No part of this documentation may be reproduced or transmitted in any form or by any means without
prior written consent of Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance, or
use of this material.
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.
A3100-24 v2 SI/A3100-24 v2 EI ·························································································································1
A3100-16 v2 SI/A3100-16 v2 EI ·························································································································2
A3100-8 v2 SI/A3100-8 v2 EI ······························································································································3
A3100-24-PoE v2 EI ················································································································································3
A3100-16-PoE v2 EI ················································································································································4
A3100-8-PoE v2 EI···················································································································································5
Preparing for installation ············································································································································· 7
Safety recommendations ··················································································································································7
Examining the installation site ·········································································································································7
Installing the switch····················································································································································12
Installing the switch························································································································································ 12
Selecting an installation method·························································································································· 12
Installation accessories ·········································································································································13
Installing the switch into the 19-inch rack··········································································································· 15
Mounting the switch on a workbench ················································································································· 20
Grounding the switch ···················································································································································· 21
Grounding cable ··················································································································································· 21
Grounding the switch with a grounding strip····································································································· 21
Grounding the switch with a grounding conductor buried in the earth ground············································· 23
Grounding the switch by using the AC power cord·························································································· 24
Connecting the power cord ·········································································································································· 24
Connecting an AC power cord to the switch····································································································· 25
Connecting the DC power cord··························································································································· 25
Verifying the installation················································································································································ 26
Accessing the switch for the first time·······················································································································27
Setting up the configuration environment···················································································································· 27
Connecting the console cable ······································································································································27
Connection procedure ·········································································································································· 27
Setting terminal parameters ·········································································································································· 28
Powering on the switch·················································································································································· 31
Verification before power-on ·······························································································································31
Powering on the switch········································································································································· 31
Initially configuring the switch ······································································································································ 32
i
Configuring a login authentication method········································································································ 32
Configuring the basic access function ················································································································33
Connecting the switch to the network·······················································································································34
Connecting your switch to the network through twisted pair cables ········································································ 34
Connecting your switch to the network through optical fibers ·················································································· 34
Installing an SFP transceiver module ··················································································································· 35
Connecting an optical fiber connector to an SFP transceiver module····························································· 35
Configuration terminal problems·································································································································· 37
Power supply failure ······················································································································································ 37
Interface failure······························································································································································· 38
PoE system failure ··························································································································································38
Support and other resources ·····································································································································39
Contacting HP ································································································································································ 39
Subscription service ·············································································································································· 39
Related information························································································································································ 39
Appendix A Technical specifications························································································································42
A3100 v2 SI Switch Series technical specifications ·································································································· 42
A3100 v2 EI Switch Series technical specifications ·································································································· 43
Non PoE switches technical specifications········································································································· 43
Appendix B Ports and LEDs·······································································································································47
10/100Base-TX Ethernet port ······························································································································ 47
10/100/1000Base-T Ethernet port ···················································································································· 48
LEDs for the non PoE switches······························································································································ 50
LEDs on the PoE switches······································································································································ 51
Appendix C Ethernet twisted pair cable ··················································································································53
Making an Ethernet twisted pair cable ··············································································································· 56
Index ···········································································································································································57
ii
Product overview
Switch models
Table 1 Switch models in the HP A3100 v2 Switch Series
Sub-series Model Product code Description Alias
HP A3100 v2 SI
Switch Series
HP A3100 v2 EI
Switch Series
Non
PoE
Non
PoE
JG221A HP A3100-8 v2 SI Switch A3100-8 v2 SI
JG222A HP A3100-16 v2 SI Switch A3100-16 v2 SI
JG223A HP A3100-24 v2 SI Switch A3100-24 v2 SI
JD318B HP A3100-8 v2 EI Switch A3100-8 v2 EI
JD319B HP A3100-16 v2 EI Switch A3100-16 v2 EI
JD320B HP A3100-24 v2 EI Switch A3100-24 v2 EI
JD311B HP A3100-8-PoE v2 EI Switch A3100-8-PoE v2 EI
PoE
JD312B HP A3100-16-PoE v2 EI Switch A3100-16-PoE v2 EI
JD313B HP A3100-24-PoE v2 EI Switch A3100-24-PoE v2 EI
Panel views
A3100-24 v2 SI/A3100-24 v2 EI
Front panel
Figure 1 A3100-24 v2 SI/A3100-24 v2 EI front panel
(1) Speed LED for a 10/100Base-TX Ethernet port (2) 10/100Base-TX Ethernet port
(3) Speed LED for a combo interface (4) Console port
(5) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(6) Link/Act LED for a combo interface
(7) Link/Act LED for a 10/100Base-TX Ethernet port (8) Power LED
1
Rear panel
Figure 2 A3100-24 v2 SI/A3100-24 v2 EI rear panel
(1) Grounding screw (2) AC-input power receptacle
A3100-16 v2 SI/A3100-16 v2 EI
Front panel
Figure 3 A3100-16 v2 SI/A3100-16 v2 EI front panel
1
(1) Speed LED for a 10/100Base-TX Ethernet port (2) 10/100Base-TX Ethernet ports
(3) Speed LED for a combo interface (4) Console port
(5) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(6) Link/Act LED for a combo interface (7) Link/Act LED for a 10/100Base-TX Ethernet port
(8) Power LED
2
1
2
3
678
5
4
Rear panel
Figure 4 A3100-16 v2 SI/A3100-16 v2 EI rear panel
(1) Grounding screw (2) AC-input power receptacle
2
A3100-8 v2 SI/A3100-8 v2 EI
Front panel
Figure 5 A3100-8 v2 SI/A3100-8 v2 EI front panel
123
(1) Speed LED for a 10/100Base-TX Ethernet port (2) 10/100Base-TX Ethernet ports
(3) Speed LED for a combo interface (4) Console port
(5) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(6) Link/Act LED for a combo interface (7) Link/Act LED for a 10/100Base-TX Ethernet port
(8) Power LED
Rear panel
Figure 6 A3100-8 v2 SI/A3100-8 v2 EI rear panel
(1) Grounding screw (2) AC-input power receptacle
A3100-24-PoE v2 EI
678
5
4
Front panel
Figure 7 A3100-24-PoE v2 EI front panel
(1) 10/100Base-TX Ethernet port
(2) 10/100Base-TX Ethernet port LEDs (left: yellow, right: green)
(3) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(4) LINK LED for a combo interface (5) Console port
3
Rear panel
Figure 8 A3100-24-PoE v2 EI rear panel
(6) Port LED mode switching (Mode) button (7) Power (PWR) LED
(8) Port mode (A/L) LED (9) Port mode (D/S) LED
(10) ACT LED for a combo interface
(1) 10/100Base-TX Ethernet port (2) 10/100Base-TX Ethernet port LEDs (left: yellow, right: green)
(3) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(4) LINK LED for a combo interface (5) Console port
(6) Port LED mode switching (Mode) button(7) Power (PWR) LED
(8) Port mode (A/L) LED (9) Port mode (D/S) LED
(10) ACT LED for a combo interface
(1) 10/100Base-TX Ethernet port
(2) 10/100Base-TX Ethernet port LEDs (left: yellow, right: green)
(3) Combo interface (10/100/1000Base-T Ethernet port on the left, 100/1000Base-X SFP port on the right)
(4) LINK LED for a combo interface (5) Console port
(6) Port LED mode switching (Mode) button (7) Power (PWR) LED
(8) Port mode (A/L) LED (9) Port mode (D/S) LED
(10) ACT LED for a combo interface
(1) AC-input power receptacle (2) Grounding screw
5
Right side panel
The A3100-8-PoE v2 EI switch has one security lock slot on the right-side panel to prevent theft. You must
purchase a cable lock separately.
Figure 13 A3100-8-PoE v2 EI left side panel
(1) Security lock slot
6
Preparing for installation
Safety recommendations
To avoid any equipment damage or bodily injury caused by improper use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
• Before cleaning the switch, unplug all power cords from the switch. Do not clean the switch with wet
cloth or liquid.
• Do not place the switch near water or in a damp environment. Prevent water or moisture from
entering the switch chassis.
• Make sure that the ground is dry and flat and anti-slip measures are in place.
• Do not place the switch on an unstable case or desk. The switch might be severely damaged in case
of a fall.
• Keep the chassis and installation tools away from walk areas.
• Do not wear loose clothing, jewelry (for example, necklace), or any other objects that could get
caught in the chassis when you install and maintain the switch.
• To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch
is just powered off.
Examining the installation site
The A3100 v2 Switch Series must be used indoors. To ensure normal operation and long service life of
your switch, install it in an environment that meets the requirements described in the following
subsections.
Electricity safety
• Clear the work area of possible hazards, such as ungrounded power extension cables, missing
safety grounds, and wet floors.
• Make sure that the operating voltage is as required.
• Locate the emergency power-off switch in the room before installation. Shut the power off at once in
case accident occurs.
• Unplug all the external cables (including power cords) before moving the chassis.
• Always check that the power has been disconnected.
ESD prevention
To prevent the electronic components from being damaged by the electrostatic discharge (ESD), you
should not only take ESD measures where the switch is located, but also take the following precautions:
• Make sure the switch is well grounded. For how to ground the switch, see “Grounding the switch.”
• Always wear an ESD-preventive wrist strap when installing hot swappable modules.
7
g
To use the ESD-preventive wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to keep good contact with the skin.
3. Attach the ESD-preventive wrist strap to a post on the rack or ground it by using other methods.
Figure 14 Use an ESD-preventive wrist strap
(1) Rack post
Laser safety
The A3100 v2 switches are Class 1 laser devices.
WARNING!
Do not stare into any fiber port when the switch has power. The laser li
may hurt your eyes.
Temperature/humidity
Maintain appropriate temperature and humidity in the equipment room.
• Lasting high relative humidity can cause poor insulation, electricity creepage, mechanical property
change of materials, and metal corrosion.
• Lasting low relative humidity can cause washer contraction and ESD and bring problems including
loose captive screws and circuit failure.
• High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the switch.
ht emitted from the optical fiber
Table 2 Temperature requirements
Temperature Range
Operating temperature 0°C to 45°C (32°F to 113°F)
Storage temperature –40°C to +70°C (–40°F to +158°F)
8
CAUTION:
If condensation appears on the switch when you move it to a high-temperature environment, dry the switch
before powering it on to avoid short circuits.
Table 3 Humidity requirements
Humidity Range
Operating humidity (noncondensing) 10% to 95%
Storage humidity (noncondensing) 5% to 95%
Cleanness
Dust buildup on the chassis may result in electrostatic adsorption, which causes poor contact of metal
components and contact points, especially when indoor relative humidity is low. In the worst case,
electrostatic adsorption can cause communication failure.
Table 4 Dust concentration limit in the equipment room
Substance Concentration limit (particles/cu m)
EMI
Dust particles ≤ 3 x 104 (no visible dust on the tabletop over three days)
NOTE:
Dust diameter ≥ 5 μm
The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table 5.
Table 5 Harmful gas limits in the equipment room
Gas Max. (mg/m
SO2 0.2
H2S 0.006
NH
3
Cl
2
0.05
0.01
3
)
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application
system, adversely affect the switch in a conduction pattern of capacitance coupling, inductance coupling,
electromagnetic wave radiation, or common impedance (including the grounding system) coupling. To
prevent EMI, take the following actions:
• If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to
filter interference from the power grid.
• Keep the switch far away from radio transmitting stations, radar stations, and high-frequency
devices.
• Use electromagnetic shielding, for example, shielded interface cables, when necessary.
9
• Route interface cables only indoors to prevent signal ports from getting damaged by overvoltage or
overcurrent caused by lightning strikes.
Grounding
Using a good grounding system to protect your switch against lightning shocks, interferences, and ESD
is essential to the operating reliability of your switch. Make sure that the resistance between the chassis
and ground is less than 1.5 ohm. For more information about grounding the A3100 v2 Switch Series, see
“Grounding the switch.”
Cooling
The cooling system of the A3100 v2 Switch Series varies by the switch model:
• Non PoE switches (fanless): There are openings on the left, right, and rear of the switch for natural
heat dissipation.
• PoE switches (built-in fans): Fans blow air from the left to the right of the chassis for heat dissipation.
See Figure 15.
Figure 15 Airflow through a PoE switch
For adequate heat dissipation, plan the installation site according to the airflow of your switch, and
adhere to the following requirements:
• Leave a clearance of at least 10 cm (3.94 in) around the air intake and exhaust vents.
• Consider the heat dissipation of the installation site when determining air-conditioning
• Make sure the hot air generated by equipment at the bottom of the rack is not drawn in the intake
• The installation site has a good cooling system.
Space
For adequate ventilation and ease of maintenance, adhere to the following requirements:
• The clearance between the rack and walls or other devices is at least 1 m (3.28 ft).
• The headroom in the equipment room is no less than 3 m (9.84 ft).
(1) Air intake (2) Air exhaust
requirements to ensure that cool air can enter the switch.
of the equipment above.
10
Installation tools
Table 6 Tool list
Category Tool
Measuring and marking tools Long tape, ruler of 1 m (3.28 ft), gradienter, marker, chalk line, and pencil
Drills Percussion drill, electric drill, and several auxiliary drill bits
Fastening tools
Flat-blade screwdriver P4-75 mm
Phillips screwdriver P1-100 mm, P2-150 mm, and P3-250 mm
Socket wrench M5
Socket wrench M6
Small tools
Auxiliary tools
Tools for fiber-optic cleaning Lint-free paper and optical fiber microscope
ESD-preventive wrist strap, hair brush, tweezers, paper knife, hand bellows,
electric iron, solder wire, ladder, cable stripper, vacuum cleaner, crowbar,
rubber hammer, and blower
Multimeter, 500 V Megohmmeter for measuring the insulation resistance,
error detector, optical power meter, and earth resistance tester
NOTE:
Tools and equipment are not supplied with the switch. Prepare them yourself as needed.
11
g
Installing the switch
CAUTION:
Keep the tamper-proof seal on a mountin
chassis, contact the local agent of HP for permission. Otherwise, HP shall not be liable for any
consequence caused thereby.
Figure 16 Hardware installation flow
screw on the chassis cover intact, and if you want to open the
Installing the switch
Selecting an installation method
The A3100 v2 Switch Series supports multiple installation methods. You can select one as needed.
Table 7 A3100 v2 Switch Series installation methods
Switch model Installation methods Installation accessories
• Installing the switch into the
A3100-24 v2 SI
A3100-24 v2 EI
19- i n c h r a c k (Rack mounting by
using front mounting brackets)
• Mounting the switch on a
workbench
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Front mounting bracket. See callout A in
Figure 17 (supplied with the switch).
Rubber pad: See Figure 19 (supplied
with the switch).
Switch model Installation methods Installation accessories
A3100-16 v2 SI
A3100-16 v2 EI
A3100-8 v2 SI
A3100-8 v2 EI
A3100-24-PoE v2 EI
A3100-16-PoE v2 EI
A3100-8-PoE v2 EI
•
Installing the switch into the
19- i n c h r a c k (Rack mounting by
using front mounting brackets)
• Mounting the switch on a
workbench
• Installing the switch into the
19- i n c h r a c k (Rack mounting by
using front mounting brackets)
• Mounting the switch on a
workbench
• Installing the switch into the
19- i n c h r a c k (Rack mounting by
using front and rear mounting
brackets)
• Mounting the switch on a
workbench
• Installing the switch into the
19- i n c h r a c k (Rack mounting by
using front mounting brackets)
• Mounting the switch on a
workbench
Front mounting bracket: HP A3100-16
Rack Mount Kit (JD321A).
See callout C in Figure 17 (optional).
Rubber pad: See Figure 19 (supplied
with the switch).
Front mounting bracket: HP A3100-8
Rack Mount Kit (JD322A).
See callout B in Figure 17 (optional).
Rubber pad: See Figure 19 (supplied
with the switch).
Front mounting bracket. See callout A in
Figure 17 (supplied with the switch).
Rear mounting bracket: See Figure 18
(supplied with the switch).
Rubber pad: See Figure 19 (supplied
with the switch).
Front mounting bracket: HP
A3100-16-PoE and 8-PoE Rack Mount
Kit (JD323A).
See callout D in Figure 17 (optional).
Rubber pad: See Figure 19 (supplied
with the switch).
Installation accessories
Mounting brackets for rack mounting
The A3100 v2 Switch Series provides different mounting brackets for different models. Select them as
required.
13
Figure 17 Front mounting brackets
(1) Screw hole (for M6 screw) for fixing the front mounting bracket to the rack
(2) Screw hole for fixing the front mounting bracket to the switch
(3) M4 screws for fixing the front mounting bracket to the switch
Figure 18 Rear mounting bracket
1
2
(1) Screw hole (for M6 screw) for fixing the rear mounting bracket to the rack
(2) Load-bearing screw (installed to the switch)
14
g
t
g
Rubber pads
Each A3100 v2 switch provides four rubber pads, as shown in Figure 19. Before mounting the switch to
a workbench, attach the four rubber pads to the switch bottom first.
Figure 19 Rubber pad appearance
(1) Rubber pad
Installing the switch into the 19-inch rack
CAUTION:
• Ensure a clearance of 1U (44.45 mm, or 1.75 in) between equipment for heat dissipation.
• For a switch with a depth greater than 300 mm (11.81 in), the front mounting brackets only secure the
switch rather than bear its weight. To mount this switch to a rack, you need to use front mounting
brackets and other accessories. For example, use front mountin
(for more information, see “Rack mounting by using front and rear mounting brackets.”), or use fron
mounting brackets and a rack shelf (if there is a rack shelf on the rack, put the switch on the rack shelf,
move the switch to an appropriate position, and fix the switch by using front mounting brackets.).
Rack mounting by using front mounting brackets
NOTE:
The installation procedures for front mountin
front mounting brackets supplied with the switch as an example.
To install the switch to the rack by using front mounting brackets:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded, check that the rack is sturdy and well grounded.
brackets with different length are similar. The following uses
brackets and rear mounting brackets
2. Unpack the screws (packed with the front mounting brackets), and install the front mounting
brackets to the switch with the screws. See Figure 20.
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