HP E2620 User manual

Power over Ethernet
HP E2620 Switches
Installation and Getting Started Guide

HP E2620 Switches
Installation and Getting Started Guide

Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5552
Roseville, California 95747-5552
www.hp.com/networking
© Copyright 2011, 2012, 2013 Hewlett-Packard
Development Company, L.P.
Publication Number
5998-0902
January 2013
Applicable Products
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.
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”.
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)

iii
Contents
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

iv
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

v
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

vi
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

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

viii

1-1
1
Introducing the Switch
The HP E2620 Switches are multiport switches that can be used to build high-
performance switched workgroup networks. These switches are store-and-
forward devices that offer low latency for high-speed networking. The non-
PoE 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.
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)

1-2
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.
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:
Table 1-1. Optional Network Connectivity, Speeds and Technologies
Transceiver Form-
Factor and
Connector1
Speed Technology Cabling SFP ("mini-GBIC")
Connector
100 Mbps 100-FX Fiber (multimode) LC
100-BX Fiber (single mode) LC
1 Gbps
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
1For 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.
– SelectProduct support information.ThenclickonManualsand find the Transceiver
Support Matrix.
For technical details of cabling and technologies see "Cabling and Technology Information"
in the appendices.

1-3
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.

1-4
Introducing the Switch
Table 1-1. RPS/EPS Compatibility Matrix
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.
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

1-5
Introducing the Switch
Front of the Switch
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 ports1Uplink ports
(1000Base-T2and 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 ports1Uplink ports
(1000Base-T2and Mini-GBIC)
Switch port LEDs
RPS, EPS, Fan and
Test Status LEDs
Power
and Fault
LEDs
Console
Port
HP E2620-24 Switch (J9623A)
1 All 10/100Base-TX RJ-45 ports have the Auto-MDIX feature.
2 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-T2and Mini-GBIC)
RPS and Test
Status LEDs
Power
and Fault
LEDs

1-6
Introducing the Switch
Front of the Switch
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
Switch LEDs State Meaning
Power
(green) On The internal power supply is working properly.
Off No power connection. The switch is NOT receiving power.
Flashing2Afailureoftheinternalpowersupply.Itshouldbe 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.)
Fault
(orange) 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.

1-7
Introducing the Switch
Front of the Switch
Locator
(blue)
On
Flashing
Off
The Locator LED is used to locate a specific switch in an area full of
switches. The LED canbe set to be on solid or flash for a specified number
of minutes (1-1440). The default is 30 minutes. Use the command
“chassislocate”.
PoE
(green/
orange)3
On
Flashing/
orange2
Flashing/
orange1
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.
RPS Status
(green/
orange)
On
Flashing
orange1
Off
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.
EPS Status 3
(green)
On
Flashing
orange1
Off
The switch is connected to an external power supply and operating
correctly.
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
is connected but the external power supply is not powered up.
Fan
(green/
orange)
On The cooling fan is operating normally.
Flashing
orange2The cooling fan has failed. The switch Fault LED will be flashing
simultaneously.
Switch LEDs State Meaning

1-8
Introducing the Switch
Front of the Switch
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.
Test
(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 mini-
GBIC into the switch; the mini-GBIC is tested when it is hot swapped.
Flashing
orange2A component of the switch has failed its self test. The switch Fault LED,
Test LED, and the failed component LED will flash simultaneously.
1The flashing behavior is an on/off cycle once every 0.8 seconds approximately, a fast flash.
2The flashing behavior is an on/off cycle once every 1.6 seconds approximately, a slow flash.
3HP E2620-24-PoE+ (J9625A) and HP E2620-48-PoE+ Switch (J9627A) Switches only.
Switch LEDs State Meaning

1-9
Introducing the Switch
Front of the Switch
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
Port LEDs Displays port link information, network activity information, whether the port is
configured for full-duplex operation, or the speed of the connection depending on the
LED Mode selected. See “LEDMode Select Button and Indicator LEDs” on the next page
for more information.
Mini-GBIC
LEDs:
Link Flashing
orange One of the following conditions exist:
• 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.
Link and Mode
(green)
On for 2
seconds 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.
Switch E2620-PoE Switches
Link
(green)
On The port is enabled and receiving a link indication from the connected
device. In PoE+ mode, indicates that the port is configured to enable PoE
power delivery to the connected device.
Off One of these condition exists:
• no active network cable is connected to the port
• the port is not receiving link beat or sufficient light
• theporthasbeendisabledthrough the switch console, the web browser
interface, ProCurve Manager, or other network management tool.
• InPoE+ mode,indicates thattheport isconfiguredsuchthat PoE+power
delivery is disabled.
Flashing1The port has failed self test. The switch Fault, and Self Test LEDs will flash
simultaneously.
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.
1The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.

1-10
Introducing the Switch
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 multiple-
display LEDs for each port.
Figure 1-2. E2620 non-PoE Switches
Figure 1-3. E2620-PoE+ Switches
Mode LED
Link LED
LED Mode select button
and indicator LEDs
The non-PoE+ switches, have two
LEDs per port. The Link status is al-
ways shown by the Link LED. The op-
eration 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 de-
fault 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