Hp 2620-48-PoE+ (J9627A) User Manual [ru]

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Power over Ethernet

HP E2620 Switches

Installation and Getting Started Guide

HP E2620 Switches

Installation and Getting Started Guide

Publication Number

5998-0902 January 2013

Applicable Products

HP E2620-24 Switch (J9623A) HP E2620-24-PPoE+ Switch (J9624A) HP E2620-24-PoE+ Switch (J9625A) HP E2620-48 Switch (J9626A) HP E2620-48-PoE+ Switch (J9627A) HP 600 Redundant and External Power Supply (J8168A) HP 620 Redundant and External Power Supply (J8696A) HP 630 Redundant and/or External Power Supply (J9443A)

Disclaimer

HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

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

Warranty

See the Customer Support/Warranty booklet included with the product.

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.

Hewlett-Packard Company 8000 Foothills Boulevard, m/s 5552 Roseville, California 95747-5552

www.hp.com/networking

Safety

Before installing and operating these products, please read the “Installation Precautions” in chapter 2, “Installing the E2620 Switches”, and the safety statements in appendix C, “Safety and EMC Regulatory Statements”.

1 Introducing the Switch

Front of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

LED Mode Select Button and Indicator LEDs . . . . . . . . . . . . . . . 1-10

Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Clear Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Back of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

RPS and EPS Input Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

2 Installing the Switch

Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2. Verify the Switch Passes Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

LED Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

3. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Rack Mounting the E2620-PoE+ switches . . . . . . . . . . . . . . . . . . 2-10

Rack Mounting the Non-PoE+ Switches . . . . . . . . . . . . . . . . . . . . 2-12

Flat Wall Mounting (non-PoE+ models only) . . . . . . . . . . . . . . . . 2-14

Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

4. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-15

5. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

iii

6. Installing or removing SFP transceivers (mini-GBICs) . . . . . . . . . 2-17

Installing the SFP transceivers: . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Removing the SFP transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Connecting Cables to SFP transceivers . . . . . . . . . . . . . . . . . . . . 2-18

7. (Optional) Connect an External Power Supply to the Switch . . . . 2-19

RPS/EPS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Operating Characteristics of the external power supplies . . . . . 2-20

External Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

External Power Supply Connectivity . . . . . . . . . . . . . . . . . . . . . . 2-23

8. (Optional) Connect a Console to the Switch . . . . . . . . . . . . . . . . . . 2-25

Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Sample Network Topologies for

Non-PoE+ Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

As a Segment Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

Connecting to a Backbone Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Sample Network Topologies for PoE+ Switches . . . . . . . . . . . . . . . . . . . . 2-31

As a Desktop Switch Implementing PoE+ . . . . . . . . . . . . . . . . . . . . . . 2-31

As a Segment Switch Implementing PoE . . . . . . . . . . . . . . . . . . . . . . . 2-32

Stacking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

3 Configuring the Switch

Recommended Minimal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Using the Console Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Using the IP Address for Remote Switch Management . . . . . . . . . . . . . . . . 3-5

Starting a Telnet Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Starting a Web Browser Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

4 Troubleshooting

Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

LED patterns for General Switch Troubleshooting . . . . . . . . . . . . . . . 4-4

LED Patterns for PoE Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Testing Switch-to-Device Network Communications . . . . . . . . . . . . 4-11

Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . 4-11

Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . . . . . . 4-12

Downloading New Switch Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

A Switch Specifications

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

RPS/EPS Electrical Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

BTU Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

RPS/EPS Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

B Cabling and Technology Information

Cabling specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Technology distance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Mode Conditioning Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Installing the Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Straight-through Twisted-Pair Cable for

10 Mbps or 100 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . B-6

Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Crossover Twisted-Pair Cable for

10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . . B-7

Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Straight-Through Twisted-Pair Cable for

1000 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

C Safety and EMC Regulatory Statements

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Informations concernant la sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Hinweise zur Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Considerazioni sulla sicurezza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Consideraciones sobre seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

Informações de Segurança . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Safety Information (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

Safety Information (China) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8

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

U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Australia/New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10

Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10

European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11

D Recycle Statements

Waste Electrical and Electronic Equipment (WEEE) Statements . . . . . . D-1

Index

vii

viii

Introducing the Switch

HP E2620-24 Switch (J9623A)

HP E2620-48 Switch (J9626A)

HP E2620-24-PPoE+ Switch (J9624A)

HP E2620-24-PoE+ Switch (J9625A)

HP E2620-48-PoE+ Switch (J9627A)

The HP E2620 Switches are multiport switches that can be used to build highperformance switched workgroup networks. These switches are store-andforward devices that offer low latency for high-speed networking. The nonPoE and PPoE+ switches support Redundant power supply (HP 600 RPS/ EPS). The E2620-PoE+ Switches also support Redundant and External Power Supply, and Power over Ethernet (PoE/PoE+) technologies.

1-1

Introducing the Switch

Throughout this manual, these switches will be referred to as the E2620 Switches and the E2620-PoE+ Switches.

■ The E2620 Switches, have either 24 or 48 auto-sensing 10/100Base-TX RJ-

45 ports with four Gigabit Uplink ports, two RJ-45 and two mini-GBIC (Small Form Factor Pluggable (SFP)) slots.

The RJ-45 Gigabit Uplink ports are auto-sensing 10/100/1000Base-T. These ports operate independently, they are not dual-personality and do not support PoE+ power.

Table 1-1. Optional Network Connectivity, Speeds and Technologies

Transceiver Form-

Factor and

Connector

Speed Technology

100 Mbps

1 Gbps

For supported transceivers, visit www.hp.com/networking/support.

– In the first textbox, type J4858 (for 100-Mb and Gigabit information). – Select any of the products that display in the dropdown list. – Select Product support information. Then click on Manuals and find the Transceiver

Support Matrix.

For technical details of cabling and technologies see "Cabling and Technology Information" in the appendices.

100-FX Fiber (multimode) LC

100-BX Fiber (single mode) LC

1000-T Copper (twisted-pair) RJ-45

1000-SX Fiber (multimode) LC

1000-LX Fiber (multimode or single mode) LC

1000-LH Fiber (single mode) LC

1000-BX Fiber (single mode) LC

Cabling

SFP ("mini-GBIC")

Connector

The E2620-PoE+ Switches incorporate two additional features. These switches offer two types of power, one for switch AC operating power, and the other for Power over Ethernet (PoE+) power:

1-2

Introducing the Switch

■ Power-over-Ethernet or PoE+ power - PoE+ technology allows IP

telephones, wireless LAN Access Points and other appliances to receive power as well as data over existing LAN cabling, without needing to modify the existing Ethernet infrastructure. The E2620-PoE+ Switches are designed with an internal PoE+ power supply capable of providing 364 watts of PoE power (126 watts on the E2620-24-PPoE+. The PPoE+ (Partial PoE+) switch provides 24 Ethernet ports, 12 of which can supply PoE+ power).

All of the Switch E2620-PoE+ ports can provide up to 30 watts (or 4 ports at 30 watts, or 8 ports at 15.4 watts on the E2620-24-PPoE+) of PoE+ power to connected devices. For further information regarding PoE/PoE+ power, see the HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide, which is on the HP Web site at

www.hp.com/

networking/support.

■ Redundant and External Power Supply Support - The E2620 non-

PoE+ and PPoE+ switches can be connected to an HP 600 Redundant and External Power Supply (J8168A), hereafter referred to as the 600 RPS/ EPS, for RPS power only. As an RPS unit, the 600 RPS/EPS will provide all the AC power necessary to keep the switch running should the switch internal AC power supply fail. The 600 RPS/EPS can not be used for EPS (PoE+) power for the E2620-PoE+ switches.

■ The E2620 PoE+ switches can be connected to an HP 620 Redundant and

External Power Supply (J8696A), hereafter referred to as the 620 RPS/ EPS, for RPS only. As an RPS unit, the 620 RPS/EPS will provide all the AC power necessary to keep the switch running should the switch internal AC power supply fail. The 620 RPS/EPS can not be used for EPS (PoE+) power for the E2620-PoE+ switches.

■ Also, the E2620 PoE+ switches can be connected to an HP 630 Redundant

and/or External Power Supply (J9443A), hereafter referred to as the 630 RPS/EPS, and receive redundant power from that unit. As an EPS unit, the 630 RPS/EPS can supply up to 398 watts of PoE power to the switch if the internal PoE power supply of the switch should fail. When used with the Switch E2620-48-PoE+, the additional EPS power can provide up to 30 watts per port for 48 ports. For further information regarding the RPS/ EPS PoE+ capabilities, see the HP Power over Ethernet (PoE/PoE+)

Planning and Implementation Guide, or the HP Redundant and/or External Power Supplies Installation and Getting Started Guide which

is on the HP Web site at

www.hp.com/networking/support.

1-3

Introducing the Switch

Table 1-1. RPS/EPS Compatibility Matrix

Switch RPS Support EPS Support

HP E2620-24 (J9623A) 600 N/A

HP E2620-48 (J9626A) 600 N/A

HP E2620-24-PPoE+ (J9624A) 600 N/A

HP E2620-24-PoE+ (J9625A) 620/630 630

HP E2620-48-PoE+ (J9627A) 620/630 630

These switches can be directly connected to computers, printers, and servers to provide dedicated bandwidth to those devices, and you can build a switched network infrastructure by connecting the switch to hubs, other switches, or routers. In addition, the E2620 Switches offer full network management capabilities.

1-4

Front of the Switch

HP E2620-48 Switch (J9626A)

Power

and Fault

LEDs

RPS, Fan and Test

Status LEDs

Switch port LEDs

LED Mode select button

and indicator LEDs

Reset and Clear

buttons

10/100Base-TX RJ-45 ports1

Uplink ports

(1000Base-T

and mini-GBIC)

Console

Port

HP E2620-48-PoE+ Switch (J9627A)

Reset and Clear

buttons

LED Mode select button

and indicator LEDs

10/100Base-TX RJ-45 ports1

Uplink ports

(1000Base-T

and Mini-GBIC)

Switch port LEDs

RPS, EPS, Fan and

Test Status LEDs

Power

and Fault

LEDs

Console

Port

HP E2620-24 Switch (J9623A)

All 10/100Base-TX RJ-45 ports have the Auto-MDIX feature.

Two RJ-45 10/100/1000Base-T ports and two Mini-GBIC (SFP) slots.

Console

Port

Reset and Clear

buttons

Switch port LEDs

LED Mode select button

and indicator LEDs

10/100Base-TX RJ-45 ports1

Uplink ports

(1000Base-T

and Mini-GBIC)

RPS and Test

Status LEDs

Power

and Fault

LEDs

Introducing the Switch

Front of the Switch

1-5

Introducing the Switch

Front of the Switch

Switch LEDs State Meaning

Network Ports

■ 24, or 48 auto-sensing 10/100Base-TX ports.

All these ports have the “Auto-MDIX” feature, which means that you can use either straight-through or crossover twisted-pair cables to connect any network devices to the switch.

■ Two RJ-45 10/100/1000Base-T ports for high speed uplink.

■ Two mini-GBIC (SFP) slots for fiber uplinks.

LEDs

On the E2620 Switches, there are three groupings of LEDs:

■ switch status LEDs (Table 1-2)

■ port LEDs (Table 1-3)

■ Port LED Mode indicator LEDs (near the selector button) (Table 1-4)

Table 1-2. Switch Status LEDs

Power (green)

Fault (orange)

On The internal power supply is working properly.

Off No power connection. The switch is NOT receiving power.

Flashing2A failure of the internal power supply. It should be flashing simultaneously

with the Fault LED. (If an RPS is connected to the switch, the RPS is actively powering the switch, the RPS LED will be on.)

Off The normal state; indicates there are no fault conditions on the switch.

Flashing2A fault has occurred with a component on the switch. The Status LED for

the component with the fault will flash simultaneously.

On On briefly after the switch is powered on or reset, at the beginning of

switch self test. If this LED is on for a prolonged time, the switch has encountered a fatal hardware failure, or has failed its self test. See chapter 4, “Troubleshooting” for more information.

1-6

Switch LEDs State Meaning

Introducing the Switch

Front of the Switch

Locator (blue)

PoE (green/

orange)

RPS Status (green/

orange)

EPS Status (green)

On Flashing Off

Flashing/ orange

Flashing orange

Off

The Locator LED is used to locate a specific switch in an area full of switches. The LED can be set to be on solid or flash for a specified number of minutes (1-1440). The default is 30 minutes. Use the command “chassislocate”.

Normal operation. The switch is ready to supply PoE power

One or more ports has experienced a fault condition for PoE delivery. The

Fault LED will be flashing simultaneously. If it is a self test failure, the Test LED will be flashing simultaneously. When the switch is put in PoE LED Mode, The Mode LED for the port with the problem will also be flashing simultaneously.

One or more ports has an alert condition for PoE delivery, for example, an

oversubscription condition (not enough PoE power available). Only this LED will be flashing, the Fault LED is off. When the switch is put in PoE LED Mode, The Mode LEDs for the ports with the alert condition will also be flashing.

Normal operation. An external power supply is connected and operating correctly. The external power supply could be powering the unit.

An external power supply is connected but may be powering another

switch or the external power supply has experienced a fault. Only this LED flashes, the Fault LED is off.

An external power supply is not connected.

The switch is connected to an external power supply and operating correctly.

Fan (green/ orange)

Flashing orange

The external power supply has experienced a fault:

• There is a fan, overcurrent, power supply, or temp fault on the EPS.

• The Switch detects the EPS is present but cannot communicate with it. Check the Error Log on the switch for more information.

The switch is not connected to an external power supply or the EPS cable

Off

is connected but the external power supply is not powered up.

On The cooling fan is operating normally.

Flashing orange

The cooling fan has failed. The switch Fault LED will be flashing

simultaneously.

1-7

Introducing the Switch

Front of the Switch

Switch LEDs State Meaning

Te st (green/ orange)

Off The normal operational state; the switch is not undergoing self test.

On The switch self test and initialization are in progress after the switch has

been power cycled or reset. The switch is not operational until this LED goes off. The Test LED also comes on briefly when you “hot swap” a miniGBIC into the switch; the mini-GBIC is tested when it is hot swapped.

Flashing orange

The flashing behavior is an on/off cycle once every 0.8 seconds approximately, a fast flash.

The flashing behavior is an on/off cycle once every 1.6 seconds approximately, a slow flash.

HP E2620-24-PoE+ (J9625A) and HP E2620-48-PoE+ Switch (J9627A) Switches only.

A component of the switch has failed its self test. The switch Fault LED,

Test LED, and the failed component LED will flash simultaneously.

See the HP Redundant and/or External Power Supply Installation and Getting Started Guide for information on the LED behavior of the external

power supplies.

1-8

Port LEDs

The port LEDs provide information about the individual switch ports.

Table 1-3. Port LEDs

Switch LEDs State Meaning

E2620 non-PoE Switches

Introducing the Switch

Front of the Switch

Port LEDs Displays port link information, network activity information, whether the port is

Mini-GBIC LEDs:

Link Flashing

Link and Mode (green)

Switch E2620-PoE Switches

Link (green)

configured for full-duplex operation, or the speed of the connection depending on the LED Mode selected. See “LED Mode Select Button and Indicator LEDs” on the next page for more information.

One of the following conditions exist:

orange

On for 2 seconds

On The port is enabled and receiving a link indication from the connected

Off One of these condition exists:

• the mini-GBIC is not supported by the current software

• the mini-GBIC is not a genuine HP Mini-GBIC and is not supported

• the mini-GBIC is an “A” version in a switch that requires a “B” version or later.

Both the Link and Mode LED turn on solid for 2 seconds and then go to normal operation. This indicates the mini-GBIC has been recognized by the switch.

device. In PoE+ mode, indicates that the port is configured to enable PoE power delivery to the connected device.

• no active network cable is connected to the port

• the port is not receiving link beat or sufficient light

• the port has been disabled through the switch console, the web browser interface, ProCurve Manager, or other network management tool.

• In PoE+ mode, indicates that the port is configured such that PoE+ power delivery is disabled.

Flashing

Mode (green) Depending on the mode selected, displays the following:

• Connection speed information

• network activity information

• PoE+ power delivery status See “LED Mode Select Button and Indicator LEDs:” below for more information.

The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.

The port has failed self test. The switch Fault, and Self Test LEDs will flash simultaneously.

1-9

Introducing the Switch

Mode LED

Link LED

LED Mode select button

and indicator LEDs

The non-PoE+ switches, have two LEDs per port. The Link status is always shown by the Link LED. The operation of the Mode LED is controlled by the LED Mode select button, and the current setting is indicated by the LED Mode indicator LEDs near the button. Press the button to step from one view mode to the next. The default view is Activity (Act).

Link LED

(port number)

LED Mode select button

and indicator LEDs

The PoE+ switches also have two LEDs per port. The Link status is always shown by the Link LED as with the non-PoE switches. The operation of the Mode LED is the same as the non-PoE switches. The difference is the PoE+ switches have an additional mode, and that is PoE+. In PoE+ mode, the Link LED indicates the PoE+ configuration for the port: On if PoE+ is enabled on the port; Off if PoE+ is disabled on the port. The default view is Activity (Act).

Mode LED

Front of the Switch

LED Mode Select Button and Indicator LEDs

To optimize the amount of information that can be displayed for each of the switch ports in the limited space available, the E2620 Switches use multipledisplay LEDs for each port.

Figure 1-2. E2620 non-PoE Switches

1-10

Figure 1-3. E2620-PoE+ Switches

Table 1-4. Multiple-Display Port LEDs

Switch LEDs State Meaning

All E2620 Switches

Introducing the Switch

Front of the Switch

Port LED View indicator LEDs 3 green LEDs)

Switch E2620-PoE+ Series

LED Mode indicator LEDs (PoE+ is the additional LED, green)

Act FDx Spd

PoE+ Indicates the Port LEDs are lit for ports that are providing PoE+ power to the

Reset Button

This button is for:

■ Resetting the switch - When the switch is powered on. This action clears

any temporary error conditions that may have occurred and executes the switch self test.

■ Restoring Factory Default Configuration - When pressed with the

Clear button in a specific pattern, any configuration changes you may have made through the switch console, the web browser interface, and SNMP management are removed, and the factory default configuration is restored to the switch. For the specific method to restore the factory default configuration, see “Restoring the Factory Default Configuration”

on page 12, “Troubleshooting” of this manual.

Indicates the Port LEDs are displaying network activity information. Indicates the Port LEDs are lit for ports that are in full-duplex mode. Indicates the Port LEDs are displaying the connection speed at which each

port is operating:

• if the Port LED is off, the port is operating at 10 Mbps.

• if the Port LED is flashing, the port is operating at 100 Mbps.

• if the Port LED is on continuously, the port is operating at 1000 Mbps.

connected device.

Clear Button

This button is used for:

■ Deleting Passwords - When pressed by itself for at least one second, the

button deletes any switch console access passwords that you may have configured. Use this feature if you have misplaced the password and need console access. This button is provided as a convenience, however if you are concerned with the security of the switch configuration and operation, you should make sure the switch is installed in a secure location. This button can be disabled by a CLI command.

■ Restoring Factory Default Configuration - See Reset Button above.

1-11

Introducing the Switch

AC power connector

Attach grounding lug

(optional)

RPS Input

AC power connector

RPS Input

Attach grounding lug

(optional)

EPS Input

AC power connector

RPS Input

Attach grounding lug

(optional)

Back of the Switch

Console Port

This port is used to connect a console to a E2620 Switches by using the RJ-45 to DB9 cable, supplied with the switch. This connection is described under “8. (Optional) Connect a Console to the Switch” on page 25 in chapter 2, “Installing the Switch.” The console can be a PC or workstation running a VT-100 terminal emulator, or a VT-100 terminal.

Back of the Switch

Figure 1-4. HP Switch E2620-24 and E2620-48 non-PoE+

Figure 1-5. HP Switch E2620-24-PoE+ and E2620-48-PoE+

Figure 1-6. HP Switch 2620-24-PPoE+

1-12

Introducing the Switch

Switch Features

RPS and EPS Input Port

The E2620 Switches support connectivity to three external power supplies denpending on the switch to be supported.

■ The HP 600 Redundant and External Power Supply (J8168A) can be

connected to:

• E2620-24 (J9623A)

• E2620-48 (J9626A)

• E2620-24-PPoE+ (J9624A) For RPS power only. EPS power is not supported on these switches.

■ The HP 620 Redundant and External Power Supply (J8696A) and the HP

630 Redundant and/or External Power Supply (J9443A) can be connected to:

• E2620-24-PoE+ (J9625A)

• E2620-48-PoE+ (J9627A) The RPS functionality of these external power supplies provide redundant

system power in case the switch’s internal power supply fails. The EPS functionality of the 630 provides additional PoE+ power. The E2620 Switches do not support EPS power from the 620 RPS/EPS. Also refer to the RPS/EPS Compatibility Matrix on page 1-4.

Power Connector

The E2620 Switches and E2620-PoE+ 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 100-127 and 200-240 volts and either 50 or 60 Hz. There are no voltage range settings required.

Switch Features

The features of the E2620 Switches and E2620-PoE+ Switches include:

■ 24, or 48 auto-sensing 10/100Base-TX RJ-45 ports with Auto-MDIX.

■ 4 Uplink ports—two are 1000Base-T RJ-45 and two are mini-GBIC (SFP)

slots.

1-13

Introducing the Switch

Switch Features

■ Power over Ethernet (PoE/PoE+) operation—the E2620-PoE+ Switches

are IEEE 802.3at compliant and provide up to 30W per port to power IP phones, wireless access points, web cameras, and more. For more information, see the HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide, which is on the HP Web site at

www.hp.com/

networking/support.

■ The E2620-PoE+ Switches support some pre-standard PoE devices.

However, the use of a cross-over cable may be required. For a current list see the FAQ page for the E2620-PoE+ Switch, which can be found on the HP Web site,

■ Plug-and-play networking—all ports are enabled—just connect the

www.hp.com/networking/support.

network cables to active network devices and your switched network is operational.

■ Auto-MDIX on all twisted-pair ports, 10/100 and 10/100/1000, meaning that

all twisted-pair connections can be made using straight-through cables. Cross-over cables are not required, although they will also work.

■ Automatic learning of the hardware addresses in each switch’s 8000-

address forwarding table, (with configurable address aging value).

■ Automatically negotiated full-duplex operation for the 10/100 and

10/100/1000 RJ-45 ports when connected to other auto-negotiating devices—the mini-GBIC ports always operate at full duplex, unless a 100-FX SFP transceiver is installed. The 100-FX SFP transceiver can operate at half duplex.

■ Easy management of the switches through several available interfaces:

• console interface—a full featured, easy to use, VT-100 terminal interface that is especially good for out-of-band switch management or for Telnet access to the switch.

• web browser interface—an easy to use built-in graphical interface that can be accessed from common web browsers.

• ProCurve Manager—an SNMP-based, graphical network management tool that you can use to manage your entire network.

■ Support for the Spanning Tree Protocol to eliminate network loops

■ Support for up to 512 IEEE 802.1Q-compliant VLANs so you can divide

the attached end nodes into logical groupings that fit your business needs.

■ Download of new switch software for product enhancements or bug fixes.

■ Variable-speed fans to maintain cooling.

■ Support for many advanced features to enhance network performance—

for a description, see the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support.

1-14

Installing the Switch

The HP E2620 Switches come with an accessory kit that includes the brackets for mounting the switch in a standard 19-inch telco rack, or in an equipment cabinet. The brackets for the non-PoE+ 2620 models also allow them to be mounted on a wall. The brackets are designed to allow mounting the switch in a variety of locations and orientations. Rubber feet are provided that can be attached so the switch can be securely located on a horizontal surface. This chapter shows how to install the E2620 Switches.

Included Parts

The E2620 Switches have the following components:

■ HP Switch Quick Setup Sheet

■ Read Me First

■ HP Switches General Safety and Regulatory Information booklet

■ E2620 Switch Specific Safety and Regulatory Information sheet

■ Console cable

■ Customer Support/Warranty booklet

■ Accessory kits:

Installing the Switch

Included Parts

E2620 Non-PoE+ switches and the J9624A 24-port PPoE+ switch

Kit number 5069-6535

Contains:

• two mounting brackets

• eight 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

The mounting brackets in this kit are longer to support the increased depth of the E2620-

PoE+ products. They cannot be used to wall mount the PoE+ switches.

E2620-PoE+ switches, J9625A and J9627A

Kit number 5069-5705

Contains:

• two mounting brackets

• eight 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

2-1

Installing the Switch

Included Parts

AC power cord, one of the following:

Japan Power Cord Warning

Country/Region Non-PoE+ and PPoE+

Australia/New Zealand China Continental Europe Denmark Japan Switzerland United Kingdom/Hong Kong/Singapore South Africa Thailand Taiwan United States/Canada/Mexico Israel Chile Brazil Argentina

The cords for the PoE+ Switches support a higher amperage and a C15 connector.

Switches

8121-0834 8120-8377 8120-6802 8120-6806 8120-6804 8120-6807 8120-6809 8121-0919 8121-0673 8121-0964 8120-6805 8121-1035 8120-6980 8121-1069 8120-6869

PoE+ Switches

8121-0857 8121-1034 8120-5336 8120-5340 8120-5342 8120-5339 8120-5334 8120-5341 8121-0671 8121-0967 8121-0973 8121-1009 8120-8389 8121-1132 8120-8375

2-2

Installing the Switch

Included Parts

Installation Precautions

WARNINGS ■ 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 devices at the bottom and progressively lighter devices installed above.

■ For safe operation do not install the switch with the side of the

switch (with the fan vents) facing either downward or upward.

Cautions ■ If one of the following switches is to be mounted in a rack, you can use a

rack kit, J9583A - HP X410 1U Universal 4-Post Rack Mounting Kit for the following switches only:

• J9085A HP Switch E2620-24

• J9088A HP Switch E2620-48

• J9086A HP Switch E2620-24-PPoE+

■ Ensure 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, ensure 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. If the PoE+ device’s supplied power cord does not fit, contact HP networking support.

■ When installing the switch, the AC outlet should be near the switch and

should be easily accessible in case the switch must be powered off.

■ Ensure 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. 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). This includes a fully-enclosed rack. Ensure the air flow around the sides and back of the switch is not restricted. Leave at least 7.6 cm (3 inches) for cooling.

■ Ensure all port covers are installed when the port is not in use.

2-3

Installing the Switch

Installation Procedures

These steps summarize your switch installation. The rest of this chapter provides details on these steps.

1. Prepare the installation site (page 2-6). Make sure 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 an appropriate location for the switch. See page

2-3 for some installation precautions.

2. Verify the switch passes self test (page 2-6). Plug the switch into a power source and observe that the LEDs on the switch’s front panel indicate correct switch operation.

3. Mount the switch (page 2-9). The E2620 Switches can be mounted in a 19-inch telco rack, in an equipment cabinet, or on a horizontal surface.

The non-PoE+ E2620 Switches can also be wall mounted. See page 2-14 for wall mounting instructions.

The following switches can be rack mounted with rack kit, J9583A - HP X410 1U Universal 4-Post Rack Mounting Kit.

• J9623A HP Switch E2620-24

• J9626A HP Switch E2620-48

• J9624A HP Switch E2620-24-PPoE+

2-4

4. Connect power to the switch (page 2-15). Once the switch is mounted, plug it into the main power source.

5. Connect the network devices (page 2-15). Using the appropriate network cables, connect the network devices to the switch ports.

6. (Optional) Install mini-GBICs (page 2-17). The switch has two slots for installing mini-GBICs. Depending on where you install the switch, it may be easier to install the mini-GBICs first. Mini-GBICs can be hot swapped—they can be installed or removed while the switch is powered on.

7. (Optional) Connect an External Power Supply to the Switch (page

2-19). You may wish to use a 600 RPS/EPS, 620 RPS/EPS, or 630 RPS/EPS

with your E2620-PoE+ Switches. To do so you must connect these external power supplies using the RPS or EPS cables supplied with these devices.

Installing the Switch

Installation Procedures

8. (Optional) Connect a console to the switch (page 2-25). You may wish to modify the switch’s configuration, for example, to configure an IP address so it can be managed using a web browser, from an SNMP network management station, or through a Telnet session. Configuration changes can be made by using the included console cable to connect a PC to the switch’s console port.

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

Figure 2-1. Air flow direction of the E2620 switches

2-5

Installing the Switch

Connect power cord to

the power connector

Installation Procedures

1. Prepare the Installation Site

Cabling Infrastructure - Ensure the cabling infrastructure meets the necessary network specifications. See the following table for cable types and lengths, and see appendix B, “Cabling and Technology Information” for more information:

■ Installation Location - Before installing the switch, plan its location and

orientation relative to other devices and equipment:

• In the front of the switch, leave at least 7.6 cm (3 inches) of space for

the twisted-pair and fiber-optic cabling.

• In the back of the switch, leave at least 3.8 cm (1 1/2 inches) of space

for the power cord.

• On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling.

2. Verify the Switch Passes Self Test

Before mounting the switch in its network location, you should first verify it is working properly by plugging it into a power source and verifying 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 properly grounded electrical outlet.

Figure 2-2. Example of connecting the power cord

2-6

Installing the Switch

Power and Fault LEDs

Self Test LED

Switch port LEDs

Installation Procedures

Note The E2620 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 100-127 or 200-240 volts and either 50 or 60 Hz. There are no voltage range settings required.

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. If the PoE+ device’s supplied power cord does not fit, contact HP networking support.

2. Check the LEDs on the switch as described below.

Figure 2-3. Checking the LEDs on the E2620 non-PoE+ switches

2-7

Installing the Switch

Power and

Fault LEDs

Self Test LED Switch port LEDs

Installation Procedures

When the switch is powered on, it performs its diagnostic self test. Self test takes approximately 50 seconds to complete.

Figure 2-4. Checking the LEDs on the E2620-PoE+ switches

LED Behavior

During the self test:

• Initially, all the switch and port LEDs are on. Most of the LEDs go off

and then may come on again during phases of the self test.

• For the duration of the self test, the Self Test LED stays on.

2-8

When the self test completes successfully:

•The Power and Fan LEDs remain on.

•The Fault and Tes t LEDs go off.

• The port LEDs on the front of the switch go into their normal opera-

tional mode: – If the ports are connected to active network devices, the LEDs

behave according to the Port LED View or LED Mode selected. The default view mode (Link), the LEDs should be on and the Mode LEDs will flicker if there is network activity.

– If the ports are not connected to active network devices, the Link

and Act LEDs will stay off.

If the LED display is different than what is described above, especially if the Fault and Te st LEDs stay on for more than 60 seconds or they start flashing, the self test has not completed correctly. Refer to chapter 4,

“Troubleshooting” for diagnostic help.

Installing the Switch

Installation Procedures

3. Mount the Switch

After the switch passes self test, it is ready to be mounted in a stable location. The E2620 Switches can be mounted in these ways:

Mounting Location Non-PoE+ Switches PoE+ Switches

In a rack or cabinet Yes Yes

On a horizontal surface Yes Yes

On a wall Yes

Under a desk Yes

This also includes the E2620-24-PPoE+ Switch (J9624A).

RJ-45 ports facing up only.

Rack or Cabinet Mounting

The E2620 Switches are designed to be mounted in any EIA-standard 19-inch telco rack or communication equipment cabinet. Note that the mounting brackets have multiple mounting holes and can be rotated allowing for a wide variety of mounting options. Secure the rack in accordance with the manufacture’s safety guidelines.

1,2

WARNING For safe operation, please read the mounting precautions on

page 2-3, before mounting a 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 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.

2-9

Installing the Switch

Installation Procedures

Rack Mounting the E2620-PoE+ switches

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

Figure 2-5. Attaching large mounting brackets

WARNING For safe reliable installation, only use the screws provided in the

accessory kit to attach the mounting brackets to the switch.

Note 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 above.

2. Hold the switch with attached brackets up to the rack and move it vertically until rack holes line up with the bracket holes, then insert and tighten the four number 12-24 screws holding the brackets to the rack.

2-10

Installing the Switch

Install 12-24

screws

Installation Procedures

Figure 2-6. Mounting in a rack

2-11

Installing the Switch

8 mm

M4 screws

Installation Procedures

Rack Mounting the Non-PoE+ Switches

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

Figure 2-7. Attaching small mounting brackets

Note The mounting brackets have multiple mounting holes and can be rotated

WARNING For safe reliable installation, only use the screws provided in the

accessory kit to attach the mounting brackets to the switch.

2-12

Installing the Switch

Install 12-24

screws

Installation Procedures

Figure 2-8. Mounting in a rack

2-13

Installing the Switch

M4 screws

Wall

5/8-inch

wood screws

RJ-45 Ports

Installation Procedures

Flat Wall Mounting (non-PoE+ models only)

You can mount the non-PoE+ 2620 models on a wall. They should be mounted with the RJ-45 ports facing up as shown in Figure 2-9.

WARNING For safe operation do not install the switch with either side vent holes

facing downward.

Caution The switch should be mounted only to a wall or wood surface that is at least

1/2-inch (12.7 mm) 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 two 5/8-inch number 12 wood screws (not included).

Figure 2-9. Wall mounting RJ-45 ports facing up

2-14

Installing the Switch

Installation Procedures

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.

Caution Ensure 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. See page 2-6.

2. Re-check the LEDs during self test. See “LED Behavior” on page 2-8.

5. Connect the Network Cables

Connect the network cables, described under “Cabling Infrastructure” (page

2-6), from the network devices or your patch panels to the fixed RJ-45 ports

on the switch or to any mini-GBICs you have installed in the switch.

2-15

Installing the Switch

RJ-45 connector

Unshielded 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

Figure 2-10. Connecting network cables

Installation Procedures

Using the RJ-45 Connectors

To connect:

Push the RJ-45 plug into the RJ-45 port 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 d evice (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 4, “Troubleshooting”.

To disconnect:

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

2-16

Installing the Switch

Installation Procedures

6. Installing or removing SFP transceivers (mini-GBICs)

You can install or remove an SFP (mini-GBIC) from an SFP slot without having to power off the switch. Use only HP SFP transceivers.

Notes ■ The SFP slots are not shared with the two 10/100/1000Base-T RJ-45 ports.

When an SFP is installed in a slot, it operates independently of the RJ-45 ports.

■ The SFP ports operate only at full duplex. Half duplex operation is not

supported, unless a 100-FX SFP transceiver is installed. The 100-FX SFP transceiver can operate at half duplex.

■ Ensure the network cable is NOT connected when you install or remove

an SFP.

Caution Use only supported genuine HP SFP transceivers with your switch. Non-HP

SFP transceivers are not supported, and their use may result in product malfunction. Should you require additional HP SFP transceivers, contact your HP networking Sales and Service Office or authorized dealer.

Installing the SFP transceivers:

Remove the protective plastic cover and retain it for later use. Hold the SFP transceiver by its sides and gently insert it into either of the slots on the switch until the transceiver clicks into place.

WARNING The HP SFP transceivers are Class 1 laser devices. Avoid direct eye

exposure to the beam coming from the transmit port.

2-17

Installing the Switch

Installation Procedures

Figure 2-11. Installing an SFP transceiver

Removing the SFP transceiver

Note You should disconnect the network cable from the SFP transceiver before

removing it from the switch.

Depending on when you purchased your HP SFP transceiver, it may have either of three different release mechanisms: a plastic tab on the bottom of the transceiver, a plastic collar around the transceiver, or a wire bail.

To remove the transceivers that have the plastic tab or plastic collar, push the tab or collar toward the switch until you see the transceiver release from the switch (you can see it move outward slightly), and then pull it from the slot.

To remove the transceivers that have the wire bail, lower the bail until it is approximately horizontal, and then using the bail, pull the transceiver from the slot.

Replace the protective plastic cover on the transceiver.

Connecting Cables to SFP transceivers

If you have any SFP transceivers installed in the switch, the type of network connections you will need to use depends on the type of transceivers you have installed. See appendix B, “Cabling and Technology Information”, for cabling information.

For SFP transceiver ports, and in general for all the switch ports, when a network cable from an active network device is connected to the port, the port LED for that port should go on. If the port LED does not go on when the

2-18

Installing the Switch

Installation Procedures

network cable is connected to the port, see “Diagnosing with the LEDs” in chapter 4, “Troubleshooting”.

7. (Optional) Connect an External Power Supply to the

Switch

There are three external power supplies available for these switches:

■ HP 600 Redundant and External Power Supply, J8168A, is an accessory

product for the E2620 switches and specific other HP switches.

■ HP 620 Redundant and External Power Supply, J8696A, is an accessory

product for the E2620 switches and specific other HP switches.

■ HP 630 Redundant and/or External Power Supply, J9443A, is an accessory

product for the E2620-PoE+ switches and specific other HP PoE+ switches.

The external power supplies provide two types of power to the switches:

■ Redundant power, to back up the internal switch power supply in case of

AC power loss, or a fault condition. Should the internal switch power supply fail, power will be supplied from the external power supply.

■ External Power-over-Ethernet (PoE/PoE+) power. The external power

supplies can supply PoE/PoE+ power to the switch if the internal PoE/ PoE+ power supply fails. For the 48 port switch, the external PoE/PoE+ power is additional power made available to the switch’s ports.

For further information regarding the external power supply PoE/PoE+ capabilities, see the following manuals:

• HP Power over Ethernet (PoE/PoE+) Planning and Implementation

Guide

• HP Redundant and/or External Power Supply Installation and

Getting Started Guide

These manuals are on the HP Web site at

www.hp.com/networking/support.

These external power supplies are unmanaged power supplies that only provide information by way of LEDs.

2-19

Installing the Switch

Installation Procedures

RPS/EPS Operation

The RPS/EPS monitors the power signal from the switch by detecting that the RPS/EPS is connected to a switch with an RPS/EPS cable. When the power from the switch is no longer detected, the RPS/EPS will provide power to the switch within 1 millisecond.

The RPS/EPS supports hot plugging of the RPS/EPS cable without causing a reboot of the switch or causing the power supply in either the RPS/EPS or switch to shut down temporarily or permanently. For more information refer to the documentation that came with the RPS/EPS.

Operating Characteristics of the external power supplies

The 600 external power supply has six RPS ports, the 620 RPS has two RPS ports, and the 630 external power supply has one RPS port, each of which can provide redundant +12V power to a connected switch. If a switch with no AC power is connected to an operating external power supply, it will not receive power. The switch must be initially powered on using AC power before external power supply will provide RPS power.

The 600 and 620 external power supplies can not be used by the E2620 switches for PoE/PoE+ (EPS) power. The 630 external power supply has one EPS port and can provide a maximum of 388 watts of PoE/PoE+ power. PoE power is provided at 50 volts and PoE+ power is provided at 54 Volts.

■ It is important to understand the PoE/PoE+ power requirements of the

switches because if the PoE/PoE+ power is not planned and implemented correctly the end devices connected to the switch ports may not receive power if an internal switch PoE/PoE+ power supply should fail. For further information regarding the external power supply PoE/PoE+ capabilities, see the following manuals:

• HP Power over Ethernet (PoE/PoE+) Planning and Implementation

Guide

• HP Redundant and/or External Power Supply Installation and

Getting Started Guide

2-20

These manuals are on the HP Web site at

www.hp.com/networking/support.

For redundant AC power, connect the external power supply to the switch using one of the supplied RPS cables. For redundant or additional PoE/PoE+ power, connect the external power supply to the switch using one of the supplied EPS cables. The RPS and EPS cables are 2.00 meters (6.56 feet) in length. These cables are identical. If accidentally cross connected, nothing will happen. No power will flow until properly connected.

Installing the Switch

EPS 1

RPS 5

RPS 3

R3R1

Power Status

RPS 1

RPS 2

RPS 4

RPS 6

EPS 2

Device Connected Power Status

Device Connected

RPS ports

EPS ports

RPS port LEDs

EPS port LEDs

EPS ports

RPS ports

EPS port LEDs

RPS port LEDs

EPS ports

RPS port LEDs

RPS/EPS port LEDs

RPS ports

Installation Procedures

External Power Supply LEDs

The external power supply LEDs are duplicated on the front and back of the units. The following graphics show examples of the back of the 600 EPS/RPS and the front and back of the 630 RPS/EPS. There are dual colored (green/ orange) LEDs for each RPS and EPS port:

■ Device Connected

■ Power Status

Figure 2-12. Back of the 600 RPS/EPS

Figure 2-13. Back of the 620 RPS/EPS

Figure 2-14. Front and back of the 630 RPS/EPS

2-21

Installing the Switch

Installation Procedures

Table 2-1. RPS/EPS LEDs

LED State Meaning

Power (green)

Fault (orange)

On The unit is powered on.

Off The unit is NOT powered on.

Off The normal state; indicates that there are no fault conditions on the unit.

Blink orange

A fault has occurred on the unit, one of the ports, or the fan. The Status LED for the

1,3

component with the fault will blink simultaneously.

On On briefly after the unit is powered on or reset, at the beginning of unit self test. If

this LED is on for a prolonged time, the unit has encountered a fatal hardware failure, or has failed its self test. See chapter 3, “Troubleshooting” for more information.

Temp Status (green and orange)

On The temperature of the unit is within specification.

Blink orange

One of these conditions exists:

• A cooling fan has failed. The unit Fault LED and Fan Status LED will be blinking simultaneously.

• There is an over temperature condition in the unit. The unit Fault LED is off.

Fan Status (green and orange)

On The cooling fans are operating normally.

Blink orange

A cooling fan has failed. The unit Fault LED will be blinking simultaneously.

Port Status (also on back panel of the external power supplies)

Device Connected (green – over-laid with the port

On There is a valid connection to a device.

Off There is no valid device connected to the port.

number)

Power Status (green and orange)

On The unit is supplying power to a connected device.

Off One of these conditions exists:

• There is no connected device.

• A connected RPS device does not require power.

• A connected EPS device has not successfully communicated for EPS power.

Blink orange

One of these conditions exists:

• On the external power supply, RPS power is not available to the connected device because there is a hardware or power supply failure in the external power supply.

• When the LED is blinking simultaneously with the Fault LED, there is a fault condition on the port.

The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.

The blinking behavior is an on/off cycle once every 0.8 seconds, approximately.

Specific fault conditions can be viewed by checking switch log files.

2-22

Installing the Switch

Installation Procedures

External Power Supply Connectivity

This section shows some recommended connection topologies using the external power supplies.

600 RPS/EPS

The 600 RPS/EPS can provide backup power support for up to six HP switches. In the illustration below, one HP E2620-24-PoE+ switch is connected to an RPS port on a 600 RPS/EPS.

Figure 2-15. Connecting RPS to one switch

620 RPS/EPS

The 620 RPS/EPS can provide backup power support for two HP switches. In Figure 2-16, two HP E2620 PoE+ switches are connected to the RPS ports on a 620 RPS/EPS.

Figure 2-16. Connecting RPS to two switches

2-23

Installing the Switch

Installation Procedures

630 RPS/EPS

The 630 RPS/EPS can provide backup power support for one HP switch. In Figure 2-17, one HP E2620-48-PoE+ switch is connected to the RPS port on a 630 RPS/EPS.

Figure 2-17. Connecting the 630 RPS to a switch

The 630 RPS/EPS is designed to provide primary or backup PoE+ power to one HP PoE+ switch. In the following illustration, one HP E2620-48-PoE+ switch is being supplied with external PoE+ power from a 630 RPS/EPS. The switch provides PoE+ power to Ethernet devices connected to the ports.

2-24

Figure 2-18. Connecting the 630 EPS to a switch

■ For further information regarding the external power supply PoE/PoE+

capabilities, see the following manuals:

• HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide

• HP Redundant and/or External Power Supply Installation and Getting Started Guide

These manuals are on the HP Web site at

www.hp.com/networking/support.

Installing the Switch

Installation Procedures

8. (Optional) Connect a Console to the Switch

The E2620 Switches have a full-featured, easy to use console interface for performing switch management tasks including the following:

■ monitor switch and port status and observe network activity statistics

■ modify the switch’s configuration to optimize switch performance,

enhance network traffic control, and improve network security

■ read the event log and access diagnostic tools to help in troubleshooting

■ download new software to the switch

■ add passwords to control access to the switch from the console, web

browser interface, and network management stations

The console can be accessed through these methods:

■ Out-of-band: The E2620 Switches come with a serial cable for connecting

a PC or VT-100 terminal, to be used as a console, directly to the switch.

■ In-Band: Access the console using Telnet from a PC or UNIX station on

the network, and a VT-100 terminal emulator. This method requires that you first configure the switch with an IP address and subnet mask by using either out-of-band console access or through DHCP/Bootp. For more information on IP addressing and on starting a Telnet session, see chapter 3, “Configuring the Switch”, in the Management and Configuration Guide, which is on the HP Web site at

networking/support, (See page 1-14).

www.hp.com/

The E2620 Switches can simultaneously support one out-of-band console session through the Console Port and in-band Telnet console sessions.

Terminal Configuration

To connect a console to the switch, configure the PC terminal emulator as a DEC VT-100 (ANSI) terminal or use a VT-100 terminal, and configure either one to operate with these settings:

■ any baud rate from 1200 to 115200 (the switch senses the speed)

■ 8 data bits, 1 stop bit, no parity, and flow control set to Xon/Xoff

■ for the Windows Terminal program, also disable (uncheck) the “Use

Function, Arrow, and C

■ for the Hilgraeve HyperTerminal program, select the “Terminal keys”

option for the “Function, arrow, and ctrl keys act as” parameter

If you want to operate the console using a different configuration, make sure you change the settings on both the terminal and on the switch so they are compatible. Change the switch settings first, then change the terminal settings, then reboot the switch and reestablish the console session.

trl Keys for Windows” option

2-25

Installing the Switch

Console port

Console cable supplied

with the switch

PC running a terminal emulator program, or

a VT-100 terminal

Figure 2-19. Connecting the console cable

Installation Procedures

Direct Console Access

To connect a console to the switch, follow these steps:

1. Connect the PC or terminal to the switch’s Console Port using the console cable included with the switch. (If your PC or terminal has a 25-pin serial connector, first attach a 9-pin to 25-pin straight-through adapter at one end of the console cable.)

2. Turn on the terminal or PC’s power and, if using a PC, start the PC terminal program.

3. Press

[Enter] two or three

times and you will see the copyright page and the message “Press any key to continue”. Press a key, and you will then see the switch console command (CLI) prompt, for example:

ProCurve Switch #

If you want to continue with console management of the switch at this time, see chapter 3, “Getting Started With Switch Configuration” for some basic configuration steps. For more detailed information, refer to the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/

networking/support, (See page 1-14).

2-26

Sample Network Topologies for Non-PoE+ Switches

Switch E2620-48

PCs and

peripherals

Server

Twisted-pair

straight-through

or crossover

cables

Installing the Switch

Sample Network Topologies for Non-PoE+ Switches

This section shows a few sample network topologies in which the Switch E2620 is implemented. For more topology information, see the HP networking products Web site,

As a Desktop Switch

www.hp.com/networking/support.

Figure 2-20. Basic desktop configuration

The E2620 Switches are designed to be used primarily as desktop switches to which end nodes, printers, other peripherals, and servers are directly connected, as shown in the above illustration. 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 Auto-MDIX feature on the E2620 Switches ports.

2-27

Installing the Switch

Switch E2620-48

Server with

Gigabit

Ethernet NIC

Category 5e twisted-pair straight-through or

crossover cable for 1000 Mbps connection to server

Gigabit

fiber-optic cable

Switch E2620-48

PCs,

printers,

and local

servers

Twisted-pair

straight-through

cables to

end nodes

Category 5e twisted-pair straight-

through or crossover cable for 1000

Mbps connection to backbone

Sample Network Topologies for Non-PoE+ Switches

As a Segment Switch

2-28

Figure 2-21. Segment network configuration

The E2620 Switches also work well as segment switches. That is, with their high performance, they can be used for interconnecting network segments— simply connect the network devices that form those segments to the E2620 Switches.

In the illustration above, two “Fast Ethernet” switches with PCs, printers, and local servers attached, are both connected to a Switch E2620-48. The devices attached to the two desktop switches can now communicate with each other through the switch. They can also all communicate with the server that is connected to a 1000Base-T port on the switch.

Sample Network Topologies for Non-PoE+ Switches

To Gigabit-Ethernet

backbone

E2620-48 Switch

Gigabit

fiber-optic cables

E5406 zl Switch

E2620-48 Switch

Installing the Switch

Because the E2620 Switches have the Auto-MDIX feature, the connections between the switches, and between the switch and end nodes or servers can be through category 5 straight-through or crossover twisted-pair cable. Category 3 or 4 cable can also be used if the connection is 10 Mbps only. In all cases, the device ports must be configured to auto negotiate the link characteristics for this feature to work.

The switch, in turn, can be connected to a network backbone through fiberoptic cabling connected to a Gigabit-SX, -LX, or -LH mini-GBIC. Now, all the devices on these network segments can access other network resources that are connected elsewhere on the network backbone. Always remember when connecting fiber-optics that all components match in specification.

Connecting to a Backbone Switch

Figure 2-22. Networking to a gigabit ethernet backbone

2-29

Installing the Switch

Sample Network Topologies for Non-PoE+ Switches

The simpler desktop and segment networks shown in the previous two examples can easily be combined and expanded. For example, you could use a HP E5406 zl Switch to interconnect each of your smaller switched workgroups to form a larger switched network. All the devices in this network can communicate with each other. For example, with Gigabit-SX Mini-GBICs installed in a Mini-GBIC Module, in the E5406 zl Switch, the entire switched topology could be connected to a campus backbone, as shown in the illustration above.

Note In the Figure 2-22, the 1000 Mbps fiber-optic connection between the E2620

Switches and the 5406 zl Switch is by way of a Gigabit-SX mini-GBIC installed in the E2620 Switches connected to a Gigabit SX mini-GBIC installed in the mini-GBIC Module in the 5406 zl Switch.

2-30

Sample Network Topologies for PoE+ Switches

Server

E2620-48-PoE+

PCs and

peripherals

IP Telephones

630 RPS/EPS

Gigabit

fiber-optic cable

to backbone

RPS cable

EPS cable

Twisted-pair

straight-through

or crossover

cables

Installing the Switch

Sample Network Topologies for PoE+ Switches

This section shows a few sample network topologies for implementing the Switch E2620-PoE+ Series. For more topology information, see the HP networking products Web site,

As a Desktop Switch Implementing PoE+

www.hp.com/networking/support.

Figure 2-23. Basic desktop configuration with external power

The Switch E2620-PoE+ Series are also designed to be used as desktop switches to which end nodes, printers and other peripherals, and servers are directly connected, as shown in the above illustration. Except now these switches can supply PoE power to end devices such as IP telephones.

As shown in the above illustration the IP telephones can be connected in line, that is, between the switch and the end device, in this case a PC. The IP telephones have two ports, one in and one out. Therefore the phone receives voice and power from the switch and the PC can send and receive data through the phone to the switch.

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 Auto-MDIX feature on the E2620-PoE+ Switches.

2-31

Installing the Switch

Server with

Gigabit

Ethernet NIC

E2620-48 Non-PoE+ Switch

E2620-48-PoE+ Switch

630 RPS/EPS

PCs, printers,

and local

servers

Twisted-pair straight-

through or crossover cables

Wireless

Access Points

Category 5e twisted-pair straight-through or

crossover cable for 1000 Mbps connection to server

Gigabit

fiber-optic cable

uplink

620 RPS/EPS

E2620-48-PoE+

Switch

Sample Network Topologies for PoE+ Switches

As a Segment Switch Implementing PoE

2-32

Figure 2-24. Segment network configuration with PoE+ switches

As shown in the illustration above, the IP telephones have been inserted in between the E2620-48-PoE+ Switch and the PCs, and wireless access points (WAPs) have been connected to another E2620-48-PoE+ Switch. Both the telephones and WAPs will receive PoE+ power from each of the switches. Only devices directly connected to the PoE+ switches can receive PoE+ power. Devices connected to a non-PoE+ segment switch cannot receive PoE+ power.

To Gigabit-Ethernet

backbone

Wireless

Access Point

630 RPS/EPS

E2620-48-

PoE+

Switch

E2620-48-PoE+

Switch

Gigabit

fiber-optic

cable

E5406 zl Switch

E2620-48 non-

PoE+ Switch

Sample Network Topologies for PoE+ Switches

Installing the Switch

Connecting to a Backbone Switch Implementing PoE

Figure 2-25. Networking PoE+ switches to a gigabit ethernet backbone

2-33

Installing the Switch

Sample Network Topologies for PoE+ Switches

Stacking the Switch

The E2620 and E2620-PoE+ Switches can be connected together, through standard network connections, and managed through a single IP address. Up to 16 switches can be connected together in such a “virtual stack”.

You identify an E2620 or E2620-PoE+ Switch as the “Commander” and give that switch an IP address. Up to 15 other switches in the network can then easily be configured as Members of the stack and managed through the Commander’s IP address. The management includes Telnet access and web browser interface access to the Commander and to each Member switch through the Commander.

For more information on stacking your switch, see the Management and Configuration Guide, which is on the HP Web site at

support, (see page 1-14).

www.hp.com/networking/

2-34

Configuring the Switch

This chapter is a guide for using the console Switch Setup screen to quickly assign an IP (Internet Protocol) address and subnet mask to the switch, set a Manager password, and, optionally, configure other basic features.

For more information on using the switch console and the web browser interface, please see the Management and Configuration Guide, which is on the HP Web site at

Recommended Minimal Configuration

In the factory default configuration, the switch has no IP (Internet Protocol) address and subnet mask, and no passwords. In this state, it can be managed only through a direct console connection. To manage the switch through inband (networked) access, you should configure the switch with an IP address and subnet mask compatible with your network. Also, you should configure a Manager password to control access privileges from the console and web browser interface. Other parameters in the Switch Setup screen can be left at their default settings or you can configure them with values you enter.

www.hp.com/networking/support, (see page 1-14).

Many other features can be configured through the switch’s console interface, to optimize the switch’s performance, to enhance your control of the network traffic, and to improve network security. Once an IP address has been configured on the switch, these features can be accessed more conveniently through a remote Telnet session, through the switch’s web browser interface, and from an SNMP network management station running a network management program. For a listing of switch features available with and without an IP address, refer to “How IP Addressing Affects Switch Operation” in the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-14).

For more information on IP addressing, refer to “IP Configuration” in the Management and Configuration Guide.

Note By default, the switch is configured to acquire an IP address configuration

from a DHCP or Bootp server. To use DHCP/Bootp instead of the manual method described in this chapter, see “DHCP/Bootp Operation” in the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-14).

3-1

Configuring the Switch

Recommended Minimal Configuration

Using the Console Setup Screen

The quickest and easiest way to minimally configure the switch for management and password protection in your network is to use a direct console connection to the switch, start a console session, and access the Switch Setup screen.

1. Using the method described in the preceding section, connect a terminal device to the switch and display the switch console command line interface (CLI) prompt (the default display).

The CLI prompt appears, for example:

2. At the prompt, enter the setup command to display the Switch Setup screen. The following illustration shows the Setup screen with the default settings.

HP#

3-2

Figure 3-1. Example console setup screen

3. Use the

[Tab] key to select the Manager Password field and enter a manager

password of up to 16 printable ASCII characters.

[Tab] to the IP Config (DHCP/Bootp) field and use the Space bar to select the

Manual option.

[Tab] to the IP Address field and enter the IP address that is compatible with

your network.

[Tab] to the Subnet Mask field and enter the subnet mask used for your

network.

7. Press [

Enter], then [S] (for Save).

Recommended Minimal Configuration

Here is some information on the fields in the Setup screen. For more information on these fields, see the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-

14):

Parameter Default

System Name blank Optional; up to 25 characters, including spaces

System Contact blank Optional; up to 48 characters, including spaces

Manager Password blank Recommended; up to 16 characters (no blank spaces)

Configuring the Switch

Logon Default CLI The default setting selects the command line interface for console access.

Time Zone 0 (none) Optional; 1440 to -1440. The number of minutes your location is to the West (-)

Community Name public Default setting recommended.

Spanning Tree Enabled No Default setting recommended unless STP is already running on your network

Default Gateway blank Optional; Enter the IP address of the next-hop gateway node if network traffic

Time Sync Method None Optional; The protocol the switch uses to acquire a time signal. The options

TimeP Mode Disabled Optional; The method the switch uses to acquire the TimeP server address.

IP Config (DHCP/Bootp) DHCP/Bootp Set to Manual unless a DHCP/Bootp server is used on your network to

IP Address xxx.xxx.xxx.xxx Recommended; If you set IP Config to Manual, then enter an IP address

Note: The IP address and subnet mask assigned for the switch must be compatible with the IP addressing used in your network. For more information on IP addressing, see the Management and Configuration Guide, which is on the HP Web site at

Subnet Mask xxx.xxx.xxx.xxx Recommended; If you entered an IP address, then enter a subnet mask

www.hp.com/networking/support, (see page 1-14).

The alternative is the menu interface.

or East (+) of GMT.

or the switch will be used in complex network topologies.

needs to be able to reach off-subnet destinations.

are SNTP and TimeP.

configure IP addressing.

compatible with your network.

Where to Go From Here

The above procedure configures your switch with a Manager password, IP address, and subnet mask. As a result, with the proper network connections, you can now manage the switch from a PC equipped with Telnet, and/or a web browser interface.

3-3

Configuring the Switch

Recommended Minimal Configuration

Some basic information on managing your switch is included in the next section. For more information on the console, web browser, and SNMP management interfaces and all the features that can be configured on the E2620 Switches, see the Management and Configuration Guide, which is on the HP Web site at

To Recover from a Lost Manager Password:

If you cannot start a console session at the manager level because of a lost Manager password, you can clear all passwords and user names by getting physical access to the switch and pressing and holding the Clear button for a full second.

www.hp.com/networking/support, (see page 1-14).

3-4

Using the IP Address for Remote Switch Management

Configuring the Switch

Using the IP Address for Remote Switch Management

With your switch, you can use the switch’s IP address to manage the switch from any PC that is on the same subnet as the switch. You can use either a Telnet session or a standard web browser to manage the switch.

Starting a Telnet Session

To access the switch through a Telnet session, follow these steps:

1. Make sure the switch is configured with an IP address and that the switch is reachable from the PC that is running the Telnet session (for example, by using a Ping command to the switch’s IP address).

2. Start the Telnet program on a PC that is on the same subnet as the switch and connect to the switch’s IP address.

3. You will see the copyright page and the message “Press any key to continue”. Press a key, and you will then see the switch console command (CLI) prompt, for example:

HP#

Enter help or ? to see a list of commands that can be executed at the prompt. Entering any command followed by help provides more detailed context help information about the command. Entering any command followed by ? displays a list of options that are available at that point in the command entry.

Starting a Web Browser Session

The E2620 Switches can be managed through a graphical interface that you can access from any PC or workstation on the network by running your web browser and typing in the switch’s IP address as the URL. No additional software installation is required to make this interface available; it is included in the switch’s onboard software.

A typical web browser interface screen is shown in the next illustration.

3-5

Configuring the Switch

Using the IP Address for Remote Switch Management

Figure 3-2. Example web browser session

For more information on using the web browser interface, please see the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-14).

3-6

An extensive help system is also available for the web browser interface. To access the help system though, the subnet on which the switch is installed must have access to the internet.

Troubleshooting

This chapter describes how to troubleshoot your HP E2620 Switches. This document describes troubleshooting mostly from a hardware perspective. You can perform more in-depth troubleshooting on these devices using the software tools available with the switches, including the full-featured console interface, the built-in web browser interface, and ProCurve Manager, the SNMP-based network management tool. For more information, see the chapter “Troubleshooting” in the Management and Configuration Guide, which is on the HP Web site at (see page 1-14).

This chapter describes the following:

■ basic troubleshooting tips (page 4-1)

■ diagnosing with the LEDs (page 4-4)

■ proactive networking tools (page 4-9)

■ hardware diagnostic tests (page 4-10)

■ restoring the factory default configuration (page 4-12)

■ downloading new software to the E2620 Switches (page 4-13)

■ HP Customer Support Services (page 4-13)

www.hp.com/networking/support,

Basic Troubleshooting Tips

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

■ Connecting to devices that have a fixed full-duplex configuration.

The RJ-45 ports are configured as “Auto”. That is, when connecting to attached devices, the switch operates 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 mode of half duplex.

4-1

Troubleshooting

Basic Troubleshooting Tips

Caution Because the E2620 Switches behave in this way (in compliance with the

IEEE 802.3 standard), if a device connected to the switch 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.

Ensure all devices connected to the E2620 Switches are configured to auto negotiate, or are configured to connect at half duplex (all hubs are configured this way, for example).

■ Faulty or loose cables. Look for loose or obviously faulty connections.

If the cables appear to be OK, make sure the connections are snug. If that does not correct the problem, try a different cable.

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

network collisions and other network problems, and can seriously impair network performance. Use a new correctly-wired cable or compare your cable to the cable in appendix B, “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. Sample topologies are shown at the end of chapter 2 in this book, and some topology configuration guidelines can be found online at the HP Web site,

www.hp.com/networking/support.

4-2

In addition, you should make sure 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 your Switch, if you wish to build redundant paths between important nodes in your network to provide some fault tolerance, you should 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. Spanning Tree can be enabled through the switch console or the web browser interface.

Basic Troubleshooting Tips

Troubleshooting

The E2620 Switches also support Trunking, which allows multiple network cables to be used for a single network connection without causing a data path loop. For more information on Spanning Tree and Trunking, see the Management and Configuration Guide, which is on the HP Web site at

■ Check the port configuration. A port on your switch may not be

www.hp.com/networking/support, (see page 1-14).

operating as you expect because it has been put into a “blocking” state by Spanning Tree, GVRP (automatic VLANs), or LACP (automatic trunking). (Note that the normal operation of the Spanning Tree, GVRP, and LACP features may put the port in a blocking state.) Or, the port just may have been configured as disabled through software.

Use the switch console to determine the port’s configuration and verify that there is not an improper or undesired configuration of any of the switch features that may be affecting the port. For more information, see the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-14).

For more information on possible network problems and their solutions, refer to the technical note “Troubleshooting LAN Performance and Intermittent Connectivity Problems”, which can be found on the HP Web site,

www.hp.com/networking/support, in the Reference Library section, A-Z Index.

4-3

Troubleshooting

Diagnosing with the LEDs

Table 4-1 shows LED patterns on the switch that indicate problem conditions for general switch operation troubleshooting.

Table 4-2 shows LED patterns that indicate problem conditions for PoE troubleshooting.

LED patterns for General Switch Troubleshooting

1. Check in the table for the LED pattern you see on your switch.

2. Refer to the corresponding diagnostic tip on the next few pages.

Table 4-1. LED Error Indicators

LED Pattern Indicating Problems

Power Fault RPS EPS Te st Fan Port Link LED

Off with

power cord

plugged in

On Prolonged On

On Flashing

On Off

On Flashing Flashing Flashing

This LED is not important for the diagnosis.

The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.

111 11 1

Prolonged On

Flashing

Off Flashing

Off

Flashing

Off with cable

connected

On, but the port is not

communicating

Diagnostic

Tip s

➊

➋

➌

➍

➎

➏

➐

➑

4-4

Diagnostic Tips:

Tip Problem Solution

Diagnosing with the LEDs

Troubleshooting

➊

➋

➌

➍

The switch is not plugged into an active AC power source, or the switch’s power supply may have failed.

A switch hardware failure has occurred. All the LEDs will stay on indefinitely.

The switch has experienced a software failure during self test.

One of the switch cooling fans may have failed.

1. Verify the power cord is plugged into an active power source and to the switch. Make sure these connections are snug.

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 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 for more information.

Try power cycling the switch. If the fault indication reoccurs, the switch may have failed. Call your HP-authorized LAN dealer, or use the electronic support services from HP to get assistance. See the Customer Support/Warranty booklet for more information.

1. Try resetting the switch by pressing the Reset button on the front of the switch, or by power cycling the switch.

2. If the fault indication reoccurs, attach a console to the switch (as indicated in chapter

2) and configure it to operate at 9600 baud. Then, reset the switch. Messages should appear on the console screen and in the console log identifying the error condition. You can view the console log at that point by selecting it from the console Main Menu or by typing “Show log” at the Manager command prompt (#).

If necessary to resolve the problem, contact your HP-authorized LAN dealer, or use the electronic support services from HP to get assistance. See the Customer Support/ Warranty booklet for more information.

Try disconnecting power from the switch and wait a few moments. Then reconnect the power to the switch and check the LEDs again. If the error indication reoccurs, one of the fans has failed. In switches with multiple fans the switch may continue to operate under this condition if the ambient temperature does not exceed normal room temperature, but for best operation, the switch should be replaced. Contact your HP-authorized LAN dealer, or use the electronic support services from HP to get assistance. See the Customer Support/Warranty booklet for more information.

➎

The network port for which the LED is flashing has experienced a self test or initialization failure.

Try power cycling the switch. If the fault indication reoccurs, the switch port may have failed. Call your HP-authorized LAN dealer, or use the electronic support services from HP to get assistance. See the Customer Support/Warranty booklet for more information.

If the port is a mini-GBIC, verify that it is one of the mini-GBICs supported by the switch. Unsupported mini-GBICs will be identified with this fault condition. The supported mini-GBICs are listed in Chapter 2, “Installing the Switch” on page 2-17. The mini-GBICs are also tested when they are “hot-swapped”—installed or changed while the switch is powered on.

To verify the port has failed, remove and reinstall the mini-GBIC without powering off the switch. If the port fault indication reoccurs, you will have to replace the mini-GBIC. Check the event log to see why the mini-GBIC failed.

continued on the next page

4-5

Troubleshooting

Diagnosing with the LEDs

Tip Problem Solution

➏

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 you have used the correct cable type for the connection: – For twisted-pair connections to the fixed 10/100 or 10/100/1000 ports, if the port is

configured to “Auto” (auto negotiate), either straight-through or crossover cables can be used because of the switch’s “Auto-MDIX” feature and the Auto MDI/MDIX feature of the 10/100/1000-T port.

Note: If the switch port configuration is changed to one of the fixed configuration options (for example, 100 Mbps/Full Duplex), then the port operates as MDI-X only and you must use the correct type of cable for the connection. In general, for connecting an end node (MDI port) to the switch, use straight-through cable; for connecting to MDI-X ports on hubs, other switches, and routers, use crossover cable.

– For fiber-optic connections, verify the transmit port on the switch is connected to

the receive port on the connected device, and the switch receive port is connected to the transmit port on the connected device.

• For the dual-personality 10/100/1000-T ports, be sure a mini-GBIC is not installed in the associated slot.

• For 1000Base-T connections, verify the network cabling complies with the IEEE 802.3ab standard. The cable should be installed according to the ANSI/TIA/EIA-568-A-5 specifications. Cable testing should comply with the stated limitations for Attenuation, Near-End Crosstalk, Far-End Crosstalk, Equal-Level Far-End Crosstalk (ELFEXT), Multiple Disturber ELFEXT, and Return Loss.

The cable verification process must include all patch cables from any end devices, including the switch, to any patch panels in the cabling path.

• Verify the port has not been disabled through a switch configuration change. You can use the console interface, or, if you have configured an IP address on the switch, use the web browser interface to determine the state of the port and re-enable the port if necessary.

• Verify the switch port configuration matches the configuration of the attached device. For example, if the switch port is configured as “Auto”, the port on the attached device also MUST be configured as “Auto”. Depending on the port type, twisted-pair or fiberoptic, if the configurations don’t match, the results could be a very unreliable connection, or no link at all.

• If the other procedures don’t resolve the problem, try using a different port or a different cable.

4-6

Tip Problem Solution

Diagnosing with the LEDs

Troubleshooting

➐

➑

The port may be improperly configured, or the port may be in a “blocking” state by the normal operation of the Spanning Tree, LACP, or IGMP features.

RPS or EPS is connected but has experienced a fault.

Use the switch console to see if the port is part of a dynamic trunk (through the LACP feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may have been put into a “blocking” state by those features. The show lacp command displays the port status for the LACP feature; the show spanning-tree command displays the port status for Spanning Tree.

Also check the Port Status screen using the show interfaces command to see if the port has been configured as “disabled”.

Other switch features that may affect the port operation include VLANs and IGMP. Use the switch console to see how the port is configured for these features.

For software troubleshooting tips, see the chapter “Troubleshooting” in the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/

support, (see page 1-14).

Ensure also, that the device at the other end of the connection is indicating a good link to the switch. If it is not, the problem may be with the cabling between the devices or the connectors on the cable.

Refer to the HP Redundant and or External Power Supplies documentation.

4-7

Troubleshooting

Diagnosing with the LEDs

LED Patterns for PoE Troubleshooting

If the PoE Status LED is flashing, that indicates a problem with the delivery of PoE power out one or more switch ports. Press the LED Mode button to put the switch into PoE mode and the port LEDs will show which ports are experiencing the problem. The following tables identify the specific problems that are shown by the LEDs.

1. Check in the table for the LED pattern you see on your switch.

2. Refer to the corresponding diagnostic tip.

Table 4-2. LED Error Indicators

LED Pattern Indicating Problems

Fault PoE Status Port Link Port Mode

Off Fast Flash

Orange

Slow Flash Slow Flash

Orange

Slow Flash

Green

Slow Flash

Green

Off

Diagnostic

Tips

➊

➋

Diagnostic Tips:

Tip Problem Solution

PoE oversubscription

➊

condition. All available PoE power is already taken by higher-priority ports.

PoE hardware fault. A

➋

switch hardware component that is involved with PoE power delivery has failed.

If possible add additional PoE power, or redefine port priorities.

The switch must be replaced.

4-8

Troubleshooting

Proactive Networking

The HP E2620 Switches have built-in management capabilities that proactively help you manage your network including:

■ finding and helping you fix the most common network error conditions

(for example, faulty network cabling, and non-standard network topologies)

■ informing you of the problem with clear, easy-to-understand messages

■ recommending network configuration changes to enhance the

performance of your network

The following interfaces provide tests, indicators, and an event log that can be used to monitor the switch and its network connections and to help you take advantage of these proactive networking features:

■ A graphical web browser interface you can use to manage your switch

from a PC running a supported web browser, for example Microsoft Internet Explorer, and Netscape Communicator.

■ A full-featured easy-to-use console interface you can access by connecting

a standard terminal or PC running a terminal emulator to the switch’s console port. The cable to make that connection is provided with your switch. The console interface is also accessible through a Telnet connection.

For more information on using these software tools to diagnose and manage your switch, see the “Troubleshooting” chapter in the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/

support, (see page 1-14).

4-9

Troubleshooting

Hardware Diagnostic Tests

Testing the Switch by Resetting It

If you believe 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 almost always will resolve any temporary operational problems. These reset processes also cause any network traffic counters to be reset to zero, and cause the System Up Time timer to reset to zero.

Checking the Switch LEDs

The self test passes if the Fault and Self Test LEDs on the front of the switch go off after approximately 50 seconds. If these LEDs stay on longer than 60 seconds or begin flashing, there may be a problem with the switch.

4-10

See “Diagnosing With the LEDs” on the LED patterns.

page 4-4 for information on interpreting

Checking Console Messages

Useful diagnostic messages may be displayed on the console screen when the switch is reset. As described in chapter 2 under step 7, Connect a Console to the Switch connect a PC running a VT-100 terminal emulator program or a standard VT-100 terminal to the switch’s Console Port and configure it to run at 9600 baud, and with the other terminal communication settings shown on

“Configuring the Switch”. Then, when you reset the switch, note the messages

that are displayed. Additionally, you can check the switch event log, which can be accessed from the console using the show log command, or from the console Main Menu after entering the Menu command.

Hardware Diagnostic Tests

Troubleshooting

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 Type 10Base-T, 100Base-TX, or 1000Base-T standards. The twistedpair cables attached to the switch must be compatible with the appropriate standards. To verify your cable is compatible with these standards, use a qualified cable test device.

Testing Switch-to-Device Network Communications

You can perform the following communication tests to verify 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 packets to any

device identified by its MAC address

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

packets to any device identified by its IP address

These tests can be performed through the switch console interface from a terminal connected to the switch or through a Telnet connection, or from the switch’s web browser interface. For more information, see the Management and Configuration Guide, which is on the HP Web site at

networking/support, (see page 1-14).

www.hp.com/

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.

4-11

Troubleshooting

Restoring the Factory Default Configuration

As part of your troubleshooting process on the Switch, it may become necessary to return the switch configuration to the factory default settings. This clears any passwords, clears the console event log, resets the network counters to zero, performs a complete self test, and reboots the switch into its factory default configuration including deleting the IP address, if one is configured.

Note This process removes all switch configuration changes that you have made

from the factory default settings. This includes, for example, configuration of VLANs, Spanning Tree, trunks, and stacking. Returning the configuration of these features to their factory default settings (usually disabling them) may result in network connectivity issues.

If the switch has a valid configuration, and you are restoring the factory default settings for a reason other than configuration problems, you should save the switch configuration prior to performing the factory default reset. Then, after the reset and resolution of the original problem, you can restore the saved configuration to the switch. For both the save and restore processes, you can use the console copy command. For more information on this command, see the Management and Configuration Guide, which is on the HP Web site at

www.hp.com/networking/support, (see page 1-14).

4-12

You can restore the factory default configuration either on the switch itself, or through the switch console.

To execute the factory default reset on the switch, perform these steps:

1. Using pointed objects, simultaneously press both the Reset and Clear buttons on the front of the switch. The power and fault lights come on.

2. Continue to press the Clear button while releasing the Reset button.

3. When the Self Test LED begins to flash, release the Clear button. The switch will then complete its self test and begin operating with its

configuration restored to the factory default settings.

To restore the factory default configuration using the console, execute the erase startup-config command from the console command prompt.

Downloading New Switch Software

Troubleshooting

Downloading New Switch Software

When product enhancements occur for the E2620 Switches, new software can be downloaded to the switch through several methods, for product enhancements and new features. For more information, see the Management and Configuration Guide, which is on the HP Web site at

networking/support, (see page 1-14).

The new switch software would be available on the HP Web site,

www.hp.com/networking/support.

www.hp.com/

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. The HP Web site, provides up-to-date support information.

www.hp.com/networking/support also

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

Before Calling Support

Before calling your networking dealer or HP Support, to make the support process most efficient, you first should retrieve the following information:

Information Item Information Location

• product identification, including mini-GBICs the front of the switch and on labels on the mini-GBICs

• details about the switch’s status including the

software (OS) version, a copy of the switch configuration, a copy of the switch Event Log, and a copy of the switch status and counters information

• copy of your network topology map, including

network addresses assigned to the relevant devices

switch console: show tech command

your network records

4-13

Switch Specifications

Physical

E2620 Non-PoE Switches

E2620-24 (J9623A)

E2620-48 (J9626A)

E2620-PoE+ Switches

E2620-24-PPoE+ (J9624A)

E2620-24-PoE+ (J9625A)

E2620-48-PoE+ (J9627A)

Width

44.3 cm (17.4 in) 25.4 cm (10.0 in) 4.4 cm (1.73 in) 2.58 kg (5.70 lbs)

44.3 cm (17.4 in) 25.4 cm (10.0 in) 4.4 cm (1.73 in) 4.94 kg (6.48 lbs)

44.3 cm (17.4 in) 25.4 cm (10.0 in) 4.4 cm (1.73 in) 3.2 kg (7.04 lbs)

44.3 cm (17.4 in) 36.6 cm (14.4 in) 4.4 cm (1.73 in) 4.83 kg (10.67 lbs)

44.3 cm (17.4 in) 36.6 cm (14.4 in) 4.4 cm (1.73 in) 5.22 kg (11.53 lbs)

Depth Height Weight

Electrical

E2620 Non-PoE Switches

E2620-24 (J9623A)

E2620-48 (J9626A)

E2620-PoE+ Switches

E2620-24-PPoE+ (J9624A)

AC voltage Maximum current Frequency range

100-127 volts 200-240 volts

0.43A

0.27A

0.68A

0.39A

1.8A

0.97A

50/60 Hz 50/60 Hz

E2620-24-PoE+ (J9625A)

E2620-48-PoE+ (J9627A)

100-127 volts 200-240 volts

4.9A

2.5A

5.6A

2.8A

50/60 Hz 50/60 Hz

The switch automatically adjusts to any voltage between 100-127 or 200-240 volts and either 50 or 60 Hz.

A-1

Switch Specifications

RPS/EPS Electrical Input

E2620 Non-PoE Switches

E2620-24 (J9623A) RPS Input

E2620-48 (J9626A) RPS Input

AC voltage Input voltage Maximum current

EPS Input

+12 VDC

N/A

+12 VDC

N/A

2.5A N/A

5.0A N/A

E2620-PoE+ Switches

E2620-24-PPoE+ (J9624A)

E2620-24-PoE+ (J9625A)

E2620-48-PoE+ (J9627A)

RPS Input EPS Input

+12 VDC

N/A

+12 VDC +54 VDC

3.0A N/A

4.0A

8.0A

4.0A

8.0A

Environmental

E2620 Switches 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)

A-2

Maximum altitude 3.0 Km (10,000 ft)* 4.6 Km (15,000 ft)

* The operating maximum altitude should not exceed that of any accessory being connected

to any switch in the E2620 series.

BTU Ratings

Switch Model Combined BTU

E2620-24-PPoE+ 827 181

E2620-24-PoE+ 2281 410

E2620-48-PoE+ 2281 410

E2620-24 Non-PoE 142

E2620-48 Non-PoE 285

Includes switch and maximum number of PoE powered devices

connected to the switch at 30 watts.

Switch only BTU

Switch Specifications

Acoustics

Non-PoE+ Switches

Switch E2620-24 (J9623A) No fans.

Switch E2620-48 (J9626A)

Geraeuschemission LwA=24.5 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19 Noise Emission LpA=36.5 dB at virtual work space according to DIN 45635 T.19

PoE+ switches

Switch E2620-24-PPoE+ (J9624A)

Geraeuschemission LwA=25.9 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19 Noise Emission LpA=37.1 dB at virtual work space according to DIN 45635 T.19

Switch E2620-24-PoE+ (J9625A)

Geraeuschemission LwA=29.7 dB am fiktiven Arbeitsplatz nach DIN 45635 T. 19 Noise Emission LpA=34.0 dB at virtual work space according to DIN 45635 T. 19

Switch E2620-48-PoE+ (J9627A)

Geraeuschemission LwA=25.3 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19 Noise Emission LpA=34.0 dB at virtual work space according to DIN 45635 T.19

RPS/EPS Connectors

■ EPS connector: A 2x7 Molex Micro-Fit connector should be used for EPS

connection.

■ RPS connector: A 2x7 connector is provided for external RPS connection

on the power supply module.

Cable Length

■ EPS cables are 2.0 meters (6.56 feet) in length

■ RPS cables are 1.25 meters (4.10 feet) in length

A-3

Switch Specifications

Safety

Complies with:

■ EN60950-1/IEC60950-1

■ CSA 22.2 No. 60950-1

■ UL 60950-1

Standards

Table A-1. Technology Standards and Safety Compliance

Laser safety information

Technology Compatible

10-T

100-TX

1000-T

100-FX

100-BX

1000-SX

1000-LX

1000-LH

with these IEEE

standards

IEEE 802.3 10BASE-T

IEEE 802.3u 100BASE-TX

IEEE 802.3ab 1000BASE-T

IEEE 802.3u 100BASE-FX

IEEE 802.3ah 100BASE-BX10

IEEE 802.3z 1000BASE-SX

IEEE 802.3z 1000BASE-LX

(not an IEEE standard)

EN/IEC

standard

compliance

EN/IEC 60825 Class 1 Laser

SFP

("mini-GBIC")

Lasers

Product Laser Klasse 1

A-4

1000-BX

IEEE 802.3ah 1000BASE-BX10

EN/IEC 60825 Class 1 Laser

Product Laser Klasse 1

Cabling and Technology Information

This appendix includes network cable information for cables that should be used with the Switch E2620, 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.

Cabling specifications

Table B-2. Cabling Specifications

10 Mbps Operation Category 3, 4 or 5, 100-ohm unshielded twisted-pair (UTP) or

Twisted-pair copper

Multimode fiber

Single mode fiber

A mode conditioning patch cord may be needed for some Gigabit-LX installations.

See “Mode Conditioning Patch Cord” on page B-3 for more information.

100 Mbps Operation Category 5, 100-ohm UTP or STP cable, complying with IEEE 802.3u

1000 Mbps Operation Category 5, 100-ohm 4-pair UTP or STP cable, complying with IEEE

Note on 1000Base-T Cable Requirements

The Category 5 networking cables that work for 100Base-TX connections should also work for1000Base-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).

shielded twisted-pair (STP) cable, complying with IEEE 802.3 10BASE-T specifications.

100BASE-TX specifications.

802.3ab 1000BASE-T specifications—Category 5e or better is recommended. See note on 1000BASE-T Cable Requirements below.

62.5/125 μm or 50/125 μm (core/cladding) diameter, low metal content, graded index fiber-optic cables, complying with the ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a standards respectively.

9/125 μm (core/cladding) diameter, low metal content fiber-optic cables, complying with the ITU-T G.652 and ISO/IEC 793-2 Type B1 standards.

B-1

Cabling and Technology Information

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. Cabling plants 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) 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.

Technology distance specifications

Table B-3. Technology Distance Specifications

Technology Supported cable type Multimode fiber

100-FX multimode fiber any up to 2,000 meters

100-BX single mode fiber N/A 0.5 - 10,000 meters

1000-T twisted-pair copper N/A up to 100 meters

1000-SX multimode fiber 160 MHz*km

1000-LX multimode fiber

single mode fiber

1000-LH single mode fiber N/A 10 - 70,000 meters

1000-BX single mode fiber N/A 0.5 - 10,000 meters

For distances less than 20km, a 10dB attenuator must be used. For distances between 20km and 40km, a 5dB

attenuator must be used. Attenuators can be purchased from most cable vendors.

modal bandwidth

200 MHz*km 400 MHz*km 500 MHz*km

400 MHz*km 500 MHz*km N/A

Supported distances

2 - 220 meters 2 - 275 meters 2 - 500 meters 2 - 550 meters

2 - 550 meters 2 - 550 meters 2 - 10,000 meters

B-2

Cabling and Technology Information

Mode Conditioning Patch Cord

The following information applies to installations in which multimode fiberoptic cables are connected to a Gigabit-LX port. Multimode cable has a design characteristic called “Differential Mode Delay”, which requires the transmission signals be “conditioned” to compensate for the cable design and thus prevent resulting transmission errors.

Under certain circumstances, depending on the cable used and the lengths of the cable runs, an external Mode Conditioning Patch Cord may need to be installed between the Gigabit-LX transmitting device and the multimode network cable to provide the transmission conditioning. If you experience a high number of transmission errors on those ports, usually CRC or FCS errors, you may need to install one of these patch cords between the fiber-optic port in your switch and your multimode fiber-optic network cabling, at both ends of the network link.

The patch cord consists of a short length of single mode fiber cable coupled to graded-index multimode fiber cable on the transmit side, and only multimode cable on the receive side. The section of single mode fiber is connected in such a way that it minimizes the effects of the differential mode delay in the multimode cable.

Note Most of the time, if you are using good quality graded-index multimode fiber

cable that adheres to the standards listed in Appendix B, there should not be a need to use mode conditioning patch cords in your network. This is especially true if the fiber runs in your network are relatively short.

Installing the Patch Cord

As shown in the illustration below, connect the patch cord to the ProCurve transceiver with the section of single mode fiber plugged in to the Tx (transmit) port. Then, connect the other end of the patch cord to your network cabling patch panel, or directly to the network multimode fiber.

If you connect the patch cord directly to the network cabling, you may need to install a female-to-female adapter to allow the cables to be connected together.

B-3

Cabling and Technology Information

To network

multimode

cabling

Mode Conditioning

Patch Cord

Gigabit-LX port

Single-mode section plugs into Tx port on Gigabit-LX Transceiver or

Gigabit-LX mini-GBIC

The multimode cable in the patch cord must match the characteristics of your

network cable

LC Connector

Twisted-Pair Cable/Connector Pin-Outs

Figure B-1. Connecting a patch cord

Make sure you purchase a patch cord that has appropriate connectors on each end, and has multimode fibers that match the characteristics of the multimode fiber in your network. Most important, the core diameter of the multimode patch cord must match the core diameter of the multimode cable infrastructure (either 50 or 62.5 microns).

Twisted-Pair Cable/Connector Pin-Outs

The Auto-MDIX Feature:

In the default configuration, “Auto”, the fixed 10/100Base-TX ports on the E2620 Switches all automatically detect the type of port on the connected device and operate as either an MDI or MDI-X port, whichever is appropriate. So for any connection, a straight-through twisted-pair cable can be used—you no longer have to use crossover cables, although crossover cables can also be used for any of the connections. (The 10/100/1000-T ports support the IEEE

802.3ab standard, which includes the “Auto MDI/MDI-X” feature, which operates the same way.)

If you connect a E2620 or E2620-PoE+ Switch twisted-pair port to another switch or hub, which typically have MDI-X ports, the E2620 Switch port automatically operates as an MDI port. If you connect it to an end node, such as a server or PC, which typically have MDI ports, the E2620 Switch port operates as an MDI-X port. In all cases, you can use standard straight-through cables or crossover cables.

If you happen to use a correctly wired crossover cable, though, the switch will still be able to automatically detect the MDI/MDI-X operation and link correctly to the connected device.

B-4

Cabling and Technology Information

Twisted-Pair Cable/Connector Pin-Outs

Other Wiring Rules:

■ All twisted-pair wires used for 10 Mbps, and 100 Mbps operation must be

twisted through the entire length of the cable. The wiring sequence must conform to EIA/TIA 568-B (not USOC). See “Twisted-Pair Cable Pin Assignments” later in this appendix for a listing of the signals used on each pin.

■ For 1000Base-T connections, all four pairs of wires in the cable must be

available for data transmission. See “Note on 1000Base-T Cable Require-

ments” on page B-1 for more information on 1000Base-T cabling.

■ For 10 Mbps connections to the ports, you can use Category 3, 4, or 5

unshielded twisted-pair cable, as supported by the IEEE 802.3 Type 10Base-T standard.

■ For 100 Mbps connections to the ports, use 100-ohm Category 5 UTP or

STP cable only, as supported by the IEEE 802.3u Type 100Base-TX standard.

■ For 1000 Mbps connections, 100-ohm Category 5e or better cabling is

recommended.

■ To provide Power over Ethernet to the access point, all 4 pairs must be

connected for any network cable attached to this port; the cable must meet ISO/DIS 11801 Class D requirements and IEEE 802.3af requirements.

B-5

Cabling and Technology Information

Twisted-Pair Cable/Connector Pin-Outs

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

Because of the Auto-MDIX operation of the 10/100 ports on the switch, for all network connections, to PCs, servers or other end nodes, or to hubs or other switches, you can use straight-through cables.

If any of these ports are given a fixed configuration, for example 100 Mbps/ Full Duplex, the ports operate as MDI-X ports, and straight-through cables must be then used for connections to PC NICs and other MDI ports.

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 + receive transmit + transmit -

B-6

1 2 3 6

transmit + transmit receive + receive -

Cabling and Technology Information

Twisted-Pair Cable/Connector Pin-Outs

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

The Auto-MDIX operation of the 10/100 ports on the switch also allows you to use crossover cables for all network connections, to PCs, servers or other end nodes, or to hubs or other switches.

If any of these ports are given a fixed configuration, for example 100 Mbps/ Full Duplex, the ports operate as MDI-X ports, and crossover cables must be then used for connections to hubs or switches or other MDI-X network devices.

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 + receive transmit + transmit -

1 2 3 6

6 3 2 1

transmit transmit + receive receive +

B-7

Cabling and Technology Information

Twisted-Pair Cable/Connector Pin-Outs

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

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

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 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.

B-8

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

Caution A Caution in the manual denotes a hazard that can damage equip-

Grounding

These are safety class I products and have protective earthing terminals. There must be an uninterruptible safety earth ground from the main power source to the product's input wiring terminals, power cord, or supplied power cord set. Whenever it is likely that the protection has been impaired, disconnect the power cord until the ground has been restored.

For LAN cable grounding:

■ If your LAN covers an area served by more than one power distribu-

tion system, be sure their safety grounds are securely interconnected.

■ LAN cables may occasionally be subject to hazardous transient volt-

ages (such as lightning or disturbances in the electrical utilities power grid). Handle exposed metal components of the network with caution.

Servicing

There are no user-serviceable parts inside these products. Any servicing, adjustment, maintenance, or repair must be performed only by service-trained personnel.

or death.

ment.

Do not proceed beyond a WARNING or Caution notice until you have understood the hazardous conditions and have taken appropriate steps.

These products do not have a power switch; they are powered on when the power cord is plugged in.

C-1

Safety and EMC Regulatory Statements

Informations concernant la sécurité

Symbole de référence à la documentation. Si le produit est marqué de ce symbole, reportez-vous à la documentation du produit afin d'obtenir des informations plus détaillées.

WARNING Dans la documentation, un WARNING indique un danger susceptible

Caution Un texte de mise en garde intitulé Caution indique un danger suscep-

Cet appareil est un produit de classe I et possède une borne de mise à la terre. La source d'alimentation principale doit être munie d'une prise de terre de sécurité installée aux bornes du câblage d'entrée, sur le cordon d'alimentation ou le cordon de raccordement fourni avec le produit. Lorsque cette protection semble avoir été endommagée, débrancher le cordon d'alimentation jusqu'à ce que la mise à la terre ait été réparée.

Mise à la terre du câble de réseau local:

■ si votre réseau local s'étend sur une zone desservie par plus d'un système de

distribution de puissance, assurez-vous que les prises de terre de sécurité soient convenablement interconnectées.

■ Les câbles de réseaux locaux peuvent occasionnellement être soumis à des

surtensions transitoires dangereuses (telles que la foudre ou des perturbations dans le réseau d'alimentation public). Manipulez les composants métalliques du réseau avec précautions.

Aucune pièce contenue à l'intérieur de ce produit ne peut être réparée par l'utilisateur. Tout dépannage, réglage, entretien ou réparation devra être confié exclusivement à un personnel qualifié.

d'entraîner des dommages corporels ou la mort.

tible de causer des dommages à l'équipement.

Ne continuez pas au-delà d'une rubrique WARNING ou Caution avant d'avoir bien compris les conditions présentant un danger et pris les mesures appropriées.

Cet appareil ne comporte pas de commutateur principal; la mise sous tension est effectuée par branchement du cordon d'alimentation.

C-2

Hinweise zur Sicherheit

Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation nach, um mehr Informationen über das Produkt zu erhalten.

Safety and EMC Regulatory Statements

Hinweise zur Sicherheit

WARNING Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die

Caution Caution in der Dokumentation symbolisiert eine Gefahr, die dis Gerät

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 Stromverteilungs-

system beliefert wird, müssen Sie sich vergewissern, daß die Sicherheitserdungen fest untereinander verbunden sind.

■ LAN-Kabel können gelegentlich gefährlichen Übergangsspannungen ausge-

setzt werden (beispielsweise durch Blitz oder Störungen in dem Starkstromnetz des Elektrizitätswerks). Bei der Handhabung exponierter Metallbestandteile des Netzwerkes Vorsicht walten lassen.

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

Verletzungen oder sogar Todesfälle verursachen kann.

beschädigen kann.

Fahren Sie nach dem Hinweis WARNING oder Caution erst fort, nachdem Sie den Gefahrenzustand verstanden und die entsprechenden Maßnahmen ergriffen haben.

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

C-3

Safety and EMC Regulatory Statements

Considerazioni sulla sicurezza

Simbolo di riferimento alla documentazione. Se il prodotto è contrassegnato da questo simbolo, fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso.

WARNING La dicitura WARNINGdenota un pericolo che può causare lesioni o

Caution La dicituraCaution denota un pericolo che può danneggiare le attr-

Questo prodotto è omologato nella classe di sicurezza I ed ha un terminale protettivo di collegamento a terra. Dev'essere installato un collegamento a terra di sicurezza, non interrompibile che vada dalla fonte d'alimentazione principale ai terminali d'entrata, al cavo d'alimentazione oppure al set cavo d'alimentazione fornito con il prodotto. Ogniqualvolta vi sia probabilità di danneggiamento della protezione, disinserite il cavo d'alimentazione fino a quando il collegaento a terra non sia stato ripristinato.

Per la messa a terra dei cavi LAN:

■ se la vostra LAN copre un'area servita da più di un sistema di distribuzione

elettrica, accertatevi che i collegamenti a terra di sicurezza siano ben collegati fra loro;

■ i cavi LAN possono occasionalmente andare soggetti a pericolose tensioni

transitorie (ad esempio, provocate da lampi o disturbi nella griglia d'alimentazione della società elettrica); siate cauti nel toccare parti esposte in metallo della rete.

Nessun componente di questo prodotto può essere riparato dall'utente. Qualsiasi lavoro di riparazione, messa a punto, manutenzione o assistenza va effettuato esclusivamente da personale specializzato.

morte.

ezzature.

Non procedere oltre un avviso di WARNING o di Cautionprima di aver compreso le condizioni di rischio e aver provveduto alle misure del caso.

Questo apparato non possiede un commutatore principale; si mette scotto tensione all'inserirsi il cavo d'alimentazione.

C-4

Safety and EMC Regulatory Statements

Consideraciones sobre seguridad

Símbolo de referencia a la documentación. Si el producto va marcado con este símbolo, consultar la documentación del producto a fin de obtener mayor información sobre el producto.

WARNING Una WARNING en la documentación señala un riesgo que podría

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 alimentación eléctrica hasta las bornas de los cables de entrada del aparato, el cable de alimentación o el juego de cable de alimentación suministrado. Si existe la probabilidad de que la protección a tierra haya sufrido desperfectos, desenchufar el cable de alimentación hasta haberse subsanado el problema.

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

■ Si la LAN abarca un área cuyo suministro eléctrico proviene de más de una

red de distribución de electricidad, cerciorarse de que las puestas a tierra estén conectadas entre sí de modo seguro.

■ Es posible que los cables de la LAN se vean sometidos de vez en cuando a

voltajes momentáneos que entrañen peligro (rayos o alteraciones en la red de energía eléctrica). Manejar con precaución los componentes de metal de la LAN que estén al descubierto.

Este aparato no contiene pieza alguna susceptible de reparación por parte del usuario. Todas las reparaciones, ajustes o servicio de mantenimiento debe realizarlos solamente el técnico.

resultar en lesiones o la muerte.

resultar en averías al equipo.

No proseguir después de un símbolo de WARNING o Caution hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas.

Este producto no tiene interruptor de potencia; se activa cuando se enchufa el cable de alimentación.

C-5

Safety and EMC Regulatory Statements

Informações de Segurança

AVISO Um AVISO no manual indica um perigo que possa causar ferimentos

Símbolo de referência à documentação. Se o produto estiver marcado com este símbolo, consulte a documentação do produto para obter mais informações sobre ele.

ou morte.

Cuidado Um Cuidado no manual indica um perigo que possa danificar o

Aterramento

Estes são produtos de classe de segurança I, e contam com terminais de aterramento protetores. É preciso haver um aterramento de segurança ininterrupto da principal fonte de energia até os terminais de ligação de entrada, o cabo de alimentação ou o conjunto de cabo de alimentação do produto. Sempre que parecer provável que a proteção tenha sido danificada, desconecte o cabo de alimentação até que o aterramento seja restaurado.

Para aterramento de cabo de LAN:

■ Caso sua LAN cubra uma área servida por mais de um sistema de

distribuição de energia, certifique-se de que os aterramentos de segurança deles estejam interconectados com segurança.

■ Os cabos de LAN podem ocasionalmente estar sujeitos a tensões tran-

sitórias perigosas (como raios ou perturbações na rede de energia). Tenha cuidado ao manipular componentes metálicos da rede.

Manutenção

Não há peças internas que possam sofrer manutenção pelo usuário nestes produtos. Qualquer manutenção, ajuste ou reparo deve ser realizado apenas por pessoal treinado.

equipamento.

Não passe por um AVISO ou uma indicação de Cuidado sem entender as condições de perigo e tomar as atitudes apropriadas.

Estes produtos não têm um botão liga/desliga; eles são ativados quando o cabo de alimentação é conectado.

C-6

Safety and EMC Regulatory Statements

Safety Information (Japan)

Japan Power Cord Warning

C-7

Safety and EMC Regulatory Statements

Safety Information (China)

C-8

Safety and EMC Regulatory Statements

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

C-9

Safety and EMC Regulatory Statements

EMC Regulatory Statements

Korea

Taiwan

C-10

Hp 2620-48-PoE+ (J9627A) User Manual [ru]

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Introducing the Switch

Front of the Switch

Network Ports

LEDs

Port LEDs

LED Mode Select Button and Indicator LEDs

Reset Button

Clear Button

Back of the Switch

Console Port

Switch Features

RPS and EPS Input Port

Power Connector

Installing the Switch

Included Parts

Installation Precautions

Installation Procedures

1. Prepare the Installation Site

2. Verify the Switch Passes Self Test

LED Behavior

3. Mount the Switch

Rack or Cabinet Mounting

Rack Mounting the E2620-PoE+ switches

Rack Mounting the Non-PoE+ Switches

Flat Wall Mounting (non-PoE+ models only)

Horizontal Surface Mounting

4. Connect the Switch to a Power Source

5. Connect the Network Cables

Using the RJ-45 Connectors

6. Installing or removing SFP transceivers (mini-GBICs)

Installing the SFP transceivers:

Removing the SFP transceiver

Connecting Cables to SFP transceivers

RPS/EPS Operation

Operating Characteristics of the external power supplies

External Power Supply LEDs

External Power Supply Connectivity

8. (Optional) Connect a Console to the Switch

Terminal Configuration

Direct Console Access

Sample Network Topologies for Non-PoE+ Switches

As a Desktop Switch

As a Segment Switch

Connecting to a Backbone Switch

Sample Network Topologies for PoE+ Switches

As a Desktop Switch Implementing PoE+

As a Segment Switch Implementing PoE

Stacking the Switch

Configuring the Switch

Recommended Minimal Configuration

Using the Console Setup Screen

Where to Go From Here

Using the IP Address for Remote Switch Management

Starting a Telnet Session

Starting a Web Browser Session

Troubleshooting

Basic Troubleshooting Tips

Diagnosing with the LEDs

LED patterns for General Switch Troubleshooting

LED Patterns for PoE Troubleshooting

Proactive Networking

Hardware Diagnostic Tests

Testing the Switch by Resetting It

Checking the Switch LEDs

Checking Console Messages

Testing Twisted-Pair Cabling

Testing Switch-to-Device Network Communications

Testing End-to-End Network Communications

Restoring the Factory Default Configuration

Downloading New Switch Software

HP Customer Support Services

Before Calling Support

Physical

Electrical

RPS/EPS Electrical Input