HP ProCurve 2824 User manual

hp procurve
switch 2800 series
installation and
getting started guide
www.hp.com/go/hpprocurve

HP ProCurve Switch 2800 Series
Installation and Getting Started Guide

© Copyright 2003 Hewlett-Packard Development Company,
L.P. The information contained herein is subject to change
without notice.
This document contains proprietary information, which is
protected by copyright. No part of this document may be
photocopied, reproduced, or translation into another language
without the prior written consent of Hewlett-Packard.
Publication Number
5990-3093
August 2003
Applicable Products
Trademark Credits
Windows NT®, Windows®, and MS Windows® are US
registered trademarks of Microsoft Corporation.
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 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.
HP ProCurve Switch 2824 (J4903A)
HP ProCurve Switch 2848 (J4904A)

1
Contents
1 Introducing the Switch
Front of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
LED Mode Select Button and Indicator LEDs . . . . . . . . . . . . . . . . . . . . 1-7
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Clear Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Back of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
2 Installing the Switch
Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2. Installing or Removing mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3. Verify the Switch Passes Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
4. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Rack Mounting the Switch 2848 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Rack Mounting the Switch 2824 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
5. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-17
6. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Connecting Cables to mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2
7. (Optional) Connect a Redundant Power Supply to the
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
8. (Optional) Connect a Console to the Switch . . . . . . . . . . . . . . . . . . 2-22
Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
As a Segment Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Connecting to a Backbone Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Stacking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
The Switch in a Redundant Topology . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
3 Configuring the Switch
Recommended Minimal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using the Console Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
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
Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Testing Switch-to-Device Network Communications . . . . . . . . . . . . 4-10
Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . 4-10
Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . 4-11
Downloading New Switch Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

3
Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
A Switch Specifications
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Acoustic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Lasers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
B Switch Ports and Network Cables
Switch Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Twisted-Pair Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Mode Conditioning Patch Cord for Gigabit-LX . . . . . . . . . . . . . . . . . B-3
Installing the Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Recommended Patch Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . B-5
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

4
Consideraciones sobre seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Safety Information (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Safety Information (China) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Australia/New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10

1-1
Introducing the Switch
1
Introducing the Switch
The HP ProCurve Switch 2824 and Switch 2848 are multiport Gigabit switches
that can be used to build high-performance switched workgroup networks.
These switches are store-and-forward devices offering low latency for high-
speed networking.
Throughout this manual, these switches will be abbreviated as the Switch 2824
or Switch 2848 and collectively as the Switch 2800 Series devices.
The Switch 2824 and Switch 2848 have, respectively, 24 or 48 auto-sensing
10/100/1000Base-T RJ-45 ports, four dual-personality ports—either auto-
sensing 10/100/1000Base-T RJ-45 or mini-GBIC.
The Switch 2800 Series devices can be connected to an HP ProCurve EPS/RPS
(J8168A) and receive full redundant power from that unit. If the internal power
supply in the switch fails, the EPS/RPS unit will immediately provide all the
power necessary to keep the switch running.
Power
Fault
hp procurve
switch
2824
J4903A
Console 10/100/1000-T Ports (1
- 20)  Ports are IEEE Auto MDI/MDI-X
20
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps
LED
Mode
1
tatus
Clear
Reset
9
719
Dual-Personality Ports: 10/100/1000-T (T) or Mini-GBIC (M)  T ports are IEEE Auto MDI/MDI-X
Fan
RP
Test
Lnk
Act
FDx
pd
18
46810 14 16 17 20
57911
12 13 15 19
31 2
21 22 23 24
TMTMTMTM
T
M
T
M
T
M
T
M
Use only one (T or M) for each Dual-Personality Port
!
HP ProCurve Switch 2824 (HPJ4903A)
LED
Mode
Clear
Reset
4543 44
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps 10/100/1000Base-T Ports (1 - 44, 45T, 46T, 47T, 48T)  Ports are IEEE Auto MDI/MDI-X
115 17
16 18
31
32
33
34 44
48
47
TMTM
Power
Fault
hp procurve
switch
2848
J4904A
123
pd
Lnk
Act
FDx
Test
RP
tatus
46
45
TMTM
43
Fan
Dual-Personality Ports: 10/100/1000-T (T) or Mini-GBIC (M)
!
Use only one (T or M) for each Port
HP ProCurve Switch 2848 (HPJ4904A)

1-2
Introducing the Switch
Introducing the Switch
These switches are designed to be used primarily as a high-density wiring
closet or desktop switch. These switches can directly connect computers,
printers, and servers to provide dedicated bandwidth to those devices, and can
build a switched network infrastructure by connecting the switch to hubs,
other switches, or routers. In addition, the Switch 2800 Series devices offer
full network management capabilities.
This chapter describes the HP ProCurve Switch 2824 and Switch 2848,
including:
■front and back of the switches
■switch features

1-3
Introducing the Switch
Front of the Switch
Introducing the Switch
Front of the Switch
Network Ports
■24 or 48 auto-sensing 10/100/1000Base-T ports.
All these ports have the “IEEE Auto MDI/MDI-X” feature, which means
you can use either straight-through or crossover twisted-pair cables to
connect any network devices to the switch.
Power
Fault
hp procurve
switch
2824
J4903A
Console 10/100/1000-T Ports (1
- 20)  Ports are IEEE Auto MDI/MDI-X
20
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps
LED
Mode
1
tatus
Clear
Reset
9
719
Dual-Personality Ports: 10/100/1000-T (T) or Mini-GBIC (M)  T ports are IEEE Auto MDI/MDI-X
Fan
RP
Test
Lnk
Act
FDx
pd
18
46810 14 16 17 20
57911
12 13 15 19
31 2
21 22 23 24
TMTMTMTM
T
M
T
M
T
M
T
M
Use only one (T or M) for each Dual-Personality Port
!
HP ProCurve Switch 2824
* 10/100/1000Base-T ports have the IEEE Auto MDI/MDI-X feature.
** On the Switch 2848, the console port is located on the back of the unit.
Power
and Fault
LEDs
Test, Fan and RPS
Status LEDs
Switch port LEDs
Console port**
Reset and Clear
buttons
LED Mode select button
and indicator LEDs 10/100/1000Base-T RJ-45 ports* Dual-personality ports
(10/100/1000Base-T* or
mini-GBIC)
LED
Mode
Clear
Reset
4543 44
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps 10/100/1000Base-T Ports (1 - 44, 45T, 46T, 47T, 48T)  Ports are IEEE Auto MDI/MDI-X
115 17
16 18
31
32
33
34 44
48
47
TMTM
Power
Fault
hp procurve
switch
2848
J4904A
123
pd
Lnk
Act
FDx
Test
RP
tatus
46
45
TMTM
43
Fan
Dual-Personality Ports: 10/100/1000-T (T) or Mini-GBIC (M)
!
Use only one (T or M) for each Port
HP ProCurve Switch 2848
Power
and Fault
LEDs
Test, Fan and RPS
Status LEDs
Reset and Clear
buttons
LED Mode select button
and indicator LEDs 10/100/1000Base-T RJ-45 Dual-personality ports
(10/100/1000Base-T* or
mini-GBIC)
Switch port LEDs

1-4
Introducing the Switch
Front of the Switch
Introducing the Switch
■Four dual-personality ports. Use either the 10/100/1000Base-T RJ-45
connector, or install a supported HP ProCurve mini-GBIC for fiber-optic
connections.
The RJ-45 connectors support the IEEE Auto MDI/MDI-X feature, which
means you can use either straight-through or crossover twisted-pair
cables to connect any network device to the switch.
Dual-Personality Port Operation. By default, the RJ-45 connectors are
enabled. If a mini-GBIC is installed in a slot, it is enabled and the associated
RJ-45 connector is disabled and cannot be used. If the mini-GBIC is removed,
the associated RJ-45 port is automatically re-enabled.

1-5
Introducing the Switch
Front of the Switch
Introducing the Switch
LEDs
Table 1-1. Switch LEDs
Switch LEDs State Meaning
Power
(green)
On
Off
The switch is receiving power.
The switch is NOT receiving power.
Fault
(orange)
Off The normal state; indicates there are no fault conditions on the switch.
Blinking* A fault has occurred on the switch, one of the switch ports, or the fan. The Status LED
for the component with the fault will blink simultaneously. If just the Fault LED is blinking,
the switch could be attached to an RPS but not receiving power.
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.
Test
(green)
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
self tested when it is hot swapped.
Blinking* A component of the switch has failed its self test. The status LED for that component,
for example an RJ-45 port, and the switch Fault LED will blink simultaneously.
Port LEDs
(green – over-
laid with the
port number)
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 “LED
Mode Select Button and Indicator LEDs” on the next page for more information.
LED Mode
View (4 green
LEDs)
Link Indicates that the port LEDs are displaying link information:
• if the port LED is on, the port is enabled and receiving a link indication from the
connected device.
• if the port LED is off, the port has no active network cable connected, or is not
receiving link beat or sufficient light. Otherwise, the port may have been disabled
through the switch console or the web browser interface.
• if the port LED is blinking* simultaneously with the Fault LED, the corresponding port
has failed its self test.
Act Indicates the port LEDs are displaying network activity information.
FDx Indicates port LEDs are lit for ports in Full Duplex Mode. Off indicates half duplex.
Spd 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.
* The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.

1-6
Introducing the Switch
Front of the Switch
Introducing the Switch
Table 1-2. EPS/RPS LED Behavior
T/M
(green – ports
21 - 24 or 45-
48)
On For the dual-personality ports, indicates the enabled connector:
• if the “T” is on, the 10/100/1000Base-T RJ-45 connector is enabled.
• if the “M” is on, the mini-GBIC connector is enabled.
Fan Status
(green)
On Normal operation, all fans are ok.
Blinking* One of the unit’s fans has failed. The switch Fault LED will be blinking simultaneously.
RPS Status
(green)
On
Blinking
Off
Normal operation. An HP ProCurve EPS/RPS unit is connected and operating correctly.
The EPS/RPS could be powering the unit - see table below.
The EPS/RPS is connected but may be powering another switch or the EPS/RPS has
experienced a fault.
The EPS/RPS is not connected or is not powered.
* The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
Switch LEDs State Meaning
EPS/RPS
modes:
This table describes the behavior of the EPS/RPS and LEDs associated with EPS/RPS operation (Power,
EPS/RPS, Fault)
Power LEDs EPS/RPS
LED
Fault LED Description
On Off Off Normal operation. EPS/RPS is not connected or not powered
On On Off Normal operation. EPS/RPS is available.
On On/Off Blinking Unit has experienced a fault and another LED will be blinking to
determine fault.
Off On Blinking EPS/RPS is running unit in failover mode. No AC power to the unit, or
the internal power supply has failed
Off Off Off Unit is un-powerd by AC input line and the external EPS/RPS
On Blinking Blinking EPS/RPS unit has experienced a fault
On Blinking Off EPS/RPS unit is unavailable to power the unit in the event of an internal
power supply failure. The external EPS/RPS is designed to provide
power to one of its connected switch devices at a time. The Power
Status LED on the external EPS/RPS unit will also be blinking for this
device.

1-7
Introducing the Switch
Front of the Switch
Introducing the Switch
LED Mode Select Button and Indicator LEDs
To optimize the amount of information displayed for each of the switch ports
without overwhelming you with LEDs, the Switch 2800 Series devices use a
single LED for each port. The operation of this 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.
Power
Fault
hp procurve
switch 2824
J4903A
Console 10/100/1000-T Ports (1
- 20)  Ports are IEEE Auto MDI/MDI-X
20
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps
LED
Mode
1
tatus
Clear
Reset
9
719
Dual-Perso
n
Fan
RP
Test
Lnk
Act
FDx
pd
18
46810 14 16 17 20
57911
12 13 15 19
31 2
21
TM
T
M
Port LED
(one for each port)
LED Mode select button
and indicator LEDs
LED
Mode
Clear
Reset
452
3
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
pd mode: off = 10 Mbps, flash = 100 Mbps, on = 1000 Mbps 10/100/1000Base-T Ports (1 - 4
4
115 17
16 18
Power
Fault
hp procurve
switch 2848
J4904A
123
pd
Lnk
Act
FDx
Test
RP
tatus
Fan
Port LED
(one for each port)
LED Mode select button
and indicator LEDs

1-8
Introducing the Switch
Front of the Switch
Introducing the Switch
■If the Link (LnK) indicator LED is lit, each port LED displays link infor-
mation for the associated port.
If the port LED is in Link mode and it is blinking, the port has failed its
self test. The Fault and Test LEDs will be blinking simultaneously.
■If the Activity (Act) indicator LED is lit, each port LED displays activity
information for the associated port—it flickers as network traffic is
received and transmitted through the port.
■If the Full Duplex (FDx) indicator LED is lit, the port LEDs light for those
ports that are operating in full duplex.
■If the Speed (Spd) indicator LED is lit, the port LEDs behave as follows
to indicate the connection speed for the port:
• Off = 10 Mbps
• Flashing = 100 Mbps (the flashing behavior is a repeated on/off cycle
once every 0.5 sec.)
• On = 1000 Mbps
Reset Button
This button is used to reset the switch while it is powered on. This action clears
any temporary error conditions that may have occurred and executes the
switch self test.
Clear Button
This button is used for these purposes:
■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 for your convenience, but its presence means
that 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, such as a locked wiring closet.
■Restoring Factory Default Configuration - When pressed with the
Reset 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 11 in chapter 4, “Troubleshooting” of this manual.

1-9
Introducing the Switch
Back of the Switch
Introducing the Switch
Back of the Switch
Console Port
This port is used to connect a console to the Switch 2800 Series devices by
using the serial cable supplied with the switch. The console port is located on
the front of the Switch 2824 and on the back of the Switch 2848. This
connection is described under “Connect a Console to the Switch” 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.
Power Connector
The Switch 2800 Series devices do not have a power switch; they are powered
on when connected to an active AC power source. These switches automati-
cally adjust to any voltage between 100--240 volts and either 50 or 60 Hz.
No voltage range settings are required.
HP ProCurve RP Input
Line: 50/60 Hz.
100-127 V~ 0.6A (0,6A)
200-240 V~ 0.3A (0,3A)
HP ProCurve Switch 2824 (HPJ4903A)
Cooling vents - make sure this is not
obstructed for proper switch operation RPS Input AC power connector
HP ProCurve RP Input
Line: 50/60 Hz.
100-127 V~ 0.6A (0,6A)
200-240 V~ 0.3A (0,3A)
Console
HP ProCurve Switch 2848 (HPJ4904A)
Console Port
Cooling vents - make sure this is not
obstructed for proper switch operation
RPS Input
AC power connector

1-10
Introducing the Switch
Switch Features
Introducing the Switch
Switch Features
The features of the Switch 2800 Series devices include:
■24 or 48 auto-sensing 10/100/1000Base-T RJ-45 ports.
■four dual-personality ports—either the auto sensing 10/100/1000Base-T
RJ-45 or the mini-GBIC can be used for each port.
■plug-and-play networking—all ports are enabled—just connect the
network cables to active network devices and your switched network is
operational.
■both switches support an external Redundant Power Supply (RPS).
■IEEE 802.3ab Auto MDI /MDI-X on all 10/100/1000 twisted-pair ports,
meaning that all connections can be made using straight-through
twisted-pair cables. Cross-over cables are not required, although they
will also work. The pin operation of each port is automatically adjusted
for the attached device: if the switch detects that another switch or hub
is connected to the port, it configures the port as MDI; if the switch detects
that an end-node device is connected to the port, it configures the port as
MDI-X.
■automatic learning of the network addresses in each switch’s 8000-
address forwarding table, (with configurable address aging value).
■automatically negotiated full-duplex operation for all 10/100/1000Base-T
RJ-45 ports when connected to other auto-negotiating devices—the mini-
GBIC ports always operate at full duplex.
■easy management of the switch 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.
•HP ProCurve Manager—an SNMP based, graphical network
managent tool you can use to manage your entire network. this
product is included with your new switch.
■support for the Spanning Tree Protocol to eliminate network loops.
■support for up to 60 IEEE 802.1Q-compliant VLANs so you can divide the
attached end nodes into logical groupings that fit your business needs.
■support for many advanced features to enhance network performance—
for a description, see the Management and Configuration Guide, which
is on the Documentation CD-ROM included with the switch.
■download of new switch software for product enhancements or bug fixes.

2-1
Installing the Switch
2
Installing the Switch
The HP ProCurve Switch 2800 Series devices are easy to install. They come
with an accessory kit that includes the brackets for mounting the switch in a
standard 19-inch telco rack, in an equipment cabinet, and with rubber feet that
can be attached so the switch can be securely located on a horizontal surface.
The brackets are designed to allow mounting the switch in a variety of
locations and orientations. This chapter shows how to install the switch.
Included Parts
The Switch 2800 Series devices have the following components shipped with
them:
■HP ProCurve Switch 2800 Series Installation and Getting Started Guide
(J4903-90001), this manual
■HP ProCurve Product Documentation CD ROM
(contains PDF file copies of the documentation for the Switch 2800 Series
devices, including the Management and Configuration Guide, and for
most other HP ProCurve switches)
■HP ProCurve Manager - CD ROM and booklet
■Console cable
■Customer Support/Warranty booklet
■Accessory kits
(5064-5085) for Switch 2824 (5069-5705) for Switch 2848
two mounting brackets two mounting brackets*
four 8-mm M4 screws to attach the
mounting brackets to the switch
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 5/8-inch number 12-24 screws to attach
the switch to a rack
four rubber feet four rubber feet
* These mounting brackets differ from the 5064-5085 mounting brackets by being longer to
support the increased depth of the 2848 product (compared to the 2824).

2-2
Installing the Switch
Included Parts
Installing the Switch
■Power cord, one of the following:
Australia/New Zealand
China
Continental Europe
Denmark
Japan
Switzerland
United Kingdom/Hong Kong/Singapore
United States/Canada/Mexico
8120-6803
8120-8377
8120-6802
8120-6806
8120-6804
8120-6807
8120-8709
8120-6805