. You may want to secure the networking cables and switch power cord to the table leg or other part of the surface structure to help prevent tripping over the cords.

Note

Make sure the air flow is not restricted around the sides and back of the switch.

4. Connect the Switch to a Power Source

1. Plug the included power cord into the switch's power connector and into a nearby AC power source.

2. Re-check the LEDs during self test. See "LED Behavior" on page 2-6.

5. Connect the Network Cables

Connect the network cables, described under “Cabling Infrastructure” (page 2-4), from the network devices or your patch panels to the RJ-45 ports on the switch.

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 switch and for the connected device, the Link LED for the port should light to confirm a powered-on device (for example, an end node) is at the other end of the cable.

If the Link LED does not go on when the network cable is connected to the port, see “Diagnosing with the LEDs” in chapter 3, “Troubleshooting”.

To disconnect:

Press the small tab on the plug and pull the plug out of the jack.

100-ohm unshielded or shielded twisted-pair cable:

• Category 3, 4, or 5 for 10 Mbps ports
- Category 5 or better for 100 Mbps ports
- Category 5E or better for 1000 Mbps ports

Maximum distance: 100 meters

Example Network Topology

This section shows you an example network topology in which the Series 2700 Switches are implemented. For more topology information, see the HP network products World Wide Web site, http://www.hp.com/go/hpprocurve.

As a Desktop Switch

The Series 2700 Switches are designed to be used primarily as desktop switches to which end nodes for power users, local servers, and printers and other peripherals are directly connected, as shown in the above illustration. Notice that the end node devices are connected to the switch by “straight-through” or “crossover” twisted-pair cables. Either cable type can be used because of the IEEE Auto MDI/MDI-X feature on the Series 2700 Switches.

Troubleshooting

This chapter describes how to troubleshoot your Series 2700 Switch including the following:

■basic troubleshooting tips (page 3-1)
■diagnosing with the LEDs (page 3-3)
■hardware diagnostic tests (page 3-4)
■HP Customer Support Services (page 3-5)

Basic Troubleshooting Tips

Most problems are caused by the following situations. Check for these items first when starting your troubleshooting:

■Connecting the RJ-45 ports to devices that have a fixed full-duplex configuration. The Series 2700 Switch RJ-45 ports are configured as "Auto". That is, when connecting to attached devices, the switch 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 Auto, the switch will automatically negotiate both link speed and communication mode
• if the connected device has a fixed configuration, for example 100 Mbps, at half or full duplex, the switch will automatically sense the link speed, but will default to a communication of half duplex

Because the Series 2700 Switches behave in this way (in compliance with the IEEE 802.3 standard), if a device connected to the switch RJ-45 ports has a fixed configuration at full duplex, the device will not connect correctly to the switch. The result will be high error rates and very inefficient communications between the switch and the device.

Make sure that all devices connected to the Series 2700 Switches' RJ-45 ports are configured to auto negotiate, or are configured to connect at half duplex (all hubs are configured this way, for example).

Troubleshooting

Basic Troubleshooting Tips

■ Faulty or loose cables. Look for loose or obviously faulty connections. If they appear to be OK, make sure the connections are secure. 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, “Switch Ports and Network Cables” for pinouts and correct cable wiring. A category 5 cable tester is a recommended tool for every 100Base-TX and 1000Base-T 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. An example topology is 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 in the Information Library section.

In addition, you should make sure that your network topology contains no data path loops. Between any two end nodes, there should be only one active cabling path at any time. Data path loops will cause broadcast storms that will severely impact your network performance.

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 IIP Procurve web site, http://www.hp.com/go/hpprocurve in the Information Library section.

Diagnosing with the LEDs

Table 3-1 shows LED patterns on the switch that indicate problem conditions.

1. Check in the table for the LED pattern that you see on your switch.
2. Refer to the corresponding diagnostic tip on the next few pages.

Table 3-1. LED Error Indicators

LED Pattern Indicating Problems			Diagnostic Tips
Power Fault Port Link
Off with power cord plugged in	*	*	1
On Prolonged On *			2
On Off Off w th cable		connected	3
* This LED is not important for the diagnosis.

Diagnostic Tips:

TipNumber Problem Solution
1	The switch is not plugged into an active AC power source, or the switch's power supply may have failed.	1. Verify that the power cord is plugged into an active power source and to the switch. Make sure these connections are secure.2. Try power cycling the switch 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 switch into a different outlet or try a different power cord.If the power source and power cord are OK and this condition persists, the switch 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 that came with your switch for more information.
2	A switch hardware failure has occurred during self test.	Try power cycling the switch. If the fault indication reoccurs, the switch has failed its self test. Call your HP-authorized LAN dealer, or use the electronic support services from HP to get assistance. See the Customer Support/Warranty booklet that came with your switch for more information.

Tip Number

Problem Solution

3

The network connection is not working properly. Try the following procedures:For the indicated port, verify that both ends of the cabling, at the switch and the connected device, are connected properly.Verify the connected device and switch are both powered on and operating correctly.Verify that you are using correctly wired network cables. See appendix B, “Switch Ports and Network Cables” for cable pinout information. Either “straight-through” or “crossover” cables can be used because of the switch’s “Auto MDI/MDI-X” feature.Verify that the connected devices comply with the IEEE 802.3ab standard, including transmission of a link signal. See “Testing Twisted-Pair Cabling” on page 3-5.Try the “Testing End-to-End Network Communications” procedures on page 3-5.If the other procedures don’t resolve the problem, try using a different port or a different cable.If you continue to have problems, 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.

Hardware Diagnostic Tests

Testing the Switch by Resetting It

If you believe that the switch is not operating correctly, you can reset the switch to test its circuitry and operating code. To reset a switch, either:

■Unplug and plug in the power cord (power cycling)
■Press the reset button on the front of the switch

Power cycling the switch and pressing the Reset button both cause the switch to perform its power-on self-test, which could resolve any temporary operational problems.

Checking the Switch LEDs

The self-test passes if the Fault LED on the front of the switch goes off after approximately 5 seconds. If this LED stays on longer than 10 seconds, an error condition has been detected on the switch.

See “Diagnosing with the LEDs” on page 3-3 for information on interpreting the LED patterns.

Testing Twisted-Pair Cabling

Network cables that fail to provide a link or provide an unreliable link between the switch and the connected network device may not be compatible with the IEEE 802.3 10Base-T, 100Base-TX, or 1000Base-T standards. The twisted-pair cables attached to the Series 2700 Switch must be compatible with the appropriate standards. To verify that your cable is compatible with these standards, use a qualified cable test device.

Testing End-to-End Network Communications

Both the switch 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 switch. For example, if you have two PCs on the network that have LAN adapters between which you can run a link-level test or Ping test through the switch, you can use this test to verify that the entire communication path between the two PCs is functioning correctly. See your LAN adapter documentation for more information on running a link test or Ping test.

HP Customer Support Services

If you are still having trouble with your switch, 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 switch 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 assistance, both with services that they offer and with services offered by HP.

Physical

Switch 2708 Switch 2724

Width: 44.3 cm (17.4 in) 44.3 cm (17.4 in)

Depth: 23.7 cm (9.3 in) 23.7 cm (9.3 in)

Height: 4.4 cm (1.7 in) 4.4 cm (1.7 in)

Weight : 3.1 kg (6.8 lbs) 3.5 kg (7.6 lbs)

Electrical

Each Series 2700 Switch automatically adjusts to any voltage between 100-240 volts and either 50 or 60 Hz.

AC voltage: 100–240 volts

Maximum current: 1.5 A

Frequency range: 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)	15% to 95% at 40°C (104°F)	15% to 90% at 65°C (149°F)
Maximum altitude:	4.6 km (15,000 ft)	4.6 km (15,000 ft)

Acoustic

Noise Emission LwA=48 dB in a virtual workspace according to DIN 45635 T.19

Connectors

The 10/100/1000 Mbps RJ-45 twisted-pair ports are compatible with the following standards:

■IEEE 802.3ab 1000Base-T
■IEEE 802.3u 100Base-TX
■IEEE 802.3 10Base-T

Safety

The Series 2700 Switches comply with these safety standards:

■EN60950 / IEC 950
■CSA 22.2 No. 950 (cUL 1950)
■NOM-019-SCFI-1994
■UL 1950 3 ^rd Edition

Switch Ports and Network Cables

This appendix includes switch connector information and network cable information for cables that should be used with the Series 2700 Switches, 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.

Switch Ports

The RJ-45 10/100/1000Base-T ports on the switch accept 100-ohm differential unshielded and shielded twisted-pair cable with RJ-45 connectors as described next.

Twisted-Pair Cables

10 Mbps Operation Category 3, 4, or 5 100-ohm differential 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 differential UTP or STP cable, complying with IEEE 802.3u 100Base-TX specifications, fitted with RJ-45 connectors.

1000 Mbps Operation Category 5 100-ohm differential 4-pair UTP or STP cable, complying with IEEE 802.3ab 1000Base-T specifications, fitted with RJ-45 connectors—Category 5E or better is recommended. (please see "Note on 1000Base-T Cable Requirements", on page B-2)

Note on 1000Base-T Cable Requirements. The Category 5 networking cables that work for 100Base-TX connections should also work for 1000Base-T, as long as all four-pairs are connected. But, for the most robust connections you should use cabling that complies with the Category 5E specifications, as described in Addendum 5 to the TIA-568-A standard (ANSI/TIA/EIA-568-A-5).

Because of the increased speed provided by 1000Base-T (Gigabit-T), network cable quality is more important than for either 10Base-T or 100Base-TX. Site cabling that is being used to carry 1000Base-T networking must comply with the IEEE 802.3ab standards. In particular, the cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT). Additionally, unlike the cables for 100Base-TX, the 1000Base-T cables must pass tests for Equal-Level Far-End Crosstalk (ELFEXT), Multiple Disturber ELFEXT, and Return Loss.

When testing your cabling, be sure to include the patch cables that connect the switch and other end devices to the patch panels on your site. The patch cables are frequently overlooked when testing cable and they must also comply with the cabling standards.

Twisted-Pair Cable/Connector Pin-Outs

The IEEE 802.3ab “Auto MDI/MDI-X” Feature: The 10/100/1000Base-T ports on the Series 2700 Switches all have the “Auto MDI/MDI-X” feature that is part of the IEEE 802.3ab standard. They automatically detect the type of port on any device connected to the Series 2700 Switch and then operate as either an MDI or MDI-X port, whichever is appropriate. If you connect a Series 2700 Switch twisted-pair port to another switch or hub, which typically have MDI-X ports, the Series 2700 Switch port operates as an MDI port and connects correctly. If you connect an end node, such as a server or PC which typically have MDI ports, to the Series 2700 Switch, the switch port operates as an MDI-X port and connects correctly.

So, for any connection, a “straight-through” twisted-pair cable can be used — you no longer have to use “crossover” cables. If you do happen to use a correctly wired crossover cable, though, the switch will still be able to automatically detect the MDI/MDI-X operation of the connected device and will link correctly.

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 the Pin Assignment tables below the cable illustrations later in this appendix for a listing of the signals used on each pin.
■For 10 Mbps connections to the ports, you can use 100-ohm differential Category 3, 4, or 5 unshielded (UTP) or shielded (STP) twisted-pair cable, as supported by the IEEE 802.3 10Base-T standard.
■For 100 Mbps connections to the ports, use 100-ohm differential Category 5 UTP or STP cable only, as supported by the IEEE 802.3u 100Base-TX standard.
■For 1000 Mbps connections, Category 5 or better 100-ohm differential UTP or STP cable only, as supported by the IEEE 802.3ab 1000Base-T standard; Category 5E or better is recommended.

Straight-Through Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connections

Because of the Auto MDI/MDI-X operation of the RJ-45 ports on the switch, when they are operating at either 10 Mbps or 100 Mbps, for all network connections, you can use "straight-through" cables.

For this feature to operate correctly, the port on the connected device must also be configured as Auto, not in any fixed configuration such as 100 Mbps/full duplex.

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 in this application, although they may be wired in the cable.

Pin Assignments
Switch End (MDI-X) Computer, Transceiver, or Other End

Signal Pins Pins Signal
receive +	1	1	transmit +
receive -	2	2	transmit -
transmit +	3	3	receive +
transmit -	6	6	receive -

Crossover Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connection

The Auto MDI/MDI-X operation of the RJ-45 ports at 10 Mbps or 100 Mbps also allows you to use “crossover” cables for all network connections, to PCs, servers or other end nodes, or to hubs or other switches.

For this feature to operate correctly, the port on the connected device must also be configured as Auto, not in any fixed configuration such as 100 Mbps/full duplex.

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 in this application, although they may be wired in the cable.

Pin Assignments
Switch End (MDI-X) Hub or Switch Port, or Other
MDI-X Port End

Signal Pins Pins Signal
receive +	1	6	transmit -
receive -	2	3	transmit +
transmit +	3	2	receive -
transmit -	6	1	receive +

Straight-Through Twisted-Pair Cable for 1000 Mbps Network Connections

1000Base-T connections require that all four pairs or wires be connected.

Cable Diagram

graph TD
    A["Connector A"] -->|1 2 3 4 5 6 7 8| B["1000Base-T Straight-through cable"]
    C["Connector B"] -->|1 2 3 4 5 6 7 8| B
    B --> D["white/orange"]
    B --> E["orange/white"]
    B --> F["white/green"]
    B --> G["green/white"]
    B --> H["blue/white"]
    B --> I["white/blue"]
    B --> J["white/brown"]
    B --> K["brown/white"]

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 and 5 on connector "A" must be wired as a twisted pair to pins 4 and 5 on connector "B".
• Pins 7 and 8 on connector "A" must be wired as a twisted pair to pins 7 and 8 on connector "B".

Pin Assignments

For 1000Base-T operation, all four pairs of wires are used for both transmit and receive.

Safety and EMC 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.

Safety Information (Japan)

安全性の考慮

安全記号

EMC Regulatory Statements

U.S.A.

FCC Class A

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 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 interference to radio communications. Operation of this equipment in a residential area may cause interference in which case the user will be required to correct the interference at his own expense.

Canada

This product complies with Class A Canadian EMC requirements.

Australia/New Zealand

This product complies with Australia/New Zealand EMC Class A requirements.

Japan

VCCI Class A

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 products:

Product Names: HP Procurve Switch 2708 HP Procurve Switch 2724

Model Numbers: J4898A J4897A

Accessories: none

Regulatory Model Number: RSVLC-0204

conform 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 products herewith comply with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC and carry the CE marking accordingly.

Tested with Hewlett-Packard Co. products only.

Roseville, September 26, 2002

Mike Jany

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:[phone]).

Index

Numerics

10/100/1000Base-T ports

location on switch ... 1-2

1000Base-T

connections, length limitations ... 2-4

note on cable requirements ... B-2

ports, cables used with ... 2-4, B-1

twisted-pair cable specifications ... B-1

100Base-TX

connections, length limitations ... 2-4

ports, cables used with ... 2-4, B-1

twisted-pair cable specifications ... B-1

10Base-T

connections, length limitations ... 2-4

ports, cables used with ... 2-4, B-1

twisted-pair cable specifications ... B-1

A

address learning ... 1-7

address table

automatic address learning ... 1-7

filtering out traffic ... 1-7

flooding traffic ... 1-7

forwarding traffic ... 1-7

moves and changes ... 1-7

operation ... 1-7

Auto MDI/MDI-X

effect on cable usage ... 2-4, B-3

feature description ... B-3

B

back of switch

description ... 1-5

power connector ... 1-5

basic troubleshooting tips ... 3-1

blinking LEDs

error indications ... 3-3

buttons

Mode LED View button ... 1-4

Reset button ... 1-2

C

cabinet

mounting the switch in ... 2-7

cables

1000Base-T

cable specifications ... B-1

connections ... 2-4

note on cable requirements ... B-2

100Base-TX

cable specifications ... B-1

connections ... 2-4

10Base-T

cable specifications ... B-1

connections ... 2-4

connecting cables to switch ports ... 2-12

effects of non-standard cables ... 3-2

infrastructure requirements ... 2-4

twisted-pair connector pin-outs ... B-3

cables, twisted pair

crossover cable pin-out ... B-5

MDI-X to MDI connections ... B-4, B-6

MDI-X to MDI-X connections ... B-5

note on requirements for 1000Base-T ... B-2

pin-outs ... B-6

straight-through cable pin-out ... B-4, B-6

switch-to-computer connection ... B-4, B-6

switch-to-switch or hub connection ... B-5

cabling infrastructure ... 2-4

connecting the switch to a power source ... 2-12

connector specifications ... A-2

crossover cable

pin-out ... B-5

D

description

back of switch ... 1-5

front of switch ... 1-2

LEDs ... 1-3

description, switch ... 1-1

desktop switch

example topology ... 2-14

diagnostic tests ... 3-4

checking the LEDs ... 3-4

end-to-endconnectivity...3-5

testing the switch only ... 3-4

testing twisted-pair cabling ... 3-5

E

electrical specifications, switch ... A-1

EMC regulatory statements ... C-8

environmental specifications, switch ... A-1

F

Fault LED ... 1-3

location on switch ... 1-2

showing error conditions ... 3-3

features, switch ... 1-6

filtering out traffic ... 1-7

flooding traffic ... 1-7

forwarding traffic ... 1-7

front of switch

10/100/1000Base-T ports ... 1-2

description ... 1-2

Mode LED View button and LEDs ... 1-4

network ports ... 1-2

Reset button ... 1-2

H

horizontal surface, mounting switch on ... 2-12

I

IEEE 802.3ab Auto MDI/MDI-X

See Auto MDI/MDI-X

included parts ... 2-1

installation

connecting the switch to a power source ... 2-12

horizontal surface mounting ... 2-12

network cable requirements ... 2-4

precautions ... 2-3

rack or cabinet mounting ... 2-7

site preparation ... 2-4

summary ... 2-2

wall mounting ... 2-10

L

LEDs

behavior during self test ... 2-6

checking during troubleshooting ... 3-4

descriptions of ... 1-3

error indications ... 3-3

Fault ... 1-3

showing error conditions ... 3-3

Link ... 1-3

location on switch ... 1-2

Mode

description ... 1-3

selecting the display ... 1-4

mode view indicators ... 1-3

on switch ... 1-3

Power ... 1-3

behavior during self test ... 2-6

length limitations

1000Base-T connections ... 2-4

100Base-TX connections ... 2-4

10Base-T connections ... 2-4

Link LEDs ... 1-3

M

MDI-X to MDI network cable ... B-4, B-6

MDI-X to MDI-X network cable ... B-5

Mode LED View

button ... 1-4

indicator LEDs ... 1-3

Mode LEDs

description ... 1-3

selecting the display ... 1-4

mounting the switch

in a rack or cabinet ... 2-7

on a horizontal surface ... 2-12

on a wall ... 2-10

precautions ... 2-3, 2-10

moves and changes

effect on address table ... 1-7

N

network cables

1000Base-T

connections ... 2-4

100Base-TX

connections ... 2-4

10Base-T

connections ... 2-4

required types ... 2-4

twisted-pair connector pin-outs ... B-3

network devices

connecting to the switch ... 2-12

network ports

connecting to ... 2-12

location on switch ... 1-2

standards compliance ... A-2

types of ... 1-2

non-standard network cables, effects ... 3-2

P

parts, included with the switch ... 2-1

physical specifications, switch ... A-1

pin-outs

twisted-pair cables ... B-3

port LEDs

Link ... 1-3

Mode ... 1-3

ports

10/100/1000Base-T, location on switch ... 1-2

network connections ... 2-12

power connector ... 1-5

Power LED ... 1-3

behavior during self test ... 2-6

location on switch ... 1-2

power source

connecting the switch to ... 2-12

precautions

mounting the switch ... 2-3

mounting the switch on a wall ... 2-3, 2-10

power requirements ... 2-3

R

rack

mounting precautions ... 2-3

mounting the switch in ... 2-7

regulatory statements ... C-8

Reset button

description ... 1-2

location on switch ... 1-2

resetting the switch

location of Reset button ... 1-2

troubleshooting procedure ... 3-4

S

safety and regulatory statements ... C-1

safety specifications ... A-2

selecting the Mode LED display ... 1-4

self test

LED behavior during ... 2-6

specifications

connectors ... A-2

electrical ... A-1

environmental ... A-1

physical ... A-1

safety ... A-2

straight-through cable

pin-out ... B-4, B-6

summary of switch installation ... 2-2

switch

connecting to a power source ... 2-12

description ... 1-1

electrical specifications ... A-1

environmental specifications ... A-1

features ... 1-6

front panel description ... 1-2

included parts ... 2-1

LED descriptions ... 1-3

mounting in a rack or cabinet ... 2-7

mounting on a wall ... 2-10

mounting on horizontal surface ... 2-12

operation ... 1-7

physical specifications ... A-1

switch operation

address table ... 1-7

description ... 1-7

filtering out traffic ... 1-7

flooding traffic ... 1-7

forwarding traffic ... 1-7

network moves and changes ... 1-7

verifying after installation ... 2-5

T

testing

checking the LEDs ... 3-4

diagnostic tests ... 3-4

end-to-end communications ... 3-5

switch operation ... 3-4

twisted-pair cabling ... 3-5

tips for troubleshooting ... 3-1

topologies

effects of improper topology ... 3-2

examples of ... 2-14

troubleshooting ... 3-1

basic tips ... 3-1

checking the LEDs ... 3-4

common network problems ... 3-1

diagnostic tests ... 3-4

effects of improper topology ... 3-2

effects of non-standard cables ... 3-2

testing end-to-end communications ... 3-5

testing the switch ... 3-4

testing the twisted-pair cables ... 3-5

twisted-pair cable

crossover cable pin-out ... B-5

pin-outs ... B-3, B-6

straight-through cable pin-out ... B-4, B-6

switch-to-computer connection ... B-4, B-6

switch-to-switch or hub connection ... B-5

testing ... 3-5

W

wall

mounting switch on ... 2-10

Technical information in this document is subject to change without notice.

©Copyright Hewlett-Packard Company 2002. All right reserved.

Reproduction, adaptation, or translation without prior written permission is prohibited except as allowed under the copyright laws.

October 2002

Manual Part Number 5990-3055