HP J3175A, J3177A User Manual

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Installationand Reference Guide

HPJ3175A HPJ3177A

HPAdvanceStack Switch 208/224

HP Customer Support Services

How to get the latest software/agent firmware

You can download from the World Wide Web, HP FTP Library Service, CompuServe, and HP BBS a compressed file (j3178xx.exe) containing the latest version of the HP Switch 208/224 Management Module software and proprietary MIB. After you download the file, extract the file by typing For example, j317801 [Enter].

World Wide Web

http://www.hp.com/go/network_city

Select the “Support” section. From this web site, you can also download information on the HP networking prod-

ucts. If you have a growing network, download the Designing HP AdvanceStack Workgroup Networks Guide or call 1-80 0-752-0900 in the U.S. to receive a copy through the mail.

HP FTP Library Service

1. FTP to Internet IP Address — ftp ftp.hp.com.

2. Log in as anonymous and press [Return] at the passwor d prompt.

3. Enter bin to set the transfer type.

4. Enter cd /pub/networking/software.

5. Enter get

filename

to transfer the file to your computer, then quit.

filename

and pressing [Enter].

CompuServe

1. Login to CompuServe.

2. Go to the “hp” service.

3. Select “HP Systems, Disks, Tapes, etc.”

4. Select “Networking Products” library.

5. Download

HP BBS

Set your modem to no par ity, eight bits, 1 st op bit, se t speed up to 14400 bps, and with your telecommuni cation pr ogram (e. g. , Windows T ermina l) dial (208) 344 -1691 in the U.S. to get the latest software for your HP networking product. For other countries, see http://www.hp.com/cposupport/eschome.html.

(over for more services)

filename

and then quit.

✂

Obtain the latest console code (j3178xx.exe) f rom:

HP FTP Library: ftp ftp-boi.external.hp.com World Wide Web: http://www.hp.com/go/network_ci ty HP BBS: (208) 344-1691

(over)

HP FIRST Fax Retrieval Service

HP FIRST is an automated fax retrieva l servi ce that is avail able 24 hours a day, seven days a week. HP FIRST provides information on the following topics:

■ Product information

■ Troubleshooting instructions

■ Technical reviews and articles

■ Configuration information

To access HP FIRST, dial one of the following phone numbers:

Location Phone Number

U.S. and Canada Only Dial 1 (80 0) 33 3-1 917 with your fax m achi ne o r to uch -tone phon e

Outside the U.S. and Canada Dial 1 (208) 344-4809 from your fax machine and press 9. To re c eiv e a li st of c urr e nt ly a va il ab le do cu me nt s, e nt er do cu me nt n u mbe r 1 994 1. The i nf orm at i o n

you requested will be sent to you by return fax. For other countries, see http://www.hp.com/ cposupport/eschome.html.

and press 1.

Additional HP Support Services

In addition to the above services, you can purchase various HP telephone support services which provide you expert HP technical assistance:

■ Network Phone-In Support provides you support at an hourly rate. In the U.S.,

call 1-800-790-5544. In other countries, please contact your local HP Response Center to see if this service is available in your country.

■ HP SupportPack Comprehensive Network Support provides complete prob-

lem resolution for medium to large interconnected local and wide area networks. Contact your HP Authorized Reseller or the nearest HP Sales and Support Office for more information.

HP offers other hardware support services. Please contact your reseller for more information.

CompuServe: Go hpsys

Network Phone-In Support (hourly):

Lib 7. Download j3178xx.exe

1-800-790-5544

✂

HP AdvanceStack Switch 208/224

Installation and Reference Guide

This document contains information which is protected by copyright. Reproduction, adaptation, or translation without prior permission is prohi bited, except as allow ed under the copyright laws.

Publication N umber

5966-5225 Edition 1 March 19 9 7

Applicable Products

HP J3175A Ad vanceStac k Switch 208T HP J3177A Ad vanceStac k Switch 224T

Disclaimer

The information contained in this document is subject to change with out 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 liabl e for err o r s co n tained her ei n or for inc ide ntal or consequential damages in connect ion with t he furnishing, performance, or us e of this material.

Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-P a ck ard.

Warrant y

A copy of the specific warr anty terms applicable to your Hewlett- Packard products and replacemen t parts can be obtained from your HP Sales an d Service Office or authorized dealer .

Hewlett-Packard Company 8000 Foothills Boulevard, m/s 5552 Roseville, Californ ia 95747-5552 http://www.hp.com/ go/network_city

1 Installing the Swi tch 208/224

Included P a rts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Installation Step s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1. Prepare the Installation S ite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2. Install Any Optional Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3. Verify the Switch’s Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 8

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

6. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

As a Segment Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Connecting to a Backbone Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Cable Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

2 Switch 20 8/224 Descripti on

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Front of the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 2

Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 3

Management Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Back of the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Redundant Power Supply (RPS) Connector . . . . . . . . . . . . . . . . . . . . . 2-5

Expansion Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Switch Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Address Table Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Simultaneous Network Communicat ions . . . . . . . . . . . . . . . . . . . . . . . 2- 7

iii

3 Troubleshooting

Solutions to Common Pro blems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 1

LED Error Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Testing the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 4

Testing Twis t e d -Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . . 3-5

Testing Switch-to-Device Network Communications . . . . . . . . . . . . . 3-5

Resetting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 6

A Cables and Connectors

Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . A-1

Twisted-Pair Cable for Switch (MDI-X) to

Computer (MDI) Network Connection . . . . . . . . . . . . . . . . . . . . . . . . A-2

Twisted-Pair Cable for Switch (MDI-X) to

Hub or Switch (MDI-X) Network Connection . . . . . . . . . . . . . . . . . . . A- 3

Twisted-Pair Cable Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A- 4

B Specif ic a t i ons

C Safety and Regu latory Statement s

Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Power Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Safety Informa tion (J apanese) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8

Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10

Index

Installing the Switch 208/224

The HP AdvanceStack Switch 208T and 224T are low-latency, high-speed switches that you can use to build high- p erformance switched workgroup networks.

The two switch models are:

HP J3175A AdvanceStack Switch 208T

HP J3177A AdvanceStack Switch 224T

Installing t he Swi tch 208/22 4

Throughout this manual, these switches will be abbreviated as the Switch 208T and Switch 224T, or, when common characteristics are being descri bed, as the Switch 208/224.

The Switch 208T and 224T have eigh t and twenty-four 10Base- T ports, respe ctively, and two 100Ba se-T ports: one fixed RJ- 45 port and one transceiver slot for installing an HP 100Base-TX or 100Base-FX Transceiver Module.

With these switches you can build a switched n etw o rk infrastructure by connecting hubs or other switches, or you can connect computers, printers, and servers to these switches to provide dedicated bandwidth to those devices.

This chapter shows you how to ins tall your Switch 208T or 224T.

1-1

Installing the S witch 208/ 22 4

Included Parts

The Switch 208T and 224T have the following c omponents ship ped with them:

■ HP AdvanceStack Switch 208/224 Installation and Reference Guide

(5964-5225), this manual

■ Warranty booklet

Installing t he Swi tch 208/224

■ Accessory kit (5063-8570)

• two mounting brackets

• t w o ca b le ties

• four 10 mm M3 thread-forming screw s to attach the mounting brackets to the switch

• four 5/8-inch number 12-24 screws to attach the switch to a rack

■ Power cord, one of the following:

Australia/New Zealand/China (8120-6810) Denmark (8120-6 814) Europe (8120-6811) Japan (8120-6798) Switzerland (8120-6815) United Kingdom (8120-6 809) United Sta tes/Canada (8120-6 812)

1-2

Installation Steps

Follow these easy s teps to install your switch. The res t of this chapter provides details on these steps.

1. Prepare the installation site

2. In st a l l an y optional m o dules

3. Verify that the switch passes self test

4. Mount the switch

5. Connect power to the switch

6. Connect the network cables

Installing the Switch 208/224

Installation Steps

1. Prepare the Installation Sit e

■ Cabling Infrastructure - Ensure that the cabling infrastructure meets

the necessary network specifications:

• For the 10Base-T ports, use category 3, 4, or 5, four-pair, 100 ohm UTP (unshielded twisted-pair) cables. Cable lengths can be up to 100 meters for category 3 or 4, and 150 meters for category 5. For connecting these ports to end nodes, use “straight-through” cable; for connecting to hubs or other switches, use “crossover” cable. See appendix A, “Cables and Connectors” for more information

• For the fixed 100Base-TX por t and 100B ase-T X transceiver s that yo u install in the transceiver slot, use categor y 5, 100-ohm UTP cables. Cable lengths can be up to 100 meters.

For connecting these ports to end nodes, use “straight-through” cable; for connecting to hubs and switches, use “crossover” cable.

• For 100Base-FX transceiver s that yo u in stall in the transceiver slot , use 1300 nm multi-mode fiber-optic cables that are fitted with SC connectors, and conform to ISO/IEC 793-2 type B1 and ITU-T G.652 standards. Cable lengths can be up to 1 kilometer.

■ Installation Precautions -

• Before installin g the switch, pl an it s locati on and orien ta tion r el ative to other devices and equipment. In the front of the switch, leave at least 3 inches (7.6 cm) of space for the twis ted -pair and fiber-optic cabling. In the back, leave at least 1 1/2 inches (3.8 cm) of space fo r the power cord.

• Caution: 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 l imit for the circuit. The maximum ampere ratings are usual ly printed on the device s near the A C power connectors.

• Caution: Ensure t h a t t h e p o wer source ci r cuits are p ro perly grounded. See the Safety Statements at the end of this manual.

• 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 of the switch is not restricted.

Installing t he Swi tch 208/22 4

1-3

Installing the S witch 208/ 22 4

Installation Steps

2. Install Any Optional Modules

Install optional modules into the Management Slot, Expansion Slot, or transceiver slot by follo wing the instru ctions in the manuals that accompany these products.

Each of the slot cove rs can b e removed with either a fl at-bl aded or T orx T-10 screwdriver. Retain the slot covers for future use.

Installing t he Swi tch 208/224

Caution To avoid damage to circuitry in the switch and any modules, always unplug

the power from the switch before installing a module into the Expansion Slot, Management Slot, or tran sceiver slot, and when removing any modules.

If you do not install an optional module, make sure that the cover plate is st ill attached over the slot for safe operation and proper switch cooling.

Installing Modules

Front of Switch

Management Slot

HP J3178A AdvanceStack Swi tch 208/224 Management Module

1-4

Installing the Switch 208/224

Installation Steps

Back of Switch

Expansion Slot

support ed expansion module

Note An expansion slot module uses the switch port 1 circuitry to communicate

with the other switch ports. Therefore, installing an expansion module disables port 1 as reflected by the LED on the front of the switch.

Installing Transceivers

Installing t he Swi tch 208/22 4

Blue color bar w ith “100 T” in it, and “B”, or late r, model numbe r identifi es a corr ect transceiver for the Switch 208T and 224T

Install either of these HP 100Base-T transceiver modules into the transceiver slot:

- HP J3192B 100Base-TX Twisted-Pair Transceiver Module

- HP J3193B 100Base-FX Fiber-Optic Transceiver Module

Cautions Make sure you install only t he “B” model or later versions of these

100Base-T transceiver modules into the Switch 208/224. Do not install any 100VG transceiver modules in this slot.

1-5

Installing the S witch 208/ 22 4

Installation Steps

3. Verify the Switch’s Operat ion

After you have installed any modules, but before mounting the switch in its network location, you should first verify that it is working properly by plugging it into a power source and verifying that it passes its self test.

1. Connect the power c ord supplied w ith the switch t o the power connecto r on the back of the switch, and then into a properly grounded electrical outlet.

Installing t he Swi tch 208/224

Connec t power cord to

ower conne ctor.

Note The Switch 208/2 24 does not hav e a power switch. It is powered on when the

power cord is connected to the switch and to a power source. If your installation requires a different power cord than the one supplied with

the switch, 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.

1-6

2. Check the LEDs on the switch’s front panel (and on the Switch Manage-

ment Module, if one is installed in the switch). The LED behavior is described on the next page.

switch LEDs

Switch Management Module LEDs

Installing the Switch 208/224

Installation Steps

When the switch is powered on, it performs its diagnostic self test. With the Switch Management Module insta lled, the self test takes approximately 15 seconds to complete. Without the Switch Management Module, the test completes in approximately 4 seconds.

LED Behavior:

During the self test:

• Initially, all LEDs are on.

• With a Management Module installed, the switch port LEDs all g o off

after approximately 10 seconds, and the Management Module Self Test and Fault LEDs stay on for an additional 5 to 7 seconds.

When the self test completes successfully:

• The Power LED and, if an RPS is connected, the RPS LED remain on.

The “100” LED for port A also stays on.

• The Fault LED on the switch, and the Self Test and Fault LEDs on the

Management Module go off.

• The port LEDs go into their normal operational mode, if they are

connected to active network devices.

If the LED display is different than what is described above, especially if any Fault LEDs stay on for more than 30 seconds or flash, the self test has not completed correctly. Refer to chapter 3, “Troubleshooting” for diagnostic help.

Installing t he Swi tch 208/22 4

1-7

Installing the S witch 208/ 22 4

Installation Steps

4. Mount the Sw itch

After the modules are inserted and you have verified that the switch passes self test, you are ready to mount the switch in a stable location. The Switch 208/224 can be mounted in three ways:

■ in a rack or cabinet

■ on a wall

■ on a horizontal surface

Installing t he Swi tch 208/224

Mounting the Switch in a Rack or Cabinet

The Switch 208/224 is designed to be mounted in any EIA-standard 19-inch telco equipment rack. To order a rack for your switch, call HP at 1-800-5388787 to order product number HP 46298D.

For safe operation, please read the mounting precautions in

appendix C, “Safety and Regulatory” before mounting a switch.

1. Use a #1 Phillips (cross-head) or Pozidriv screwdriver and attach the mounting brackets to the swit ch with the includ ed 10-mm M3 threadforming screws .

1-8

10 mm M3 scre w s

Installing the Switch 208/224

Installation Steps

2. Partially install a screw (5/ 8-inch number 12-2 4) into the top h ole of a p air of holes that are 0.5 inches apart in each rack/cabine t uprigh t as shown in the illustration below. Tighten each screw enough to support the weight of the switch, approximately two turns. Ensure that the screws are at the same level in each up ri g h t .

Insert a screw into the top hole of a close (0.5-inch)

3. Place the switch in t he ra ck and l ower it so the notches in the bottom of the bracket slide onto th e screws. T ighten thes e screws-be careful not to overtighten.

Installing t he Swi tch 208/22 4

1-9

Installing the S witch 208/ 22 4

Installation Steps

4. Install the oth er number 12- 24 s crew into th e upper hole in eac h bracket . Tighten these screws-be careful not to overtighten.

Installing t he Swi tch 208/224

install additional screw

1-10

Installing the Switch 208/224

Installation Steps

Mounting the Switch on a Wall

You can mount the switch on a wall as shown in the illustration below. Note that the switch should be mounted only to a wall or wood surface that is at least 1/2-inch plywood or its equivalent.

1. Using a Phil lips ( cross- head) or P ozidri v screwd river w ith the 1 0-mm M3 thread-forming screws included in the accessory kit, attach the mounting brackets to the switch as shown in the illustration below.

2. Attach the switch to the wall or wood surface with 5/8-inch number 12 wood screws (not included}.

Installing t he Swi tch 208/22 4

Mounting the Switch on a Horizontal Surface

Place the switch on a table or other horizontal surface . Use a sturd y surface in an uncluttered area. You may want to secure the networ kin g cab les and switch power cord to the table leg or other part of the surface structure to help prevent people from tripp ing ov er the cords.

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

and around the HP J2692A Redundant Power Supply, if used.

1-11

Installing the S witch 208/ 22 4

Installation Steps

5. Connect the Switch to a Power Source

1. (Optional.) This product supports use of the HP J2962A Redundant Power Supply (RPS), which can help ensure continuous switch operation in the event of a power failure. If you have this HP RPS, connect the RPS to the switch now and connect the RPS to an appropriate AC power source.

Installing t he Swi tch 208/224

Caution When installed, the RPS is used in place of the standard power cord, so make

sure you disconnect the standa rd power cord from the switch before you connect the RPS. Using both the standard power cord and the RPS at the same

time could damage the switch’s components .

Back of Switch

Back of RPS

For information on how to install and connect the HP RPS, refer to the documentation supplied with the RPS.

2. If you are not u sing an RPS, plug th e included power co rd into the switch's power cord receptacle and into an AC power source as shown below.

1-12

power receptacle on the back of th e sw itch

3. Re-check the LEDs during self test. Initially, all LEDs are on. After the four-second self test (or 15 second self test with Management Module), only the Power and po rt A “100” LEDs (and o pt ion ally the RPS LED) are on. See “LED Behavior” on page 7.

Installing the Switch 208/224

Installation Steps

6. Connect the Network Cables

Using RJ-45 Connectors (10 Mbit/s and 100 Mbit/s ports)

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 the connected devic e, the Port LED should light to confirm a powered-on device

(for example, an end node) is at the other

end of the cable.

To disconnect:

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

Caution:

Do not connect a 10 Mbit/s network into eith er of the 100 Mbit/s por ts.

100Base-T Xcvr Slot

Unshielded twisted-pair cable: Category 3, 4, or 5 for 10 Mbit/s ports Category 5 only f or 100 Mbit/s port s

Cat 3, 4 maximum distance: 100 meters Cat 5 maximum distance: 150 meters fo r 10 BT

100 meters for 100BT

RJ-45 plug

Installing t he Swi tch 208/22 4

An optional 100 Base-T transceiver module can be install ed in the switch’s transceiver (Xcvr) slot to provide additional connectivity choices, including:

HP 100Base-FX Fiber-Optic Transceiver Module

(HP J3193B)

Maximum Distance: 1 kilometer HP 100Base-TX Twisted-Pair Tr ansceiver Mod ul

(HP J3192B) Category 5 maxim um distance: 100 meters

See the documentation accompanyin g th e optional transceiver modules for cabling configurations for those modules.

1-13

Installing the S witch 208/ 22 4

Installation Steps

If the Port LED does not go on when the network cable is connected to the port, use this table to solve the problem:

Condition Diagnostic Tip

Port LED is still off when a cable is connected

Installing t he Swi tch 208/224

Try the foll ow ing:

• For the indicat ed port, verify that both ends of the cabling, switch and con nected device, ar e snug.

• Verify the conne cted device and swi tch are both powered on and operating corre ctly.

• Verify that you have used the correct cable type for the connection. For t wiste d-p air cab le c onnecti ons , in ge neral, for connecting to an end nod e, use “straight-through” cable; for connecting to hubs or other switches, use “crossover” cable.

• Verify that you have not conn ected a 10 Mbit/s netw ork cable into one of the 100 Mbit/s ports.

• Verify that if you are connecting the cable to port 1, the switch does not have an optional exp ansion module installed in t he expansion slot i n the back of the switch. When an expansi on modu le is i nst alle d, it uses the port 1 circuitry to communicat e w ith the rest of the network through the sw itch and the port 1 RJ-45 connecto r is thus disabled.

• Use a different port or a different cable.

If you have i nstalled t he Switch Man agement Modul e, you can use the conso le interface or HP AdvanceStack Assistant network management software to determine the state of the port and reenable the port if necessary.

1-14

Installing the Switch 208/224

Sample Net w ork Topologies

Sample Netwo rk Topo logies

This section shows you a few sample network topologies in which the Switch 208/224 is implemented. See the document Designing HP AdvanceStack Workgroup Network s, which can be found on the HP network products World Wide Web site, http://www.hp.com/go/network_city, and on the CD-ROM supplied with the Swit ch Management Module. You may also be able to obtai n a printed copy of this document from your HP-authorized LAN dealer.

As a Segment Switch

Server

Installing t he Swi tch 208/22 4

100 Base-FX fiber-optic cable to

twisted-pair “straight- through” cables

categor y 5 twisted-pair “straight-through” cable

Switch 208T

twisted-p air “crossover” cables

Ethernet Hubs

PCs, printers , and local

In general, the Switch 208T is designed to be used as a segment switch. That it, with its large address table (8000 MAC addresses) an d hig h perfo r mance, it is ideal for interconnecting network segments -- simply connect the network hubs that form those segments to the Switch.

In the illustration above, two Ethernet hubs with PCs, printers, and local servers attached, are both connected to a S witch 208T. T he d evices attached to the two hubs can now communicate with each other through the switch. They can also all communicate with the server that is connec ted to the swit ch through its 100Base-TX port. Connecting the server to the 100 Mbit/s port allows a large number of users to acces s the server wit hout causi ng network congestion.

1-15

Installing the S witch 208/ 22 4

Sample Network Topologie s

The switch, in turn, is connected to a network backbone through fiber-optic cabling connected to a 100Base-FX transceiver in stalled in the switch. Now, all the devices in this network can access other network res o urces that are connected elsewhere on the network backbone.

As a Desktop Switch

Installing t he Swi tch 208/224

twisted-pair

“straightthrough” cables

Server

Switch 224T

PCs and peripherals

Switch 224T is designed to be used as a desktop switch to which end nodes, printers and other peripherals, and servers are directly connected. Although, since it has the same large 8000 address table and high performa nce as the Switch 208T, it also can be used as a segment switch. Or, you could, of course, connect a combination of end nodes and hubs to the Switch 224T ports.

1-16

Installing the Switch 208/224

Sample Net w ork Topologies

FDDI Campus Backbone

Switch 2000

Connecting to a Backbone Switch

100Base-FX cable

Installing t he Swi tch 208/22 4

Switch 224T

100Base- FX cable

Switch 208T

The simpler segment and desktop networks shown in the previous two examples can easily be combi ned and exp anded. For exam ple, you cou ld us e an HP Switch 2000 to interconnect each of your smaller switched workgroups to form a larger switched network . All the devices in this netwo rk can communicate with each other. With an FDDI Module, for example, in t he Switch 2000, the entire switched topology could be connected to a campus backbone, as shown in the illustration above.

1-17

Installing the S witch 208/ 22 4

Cable Management

The Switch 208/224 has been designed to help you with the problem of managing your network cables. On both sides of the front of each switch are two holes that ac cept a cabl e tie to ti e-wr ap your c ables. Si mply slide the en d of the cable tie into the top or bottom hole until it appears out the other hole

Installing t he Swi tch 208/224

as shown in the illustration below. Then use the cable tie to bundle the network cables together

1-18

Where to Go From Here

Your switch is now correctly installed and is able to send and receive data between end nodes, servers, and printers.

The Swit ch 208/224 a re plug-and-communicate network devices requiring no configuration. If you wish to manage the switch from an SNMP-base d network management stati on, you will need to install an HP Switch 208/224 Management Module i n the swi tch. If th e manage ment is over an I P netw ork, you wi ll also need to configure the IP address on the switch; see the HP Switch 208/ 224 Management Module Installation and Reference Guide for information on how to us e th e switch console interface or HP AdvanceStack Assistant to configure the IP address. For Novell Netware (IPX) networks, no configuration is neces sary to manage th e sw itch--the n et work address is auto matical ly generated.

Switc h 208 /2 24 Descr i ption

The HP AdvanceStack Switch 208T and 224T are high-speed, multi port switches that can be used to build switched networks with both Ethernet/ IEEE 802.3 and 1 00Base-T devices, inc luding computers, servers , and printers, as well as other network infrastructure devices: hubs, bridges, other switches, and routers.

This chapter describes your HP AdvanceStack Switch 208T and 224T including:

■ Features

■ Front and back of the switches

■ Switch operation

Switc h 20 8/ 22 4 De sc r ipt io n

Features

The features of the Switch 208T an d 224T include:

■ All ports are enabl ed -- just connect the n etwork cables to act ive network

devices and your switched network is operational.

■ Network addresses are automatically learne d an d stored in the switches

8000-address for warding tab le.

■ All network ports (fixed and transceiver) operate in half-duplex mode at

the speed in d icated on the switch labeling, either 10 Mbit/s or 100 Mbit/s.

2-1

Switch 208/224 Description

Front of the Switches

Front of the Sw itches

LED indicating Port 1 is disable d

LEDs for 10 Mbit/s ports

Power LED

Fault LED

4 LEDs for expansi on module

RPS LED

LEDs for 100 Mbit/s ports

HP J3175A

Switch 208T

Switc h 20 8/ 22 4 De sc r ipt io n

HP J3177A

Switch 224T

slot for Switch Management Module

100 Mbit/s por t s:

- one fixe d RJ-4 5

- one

10 Mbit/s RJ-45ports

Network Ports

2-2

■ 8 or 24 10 Mbit/s RJ-45 Ethernet/IEEE 802.3 ports

■ one fixed 100 Mbit/s RJ-45 100Base-TX port

■ one 100 Mbit/s transceiver slot for install in g HP 100B ase-TX or 100Base-

FX transceivers

All the twis ted-pair ports are wired as MDI-X. Therefore, to c onnect end nodes

or other MDI-type devices to these ports, use “straight-through” twisted-pair cable; to connect hubs, switches, or other MDI-X-type devices to these ports, use “crossover” twisted-pair cable. See appendix A, “Cables and Connectors” for descriptio n s of these cab les.

The cabling to the transceiver port depends on the type of transceiver installed. For more information, refer to the manual that came with the transceiver.

Switch 208/224 Description

Front of the Switches

LEDs

LED State Meaning

Powe r (g re e n) Off The switch is not receiving power.

On The switch is receiving power.

Fault On The switch has failed its self-t est after being power ed on or reset.

Flashing Slowly*

Off The normal state. Indicates that there are no fault conditions on the switch.

RPS Off This switch is not r eceiving power from the HP J296 2A Redundant Po w er Supply

On This switch is receiving power from the connected RPS. Flashing

Slowly*

Expansion Slot Module LEDs (4)

(port 1 disabled)

Off The port 1 RJ-4 5 c onne ct or is av ai la ble t o b e u sed for conn ect i ng a ne twor k dev ic e

100 Mbit/s Ports A or B Off No active network cable is connected to the port. For port B, could indicate that

On Indicate s that an optio nal modul e is inst alled i n the expa nsion slot in th e back of the

An incorrect transceiver has been installed in the transceiver slot, or a connected RPS has a failure. The corr esponding LED (transceiver port or RPS) will also flash.

(RPS).

An erro r has occ urr ed on th e RP S co nnec te d to t he swi tch. See t he docu ment at ion provided with the RPS for tro ubleshooting.

The behavi or of th ese fou r LEDs depend s on the module i nserted i nto the Ex pansi on Slot. See the module manual for a description of thes e LEDs.

switch. Any expansion modules installed into the switch use the port 1 circuitry to communicate with the network through the switch. Theref ore, when a module is install ed, the port 1 RJ-45 connect or is c an not be us ed to conn ect a network d evice .

to the switch.

there is no tra nsceiver instal led. Co uld al so indi cate tha t the port has been di sable d through the switch console or HP AdvanceStack Assistant (port configuration changes r equire a Switch Management Module to be installed).

Switc h 20 8/ 22 4 De sc r ipt io n

On During the first 3 seconds after an active network cable is connect ed or after a

switch reset, indicates the port is enabled and receiving a link beat signa l . After 3

seconds, On continuously indica tes a saturated network segment on the port. Flickering Indicates activity on the port. Flashing

Slowly*

100 On The port is operating in 100 Mbit/s mode. Fdx On The port is ope rating in full-dupl ex mode.

Off The port is operating is half-duplex mode , or is not oper ating.

This cond ition will only occur on the 100 Mbit/s port B (the transceiver port), if an

incorr ect transceiver is in stalled in the slot.

2-3

Switch 208/224 Description

Front of the Switches

LED State Meaning

10 Mbit/s Ports Port Number Off The port is not receiving the link beat signal from the attached node or the port is

On The port is enabled and li nk beat is detected from the attached nod e. Flickering Indicates activity on the port.

* The slow flash behavior is a regular pulse once every 1. 6 seconds, approximatel y.

disabled.

Management Slot

The Management Slot in the front of the switch allows you to install an HP Switch 208/224 Management Module. When i nstalled, the Switch Management Module adds these features to your switch:

Management Module Features

Switc h 20 8/ 22 4 De sc r ipt io n

■ Access to the s witch console fr om which you can configur e, monitor, an d

troubleshoot the switch

■ Access to the switch from SNMP network management programs, such

as HP AdvanceStack Assi stant, for controllin g th e swit ch usin g an advanced, graphics-based interface

■ Configurable full-duplex port operation

■ Configurable support for the Spanning Tree Protocol for switched

networks

■ Configurable MAC Address Table aging

2-4

For more informatio n on the HP Switch 208/2 24 Management Module, cont act your HP-authorized LAN reseller , or you can find out about HP switches an d their accessories, and other HP networking products by visiting the World Wide Web site http://www.hp.com/go/network_city .

Switch 208/224 Description

Back of the Switches

Back of the Sw itches

Power Connecto rs

The switch doe s not have a power switch; it is powered on when it is connected to either an active AC power sou rc e, u sing the AC power connector, or an active HP RPS, using the RPS power connector. Using the AC power connector, the switch automatically adjusts to any voltage between 100-127 and 200-240 volts and ei th er 50 or 60 Hz. There ar e n o voltage range settings required.

Switc h 20 8/ 22 4 De sc r ipt io n

RPS power connector

AC power connector

Redundant Power Suppl y (RPS) Connector

The RPS connector allows you to connect this switch to the HP J2962A Redundant Power Supply. A single RPS shares the load with up to 4 switches. The RPS has redundant power supplies to keep the switch up and running; it

is used in place of the switch’s sta n da rd power cable (NOT in addition to it).

Expansio n Slot

The Expansion Slot is used to add connectivity/functionality through modules such as the HP J3138A AdvanceStack Internet Router Module to the switch. Other modules may be available. Contact your HP-authorized dealer or reseller for more informa tio n.

Expansion Slot

Expansion s lot modules have a colored extractor handles that match a color bar on the switch. Before in sert ing a module, verify that the color matches.

2-5

Switch 208/224 Description

Switch Operation

Address Table Operation

Address Learning. As devices are connected to the switch ports, either directly or through hubs or other switches that are connect to the switch, the MAC addresses of those devices are learned automatically and stored in the

Switch 208/224’s 8000-entry address table. The switch also identifi es the number of the port on which each address is learned so it knows the network location of each device.

Forwarding, Filtering, Flooding. When the switch receives a packet, it determines the destination address, looks for the address in the address table. Based on the port l ocation of that address, the switch then determines wh ether 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 recei ved, the packet is forwarded to the destination

Switc h 20 8/ 22 4 De sc r ipt io n

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 t he switch does not lose bandwidth dealing with unnecessary traffic.

■ flood - whenever a new destination address is found in a packet, the

destination address will not yet be in the switch’s address table and the Switch 208/224 cannot know whether to forward or filter out the packet. In this case, it sends the packet to all the 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 p acket . Then, all future packets destined for that ad d ress are forwarded or filtered out appropri ately.

2-6

Network Moves an d Changes. When devices are moved in the network, and become connecte d to a differ ent switch por t, the Switch 2 08/224 auto matically recogniz es t he change and update s the addr ess table with th e new port location of the d evice. Communi catio n with t he device is au tomaticall y ma intained, without any address table manipulation being required.

Switch 208/224 Description

Switch Operation

Simultaneous Network Communications

In addition to traffi c isolation benef its provided by the Switch 208/ 224 address table operation , the sw itch also enhances network perf orm ance because it can conduct multiple, simultaneous network connections. In the case of the Switch 224T, with its 26 ports, it can have up to 13 separ ate network connections going simultaneously. Instead of sharing the network bandwidth, as in connections to a hub, each connection has its own 10 Mbit/s or 100 Mbit/s bandwidth to use.

Switc h 20 8/ 22 4 De sc r ipt io n

2-7

Troubleshooting

This chapter describes how to troubleshoot your Switch 208/224. Note that if you have a Switch 208/224 Management Module, you can troubleshoot your switch using software. See the HP AdvanceStack Switch 208/224 Manage- ment Module Installation and Reference Guide for more information.

This chapter descri b es the fo llowing:

■ solutions to common problems

■ LED error indications

■ diagnostic tests

■ resetting the switch

■ HP Customer Support Services

Solutions to Common Problems

Most problems are caused by the followin g situations:

■ Incorrect switch-to-switch or switch-to-hub connections. If you

have connected your switch to another switch or a hub by using twistedpair cabl e from an RJ-45 MDI-X connector on your swit ch to the same t ype of connector on the other switch or hub, you must use a crossover cable. If you have used a straight-through cable, the connection will not work. The LED for the port you are using will not come on when you connect the cable.

Use crossover twisted-pair cable for switch-to-switch or switch-to-hub connections, and straight-through cable for switch-to-end node connec-

tions. See appendix A, “Cables and Connectors” for pinouts and correct cable wiring for crossover and straight-through twisted-pair cables.

■ Faul ty cable or cable is loose. Look for loose or obviously faulty

connections. If they appear to be OK, try a differen t cab le.

■ Non-standard cables. Non-standard and miswired cables may cause

numerous network collisions, and can seriously impair network performance. Use a new correctly-wired cable or compare your cable to th e

Troubleshooting

3-1

Troubleshooting

Solution s to Common Problems

■ Imprope r Netw or k Topo log ie s . It is important to make sure you h ave

■ Switch 208/224-S pe cific Connectivity Situations:

cable in appendix A, “Cables and Connectors” for pinouts and correct cable wiring. A catego ry 5 cable tester is a recommended tool for ever y 100Base-T network installation.

a valid network topology. Common topology faults include excessive cable length and excessive repeater delays between 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. Refer to the guide entitled Designing HP AdvanceStack Workgroup Networks for topology configuration guidelines. This guide is included on the HP AdvanceStack Products CD-ROM that comes with the HP Switch 208/224 Management Module. The guide can also be found online at the HP World Wide Web site, http://www.hp.com/go/network_city.

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 severel y impact your network performance. If you wish to build redundant paths between important nodes in your network to provide some fault tolerance, you should install a Switch 208/224 Management Module and enable Spanning Tree Protocol support on the switch. This ensures that only one of the redundant paths is active at any time, thus avoiding data path loops.

Troubleshooting

For the Switch 208T and 224T, there are a few specific network connection situations you must avoid:

• Wrong transceiver type -- You have installed an HP 100VG transceiver into t he trans ceiv er s lot. The s lot is specifi cal ly design ed to be used with the HP 100Base-T transceiver s. Make sure that you install

only “B” model or later 100Base-T transceivers in this slot, for example HP J3192B.

• Wron g network speed con nected -- You have connected a 10 Mbit/s cab le to one of th e 100 Mbit /s ports . On t he Swit ch 208 /224, the 100 Mbit/s ports cannot operate at 10 Mbit/s.

• Expansion Module installed -- When you install an optional expansion module in the back of the switch, it uses the port 1 circuitry to communicate to the rest of the network through the switch. In this case, the port 1 RJ-45 connector (and only that connector) becomes disabled, as shown by the port 1 disabled LED on the front of the switch .

3-2

Troubleshooting

LED Error Indications

LED patterns ind icating problems Diagnostic Tips

Power Fault RPS Port OFF * * * Check th e po wer cor d a nd p ower sou rce. I f they ar e OK, the swi tch

may have to be replaced. Contact your HP-authorized LAN dealer or HP representati ve for assistance.

ON OFF * OFF when

cable first connect ed

ON Flashing * Flashing This could on ly occur wi th the port LED for the 100 M bit/s tran sceiver

ON Flashing Flashing * The Redundant Power Supply (RPS) has experienced a fault and is

OFF * OFF and

you are using an RPS

ON Flashing * Variable A fault ha s been detected dur ing self test in a switch comp onent that

ON ON for a

prolonged period

* This LED i s not important for the diagnosis.

The flas hing behavio r is a regular pulse once every 1.6 seconds, approximately.

* Variable, al l

* The swi tch is not rec eiving power f rom the Redund ant Power Supply

may be ON

Link bea t has no t be en de te cte d on t he po rt. Chec k th at the cabl ing on the ind icated port is connected properly. Faulty or improperly wired cabl es are common; try a different cable.

For the 10 0 Mbit/s ports, verif y that you are u sing category 5, or better , UTP or the appropriate fiber -optic cable. Also, t he you have not connected a 10 Mbit/s device to the port.

If you have a Ma nagement Modul e in the switch, use HP AdvanceSt ack Assistant or the switch console to determine the state of the port:

- Determine if the port was disabled. Re-enabl e if desired.

port, and onl y whe n a 100 VG trans cei ver module ha s been ins tall ed in the slot. Only 100Base-TX and 100Base-FX transceivers should be insta lled in the tr ansceiver slot.

now using its backup powe r capabilities. See the documentation provided with the RPS for tro ubleshooting.

(RPS). If you have an RPS connect ed, check the status of the RPS and check th e cable an d power conn ections on bo th the swi tch and the RPS.

controls network communications throug h mu ltiple switch ports . Try power cycling the switch. If the error persists, the switch may have to be repl ace d. Co ntact your HP-aut hor ized L AN deal er or HP representative for assistance.

A switch hardware failure was dete cted during sel f-test. Self-test does not complete so the LEDs will stay on longer than 60 secon ds.

Power cycle the switch. If this condition persists, the switch may have to be repl ace d. Co ntact your HP-aut hor ized L AN deal er or HP representative for assistance.

Troubleshooting

3-3

Troubleshooting

Diagnos tic Tests

Diagnostic Tests

When a Management Module is instal led, the HP AdvanceS tack Assistant and switch console software pr ov id e tests, indicators, and an event log that can be used to monitor the switch and its network connections. See chapter 7,

“Troubleshooting”, in the HP AdvanceStack Switch 208/224 Manage m ent Module Installation and Reference Guide for more informatio n.

Testing the Switch

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

■ Remove and reinsert the power cord for the switch.

■ Press the Reset button on the optional Switch Management Module (if

installed).

Testing Twisted-Pair Cabling

Troubleshooting

If you think the cable should work but still isn’t working, it may not be compatible with the IEEE 802.3 T ype 10Base-T or 100Ba se-T standards. The twisted-pair cables attached to the Switch 208/224 must be compatible with these standard s.To veri fy that your cabl e is com patible with th ese sta ndards, use a qualified cable test device.

HP also offers a wire testing service. Contact your HP-authorized LAN dealer or your local HP sales office for more information.

Note Make sure that you are using the correct cabling type for each connection.

The switch UTP ports are all wired as MDI-X. For connecting end nodes and other MDI-type devices, use “straight-through” cable. For connecting hubs, other switches, and other MDI-X devices , use “crossover” cab le. See appendix A, “Cables and Connectors” for the pinouts for these cables.

Also, make s ur e that you hav e no t inadverten tly c onnect ed a 10 Mbit/ s devic e to one of the 100 Mbit/s ports, or a 100 Mbit/s device to one of the 10 Mbit/s ports.

3-4

Troubleshooting

Diagnostic Tests

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 HP LAN adapte rs, you can use the “Link Test” op tion fro m the adapter’s test p rogram (for example, HPLANSet) to verify that the entire communication path between the two PCs is functioning correctly. See your LAN adapter documentation for more information on running the Link Test.

Note Link Test can be performed from end node to end node through the switch

even if the switch d oes not have a Swi tch M anagemen t Module inst alled . But, with the module, the switch itself cannot respond to any network connectivity tests (link test, Ping test, or IPX Ping test).

Testing Switch-to-Device Networ k C om mu nications

If you have a Switch Management Module installed in the switch, you can perform the following communication tests to verify that the network is operating correctly between the switch and any connected device that can respond correctly to the communication test.

■ Link Test -- a physical layer test that sends IEEE 802. 2 test pac kets to any

device identified by its MAC address

■ Ping Test -- a network layer test used on IP networks that sends test

packets to any device iden tified by its IP address

■ IPX Ping Test -- a network layer test used on IPX networks that sends test

packets to any device iden tified by its IPX address

Troubleshooting

These tests can be performed through the switch console interface from a terminal connected to the Switch Management Module. See the

HP AdvanceStack Switch 208/224 Management Module Installation and Reference Guid e for more information.

These tests can also be performed from an SNMP network management station running a program that can manage the sw itch , for example, HP AdvanceStack Assistant.

3-5

Troubleshooting

HP Customer Support Services

Resetting the Switch

You can reset the switch by unplugging and plugging back in the power cord; each switch does n o t h ave a reset button. By reinserting the power co rd, the switch performs the power-on self-test. No confi gu ration is changed.

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 automated electronic services including:

■ the World Wide Web

■ HP BBS

■ HP FTP Library Service on the Internet

■ CompuServe

■ HP Network Phone-In Support (NPS)

■ HP FIRST FAX Retrieval Service

Troubleshooting

See the perforated card at the beginning of this manual for information on how to use these services to get technical support.

Your HP-authorized network reseller can also provide you with assistance, both with services that they offer and with services offered by HP.

3-6

Cables an d Connecto rs

This appendix lists cables that have b een tested and ver ified for use w ith the HP Switch 208/224. It also includes minimum pin-out infor mation so, if you wish to use an unlisted cable, you can verify th at th e cab les used in your installation are correctly wired. Note that each p in -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.

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.

Twisted-Pair Cable/Connector Pin-Outs

The RJ-45 ports (10 Mbit/s and 100 Mbit /s, both fixed and tran sceiver) on the Switch 208/224 are wired as MDI-X ports. The type of twisted-pair cable you

connect to these ports (either “straight through” or “crossover”) depends on the type of device at the other end of the cable.

The basic rule is, when connecting same-type ports together (for example MDI-X-to-MDI-X), use crossover cable; when connecting opposite-type ports together (for example MDI-X-to-MDI), use straight-through cable.

These additional rules apply:

■ All twisted-pair wires used must be twisted through the entire length of

the cable. The wiring sequence must conform to AT&T 258A (not USOC). See “Twisted-Pair Cable Pin Assignments ” la ter in this appendix for a listing of the signals used on each pin.

■ For connections to the 10 Mbit/ s po rts, you can use Category 3, 4, or 5

unshielded twisted-pair cable, as supported by the IEEE 802.3 Type 10Base- T sta n da r d.

■ For connections t o the 100 Mbit/s por ts, use Category 5 only, as supported

by the IEEE 802.3u Typ e 100Base-TX stand a rd.

A-1

Cables and Connectors

Twisted -Pair Cable/ Connector Pin-Outs

Twisted-Pair Cable for Switch (MDI-X) to Computer (MDI) Network Connection

To connect PCs or other MDI network devices to these ports, use a “straightthrough” cable.

Connector “ A” Connector “B”

Straight-through cable

white/orange orange/white

white/green green/white

Cables and Connectors

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, a nd 8 ar e not u sed in t his ap plicatio n, al tho ugh they may be wir ed in the cable.

A-2

Twisted-Pair Cable/Connector Pin-Outs

Cables and Connectors

Twisted-Pair Cable for Switch (MDI-X) to Hub or Switch (M D I-X) Network C onnection

To connect hubs or switches or other MDI-X network devices to these ports,

use a “crossover” cable.

Connector “A”

Crossover cable

white/orange orange/white

white/green green/white

Connector “B”

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, a nd 8 ar e not u sed in t his ap plicatio n, al tho ugh they may be wir ed in the cable.

A-3

Cables and Connectors

Fiber-Optic Cables

Twist ed-Pair C a ble Pin As signmen ts

Twisted-Pair Straight-Through Cable

Switch End (MDI-X) Computer, Transceiver, or

Other MDI Port End

Signal Pins Pins Signal

(receive +) (receive -) (transmit +) (transmit -

1 2 3 6

(transmit +) (transmit -) (receive +) (receiv e -)

Twisted-Pair Cross-Over Cable

Switch End (MDI-X) Hub or Swi tc h P ort, or Othe r

MDI-X Port End

Signal Pins Pins Signal

(receive +) (receive -) (transmit +) (transmit -)

1 2 3 6

6 3 2 1

(transmit -) (transmit +) (receiv e -) (receive +)

Fiber-Optic Cables

Fiber-optic cables connected to an HP fiber-optic transcei ver in stalle d in the

switch’s transceiver slot must be 1300 nm wavelength, multimode cable conforming to the ISO/IEC 793-2 type B1, and ITU-T G.652 standards. To connect to the HP 100Base-FX Fiber-Optic Transceiver Module, the cabl es must have SC-type connectors.

Cables and Connectors

A-4

Specifications

Physical

Electrical

The HP Switch 208T and 224T automatically adjust to any volta ge be twee n 100-127 and 200-240 volts and either 50 or 60 Hz.)

Width: 44.2 cm (17.4 in ) Depth: 29.8 cm (11.7 in) Height: 6.6 cm Weight:

Switch 208T Switch 224T

AC voltag e: 100-127 vo lts 200-240 volts Maximum current: 1.4 A 0.8 A

4.4 kg (9. 71 lb)

4.5 kg (9. 95 lb)

Specifications

Frequen cy range: 50/60 Hz 50/60 Hz

Environmental

Operating Non-Operating

Temperat ure: +0

Relat i v e hu midi ty: (non-condensing)

Maxim um altitu de : 4. 6 km (1 5,000 ft) 4.6 km (1 5,000 ft )

°C to +55°C

(32

°F to 131°F)

15% to 95%at 40

-40 (-40

°C (104°F) 15% to 90%

at 65

°C to 70°C

°F to 158°F)

°C (149°F)

B-1

Specifications

Connectors

■ The 10 Mbit/s RJ -45 twisted- pair ports are co mpatible with t he IEEE 802.3

Type 10Base-T stand ard.

■ The 100 Mbit/s RJ-45 twisted -pair port is compatible with the IEEE 802.3u

standard.

Specifications

Electromagnetic

Verifie d to :

FCC part 15 Class A CISPR22 / EN 55022 Class A VCCI Class 1

Immunity

EN50082-1

See the Declaration of Confor mity for additional informati on at the end of

appendix C, “Safety and Regulatory Statements”.

Safety

Complies with

IEC 950: (1991)+A1,A2/.EN60950 I(1992)+A1,A2 UL1950 CSA 950 NOM-019-SCFI-1994

Acoustic Noise

Geraeuschemissio n LwA=53 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19

B-2

Safet y and Regulatory Statements

This chapter covers the following topics:

■ mounting precautions

■ power precautions

■ safety and regulatory statements

■ Dec lara tion of Conformity

Mounting Precautions

When you put a switch into a rack, follow these mounting precautions:

■ The rack or cabinet should be adequately secured to prevent it from

becoming unstab le an d/or fal ling over . The first switc h ( or si ngle s witch) should be mounted in a position toward the bottom of the rack for stability and to make it easier to stack the other switches on top.

■ Before mounting a switch, plan its location and orientation relative to

other devices and equipment. Also consider the cabling that will be attached to the switch and the ports th at will be used. Verify that there is room for the grouped cables to trail out from the side of the switch. Allow at least 7.6 cm (3 inches) in the front of the switch. In the back of the switch, allow at least 3.8 cm (1 1/2 inches) of space for the power cord .

■ Ensure that the switch does not overload the power circuits, wiring, and

over-current protection. To determine the possibility of overloading the supply circuit s, add together the amperage rat ings from all your switches (and other equipment ) inst alled on the same circuit s and compare th e 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 conn ect the switch to the circuit. See the Safety Statements in this chapter.

■ Do not install the sw itch in an enviro nment where th e operating a mbient

temperature might exceed 55°C (131°F).

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

Safety and Regulatory

Statements

C-1

Safety and Regulatory Statements

Power Precautions

Follow these precautions when unplugging and plugging in power to the switch as well as adding or removing modules.

Caution Before installing an optional module into the Expansion Slot, Management

Slot, or transceiver slot, unplug the switch. Damage to the switch or module could occur if you attempt to install the module without unplugging the switch. If you do not install an opti onal module, verify that the cover plates are covering the sl ot. A cover plate is requ ired not only for safe oper ation, but also to ensure proper switch cooling.

Caution If your installation requires a different power cord than the one supplied with

Statements

Safety and Regulatory

Note The switch does not have a power switc h; it is powered on when the power

cord is plugged in. The switch’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 installin g the swi tch, note th at the AC outlet must be in stall ed ne ar the equipment and should be easily accessible.

C-2

Safety Information

Safety and Regulatory Statements

Safety Information

WARNING A WARNING in the manu al denot es a haza rd t hat can cause inj ury

CAUTION A CAUTION in the manual denotes a hazard that can damage

Grounding

These are saf ety class I products and have protective earthing term inals. 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 im p aired, 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.

Documentat ion referenc e symbol. If the product is m arked with thi s symbol, refe r to th e prod uct d ocumenta tion to g et mor e inf ormati on about the product.

or death.

equipment . Do not proceed beyond a WARNING or CAUTION notice un til you

have understood the hazardous condi tions and have taken appropriate steps.

Safety and Regulatory

Statements

Servicing

There are no user-ser viceable parts inside th ese products. Any servici n g, 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.

C-3

Safety and Regulatory Statements

Inform ations concernant la sécurité

Informations concernant la sécurité

WARNING Dans la documentation, un WARNING indique un danger susceptibl e

CAUTION Un texte de mi se en gar de intit ulé CAUTION i ndiqu e un danger sus cep-

Symbole de r éfére nce à la docum entat io n. Si l e prod uit est m arqu é de

ce symbol e, repo rtez- vous à la do cumenta tion du pr oduit a fin d'obteni r des inform ations plus détaillées.

d'entraîner des dommages corporels ou la mort.

tible de causer des dommages à l'équipement. Ne continue z pas au-delà d'une rubrique WARNING ou CAUTION

avant d'avo ir bi en com pri s l es cond it i ons pré sen tan t u n da nge r et pr i s les mesures appropri ées.

Statements

Safety and Regulatory

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 ins tallée aux born es du câblage d' entrée, sur le cordon d'al imentation 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 lo cal s'étend sur une zone desservie p ar plus d'un sys tème

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 précautio n s.

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 cord o n d'alimentation.

C-4

Safety and Regulatory Statements

Hinweise zur Sicherheit

Symbol f ür Dokumentationsverweis. Wenn das Produkt mit diesem

WARNING Symbol für Dokume ntationsverweis. Wenn das Pro dukt mit d iesem

Symbol mar kiert i st, sch lagen S ie bitt e in der Pr odukt dokumentat ion nach, um mehr Informati o nen über da s Produkt zu erhalten.

CAUTION Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem

Symbol mar kiert i st, sch lagen S ie bitt e in der Pr odukt dokumentat ion nach, um mehr Informati o nen über da s Produkt zu erhalten.

Fahren Sie nach dem Hinweis W A RNING oder CAUTION erst fort, nachdem Sie den Gefahren zustand 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 Stromvertei-

lungssystem beli efert wird, müss en Sie sich ver gewissern, 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 Metallbestan dteile des Netzwerkes Vorsich t wa lten lassen.

Dieses Gerät enthält innen keine durch den Benutzer zu wartenden Teile. Wartungs-, Anpassungs-, Instandhaltungs- oder Reparaturarbeiten dürfen nur von geschultem Bedienungspersonal durchgeführt werden.

Safety and Regulatory

Statements

Dieses Gerät hat keinen Netzschalter; es wird beim Anschließen des Netzkabels eingeschaltet.

C-5

Safety and Regulatory Statements

Considerazioni sulla sicurezza

WARNING La dicitur a WARN INGdenot a un pe ri colo che può cau sar e lesi oni o

CAUTION La dicituraCAUTION denota un pericolo che può danneggiare le

Simbolo di riferiment o alla docume ntazione . Se il prodotto è cont ras-

segnato da questo s imbolo, far e riferimen to alla documentazi one sul prodotto per ulteriori informazi oni su di esso.

morte.

attrezzature. Non procede re oltre un avv iso di WARNING o di CAUTI ONprima di

aver compr eso le con dizioni di ris chio e a ver provv eduto al le misur e del caso.

Statements

Safety and Regulatory

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 danneggiament o 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 lo r o;

■ i cavi LAN possono occasio nalmente andare soggetti a peric olose tensioni

transitorie (ad esempio, provocate da lampi o disturbi nella griglia d'alimentazion e d ella società elettri ca); siate cauti nel toccar e pa rti 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.

C-6

Safety and Regulatory Statements

Consideraciones sobre seguridad

WARNING Una WARNING en la documentación señala u n riesgo que podría

CAUTION Una CAUTION en la documentación señala un riesgo que podría

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 ali mentaci ón eléctr ica hasta las bornas de los cables de entrad a d el ap arato, el cabl e de alim entación o el j uego de cable de alimentación suministrado. Si existe la probabilidad de que la protección a tierra haya sufri do desperfectos, desenchu far el cable de alimentaci ón hasta haberse subsanado el problema.

Puesta a tierra del cable de la red local (LAN):

■ Si la LAN abarca un área cuyo suminis t ro 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 pelig ro (rayos o alter aciones en la red de energía eléctrica). Manejar con precaución los componentes de metal de la LAN que estén al descubierto.

Símbolo d e referencia a la documentac ión. Si el producto va marcado con este símbolo, consultar la document ación del producto a fin de obtener mayor infor m ación sobre el producto.

resultar en lesiones o la muerte.

resultar en averías al equipo. No prose guir después de un sí mbolo de WAR NING o CAUTI ON hasta

no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas.

Safety and Regulatory

Statements

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.

C-7

Safety and Regulatory Statements

Safety Information (Japanese)

Statements

Safety and Regulatory

C-8

Safety and Regulatory Statements

Regulatory Statements

FCC Class A Statement (for U.S.A. Only):

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuan t to Part 15 o f the FCC Rules. These limits are designed to provide reason able protection against h armful 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 har mful inte rference in which case the user will b e required to correct the interference at his own expense.

VCCI Class 1 (For Japan Only) when using unshielded cables

Safety and Regulatory

Statements

European Community

This equipment complies with ISO/IEC Guide 22 and EN55022 Class A with unshielded cables and EN55022 Note

This is a Class A product. In a domestic environment, this product may cause radio interferenc e, in which case the user may be required to take adequate measures.

Canada

This product complies with Class A Canadian EMC requirements.

C-9

Safety and Regulatory Statements

Declaration of Conformity

The following Declaration of Conformit y for the HP AdvanceS tack Switch 208T and 224T co mplies with I SO/IEC Guide 22 and EN 45014. The decl aration identifies the product, the manufacturer’s name and address, and the applicable specifications that are recogniz ed in the Eur o pe an commun ity.

Statements

Safety and Regulatory

C-10

Index

Numerics

10 Mbi t/s ports

location on switch … 2-2 100 LED… 2-3 100Base-FX transceiver port

cables used wi th … 1-3 100Base-T ports

LEDs for … 2-3

location on switch … 2-2 100Base-T transceivers … 1-5 100Base-TX ports

cables used wi th … 1-3 10Base-T ports

LEDs for … 2-4

location on switch … 2-2

A or B port LED … 2-3 address l earning … 2-6 address t able

automatic address lear ning … 2-6

filter in g ou t tr affic … 2- 6

flooding traffic … 2-6

forwardi ng traffic… 2-6

moves and changes … 2-6

operatio n… 2-6

back of switch

descrip tion … 2-5

expansion slot … 2-5

power connector … 2-5 backbone swit ch

topology with … 1-17 bandwidth, how sw itch enhances… 2-7

cabinet

mounti n g the switch in… 1-8 cable manage ment … 1-18

cables

category 3, 4, 5… A-1 connecting cables to switch ports… 1-13 crossover cable pinout … A-4 fiber-optic… A-4 infrastructur e requirements … 1-3 managing … 2-5 straight-through cable pinout … A-4 twisted-pair connector pin-outs … A-1

crossover cable

pin-out … A-4

description

back of switches… 2-5 front of switches… 2-2 switch… 2-1

desk t o p sw itch

sample topology… 1-16

diagnostic tests… 3-4

end-to-end connectivity… 3-5 testing the switch only… 3-4 testing twisted-pair cabling… 3-4

Index

expansion modul es

effect on swi tch port 1 … 1-5, 3-2 installation… 1-5

Expansion Slot

allowed modules … 2-5 LEDs for … 2-3

Fault LED … 1-7, 2-3, 3-3 Fdx LED … 2-3 features

Switch 208/224 … 2-1

Switch Management Module… 2-4 fiber-op tic cables… A-4 filtering out traffic … 2-6

Index – 1

flashing LED

error indications… 3-3 flooding traffic … 2-6 forwardi ng traffic… 2-6 front of switch

descrip tion … 2-2

horizontal surface

mounting swi tch on … 1-11 HP Redundant Power Supply (RPS)

connecting to switch… 1-12

connector… 2-5

LED … 2-3

precautions when using … 1-12

Management Module, Switch

diagnostics with … 3-4 features… 2-4 installing … 1-4

Management Slot

about … 2-4 MDI-X to MDI network cable … A-2 MDI-X to MDI-X network cable … A-3 mounting precautions … C-1 mounting the switch

in a rack … 1-8

on a horizontal surface … 1-11

on a wall … 1-11 moves and changes

effect on address table … 2-6

Index

included parts… 1-2 installing

optional modules … 1-4 Switch 208/ 224 … 1-1 transceivers … 1-5

IPX ping te st … 3-5

LEDs

10 Mbi t/s ports … 2-4 100 … 2-3 100 Mbit/s ports … 2-3 A or B… 2-3 descriptions of … 2-3 error indications… 3-3 Expansion Slot… 2-3 Fault… 2-3 Fdx … 2-3 port 1 disabled… 1-5, 2-3, 3-2 Power … 2-3 RPS … 2-3

link test … 3 -5

network ports

connecting to … 1-13

LEDs for … 2-3

types of … 2-2

ping test… 3-5 port 1 disabled LED… 1-5, 2-3, 3-2 ports

connecting to … 1-13

LEDs for … 2-3

types of … 2-2 power

connecting switch to… 1-12

precautions… C-2

using RPS … 1-12 power connector … 2-5 Power LED … 1-7, 2-3, 3-3 precaution s

mounting … C-1

power … C-2

2 – Index

rack

mounti n g the switch in… 1-8 precautions when using … C-1

resetting the switch… 3-6

troubleshooting procedur e… 3-4

RPS (Redundant Power Supply)

connecting to switch… 1-12 LED … 2-3

safety information… C-1 segment switch

sample topology … 1-15 slow flash rate definition… 2-4 specifications… B-1 straight- through cable

pin-out… A-4 switch

descrip tion … 2-1

features… 2-1

features added with Switch Management

Module… 2-4 mounting in a rack or cabinet … 1-8 mounting on hor izontal surface… 1-11 mounting on wall… 1-11 operatio n… 2-6 specifications… B-1

Switch Management Module

diagnostics with… 3-4 features… 2-4 installing… 1-4

switch operation

descrip tion … 2-6 verif ying after inst a llation … 1-6

transceivers

installation… 1-5 supported types… 1-5 when wrong type is use d… 3-2

troubleshooting … 3-1

common network problems … 3-1 diagnostic tests… 3-4 effects of improper topology… 3-2 effects of non- standard cables… 3-1 switch-specific conn ectivity situations… 3-2 testing the switch… 3-4 testing t he twisted-pair cables… 3-4

twisted-pair cable

crossover cable pin-out … A-4 pin-outs … A-1, A-4 straight-through cable pin-out … A-4 switch-to-computer connection… A-2 switch-to-switch or hub connection … A-3 testing… 3-4

twisted-pair port LEDs

10 Mbit/s … 2-4 100 Mbit/s … 2-3

wall

mounting switch on… 1 -11

Index

testing

end-to-end communications… 3-5 switch-to-device communications … 3-5 twisted-pair cabling … 3-4

topologies

effects of improper topology … 3-2 samples of … 1-15

Index – 3

Technical inf ormation in this document is subject to change without notice.

Manual Part Number 5966-5225

*5966-5225*

HP J3175A, J3177A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

HP Customer Support Services

How to get the latest software/agent firmware

World Wide Web

HP FTP Library Service

CompuServe

HP BBS

HP FIRST Fax Retrieval Service

Additional HP Support Services

Contents

Included Parts

Installation Steps

1. Prepare the Installation Sit e

2. Install Any Optional Modules

Installing Modules

Installing Transceivers

3. Verify the Switch’s Operat ion

LED Behavior:

4. Mount the Sw itch

Mounting the Switch in a Rack or Cabinet

Mounting the Switch on a Wall

Mounting the Switch on a Horizontal Surface

5. Connect the Switch to a Power Source

6. Connect the Network Cables

100Base-T Xcvr Slot

Sample Net w ork Topologies

As a Segment Switch

As a Desktop Switch

Connecting to a Backbone Switch

Cable Management

Where to Go From Here

Features

Front of the Switches

Network Ports

LEDs

Management Slot

Management Module Features

Back of the Switches

Power Connecto rs

Redundant Power Suppl y (RPS) Connector

Expansio n Slot

Switch Operation

Address Table Operation

Simultaneous Network Communications

Solutions to Common Problems

LED Error Indications

Diagnos tic Tests

Testing the Switch

Testing Twisted-Pair Cabling

Testing End-to-End Network Communications

Testing Switch-to-Device Networ k C om mu nications

HP Customer Support Services

Resetting the Switch

Twisted-Pair Cable/Connector Pin-Outs

Fiber-Optic Cables

Twist ed-Pair C a ble Pin As signmen ts

Twisted-Pair Straight-Through Cable

Twisted-Pair Cross-Over Cable

Physical

Electrical

Environmental

Connectors

Electromagnetic

Safety

Acoustic Noise

Mounting Precautions

Power Precautions

Safety Information

Inform ations concernant la sécurité

Hinweise zur Sicherheit

Considerazioni sulla sicurezza

Consideraciones sobre seguridad

Safety Information (Japanese)

Regulatory Statements

FCC Class A Statement (for U.S.A. Only):

European Community

Canada