HP 5120 48G, E5500-48-POE, 5120 SI, 5120 EI User Manual

HP 5120 EI & 5120 SI Switch Series
Installation Guide
Part number: 5998-1773
Document version: 6W102-20121111
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Contents

Product overview·························································································································································· 1
5120-24G EI (2 slots)/5120-24G EI TAA (2 slots) panel views ·················································································2 5120-48G EI (2 slots)/5120-48G EI TAA (2 slots) panel views ·················································································3 5120-24G EI panel views················································································································································4 5120-48G EI panel views················································································································································5 5120-24G-PoE+ EI (2 slots)/5120-24G-PoE+ EI TAA (2 slots) panel views······························································6 5120-48G-PoE+ EI (2 slots)/5120-48G-PoE+ EI TAA (2 slots) panel views······························································7 5120-8G SI panel views ··················································································································································8 5120-16G SI panel views ···············································································································································8 5120-24G SI panel views ···············································································································································9 5120-48G SI panel views ···············································································································································9 5120-8G-PPoE+ SI panel views ···································································································································10 5120-8G-PoE+ SI panel views ····································································································································· 10 5120-24G-PPoE+ SI panel views ································································································································· 11 5120-24G-PoE+ SI panel views ··································································································································· 12
Preparing for installation ···········································································································································13
Safety recommendations ··············································································································································· 13 Examining the installation site ······································································································································ 13
Temperature/humidity ·········································································································································· 13 Cleanness······························································································································································· 14 EMI·········································································································································································· 14 Laser safety····························································································································································· 14
Installation tools······························································································································································ 15
Installing the switch····················································································································································16
Installing a 5120 EI switch in a 19-inch rack ············································································································· 17
Mounting brackets················································································································································· 17 Rack-mounting by using only front mounting brackets ······················································································ 18 Rack-mounting by using front mounting brackets and a rack shelf·································································· 20 Rack-mounting by using front and rear mounting brackets··············································································· 21
Installing a 5120 SI switch in a 19-inch rack ············································································································· 24
Mounting brackets and mounting positions········································································································ 25 Attaching the mounting brackets to the switch chassis······················································································ 25
Rack-mounting the switch······································································································································ 28 Mounting the switch on a workbench·························································································································· 30 Mounting the switch to a wall······································································································································· 30
Introduction to wall anchor kit ·····························································································································31
Installation procedure············································································································································ 31 Mounting the switch through magnet mounting·········································································································· 32
Introduction to magnetic mounting kit ················································································································· 32
Installation procedure············································································································································ 33 Grounding the switch ···················································································································································· 34
Grounding the switch with a grounding strip····································································································· 34
Grounding the switch with a grounding conductor buried in the earth ground············································· 36
Grounding the switch by using the AC power cord·························································································· 37 Connecting the power cord ·········································································································································· 38
Connecting the AC power cord··························································································································· 38
Connecting the switch to a +12 VDC output RPS······························································································ 39
Connecting the switch to a –52 to –55 VDC output RPS·················································································· 40
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Installing/removing an interface card (only for the 5120 EI switches) ···································································· 41
Installing an interface card··································································································································· 41
Removing an interface card ································································································································· 42
Installing/removing a dedicated CX4/SFP+ cable ··························································································· 42 Verifying the installation················································································································································ 43
Accessing the switch for the first time·······················································································································44
Setting up the configuration environment ···················································································································· 44 Connecting the console cable ······································································································································ 44
Console cable························································································································································ 44
Connection procedure ·········································································································································· 44 Setting terminal parameters ·········································································································································· 45 Powering on the switch·················································································································································· 48
Verification before power-on ·······························································································································48
Powering on the switch········································································································································· 48
Changing the startup mode·································································································································· 50
Setting up an IRF fabric ·············································································································································53
IRF fabric setup flowchart·············································································································································· 53 Planning IRF fabric setup··············································································································································· 54
Planning IRF fabric size and the installation site································································································ 54
Identifying the master switch and planning IRF member IDs ············································································ 54
Planning IRF topology and connections·············································································································· 55
Identifying physical IRF ports on the member switches ····················································································· 56
Planning the cabling scheme ·······························································································································57 Configuring basic IRF settings······································································································································· 59 Connecting the physical IRF ports ································································································································ 60 Accessing the IRF fabric to verify the configuration ··································································································· 60
Maintenance and troubleshooting····························································································································61
Password loss ································································································································································· 61
Console login password loss ·······························································································································61
Boot ROM password loss ····································································································································· 61 Power supply failure ······················································································································································ 61 Fan failure (only for the 5120 EI switches) ················································································································· 63 Configuration terminal problems·································································································································· 63
Appendix A Technical specifications························································································································64
Physical specifications ··················································································································································· 64
Chassis dimensions and weights ························································································································· 64
Ports and interface card slots ······························································································································· 64 Environmental specifications ········································································································································· 65 Power specifications ······················································································································································ 65
Power input types ·················································································································································· 65
AC input voltage specifications ··························································································································· 66
RPS DC input voltage specifications and RPS compatibility ············································································· 66
Power consumption specifications for non-PoE switches··················································································· 66
Power consumption specifications for PoE switches ·························································································· 67 Cooling system ······························································································································································· 67
Appendix B FRUs and compatibility matrixes··········································································································69
Interface cards (only for the 5120 EI switches) ··········································································································69 SFP/SFP+/XFP transceiver modules and SFP+/CX4 cables (only for the 5120 EI switches)································ 69
GE SFP transceiver modules································································································································· 70
10-GE SFP+ transceiver modules························································································································· 70
SFP+ cables···························································································································································· 71
10-GE XFP transceiver modules ··························································································································· 72
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CX4 cables····························································································································································· 72 SFP transceiver modules and SFP Stacking Kit (only for the 5120 SI switches)······················································ 73
Appendix C Ports and LEDs ······································································································································75
Ports ················································································································································································· 75
Console port··························································································································································· 75
10/100/1000Base-T Ethernet port ···················································································································· 75
SFP port ·································································································································································· 75
Combo interface (only available on the 5120 EI switches)·············································································· 76 LEDs (for the 5120 EI switches) ···································································································································· 76
System status LED··················································································································································· 76
RPS status LED························································································································································ 77
Port mode LED························································································································································ 77
Seven-segment LED················································································································································ 77
10/100/1000Base-T Ethernet port LED············································································································· 79
SFP port LED··························································································································································· 79
Interface card status LED······································································································································· 80 LEDs (for the 5120 SI switches) ···································································································································· 80
Power LED ······························································································································································ 80
RPS status LED························································································································································ 81
Port mode LED························································································································································ 81
10/100/1000Base-T Ethernet port LED············································································································· 81
1000Base-X SFP port LED····································································································································· 83
Support and other resources ·····································································································································84
Contacting HP ································································································································································ 84
Subscription service ·············································································································································· 84 Related information························································································································································ 84
Documents······························································································································································ 84
Websites································································································································································· 84 Conventions ···································································································································································· 85
Index ···········································································································································································87
iii

Product overview

The HP 5120 EI Switch Series includes the models in Table 1, and the HP 5120 SI Switch Series includes the models in Table 2.
Table 1 Models in the
HP 5120 EI Switch Series
Type Product code HP description Alias
JE066A HP 5120-24G EI Switch 5120-24G EI
JE067A HP 5120-48G EI Switch 5120-48G EI
HP 5120-24G EI Switch with 2 Interface Slots
HP 5120-24G EI TAA Switch with 2 Interface Slots
HP 5120-48G EI Switch with 2 Interface Slots
HP 5120-48G EI TAA Switch with 2 Interface Slots
HP 5120-24G-PoE+ EI Switch with 2 Interface Slots
HP 5120-24G-PoE+ EI TAA Switch with 2 Interface Slots
HP 5120-48G-PoE+ EI Switch with 2 Interface Slots
HP 5120-48G-PoE+ EI TAA Switch with 2 Interface Slots
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slot)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
Non-PoE
PoE
JE068A
JG245A
JE069A
JG246A
JG236A
JG247A
JG237A
JG248A
Table 2 Models in the HP 5120 SI Switch Series
Type
Non-PoE
PoE
Product code
JE073A HP 5120-16G SI Switch 5120-16G SI
JE074A HP 5120-24G SI Switch 5120-24G SI
JE072A HP 5120-48G SI Switch 5120-48G SI
JG308A HP 5120-8G SI Switch 5120-8G SI
JG092A HP 5120-24G-PPoE+ SI Switch 5120-24G-PPoE+ SI
JG091A HP 5120-24G-PoE+ SI Switch 5120-24G-PoE+ SI
JG310A HP 5120-8G-PPoE+ SI Switch 5120-8G-PPoE+ SI
JG309A HP 5120-8G-PoE+ SI Switch 5120-8G-PoE+ SI
HP description Alias
1
g
IMPORTANT:
For regulatory identification purposes, the HP 5120-8G SI, HP 5120-8G-PPoE+ SI, and HP 5120-8G-PoE+ SI products are assigned Regulatory Model Numbers (RMN). The Regulatory Model Numbers for these products are listed below. These re
ulatory numbers should not be confused with the
marketing names HP 5120, or product numbers JG308A, JG310A, and JG309A.
Table 3 Regulatory Model Numbers in the HP 5120 8G SI Switch Series
Product code RMN HP description
JG308A BJNGA-AD0006 HP 5120-8G SI Switch
JG310A BJNGA-AD0007 HP 5120-8G-PPoE+ SI Switch
JG309A BJNGA-AD0008 HP 5120-8G-PoE+ SI Switch
This chapter describes the chassis panel views of the 5120 EI and 5120 SI switches.

5120-24G EI (2 slots)/5120-24G EI TAA (2 slots) panel views

Figure 1 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 10/100/1000Base-T Ethernet port LED (3) 1000Base-X SFP port (4) 1000Base-X SFP port LED (5) Console port (6) Seven-segment LED (Unit) (7) Port mode LED (Mode) (8) System status LED (PWR) (9) RPS status LED (RPS) (10) Interface card 1 status LED (MOD1) (11) Interface card 2 status LED (MOD2) (12) Port LED mode switching button
Figure 2 Rear panel
(1) AC-input power receptacle (2) RPS receptacle (shipped with a protective cover)
2
(3) Grounding screw (4) Interface card slot 1 (MOD1) (5) Interface card slot 2 (MOD2)
NOTE:
The 5120-24G EI (2 slots) and 5120-24G EI TAA (2 slots) switches come with the expansion interface card slots covered by filler panels.

5120-48G EI (2 slots)/5120-48G EI TAA (2 slots) panel views

Figure 3 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 10/100/1000Base-T Ethernet port LED (3) Console port (4) Seven-segment LED (Unit) (5) Port mode LED (Mode) (6) System status LED (PWR) (7) RPS status LED (RPS) (8) Interface card 1 status LED (MOD1) (9) Interface card 2 status LED (MOD2) (10) Port LED mode switching button (11) 1000Base-X SFP port (12) 1000Base-X SFP port LED
Figure 4 Rear panel
(1) AC-input power receptacle (2) RPS receptacle (shipped with a protective cover) (3) Grounding screw (4) Interface card slot 1 (MOD1) (5) Interface card slot 2 (MOD2)
NOTE:
The 5120-48G EI (2 slots) and 5120-48G EI TAA (2 slots) switches come with the expansion interface card slots covered by filler panels.
3

5120-24G EI panel views

Figure 5 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port
(3) SFP port (4) SFP port LED (5) Console port (6) Seven-segment LED (Unit) (7) Port mode LED (Mode) (8) System status LED (PWR) (9) RPS status LED (RPS) (10) Port LED mode switching button
(2) 10/100/1000Base-T Ethernet port LED
Figure 6 Rear panel
(1) AC-input power receptacle (2) RPS receptacle (3) Grounding screw (4) “DO NOT REMOVE” label
CAUTION:
The 5120-24G EI switch does not support interface cards.
To ensure good ventilation, do not remove the
interface card slot filler panels.
4

5120-48G EI panel views

Figure 7 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port
(3) Console port (4) Seven-segment LED (Unit) (5) Port mode LED (Mode) (6) System status LED (PWR) (7) RPS status LED (RPS) (8) Port LED mode switching button (9) SFP port (10) SFP port LED
(2) 10/100/1000Base-T Ethernet port LED
Figure 8 Rear panel
(1) AC-input power receptacle (2) RPS receptacle (with filler panel) (3) Grounding screw (4) “DO NOT REMOVE” label
CAUTION:
The 5120-48G EI switch does not support interface cards.
5

5120-24G-PoE+ EI (2 slots)/5120-24G-PoE+ EI TAA (2 slots) panel views

Figure 9 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 10/100/1000Base-T Ethernet port LED (3) 1000Base-X SFP port (4) 1000Base-X SFP port LED (5) Console port (6) Seven-segment LED (Unit) (7) Port mode LED (Mode) (8) System status LED (PWR) (9) RPS status LED (RPS) (10) Interface card 1 status LED (MOD1) (11) Interface card 2 status LED (MOD2) (12) Port LED mode switching button
Figure 10 Rear panel
1 2 3 4 5
(1) RPS receptacle (2) AC-input power receptacle (3) Grounding screw (4) Interface card slot 1 (MOD1) (5) Interface card slot 2 (MOD2)
NOTE:
The 5120-24G-PoE+ EI (2 slots) and 5120-24G-PoE+ EI TAA (2 slots) switches come with the expansion interface card slots covered by filler panels.
6

5120-48G-PoE+ EI (2 slots)/5120-48G-PoE+ EI TAA (2 slots) panel views

Figure 11 Front panel
1 2 3 4 5
101112
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 10/100/1000Base-T Ethernet port LED (3) Console port (4) Seven-segment LED (Unit) (5) Port mode LED (Mode) (6) System status LED (PWR) (7) RPS status LED (RPS) (8) Interface card 1 status LED (MOD1) (9) Interface card 2 status LED (MOD2) (10) Port LED mode switching button (11) 1000Base-X SFP port (12) 1000Base-X SFP port LED
6 7 8 9
Figure 12 Rear panel
(1) RPS receptacle (2) AC-input power receptacle (3) Grounding screw (4) Interface card slot 1 (MOD1) (5) Interface card slot 2 (MOD2)
NOTE:
The 5120-48G-PoE+ EI (2 slots) and 5120-48G-PoE+ EI TAA (2 slots) switches come with the expansion interface card slots covered by filler panels.
7

5120-8G SI panel views

Figure 13 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 1000Base-X SFP port (3) Console port (4) Port LED (5) Power LED (Power)
Figure 14 Rear panel
(1) AC-input power receptacle (2) Grounding screw

5120-16G SI panel views

Figure 15 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 1000Base-X SFP port (3) Console port (4) Port LED (5) Power LED (Power)
Figure 16 Rear panel
(1) AC-input power receptacle (2) Grounding screw
8

5120-24G SI panel views

Figure 17 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 1000Base-X SFP port (3) Console port (4) Port LED (5) Power LED (Power)
Figure 18 Rear panel
(1) AC-input power receptacle (2) Grounding screw

5120-48G SI panel views

Figure 19 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) 10/100/1000Base-T Ethernet port LED (3) Console port (4) Power LED (Power) (5) 1000Base-X SFP port (6) 1000Base-X SFP port LED
Figure 20 Rear panel
(1) AC-input power receptacle (2) Grounding screw
9

5120-8G-PPoE+ SI panel views

Figure 21 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port LED mode switching button (3) Port LED (4) Power LED (Power) (5) Port mode LED (6) Console port (7) 1000Base-X SFP port
Figure 22 Rear panel
(1) AC-input power receptacle (2) Grounding screw

5120-8G-PoE+ SI panel views

Figure 23 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port LED mode switching button (3) Port LED (4) Power LED (Power) (5) Port mode LED (6) Console port (7) 1000Base-X SFP port
10
Figure 24 Rear panel
(1) AC-input power receptacle (2) Grounding screw

5120-24G-PPoE+ SI panel views

Figure 25 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port LED mode switching button (3) Port LED (4) Power LED (Power) (5) Port mode LED (6) Console port (7) 1000Base-X SFP port
Figure 26 Rear panel
(1) AC-input power receptacle (2) Grounding screw
11

5120-24G-PoE+ SI panel views

Figure 27 Front panel
(1) 10/100/1000Base-T auto-sensing Ethernet port (2) Port LED mode switching button (3) RPS status LED (RPS) (4) Port LED (5) Power LED (Power) (6) Port mode LED (7) Console port (8) 1000Base-X SFP port
Figure 28 Rear panel
(1) DC receptacle (2) Screw hole of the plug (3) AC-input power receptacle (4) Grounding screw
12

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. 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.
Do not place the switch on an unstable case or desk. The switch might be severely damaged in case
of a fall.
Ensure proper ventilation of the equipment room and keep the air inlet and outlet vents of the switch
free of obstruction.
Make sure that the operating voltage is in the required range.
To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch
is just powered off.
When replacing FRUs, wear an ESD-preventive wrist strap to avoid damaging the units.

Examining the installation site

The 5120 EI and 5120 SI switches must be used indoors. You can mount your switch in a rack or on a workbench, but make sure:
Adequate clearance is reserved at the air inlet and exhaust vents for ventilation.
The rack or workbench has a good ventilation system.
The rack is sturdy enough to support the switch and its accessories.
The rack or workbench is well earthed.
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.

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.
For the temperature and humidity requirements, see “Appendix A Technical specifications.”
13
g

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/m³)
EMI
Dust
NOTE:
Dust diameter 5 μm
3 x 104 (no visible dust on the tabletop over three days)
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 li
Gas Maximum concentration (mg/m
SO
2
H2S 0.006
NH3 0.05
Cl2 0.01
mits in the equipment room
0.2
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.
Route interface cables only indoors to prevent signal ports from getting damaged by overvoltage or
overcurrent caused by lightning strikes.

Laser safety

The HP 5120 EI and 5120 SI 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.
ht emitted from the optical fiber
14

Installation tools

Flathead screwdriver
Phillips screwdriver
Needle-nose pliers
Wire-stripping pliers
Diagonal pliers
ESD-preventive wrist strap
Blow dryer
All these installation tools are user supplied.
15
g

Installing the switch

CAUTION:
Keep the tamper-proof seal on a mountin chassis, contact your local HP agent for permission. Otherwise, HP caused thereby.
Figure 29 Hardware installation flow
screw on the chassis cover intact, and if you want to open the
shall not be liable for any consequence
16

Installing a 5120 EI switch in a 19-inch rack

You can install a 5120 EI switch in a 19-inch standard rack by using different mounting positions. Table
6 shows the installation methods available for the switches of different depths.
Table 6 Installation methods
Use front
Chassis Depth
mounting brackets only
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G EI
5120-48G EI
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
300 mm (11.81 in)
420 mm (16.54 in)
Yes (see “Rack-mounti
ng by using only front mounting brac
kets
No
Use front mounting brackets and a rack shelf
Yes (see “Rack-mounting by
using front mounting brackets and a rack shelf”)
Yes (see “Rack-mounting by
using front brackets and a rack shelf”)
mounting
Use front and rear mounting brackets
No
Yes (see “Rack-mounting
by using front and rear mounting brac
NOTE:
For a switch with a 420 mm (16.54 in) of depth, the front mounting brackets are not weight-bearing.
kets”)

Mounting brackets

Figure 30 Front mounting bracket
1
(1) Hole for attaching to a rack (by using an M6 screw) (2) Hole for attaching to the switch chassis
2
17
NOTE:
Figure 31 Rear mounting bracket
(1) Hole for attaching to a rack (by using an M6 screw)
The M6 screws for fixing the brackets to a rack are user supplied.
Table 7 shows the mounting bracket shipment for different switch models.
Table 7 Mounting bracket kit shipped with the 5120 EI switches
Chassis Front mounting brackets Rear mounting brackets
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G EI
5120-48G EI
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
One pair N/A
One pair One pair

Rack-mounting by using only front mounting brackets

This installation method is available only for the 5120-24G EI (2 slots), 5120-24G EI TAA (2 slots), 5120-48G EI (2 slots), 5120-48G EI TAA (2 slots), 5120-24G EI, and 5120-48G EI switches.
This task requires two persons.
To mount a switch in a 19-inch standard rack by using only the front mounting brackets:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Check that the rack is well grounded and can support the weight of the switch chassis and all its
accessories.
18
3. Unpack the front mounting brackets and the screws for fixing the brackets to the switch chassis.
4. Align the round holes in one bracket with the holes in the front mounting position of the switch
chassis, and use the screws to fix the mounting bracket to the chassis, as shown in Figure 32.
5. Repeat the previous step to attach the other mounting bracket to the chassis.
Figure 32 Attach the front mounting brackets to the chassis
1
2
3
(1) Front panel of the switch (2) Front mounting bracket (3) Screw
6. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
7. One person holds the switch chassis and aligns the oval holes in the brackets with the mounting
holes in the rack posts, and the other person fixes the mounting brackets with M6 screws (user-supplied) to the rack, as shown in Figure 33.
19
Figure 33 Attach the front mounting brackets to the rack
1
1
2
4
3
(1) Front square-holed post (2) Front panel (3) Screw for fixing the bracket to the square-holed post (4) Front mounting bracket

Rack-mounting by using front mounting brackets and a rack shelf

This installation method is available for all 5120 EI switches.
To mount a switch in a 19-inch rack by using the front mounting brackets and a rack shelf:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Check that the rack is well grounded and can support the weight of the switch chassis and all its
accessories.
3. Fix the rack shelf horizontally in a proper position in the rack.
4. Unpack the front mounting brackets and the screws for fixing the brackets to the switch chassis.
5. Align the round holes in one bracket with the holes in the front mounting position of the switch
chassis, and use the removed screws to fix the mounting bracket to the chassis, as shown in Figure
32.
6. Repeat the previous step to attach the other mounting bracket to the chassis.
7. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
8. Place the switch on the rack shelf, push it into the rack until the brackets touch the rack posts, and
fix the mounting brackets with M6 screws (user-supplied) to the rack, as shown in Figure 33.
20

Rack-mounting by using front and rear mounting brackets

This installation method is available only for the 5120-24G-PoE+ EI (2 slots), 5120-24G-PoE+ EI TAA (2 slots), 5120-48G-PoE+ EI (2 slots), and 5120-48G-PoE+ EI TAA (2 slots) switches.
This task requires two persons. To install the switch in a 19-inch rack by using the front and rear mounting brackets:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Unpack the front mounting brackets and the screws for fixing the brackets to the switch chassis.
3. Align the round holes in one front mounting bracket with the holes in the front mounting position of
the switch chassis, and use the removed screws to fix the mounting bracket to the chassis, as shown in Figure 32.
4. Repeat the previous step to attach the other front mounting bracket to the chassis.
5. Unpack the rear mounting brackets and the load-bearing screws.
6. Fix the load-bearing screws in one of the rear mounting positions (see callout 2 in Figure 34) as
needed.
Figure 34 Attach the
(1) Load-bearing screw (2) Rear mounting positions (3) Front panel (4) Front mounting bracket (5) Screw for fixing the front mounting bracket to the switch
front mounting brackets and load-bearing screws to the chassis
NOTE:
The rear mounting brackets must closely contact with the load-bearing screws to support the chassis weight.
7. Install cage nuts (user-supplied) in the mounting holes in the front and rear rack posts.
8. Fix the rear mounting brackets to the rear posts with M6 screws (user supplied), as shown in Figure
35.
21
Figure 35 Attach the rear mounting brackets to a rack
1
1
2
(1) Rear square-holed post (2) Rear mounting bracket
9. One person supports the chassis bottom with one hand, holds the front part of the chassis with the
other hand, and pushes the chassis into the rack gently.
Make sure that the load-bearing screws closely contact with the upper edges of the rear mounting brackets, as shown in Figure 36.
22
Figure 36 Mount the switch in the rack
(1) Rear panel (2) Rear square-holed post (3) Load-bearing screw (4) Rear mounting bracket
10. The other person aligns the oval holes in the front brackets with the mounting holes in the front rack
posts, and fixes the front mounting brackets with M6 screws (user supplied) to the front rack posts, as shown in Figure 37.
Make su
re that front and rear mounting brackets have securely fixed the switch in the rack.
23
Figure 37 Attach the front brackets to the rack
(1) Load-bearing screw (2) Rear mounting bracket (3) Front panel (4) A screw used to fix the front mounting bracket to the rack (5) Front mounting bracket (6) Front square-holed post

Installing a 5120 SI switch in a 19-inch rack

Figure 38 shows the general procedure for installing a 5120 SI switch in a 19-inch rack.
Figure 38 Install a 5120 SI switch in a 19-inch rack
24

Mounting brackets and mounting positions

Table 8 Mounting brackets for the 5120 SI switches
Chassis Bracket view Mounting position
5120-16G SI
5120-24G SI
5120-8G SI See callout B in Figure 39.
See callout A in Figure 39.
Front mounting (see Figure 40)
Rear mounting (see Figure 41)
Front mounting (see Figure 42)
Rear mounting (see Figure 43)
5120-8G-PoE+ SI
5120-8G-PPoE+ SI
5120-24G-PoE+ SI
5120-24G-PPoE+ SI
5120-48G SI
Figure 39 Mounting brackets
1 2
(A) (B)
See callout D in Figure 39.
See callout C in Figure 39.
1
Front mounting (see Figure 44)
Rear mounting (see Figure 45))
Front mounting (see Figure 46)
Mid-mounting (see Figure 47)
Rear mounting (see Figure 48)
Front mounting (see Figure 46)
Rear mounting (see Figure 48)
2
1
(C)
(1) Holes for attaching to a rack (by using M6 screws) (2) Holes for attaching to the switch chassis
2
1
(D)

Attaching the mounting brackets to the switch chassis

To attach the mounting brackets to the switch chassis:
25
2
1. Identify the correct mounting position (see Table 8).
2. Align the round holes in one bracket with the holes in the mounting position.
3. Use screws to fix the mounting bracket to the chassis.
4. Repeat the preceding steps to attach the other mounting bracket to the chassis.
Figure 40 Front mounting position (5120-16G SI/5120-24G SI)
(1) Front panel
Figure 41 Rear mounting position (5120-16G SI/5120-24G SI)
(1) Front panel
Figure 42 Front mounting position (5120-8G-SI)
1
(1) Front panel
Figure 43 Rear mounting position (5120-8G-SI)
(1) Front panel
26
Figure 44 Front mounting position (5120-8G-PoE+ SI/5120-8G-PPoE+ SI)
1
(1) Front panel
Figure 45 Rear mounting position (5120-8G-PoE+ SI/5120-8G-PPoE+ SI)
(1) Front panel
Figure 46 Front mounting position (5120-24G-PoE+ SI/5120-24G-PPoE+ SI/5120-48G SI)
1
(1) Front panel
Figure 47 Mid-mounting position (5120-24G-PoE+ SI/5120-24G-PPoE+ SI)
(1) Front panel
27
Figure 48 Rear mounting position (5120-24G-PoE+ SI/5120-24G-PPoE+ SI/5120-48G SI)
(1) Front panel

Rack-mounting the switch

This task requires two persons. To mount the switch in a rack:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Check that the rack is well grounded and can support the weight of the switch chassis and all its
accessories.
3. Check that the mounting brackets have been securely attached to the switch chassis.
4. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
5. One person holds the switch chassis and aligns the oval holes in the brackets with the mounting
holes in the rack posts, and the other person fixes the mounting brackets with M6 screws (user-supplied) to the rack, as shown in Figure 49 or
Figure 50.
NOTE:
If a rack shelf is available, you can put the switch on the rack shelf, slide the switch to an appropriate location, and fix the switch to the rack with the mounting brackets.
28
Figure 49 Mount the switch in a rack (5120-16G SI)
1
(1) Front panel (2) Rear panel
Figure 50 Mount the switch in a rack (5120-24G-PoE+ SI/5120-24G-PPoE+ SI)
29
(1) Front panel (2) Rear panel

Mounting the switch on a workbench

This installation method is available for all 5120 EI and 5120 SI switches.
To mount the switch on a workbench:
1. Check that the workbench is sturdy and well grounded.
2. Place the switch with bottom up, and clean the round holes in the chassis bottom with dry cloth.
3. Attach the rubber feet to the four round holes in the chassis bottom.
4. Place the switch with upside up on the workbench.
IMPORTANT:
Ensure good ventilation and 10 cm (3.9 in) of clearance around the chassis for heat dissipation.
Avoid placing heavy objects on the switch.

Mounting the switch to a wall

You can mount the 5120-8G SI, 5120-8G-PoE+ SI, and 5120-8G-PPoE+ SI on concrete or wood walls.
30
Table 9 Models supporting wall mounting
Model Hole distance
5120-8P SI 98.5 mm (3.88 in)
5120-8G-PoE+ SI 174.0 mm (6.85 in)
5120-8G-PPoE+ SI 174.0 mm (6.85 in)

Introduction to wall anchor kit

NOTE:
No wall anchor kit is provided with the 5120 SI Switch Series.
A wall anchor kit comprises an anchor and a screw, as shown in Figure 51. The screw must have an outer diameter of no less than 4 mm (0.16 in) for wall mounting.
Figure 51 Wall anchor kit

Installation procedure

To mount the switch to a wall:
1. Drill two holes at the same height and X mm apart at the locations you marked. See Figure 52.
Figure 52 Hole distance
Xmm
NOTE:
The distance X between holes varies with devices. For specific distances, see Table 9.
ill holes according to the sizes of the anchors and screws so that the anchors can go into the holes
Dr
only the edges remaining outside, and the screws can be tightly fixed on the wall.
31
with
2. Insert an anchor into each hole until the anchor is flush with the wall surface. See Figure 53.
3. Drive a screw into each wall anchor, leaving a gap of at least 1.5 mm (0.06 in) between the base
of the screw head and the wall anchor so that the switch can hang on the screws securely.
Figure 53 Install a wall anchor
4. Align the two installation holes at the switch bottom with the two screws and hang the switch. See
Figure 54.
Figure 54 Wall mounting
(1) Installation hole
CAUTION:
When you mount the switch, keep the Ethernet ports of the switch facing downwards and the two sides with ventilation holes vertical to the ground.

Mounting the switch through magnet mounting

The 5120-8G SI, 5120-8G-PoE+ SI, and 5120-8G-PPoE+ SI support magnet mounting.

Introduction to magnetic mounting kit

A magnetic mounting kit comprises one permanent magnet and one M3*6 countersunk head screw, as shown in Figure 55. F
our magnetic mounting kits are needed for each switch.
32
Figure 55 Magnet mounting kit
(1) M3*6 countersunk head screw (2) Permanent magnet

Installation procedure

To complete magnet mounting:
1. Use a Phillips screwdriver to pass the countersunk head screw through the round hole at the center
of the permanent magnet, fasten it to a blind nut in the dent of the switch bottom, and make sure that the permanent magnet and the switch are fastened reliably. See Figure 56.
NOTE:
Remove the cushion, if any, from the dent before installation.
To ensure the firmness of installation, be sure to use four permanent magnets to secure each switch.
2. Attach the magnet-mounted switch to the specified location. Do not get your fingers stuck between.
Figure 56 Magnet mounting
3
1 2
(1) M3*6 countersunk head screw (2) Permanent magnet (3) Blind nut in the dent of the switch bottom
33
t
y
CAUTION:
Apply magnet mounting to only the 5120-8G SI, 5120-8G-PoE+ SI, and 5120-8G-PPoE+ SI. Otherwise,
a falloff or mis-operation may occur.
Select the installation location carefully. In the case of poor surface, magnet mounting may not be
reliable.
Put the switch at a stable place free from vibrations or shocks. Otherwise, personal injuries or equipmen
damage may occur.
Avoid installing the switch at a high place because bodily
case of a falloff.
Avoid frequently moving the desk-mounted switch because such movements may damage the surface
coating.
To install the device vertically, keep the front panel of the switch facing downwards and the two sides
with ventilation holes vertical to the ground.
Make sure that the weight of external cables does not bring about a falloff, which may result in bodil
injuries or equipment damage.
Keep magnetic cards away from magnets to avoid erasure of any information.
Keep computers and monitors that are easily influenced by magnetic fields away from magnets.
Otherwise, faults may occur to these electronic devices.

Grounding the switch

WARNING!
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.
NOTE:
The power and grounding terminals in this section are for illustration only.
injuries or equipment damage may occur in
The power input end of the switch has a noise filter, whose central ground is directly connected to the chassis to form the chassis ground (commonly known as PGND). You must securely connect this chassis ground to the earth so the faradism and leakage electricity can be safely released to the earth to minimize EMI susceptibility of the switch.
You can ground the switch in one of the following ways, depending on the grounding conditions available at the installation site:
Grounding the switch with a grounding strip
Grounding the switch with a grounding conductor buried in the earth ground
Grounding the switch by using the AC power cord

Grounding the switch with a grounding strip

If a grounding strip is available at the installation site, connect the grounding cable to the grounding strip.
34
g
NOTE:
WARNING!
Connect the
rounding cable to the grounding system in the equipment room. Do not connect it to a fire
main or lightning rod.
The 5120 EI series, 5120-24G-PoE+ SI, and 5120-24G-PPoE+ SI switches come with an OT terminal
for
connecting to a grounding strip. For other switch models, you must prepare OT terminals yourself.
To connect the grounding cable, for example, to a 5120-48G EI (2 slots) switch:
1. Identify the grounding point (with a grounding sign) on the rear panel of the switch chassis, and
remove the grounding screw from the grounding point.
2. Attach the grounding screw to the OT terminal of the grounding cable.
3. Use a screwdriver to fasten the grounding screw into the grounding screw hole.
Figure 57 Connect the grounding cable to the grounding hole of the switch chassis
(1) Grounding sign (2) Grounding hole (3) OT terminal (4) Grounding cable (5) Grounding screw
4. Remove the hex nut of a grounding post on the grounding strip.
5. Cut the grounding cable as appropriate for connecting to the grounding strip.
6. Make the connector for connecting to the grounding strip:
{ If an OT terminal is available, peel 5 mm (0.20 in) of insulation sheath by using a wire stripper,
and insert the bare metal part through the black insulation covering into the end of the OT terminal, secure the metal part of the cable to the OT terminal with a crimper, cover the joint with the insulation covering, and heat the insulation covering with a blow dryer to completely cover the metal part (see callout A in Figure 58).
{ If no OT terminal is available, peel the insulation sheath as appropriate by using a wire stripper,
and bend the bare metal part into a ring (see callout B in Figure 58)
. Attach the OT terminal or the ring to the grounding strip through the grounding post, and fasten it with the removed hex nut, see Figure 59.
35
Figure 58 Make a grounding cable connector
Figure 59 Connect the grounding cable to a grounding strip
(1) Grounding post (2) Grounding strip (3) Grounding cable (4) Hex nut

Grounding the switch with a grounding conductor buried in the earth ground

If the installation site has no grounding strips, but earth ground is available, hammer a 0.5 m (1.64 ft) or longer angle iron or steel tube into the earth ground to serve as a grounding conductor.
The dimensions of the angle iron must be at least 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in). The steel tube must be zinc-coated and its wall thickness must be at least 3.5 mm (0.14 in).
Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion protection.
36
g
t
Figure 60 Ground the switch by burying the grounding conductor into the earth ground
1
6
2 3
4 5
(1) Grounding screw (2) Grounding cable (3) Earth (4) Joint (5) Grounding conductor (6) Chassis rear panel

Grounding the switch by using the AC power cord

If the installation site has no grounding strips or earth ground, you ground an AC-powered switch through the PE wire of the power cord, but must make sure:
The power cord has a PE terminal.
The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
The power cord is securely connected to the power outlet.
NOTE:
round contact in the power outlet is not connected to the ground, report the problem and reconstruc
If the the grounding system.
Figure 61 Ground through the PE wire of the AC power cord
(1) Three-wire AC power cord (2) Chassis rear panel
NOTE:
To guarantee the grounding effect, use the grounding cable provided with the switch to connect to the grounding strip in the equipment room as long as possible.
37

Connecting the power cord

WARNING!
Make sure that the grounding cable has been properly connected before powering on the switch.
Use Table 10 to identify the power cord connection procedures available for your switch.
Table 10 Power cord connection methods at a glance
Chassis Connection procedure
5120-8G SI
5120-16G SI
5120-24G SI
5120-48G SI
5120-8G-PPoE+ SI
5120-8G-PoE+ SI
5120-24G-PPoE+ SI
5120-24G-PoE+ SI

Connecting the AC power cord

AC-input:
Connecting the AC power cord
RPS input:
Connecting the switch to a –52 to –55 VDC output RPS
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G EI
5120-48G EI
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
AC-input:
Connecting the AC power cord
RPS input:
Connecting the switch to a +12 VDC output RPS
AC-input:
Connecting the AC power cord
RPS input:
Connecting the switch to a –52 to –55 VDC output RPS
Connecting the AC power cord
To connect the AC power cord:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Connect one end of the AC power cord to the AC-input power receptacle on the switch.
Figure 62
illustration.
uses a 5120-48G EI switch for illustration, and Figure 63 uses a 5120-24G SI switch for
3. Connect the other end of the AC power cord to the AC power outlet.
38
Figure 62 Connect the AC power cord to the 5120-48G EI switch
Figure 63 Connect the AC power cord to the 5120-24G SI switch

Connecting the switch to a +12 VDC output RPS

This section applies to the 5120-24G EI (2 slots), 5120-24G EI TAA (2 slots), 5120-48G EI (2 slots), 5120-48G EI TAA (2 slots), 5120-24G EI, and 5120-48G EI switches.
To connect these switches to the RPS that provides +12 VDC output:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Loosen the captive screws on the RPS receptacle protective cover and remove the protective cover,
see Figure 64.
If you
do not use the RPS receptacle, install the protective cover.
Figure 64 Remove the RPS receptacle protective cover
3. Unpack the RPS cable shipped with the RPS, identify the plug for connecting to the switch, correctly
orient the plug with the RPS receptacle on the switch chassis, and insert the plug into the receptacle (see callout 1 in Figure 65).
The RPS receptacle is foolproof. If you cannot insert the plug into the receptacle, re-orient the plug rather than use excessive force to push it in.
4. Tighten the screws on the plug with a flat-blade screwdriver to secure the plug in the RPS receptacle
(see callout 2 in Figure 65).
39
5. Connect the other end of the power cord to the RPS.
Figure 65 Connect the RPS cable to the +12 VDC RPS receptacle

Connecting the switch to a –52 to –55 VDC output RPS

This section applies to the 5120-24G-PoE+ EI (2 slots), 5120-24G-PoE+ EI TAA (2 slots), 5120-48G-PoE+ EI (2 slots), 5120-48G-PoE+ EI TAA (2 slots) and 5120-24G-PoE+ SI switches.
To connect these switches to the RPS that provides –52 to –55 VDC output:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Unpack the RPS cable shipped with the RPS, identify the plug for connecting to the switch, correctly
orient the plug with the RPS receptacle on the switch chassis, and insert the plug into the receptacle (see callout 1 in Figure 66).
The RPS receptacle is foolproof. If you cannot insert the plug into the receptacle, re-orient the plug rather than use excessive force to push it in.
3. Tighten the screws on the plug with a flat-blade screwdriver to secure the plug in the RPS receptacle
(see callout 2 in Figure 66).
4. Connect the other end of the power cord to the RPS.
5. Make sure that the RPS is supplying power and verify that the RPS status LED is ON.
Figure 66 Connect the RPS cable to the –52 to –55 RPS receptacle
2
2
1
40

Installing/removing an interface card (only for the 5120 EI switches)

This section applies to all 5120 EI switches but the 5120-24G EI and 5120-48G EI. For the interface cards available for the switches, see “Interface cards (only for the 5120 EI switches).”
This section uses the LSPM2SP2P interface card as an example to describe the procedures of installing and removing an interface card.
IMPORTANT:
To set up a 5120 EI IRF fabric, you must install interface cards. To choose a correct slot for an interface card, see “Planning the cabling scheme for a 5120 EI IRF fabric.”

Installing an interface card

To install an interface card in an interface card slot at the rear of the chassis:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Loosen the mounting screws on the filler panel over the interface card slot with a Phillips
screwdriver and remove the filler panel.
Figure 67 Remove the filler panel over an interface card slot
3. Hold the captive screws on the front panel of the interface card, and gently push the interface card
in along the slot guide rail until the interface card is in close contact with the switch chassis (see callout 1 in Figure 68).
4. Tighten the captive screws with a Phillips screwdriver to fix the interface card in the slot (see callout
2 in Figure 68).
41
g
NOTE:
Figure 68 Install an interface card (II)
2
2
1
Put away the removed filler panel for future use.
When you tighten the captive screws, the torque must not be higher than 0.4 N-m.

Removing an interface card

To remove an interface card:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Use a Phillips screwdriver to completely loosen the captive screws at both sides of the interface
card.
3. Pull the interface card along the guide rails until it completely comes out of the switch chassis.
CAUTION:
Do not touch the surface-mounted components directly with your hands.
Do not use too much force during the operation.
If no new card is to be installed, install the filler panel to prevent dust and ensure
switch.

Installing/removing a dedicated CX4/SFP+ cable

ood ventilation in the
The dedicated CX4 and SFP+ cables for the 5120 EI switches are hot swappable.
Installing a dedicated CX4/SFP+ cable
CAUTION:
The cable bending radius must be at least eight times the cable diameter.
42
To connect a CX4 or SFP+ cable to a port on a CX4/SFP+ interface card:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact is well grounded.
2. Correctly orient one connector of the cable with the port and insert the cable connector into the
port.
Removing a dedicated CX4/SFP+ cable
To remove a CX4 or SFP+ cable from a port on a CX4/SFP+ interface card:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Hold the cable connector and pull the pull latch of the connector to remove the cable from the
switch.

Verifying the installation

After you complete the installation, verify that:
There is enough space for heat dissipation around the switch, and the rack or workbench is stable.
The grounding cable is securely connected.
The correct power source is used.
The power cords are properly connected.
All the interface cables are cabled indoors. If any cable is routed outdoors, verify that the socket
strip with lightning protection and lightning arresters for network ports have been properly connected.
43

Accessing the switch for the first time

Setting up the configuration environment

The first time you access the switch you must use a console cable to connect a console terminal, for example, a PC, to the console port on the switch.
Figure 69 Connect the console port to a terminal

Connecting the console cable

Console cable

A console cable is an 8-core shielded cable, with a crimped RJ-45 connector at one end for connecting to the console port of the switch, and a DB-9 female connector at the other end for connecting to the serial port on the console terminal.
Figure 70 Console cable

Connection procedure

To connect a terminal, for example, a PC, to the switch:
1. Plug the DB-9 female connector of the console cable to the serial port of the PC.
44
2. Connect the RJ-45 connector to the console port of the switch.
NOTE:
Identify the mark on the console port and make sure that you are connecting to the correct port.
The serial ports on PCs do not support hot swapping. If the switch has been powered on, connect the
console cable to the PC before connecting to the switch, and when you disconnect the cable, first disconnect from the switch.

Setting terminal parameters

To configure and manage the switch, you must run a terminal emulator program on the console terminal.
The following are the required terminal settings:
Bits per second—9,600
Data bits—8
Parity—None
Stop bits—1
Flow control—None
Emulation—VT100
To set terminal parameters, for example, on a Windows XP HyperTerminal:
1. Select Start > All Programs > Accessories > Communications > HyperTerminal.
The Connection Description dialog box appears.
2. Enter the name of the new connection in the Name field and click OK.
Figure 71 Connection description
3. Select the serial port to be used from the Connect using list, and click OK.
45
Figure 72 Set the serial port used by the HyperTerminal connection
4. Set Bits per second to 9600, Data bits to 8, Parity to None, Stop bits to 1, and Flow control to None,
and click OK.
Figure 73 Set the serial port parameters
5. Select File > Properties in the HyperTerminal window.
46
Figure 74 HyperTerminal window
6. On the Settings tab, set the emulation to VT100 and click OK.
Figure 75 Set terminal emulation in Switch Properties dialog box
47
g

Powering on the switch

Verification before power-on

Before powering on the switch, verify that:
The power cord is properly connected.
The input power voltage meets the requirement of the switch.
The console cable is properly connected, the terminal or PC used for configuration has started, and
the configuration parameters have been correctly set.

Powering on the switch

Power on the switch, for example, a 5120-24G-PoE+ EI TAA (2 slots) switch, and you can see the following information:
Starting......
******************************************************************************** * * * HP 5120-24G-PoE+ EI TAA Switch with 2 Interface Slots BOOTROM, Version 205 * * * ******************************************************************************** Copyright (c) 2010-2011 Hewlett-Packard Development Company, L.P. Creation date : Feb 23 2011, 09:36:58 CPU Clock Speed : 264MHz BUS Clock Speed : 33MHz Memory Size : 128MB Mac Address : 3ce5a62f8dde
Press Ctrl-B to enter Boot Menu... 1
Press Ctrl + B at the prompt within one second to access the Boot menu, or wait for the system to automatically start up.
NOTE:
The system has two startup modes: full startup and fast startup. By default, the system starts up in fast mode and the waiting time is one second. In full startup mode, the waiting time is five seconds. To chan
e the
startup mode, see “Changing the startup mode.”
If you press Ctrl + B within one second, the system displays a prompt for password:
Password:
Press Enter at the prompt the first time you access the switch and you can see the following Boot menu:
BOOT MENU
1. Download application file to flash
2. Select application file to boot
48
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
6. Enter bootrom upgrade menu
7. Skip current configuration file
8. Set bootrom password recovery
9. Set switch startup mode
0. Reboot
Enter your choice(0-9):
Table 11 Boot menu options
Item Description
1. Download application file to flash Download a system software image file to the Flash memory.
2. Select application file to boot Select the system software image file to boot.
3. Display all files in flash Display all files in the Flash memory.
4. Delete file from flash Delete files from the Flash memory.
5. Modify bootrom password Modify the Boot ROM password.
6. Enter bootrom upgrade menu Access the Boot ROM update menu.
Start the switch with the factory default configuration. This is a
7. Skip current configuration file
one-time operation and does not take effect at the next reboot. You use this option when you forget the console login password.
Disable or enable the Boot ROM password recovery function. By
8. Set bootrom password recovery
default, Boot ROM recovery is enabled. You can disable this function to protect system security.
9. Set switch startup mode
Set the startup mode to full mode or fast mode, as described in “Changing the startup mode.”
0. Reboot Restart the switch.
NOTE:
The system by default has no Boot ROM password. HP recommends that you set a Boot ROM password immediately after you access the Boot menu.
If you perform no operation or press any key other than Ctrl + B within one second, the system
automatically starts up when the remaining time becomes zero, and displays the following information:
Auto-booting...
Decompress Image................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
49
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
...........................................OK!
User interface aux0 is available.
Press ENTER to get started.
Press Enter at the prompt, and you can configure the switch when the prompt <HP> appears.

Changing the startup mode

The system by default starts up in fast mode. To change to the full startup mode, press Ctrl + B within one second to access the Boot menu:
BOOT MENU
1. Download application file to flash
2. Select application file to boot
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
6. Enter bootrom upgrade menu
7. Skip current configuration file
8. Set bootrom password recovery
9. Set switch startup mode
0. Reboot
Enter your choice(0-9):
Enter 9 to change the startup mode.
The current mode is fast startup mode! Are you sure you want to change it to full startup mode? Yes or No(Y/N)
Enter Y at the prompt.
Setting startup mode...done!
BOOT MENU
1. Download application file to flash
2. Select application file to boot
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
6. Enter bootrom upgrade menu
7. Skip current configuration file
50
8. Set bootrom password recovery
9. Set switch startup mode
0. Reboot
Enter your choice(0-9):
Enter 0 at the prompt. The system reboots in full startup mode and displays the following information:
Starting......
******************************************************************************** * * * HP 5120-24G-PoE+ EI TAA Switch with 2 Interface Slots BOOTROM, Version 205 * * * ******************************************************************************** Copyright (c) 2010-2011 Hewlett-Packard Development Company, L.P. Creation date : Feb 23 2011, 09:36:58 CPU Clock Speed : 264MHz BUS Clock Speed : 33MHz Memory Size : 128MB Mac Address : 3ce5a62f8dde
Press Ctrl-B to enter Boot Menu... 5
In full startup mode, you must press Ctrl + B within five seconds to access the Boot menu. If you perform no operation or press any key other than Ctrl + B within five seconds, the system automatically starts up and displays the following information:
Auto-booting...
Decompress Image................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
..............OK!
Board checking.......................LSP1LTSUD
SDRAM fast selftest........................OK!
Flash fast selftest........................OK!
CPLD selftest..............................OK!
Switch chip selftest.......................OK!
PHY selftest...............................OK!
Please check leds....................FINISHED!
51
NOTE:
User interface aux0 is available.
Press ENTER to get started.
Press Enter at the prompt, and you can configure the switch when the prompt <HP> appears.
For more information about the configuration commands and CLI, see the configuration guides and command references for your switch.
52
t

Setting up an IRF fabric

You can use HP Intelligent Resilient Framework (IRF) technology to connect and virtualize 5120 EI switches or 5120 SI switches into a virtual switch called an “IRF fabric” or “IRF virtual device” for flattened network topology, and high availability, scalability, and manageability.
NOTE:
IRF is not available on the 5120-24G EI or 5120-48G EI switch. The “5120
does not include those two switch models.
An IRF fabric cannot have both 5120 EI and 5120 SI switches.

IRF fabric setup flowchart

Figure 76 IRF fabric setup flowchart
Start
Plan IRF fabric setup
Install IRF member switches
Connect grounding cables and
power cords
Power on the switches
EI switches” in this documen
Install interface cards
(only on A5120 EI)
Configure basic IRF settings
Connect the physical IRF ports
Switches elected as slaves reboot and the IRF fabric is
established automaticlly
End
To set up an IRF fabric:
53
g
t
Step Description
Plan the installation site and IRF fabric setup parameters:
Planning IRF fabric size and the installation site
1. Plan IRF fabric setup
Identifying the master switch and planning IRF member IDs
Planning IRF topology and connections
Identifying physical IRF ports on the member switches
Planning the cabling scheme
2. Install IRF member
switches
3. Connect the grounding
cable and power cords
See “Installing the switch.”
See “Grounding the switch” and “Connecting the power cord.”
4. Power on the switches
5. Install interface cards
6. Configure basic IRF
settings
7. Connect the physical IRF
ports
N/A
This step is required only for the 5120 EI switches.
See “Installing/removing an interface car
See “Configuring basic IRF settings.”
See “Connecting the physical IRF ports.”
All switches except the master
is established.
switch automatically reboot, and the IRF fabric
d (only for the 5120 EI switches).”

Planning IRF fabric setup

Planning IRF fabric size and the installation site

Choose switch models and identify the number of required IRF member switches, depending on the user density and upstream bandwidth requirements. The switching capacity of an IRF fabric equals the total switching capacities of all member switches.
NOTE:
As your business grows, you can plu any topology change or replacement.
a switch into an IRF fabric to increase the switching capacity withou

Identifying the master switch and planning IRF member IDs

Determine which switch you want to use as the master for man aging al l member switches in the I RF fabric. An IRF fabric has only one master switch. You configure and manage all member switches in the IRF fabric at the command line interface of the master switch.
NOTE:
IRF member switches will automatically elect a master. You can affect the election result by assigning a high member priority to the intended master switch. For more information about master election, see the IRF configuration guide for your switch.
Prepare an IRF member ID assignment scheme. An IRF fabric uses member IDs to uniquely identify and manage its members, and you must assign each IRF member switch a unique member ID.
54

Planning IRF topology and connections

You can create an IRF fabric in daisy chain topology, or more reliably, ring topology. In ring topology, the failure of one IRF link does not cause the IRF fabric to split as in daisy chain topology. Rather, the IRF fabric changes to a daisy chain topology without interrupting network services.
You connect the IRF member switches through IRF ports. An IRF port is a logical interface for the internal connection between IRF member switches. Each IRF member switch has two IRF ports: IRF-port 1 and IRF-port 2. To use an IRF port, you must bind physical ports to it.
When connecting two neighboring IRF member switches, you must connect the physical ports of IRF-port 1 on one switch to the physical ports of IRF-port 2 on the other switch.
You can bind several physical ports to an IRF port to create an aggregate IRF link for increased bandwidth and availability.
NOTE:
Figure 77 an
d Figure 78 show the topologies of a 5120 EI IRF fabric. Figure 79 and Figure 80 show the
topologies of a 5120-24G SI IRF fabric.
The IRF port connections in these figures are for illustration only, and more connection methods are
available.
Figure 77 5120 EI IRF fabric in daisy chain topology
Master
Slave
Slave
IRF
fabric
Figure 78 5120 EI IRF fabric in ring topology
55
Figure 79 5120 SI IRF fabric in daisy chain topology
Figure 80 5120 SI IRF fabric in ring topology

Identifying physical IRF ports on the member switches

Identify the physical IRF ports on the member switches according to your topology and connection scheme.
Table 12 sho
ws the physical ports that can be used for IRF connection and the port use restrictions.
56
Table 12 Physical IRF port requirements
Switch chassis
5120 EI switches (excluding the 5120-24G EI and the 5120-48G EI)
5120 SI switches All network ports
Candidate physical IRF ports
Ports on the expansion interface cards on the rear panel
Requirements
You must order interface cards separately. For
long-distance connections, use XFP or SFP+ transceiver modules and fibers. For short-distance connections, use CX4 or SFP+ cables. For more information, see “Interface cards (only for the
5
120 EI switches)“ and “SFP/SFP+/XFP
tr
ansceiver modules and SFP+/CX4 cables (only
for the 5120 EI switches).”
Ports assigned to the same IRF port must be on the
same interface card.
All 5120 EI switches in a ring topology and the
non-edge switches in a daisy chain topology must have at least one two-port interface card or two one-port interface cards.
HP recommends that you use Gigabit SFP ports and HP A3600 Switch SFP Stacking Kit cables for IRF connection.
For more information, see “SFP transceiver modules
a
nd SFP Stacking Kit (only for the 5120 SI switches).”

Planning the cabling scheme

Planning the cabling scheme for a 5120 EI IRF fabric
If 2-port interface cards are used and the IRF links are not aggregate, follow these guidelines on connecting two neighboring 5120 EI switches:
You can connect the interface card in slot 1 (MOD 1) on a member switch to the MOD 1 or MOD
2 card on its neighboring switch.
Connect the left port on one interface card to the right port on the other interface card, as shown in
Figure 81.
Figure 81 Use 2-port interface cards to set up singl
e-link IRF connection
57
If 2-port interface cards are used and IRF links are aggregate, follow these guidelines on connecting two neighboring switches:
The ports on the interface card MOD 1 on one switch must connect to the ports on the interface card
MOD 2 on the other switch.
A port on one interface card can connect to any port on the other interface card, as shown in Figure
or example, you can connect the left port on one interface card to the left or right port on the
82. F
other interface card.
Figure 82 Use 2-port interface cards to set up multi-link IRF connection
If 1-port interface cards are used, follow these guidelines on connecting neighboring switches:
If both of the switches use 1-port interface cards, the port on MOD 1 on one switch must connect to
the port on MOD 2 on the other switch (see callout 1 in Figure 83).
If one switch uses a 1-port interface card but the other switch uses a 2-port interface card:
{ If the 1-port interface card is in the MOD 1 slot, the port on the card must connect to the right
port on the 2-port interface card (see callout 2 in Figure 83.)
{ If the 1-port interface card is in the MOD 2 slot, the port on the card must connect to the left port
on the 2-port interface card.
Figure 83 Cable connections for an IRF fabric with 1-port interface cards
58
Planning the cabling scheme for a 5120 SI IRF fabric
HP recommends that you use Gigabit SFP ports and HP A3600 Switch SFP Stacking Kit cables for IRF connection.
Figure 84
Stacking Kit cables for IRF connection. All these schemes use a ring topology.
Figure 85 sh
Figure 84 Connect the IRF member switches
shows two IRF connection schemes and uses Gigabit SFP ports and HP A3600 Switch SFP
ows the IRF fabric topology.
Figure 85 IRF fabric topology
1 2
34

Configuring basic IRF settings

After you install the IRF member switches, power on the switches, and log in to each IRF member switch (see the fundamentals configuration guide for your switch) to configure their member IDs, member priorities, and IRF port bindings.
Follow these guidelines when you configure the neighboring switches:
Assign the master switch higher member priority than any other switch.
Bind physical ports to IRF port 1 on one switch and to IRF port 2 on the other switch.
59
Execute the irf-port-configuration active command to activate the IRF port configuration.
Execute the display irf configuration command to verify the basic IRF settings.
For more information about configuring basic IRF settings, see the IRF configuration guide for your switch.

Connecting the physical IRF ports

Connect the IRF member switches as planned.
NOTE:
Wear an ESD-preventive wrist strap when you connect the physical IRF ports. For how to connect them,
Pluggable SFP/SFP+/XFP Transceiver Modules Installation Guide
see
.

Accessing the IRF fabric to verify the configuration

To verify the basic functionality of the IRF fabric after you finish configuring basic IRF settings and connecting IRF ports:
1. Log in to the IRF fabric through the console port of any member switch.
2. Create a Layer 3 interface, assign it an IP address, and make sure that the IRF fabric and the
remote network management station can reach each other.
3. Use Telnet, web or SNMP to access the IRF fabric from the network management station.
See the fundamentals configuration guide for your switch.
4. Check that you can manage all member switches as if they were one node.
5. Display the running status of the IRF fabric by using the commands in Table 13.
Table 13 Display and maintain IRF configuration and running status
To do … Use the command…
Display information about the IRF fabric display irf
Display all members’ configurations that take effect after switch reboots
Display topology information about the IRF fabric
display irf configuration
display irf topology
NOTE:
To avoid IP address collision and network problems, configure at least one multi-active detection (MAD) mechanism to detect the presence of multiple identical IRF fabrics and handle collisions. For more information about MAD detection, see the IRF configuration guide for your switch.
60

Maintenance and troubleshooting

Password loss

Console login password loss

If you forget the console login password, access the Boot menu:
BOOT MENU
1. Download application file to flash
2. Select application file to boot
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
6. Enter bootrom upgrade menu
7. Skip current configuration file
8. Set bootrom password recovery
9. Set switch startup mode
0. Reboot
Enter your choice(0-9):
Enter 7 and restart the switch. The switch reboots with empty configuration, and you can log in through the console port without entering the password to check the configuration file for the user password.

Boot ROM password loss

Contact the HP technical support for help.

Power supply failure

The 5120 EI switches and the 5120 SI switches use fixed power supplies. All 5120 EI switches and the 5120-24G-PoE+ SI switch support three power input modes: AC input, RPS DC input, and concurrent AC and RPS DC inputs. All other 5120 SI switches have only one AC power input.
To identify a power failure:
On any 5120 EI switch, look at the system status LED and the RPS status LED of the switch. For more
information, see “LEDs (for the 5120 EI switches).”
On the 5120-24G-PoE+ SI switch, look at the power LED and the RPS status LED of the switch. For
more information, see “LEDs (for the 5120 SI switches).”
On any other 5120 SI switch, look at the power LED of the switch. For more information, see “LEDs
or the 5120 SI switches).”
(f
61
NOTE:
In the following subsections, the system status LED collectively refers to both the system status LED on a 5120 EI switch and the power LED on a 5120 SI switch.

AC input

If the system status LED is off, an AC input failure has occurred. Verify the following items:
The AC power cord is securely connected to the switch, and the AC-input power receptacle on the
The external AC power system is correctly working.
The operating temperature of the switch is in the normal range, and the power module has good

RPS DC input

If the system status LED or RPS status LED is off, an RPS input failure has occurred. Verify the following items:
The switch is securely connected to the RPS.
The RPS is correctly working.
switch and the connected AC power outlet are in good condition.
ventilation. Over-temperature can cause the power mo dule to sto p work ing and enter the protection state.
The operating temperature of the switch is in the normal range, and the power supply has good
ventilation. Over-temperature can cause the power supply to stop working and enter the protection state).

Concurrent RPS and AC inputs

1. If the system status LED is off, the AC power supply and the RPS both have an input failure.
Verify the following items:
{ The AC power cord is securely connected to the switch, and the AC-input power receptacle on
the switch and the connected AC power outlet are in good condition.
{ The external AC power system is correctly working.
{ The switch is securely connected to the RPS.
{ The RPS is correctly working.
{ The operating temperature of the switch is in the normal range, and the power supply has good
ventilation. Over-temperature can cause the power supply to stop working and enter the protection state.
2. If the system status LED is on but the RPS status LED is steady yellow, an AC input failure has
occurred.
Verify the following items:
{ The AC power cord is securely connected to the switch, and the AC-input power receptacle on
the switch and the connected AC power outlet are in good condition.
{ The external AC power system is correctly working.
3. If the system status LED is on but the RPS status LED is off, an RPS input failure has occurred.
Verify the following items:
{ The switch is securely connected to the RPS.
{ The RPS is correctly working.
62
NOTE:
If the problem persists, contact the HP technical support for help.

Fan failure (only for the 5120 EI switches)

You can look at the system status LED and the seven-segment LED of a 5120 EI switch to identify a fan failure. If both LEDs are behaving as described in Table 14, a f
Table 14 LED behaviors that identify a fan failure
LED Mark State
System status LED PWR Steady red
The LED flashes F for fan failure.
Seven-segment LED Unit
The 5120 EI switches use fixed fans. If a fan failure occurs, contact the HP technical support for help and do not attempt to fix the problem yourself.
an failure occurs.

Configuration terminal problems

If the configuration environment setup is correct, the configuration terminal displays booting information when the switch is powered on. If the setup is incorrect, the configuration terminal would display nothing or garbled text.

No terminal display

If the configuration terminal displays nothing after the switch is powered on, verify the following items:
The power supply is supplying power to the switch.
The console cable is properly connected.
The console cable has no problem and the terminal settings are correct.

Garbled terminal display

If terminal display is garbled, verify that the following settings are configured for the terminal, for example, HyperTerminal:
Baud rate—9,600
Data bits—8
Parity—none
Stop bits—1
Flow control—none
Emulation—VT100
63

Appendix A Technical specifications

Physical specifications

Chassis dimensions and weights

Chassis Dimensions (H × W × D) Weight
5120-24G EI
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G EI
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-8G SI
5120-16G SI
5120-24G SI
5120-8G-PPoE+ SI
5120-8G-PoE+ SI
5120-24G-PPoE+ SI
5120-24G-PoE+ SI
43.6 × 440 × 300 mm (1.72 × 17.32 × 11.81 in)
43.6 × 440 × 420 mm (1.72 × 17.32 × 16.54 in)
43.6 × 440 × 300 mm (1.72 × 17.32 × 11.81 in)
43.6 × 440 × 420 mm (1.72 × 17.32 × 16.54 in)
43.6 × 210 × 210 mm (1.72 × 8.27 × 8.27 in)
43.6 × 440 × 160 mm (1.72 × 17.32 × 6.30 in)
43.6 × 300 × 260 mm (1.72 × 11.81 × 10.24 in)
43.6 × 440 × 420 mm (1.72 × 17.32 × 16.54 in)
< 4.5 kg (9.92 lb)
< 7.0 kg (15.43 lb)
< 5 kg (11.02 lb)
< 7.5 kg (16.53 lb)
2 kg (4.41 lb)
3 kg (6.61 lb)
3 kg (6.61 lb)
7 kg (15.43 lb)
5120-48G SI
43.6 × 440 × 260 mm (1.72 × 17.32 × 10.24 in)

Ports and interface card slots

Chassis
5120-24G EI 1 24 4 N/A
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G EI 1 48 4 N/A
Console ports
1 24 4 2
1 24, PoE+ 4 2
10/100/1000Base-T auto-sensing Ethernet ports
64
5 kg (11.02 lb)
1000Base-X SFP ports
Interafce card slots
Chassis
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-8G SI 1 8 1 N/A
5120-16G SI 1 16 4 N/A
5120-24G SI 1 24 4 N/A
5120-8G-PoE+ SI 1 8, PoE+ 1 N/A
5120-8G-PPoE+ SI 1 8, PPoE+ 1 N/A
5120-24G-PoE+ SI 1 24, PoE+ 4 N/A
5120-24G-PPoE+ SI 1 24, PPoE+ 4 N/A
5120-48G SI 1 48 4 N/A
Console ports
1 48 4 2
1 48, PoE+ 4 2
10/100/1000Base-T auto-sensing Ethernet ports
1000Base-X SFP ports
NOTE:
Interafce card slots
On a 5120 EI switch, the last four 10/100/1000Base-T Ethernet ports and the four SFP ports are copper/fiber combo ports in pairs, as shown in Table 17. They form four combo interfaces. When o port in a pair is activated, the other port automatically shuts down.

Environmental specifications

Chassis Operating temperature Relative humidity
All chassis 0°C to 45°C (32°F to 113°F) 10% to 90%, noncondensing

Power specifications

Power input types

Chassis AC-input power receptacle RPS receptacle
All 5120 EI chassis, 5120-24G-PoE+ SI
All 5120 SI chassis but the 5120-24G-PoE+ SI
1 1
1 N/A
ne
The RPS can supply power to your switch when the AC power line fails or cannot supply sufficient power.
65

AC input voltage specifications

Chassis Rated voltage range Max voltage range
All chassis
100 VAC to 240 VAC, 50 Hz or 60 Hz
90 VAC to 264 VAC, 47 Hz to 63 Hz

RPS DC input voltage specifications and RPS compatibility

Chassis
5120-24G EI
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-24G-PoE+ SI –52 VDC to –55 VDC A-RPS1600 (JG136A)
RPS input rated voltage range
10.8 VDC to 13.2 VDC A-RPS800 (JD183A)
–52 VDC to –55 VDC A-RPS1600 (JG136A)
Compatible RPS

Power consumption specifications for non-PoE switches

Chassis
5120-24G EI 35 W 62 W
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI 54 W 110 W
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-8G SI 8.7 W 14.4 W
5120-16G SI 11.9 W 25.1 W
5120-24G SI 13.4 W 31.5 W
5120-48G SI 25.7 W 59.8 W
Minimum power consumption
36 W 103 W
55 W 145 W
Maximum power consumption
66

Power consumption specifications for PoE switches

Chassis
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-8G-PoE+ SI 30 W 180 W 19 W 230 W
5120-8G-PPoE+ SI 30 W 65 W 10 W 95 W
5120-24G-PoE+ SI 30 W
Maximum PoE power per port
30 W 370 W 62 W
30 W
Total PoE output
370 W at AC input
740 W at RPS DC input (370 W for ports 1 to 24, and 370 W for ports 25 to
48)
370 W at AC input
740 W at RPS DC input
Minimum power consumption
90 W
45.6 W at AC input
27.5 W at RPS DC input
Maximum power consumption (including total PoE output)
585 W at AC input
491 W at RPS DC input
651 W at AC input
921 W at RPS DC input
528 W at AC input
832 W at RPS DC input
5120-24G-PPoE+ SI 30 W 170 W 25.0 W 255 W

Cooling system

All 5120 EI and 5120 SI switches use fixed fans for heat dissipation, and the airflow is from left to right.
Chassis Fixed fans
5120-24G EI
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-48G EI
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-8G SI
5120-16G SI
5120-24G SI
5120-48G SI
4
6
1
67
Chassis Fixed fans
5120-8G-PPoE+ SI 1
5120-8G-PoE+ SI 3
5120-24G-PPoE+ SI 3
5120-24G-PoE+ SI 6
68

Appendix B FRUs and compatibility matrixes

This appendix describes the FRUs available for the 5120 EI and 5120 SI switches and their compatibility.

Interface cards (only for the 5120 EI switches)

The interface cards in this section are available for all 5120 EI switches but the 5120-24G EI and 5120-48G EI switches.
Card model
LSPM2GP2P JD367A
LSPM2SP2P JD368B
LSPM1XP2P JD359B
LSPM1XP1P JD361B
LSPM1CX2P JD360B
Product code
Description Support for IRF
Provides two Gbps SFP fiber ports
Provides two 10 Gbps SFP+ fiber ports
Provides two 10 Gbps XFP fiber ports
Provides one 10 Gbps XFP fiber port
Provides two 10 Gbps copper ports
No
Yes
Yes
Yes
Yes See CX4 cables.”
Compatible transceiver modules/cables
See “GE SFP transceiver
modules.”
NOTE:
The
card does not support the transceiver module coded JD089B.
See “10-GE SFP+ transceiver
modules” and
See “10-GE XFP transceiver
modules.”
See “10-GE XFP transceiver
modules.”
NOTE:
For more information about the interface cards, see the user guides for the interface cards.
SFP+ cables.”

SFP/SFP+/XFP transceiver modules and SFP+/CX4 cables (only for the 5120 EI switches)

NOTE:
To guarantee the functionality of the SFP/SFP+/XFP ports, use only HP transceiver modules.
The transceiver modules available for this switch series are subject to change over time. For the most
up-to-date list of transceiver modules, consult your HP sales representative or technical support engineer.
For the transceiver module specifications, see HP A-Series Switches Transceiver Modules User Guide.
For information about installing a transceiver module, see
Modules Installation Guide
.
69
Pluggable SFP/SFP+/XFP Transceiver

GE SFP transceiver modules

Product code
JD118B
JD119B
JD061A
Module description
HP X120 1G SFP LC SX Transceiver
HP X120 1G SFP LC LX Transceiver
HP X125 1G SFP LC LH40 1310nm Transceiver
Central wavelength
(nm)
850
1310
1310 9/125 N/A
Cable/fiber diameter (μm)
50/125
62.5/125
9/125 N/A
50/125 500, 400
62.5/125 500
Multimode fiber modal bandwidth (MHz × km)
500
400
200
160
Max transmission distance
550 m (1804.46 ft)
500 m (1640.42 ft)
275 m (902.23 ft)
220 m (721.78 ft)
10 km (6.21 miles)
550 m (1804.46 ft)
550 m (1804.46 ft)
40 km (24.86 miles)
JD062A
JD063B
JD103A
JD098B
JD099B
JD089B
IMPORTANT:
HP X120 1G SFP LC LH40 1550nm Transceiver
HP X125 1G SFP LC LH70 Transceiver
HP X120 1G SFP LC LH100 Transceiver
HP X120 1G SFP LC BX 10-U Transceiver
HP X120 1G SFP LC BX 10-D Transceiver
HP X120 1G SFP RJ45 T Transceiver
1550 9/125 N/A
1550 9/125 N/A
1550 9/125 N/A
TX: 1310nm
RX: 1490nm
TX: 1490nm
RX: 1310nm
N/A
You must use the transceiver modules coded JD098B and JD099B in pairs.

10-GE SFP+ transceiver modules

Central wavelength
(nm)
Product code
Module description
9/125 N/A
9/125 N/A
Category-5 twisted pair
Fiber diameter (μm)
Multimode fiber modal bandwidth (MHz × km)
N/A
40 km (24.86 miles)
70 km (43.50 miles)
100 km (62.14 miles)
10 km (6.21 miles)
10 km (6.21 miles)
100 m (328.08 ft)
Max transmission distance
JD092B
HP X130 10G SFP+ LC SR
850 50/125
70
2000
300 m (984.25 ft)
Product code
JD093B
JD094B
JG234A
Module description
HP X130 10G SFP+ LC LRM Transceiver
HP X130 10G SFP+ LC LR Transceiver
HP X130 10G SFP+ LC ER 40km Transceiver
Central wavelength
(nm)
1310
1310 9/125 N/A
1550 9/125 N/A
Fiber diameter (μm)
62.5/125
50/125
62.5/125 200, 160
Multimode fiber modal bandwidth (MHz × km)
500 82 m (269.03 ft)
400 66 m (216.54 ft)
200 33 m (108.27 ft)
160 26 m (85.3 ft.)
1500, 500
400
Max transmission distance
220 m (721.78 ft)
100 m (328.08 ft)
220 m (721.78 ft)
10 km (6.21 miles)
40 km (24.86 miles)
NOTE:
For the SFP+ cables available for connecting the SFP+ ports, see “SFP+ cables.”

SFP+ cables

Product code Cable description Cable length
JD095C HP X240 10G SFP+ SFP+ 0.65m DA Cable 0.65 m (2.13 ft)
JD096C HP X240 10G SFP+ SFP+ 1.2m DA Cable 1.2 m (3.94 ft)
JD097C HP X240 10G SFP+ SFP+ 3m DA Cable 3 m (9.84 ft)
JG081C HP X240 10G SFP+ SFP+ 5m DA Cable 5 m (16.40 ft)
Figure 86 SFP+ cable
(1) Pull latch (2) Connector
71

10-GE XFP transceiver modules

Product code
JD117B
JD108B
JD121A
JD107A
Module description
HP X130 10G XFP LC SR Transceiver
HP X130 10G XFP LC LR 1310nm Transceiver
HP X135 10G XFP LC ER Transceiver
HP X130 10G XFP LC ZR 1550nm Transceiver
Central wavelength
(nm)
850
1310 9/125 N/A 10 km (6.21 miles)
1550 9/125 N/A 40 km (24.86 miles)
1550 9/125 N/A 80 km (49.71 miles)
Fiber diameter (μm)
50/125
62.5/125
Multimode fiber modal bandwidth
Max transmission distance
(MHz × km)
2000 300 m (984.25 ft)
500 82 m(269.03 ft)
400 66 m(216.54 ft)
220 33 m (108.27 ft)
160 26 m (85.3 ft)

CX4 cables

Product code Cable description Connector type Cable length
JD363B
JD364B
JD365A HP X230 CX4 to CX4 3m Cable 4X Infiniband 3 m (118.11 in)
Figure 87 CX4 cable
(1) Pull latch (2) Connector
HP X230 Local Connect 50cm CX4 Cable
HP X230 Local Connect 100cm CX4 Cable
4X Infiniband 0.5 m (19.69 in)
4X Infiniband 1 m (39.37 in)
72
g
t

SFP transceiver modules and SFP Stacking Kit (only for the 5120 SI switches)

NOTE:
To guarantee the functionality of the SFP ports, use only HP SFP transceiver modules.
The SFP transceiver modules available for this switch series are subject to chan
e over time. For the mos up-to-date list of SFP transceiver modules, consult your HP sales representative or technical support engineer.
For the SFP transceiver module specifications, see
Guide
Product code
JD118B
JD119B
.
Module description
HP X120 1G SFP LC SX Transceiver
HP X120 1G SFP LC LX Transceiver
Central wavelength
(nm)
850
1310
HP A-Series Switches Transceiver Modules User
Cable/fiber diameter (μm)
50/125
62.5/125
9/125 N/A
50/125 500, 400
Multimode fiber modal bandwidth (MHz × km)
500
400
200
160
Maximum transmission distance
550 m (1804.46 ft)
500 m (1640.42 ft)
275 m (902.23 ft)
220 m (721.78 ft)
10 km (6.21 miles)
550 m (1804.46 ft)
JD061A
JD062A
JD063B
JD098B
JD099B
JD089B
JD324A
HP X125 1G SFP LC LH40 1310nm Transceiver
HP X120 1G SFP LC LH40 1550nm Transceiver
HP X125 1G SFP LC LH70 Transceiver
HP X120 1G SFP LC BX 10-U Transceiver
HP X120 1G SFP LC BX 10-D Transceiver
HP X120 1G SFP RJ45 T Transceiver
HP A3600 Switch SFP Stacking Kit
62.5/125 500
1310 9/125 N/A
1550 9/125 N/A
1550 9/125 N/A
TX: 1310nm
RX: 1490nm
TX: 1490nm
RX: 1310nm
N/A
N/A UTP/STP N/A 1.5 m (4.92 ft)
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9/125 N/A
9/125 N/A
Category-5 twisted pair
N/A
550 m (1804.46 ft)
40 km (24.86 miles)
40 km (24.86 miles)
70 km (43.50 miles)
10 km (6.21 miles)
10 km (6.21 miles)
100 m (328.08 ft)
IMPORTANT:
You must use the transceiver modules coded JD098B and JD099B in pairs.
74

Appendix C Ports and LEDs

Ports

Console port

Every 5120 EI or 5120 SI switch provides one console port on the front panel.
Table 15 Console port specifications
Item Specification
Connector type
Compliant standard
Transmission baud rate 9600 bps (default) to 115200 bps
Service
RJ-45
EIA/TIA-232
Provides connection to an ASCII terminal.
Provides connection to the serial port of a local or remote
(through a pair of modems) PC running terminal emulation program.

10/100/1000Base-T Ethernet port

Table 16 10/100/1000Base-T Ethernet port specifications
Item Specification
Connector type
Interface standard
Max transmission distance
RJ-45
10 Mbps, half/full duplex
100 Mbps, half/full duplex
1000 Mbps, full duplex
MDI/MDI-X, auto-sensing
100 m (328.08 ft)
Transmission medium
Standards

SFP port

All 5120 EI and 5120 SI switches have 1000Base-X SFP ports. For the SFP transceiver modules available for the 5120 EI switches, see “GE SFP transceiver modules. the 5120 SI switches, see “SFP transceiver modules and SFP Stacking Kit (only for the 5120 SI switches).”
Category-5 (or above) twisted pair cable
IEEE 802.3i, 802.3u, 802.3ab
” For the SFP transceiver modules available for
75

Combo interface (only available on the 5120 EI switches)

On a 5120 EI switch, the last four 10/100/1000Base-T Ethernet ports and the four SFP ports are copper/fiber combo ports in pairs, as shown in Table 17. port in a pair is activated, the other port automatically shuts down. For more information about combo interfaces, see HP 5120 EI Switch Series Configuration Guides.
Table 17 Copper/fiber combo ports in pairs
Chassis SFP port 10/100/1000Base-T Ethernet port
They form four combo interfaces. When one
5120-24G EI (2 slots)
5120-24G EI TAA (2 slots)
5120-24G-PoE+ EI (2 slots)
5120-24G-PoE+ EI TAA (2 slots)
5120-24G EI
5120-48G EI (2 slots)
5120-48G EI TAA (2 slots)
5120-48G-PoE+ EI (2 slots)
5120-48G-PoE+ EI TAA (2 slots)
5120-48G EI
GigabitEthernet 1/0/25 GigabitEthernet 1/0/22
GigabitEthernet 1/0/26 GigabitEthernet 1/0/24
GigabitEthernet 1/0/27 GigabitEthernet 1/0/21
GigabitEthernet 1/0/28 GigabitEthernet 1/0/23
GigabitEthernet 1/0/49 GigabitEthernet 1/0/46
GigabitEthernet 1/0/50 GigabitEthernet 1/0/48
GigabitEthernet 1/0/51 GigabitEthernet 1/0/45
GigabitEthernet 1/0/52 GigabitEthernet 1/0/47

LEDs (for the 5120 EI switches)

Table 18 LEDs at a glance
LED Availability
System status LED Entire series
RPS status LED Entire series
Port mode LED Entire series
Seven-segment LED Entire series
10/100/1000Base-T Ethernet port LED Entire series
SFP port LED Entire series
Interface card status LED Entire series (except the 5120-24G EI and 5120-48G EI)

System status LED

The system status LED shows the operating status of the switch.
Table 19 System status LED description
LED mark Status Description
Steady green The switch is operating properly. PWR
Flashing green (1 Hz)
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The switch is performing power-on self test (POST).
LED mark Status Description

RPS status LED

The RPS status LED shows the operating status of the RPS DC input.
Table 20 RPS status LED description for the non-PoE switches
LED mark Status Description
Steady red POST has failed.
Flashing yellow (1 Hz) Some ports have failed to pass POST.
Off The switch is powered off.
RPS
Table 21 RPS status LED description for the PoE switches
LED mark Status Description
RPS

Port mode LED

The port mode LED indicates the type of information that the network port LEDs are showing. You can use the port LED mode switching button to change the type of displayed port information.
Table 22 Port mode LED description
Steady green
Steady yellow
Off No RPS is connected.
Steady green Both the RPS DC input and the AC input are normal.
Steady yellow
Off The RPS power input is abnormal or no RPS is connected.
Both the RPS DC input and the AC input are normal, or an RPS is connected and the AC input is normal.
The RPS DC input is normal, but the AC input is disconnected or has failed.
The RPS power input is normal, but the AC input is disconnected or has failed.
LED mark Status Description
Steady green The network port LEDs are showing port rates.
Mode
Flashing green (1 Hz) (available only for the PoE switches)
Steady yellow
The network port LEDs are showing the status of PoE power supply on the ports.
The network port LEDs are showing duplex modes.

Seven-segment LED

The seven-segment LED, together with the system status LED, shows detailed system operating information (see Table 23).
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%
%
%
%
0
The seven-segment LED can also show the total PoE output power as a percentage of the maximum PoE output power that a PoE switch can supply (see Table 24)
. The PoE switches include 5120-24G-PoE+ EI (2
slots), 5120-24G-PoE+ EI TAA (2 slots), 5120-48G-PoE+ EI (2 slots), and 5120-48G-PoE+ EI TAA (2 slots).
Table 23 Seven-segment LED description (I)
System status LED (PWR) status
Flashing green
Flashing red
Flashing green
Steady red
Steady red
Seven-segment LED (Unit) status Description
The LED displays numbers one by one.
The LED displays flashing numbers.
A bar rotates clockwise around the LED.
The LED displays a flashing F character.
The LED displays a flashing t character.
The LED displays a capital C character.
POST is running, and the LED displays the ongoing test item ID.
POST has failed, and the LED flashes the ID of the failed test item.
Software is loading.
The switch is experiencing a fan failure.
The switch is in an over-temperature condition.
The switch is the command switch in a cluster.
The LED displays an S character.
Steady green
The LED displays a lowercase c character.
The LED displays a number.
Table 24 Seven-segment LED description (II)
Port mode LED (Mode) status
Flashing green (1 Hz) (PoE mode)
System status LED (PWR) status
Steady green
Seven-segment LED (Unit) status
The LED displays different signs.
The switch is a member switch in a cluster.
The switch is a candidate switch for a cluster.
The member ID of the switch in an IRF fabric.
The 5120-24G EI and 5120-48G EI switches do not support IRF.
Description
For example, the sign indicates that
81 -10 61 -80
the switch is outputting 0 to 20% of the
41 -60 21 -40
maximum PoE output power.
0 -20
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10/100/1000Base-T Ethernet port LED

Each 10/100/1000Base-T auto-sensing Ethernet port has a status LED to show port operating status and activities. The port mode LED indicates the type of information (for example, port rate or duplex mode) that the port LEDs are showing. You can use the port LED mode switching button to change the type of displayed port information.
Table 25 10/100/1000Base-T auto-sensing Ethernet port LEDs description
Port mode LED (Mode) status
Steady green (rate mode)
Flashing green (1 Hz) (PoE mode, available only for PoE switches)
Port LED status Description
The port is operating at 1000 Mbps. The port LED
Steady green
Steady yellow
Flashing yellow (3 Hz) POST has failed on the port.
Off No link is present on the port.
Steady green PoE power supply is normal.
Flashing green (1 Hz)
Steady yellow
Flashing yellow (3 Hz) POST has failed on the port.
Off The port is not supplying PoE power.
fast flashes when the port is sending or receiving data.
The port is operating at 10/100 Mbps. The port LED fast flashes when the port is sending or receiving data.
The device attached to the port requires power higher than the maximum or currently available PoE output power on the port.
The port is experiencing a PoE failure.
The port is not supplying power, because the device attached to the port is not a powered device.
Steady yellow (duplex mode)

SFP port LED

Each 1000Base-X SFP port has a status LED to show port operating status and activities. The port mode LED indicates the type of information (for example, port rate or duplex mode) that the port LEDs are showing. You can use the port LED mode switching button to change the type of displayed port information.
The port is operating in full duplex mode. The port
Steady green
Steady yellow
Flashing yellow (3 Hz) POST has failed on the port.
Off No link is present on the port.
79
LED fast flashes when the port is sending or receiving data.
The port is operating in half duplex mode. The port LED fast flashes when the port is sending or receiving data.
Table 26 SFP port LEDs description
Port mode LED (Mode) status Port LED status Description
Steady green Steady green (rate mode) or flashing green (1 Hz, PoE mode)
Steady yellow (duplex mode)
Flashing yellow (3 Hz) POST has failed on the port.
Off No link is present on the port.
Steady green
Flashing yellow (3 Hz) POST has failed on the port.
Off No link is present on the port.

Interface card status LED

Table 27 Interface card status LED description
The port is operating at 1000 Mbps. The port LED fast flashes when the port is sending or receiving data.
The port is operating in full duplex mode. The port LED fast flashes when the port is sending or receiving data.
LED mark Status Description
Green The interface card is in position and operating properly.
MOD1
MOD2
Flashing yellow
Off The expansion interface card slot is empty.
The switch does not support the interface card model, or the interface card has failed.

LEDs (for the 5120 SI switches)

Table 28 LEDs at a glance
LED Availability
Power LED Entire series
RPS status LED 5120-24G-PoE+ SI
Port mode LED
10/100/1000Base-T Ethernet port LED Entire series
1000Base-X SFP port LED Entire series
5120-8G-PPoE+ SI, 5120-8G-PoE+ SI, 5120-24G-PPoE+ SI, 5120-24G-PoE+ SI

Power LED

The power LED shows the operation status of the switch.
Table 29 Power LED description
LED mark Status Description
Power
Steady green The switch is operating properly.
80
LED mark Status Description

RPS status LED

The 5120-24G-PoE+ SI switch has one RPS status LED on its front panel to show the operating status of the RPS DC input.
Table 30 RPS status LED description
LED mark Status Description
RPS

Port mode LED

The 5120-8G-PPoE+ SI, 5120-8G-PoE+ SI, 5120-24G-PPoE+ SI and 5120-24G-PoE+ SI switches have a port mode LED to indicate the type of information that the network port LEDs (excluding the SFP port LEDs) are showing. You can use the port LED mode switching button to change the type of displayed port information.
Flashing green (1 Hz)
Flashing green (3 Hz) POST has failed or another fatal error has been detected.
Off The switch has been powered off.
Steady green The RPS DC input is normal.
Off The RPS unit is not connected or the RPS DC input is abnormal.
The system is performing power-on self test (POST) or downloading software.
Table 31 Port mode LED description
LED mark Status Description
Steady green The network port LEDs are showing port rates.
Mode
Flashing green (1 Hz)
The network port LEDs are showing the status of PoE power supply on the ports.

10/100/1000Base-T Ethernet port LED

The 5120-48G SI switch has one bi-color LED (see Table 32) for each 10/100/1000Base-T Ethernet port, and all other 5120 SI switches have two LEDs (see Table 33) f The 5120-8G-PPoE+ SI, 5120-24G-PoE+ SI, 5120-24G-PPoE+ SI, and 5120-24G-PoE+ SI switches also use a port mode LED to indicate the type of information that the port LEDs are displaying (see Table 34).
Table 32 Ethernet port
LED description (5120-48G SI)
Status Description
Steady green The port is operating at 1000 Mbps.
Fast flashing green The port is sending or receiving data at 1000 Mbps.
Steady yellow The port is operating at 10/100 Mbps.
or each 10/100/1000Base-T Ethernet port.
Fast flashing yellow The port is sending or receiving data at 10/100 Mbps.
81
Status Description
Off No link is present on the port.
Table 33 Ethernet port LEDs description (5120-16G SI/5120-24G SI)
LED Status Description
On The port is operating at 1000 Mbps.
The port is sending or receiving data at 1000 Mbps.
The port has no link or is not operating at 1000 Mbps.
Green
Fast flashing
Off
On The port is operating at 10/100 Mbps.
The port is sending or receiving data at 10/100 Mbps.
The port has no link or is not operating at 10/100 Mbps.
Yellow
Fast flashing
Off
Table 34 Ethernet port LED description (5120-24G-PPoE+ SI/5120-24G-PoE+ SI)
Port mode LED (Mode) status
Steady green (rate mode)
Port LED Port LED status Description
On The port is operating at 1000 Mbps.
The port is sending or receiving data at 1000 Mbps.
The port has no link or is not operating at 1000 Mbps.
Green
Fast flashing
Off
On The port is operating at 10/100 Mbps.
Flashing green (PoE mode)
Yellow
Green
Yellow
Fast flashing
The port is sending or receiving data at 10/100 Mbps.
Off No link is present on the port.
On PoE power supply is normal.
The device attached to the port requires power
Flashing at 3 Hz
higher than the maximum or currently available PoE output power on the port.
Off The port is not supplying power.
On
Off
The device attached to the port is not a powered device or a PoE failure has occurred.
The port is supplying power normally or not supplying power.
82

1000Base-X SFP port LED

Table 35 1000Base-X SFP port LEDs description
Status Description
Steady green The port is operating at 1000 Mbps.
Flashing green The port is sending or receiving data.
Off No link is present on the port.
83

Support and other resources

Contacting HP

For worldwide technical support information, see the HP support website:
http://www.hp.com/support
Before contacting HP, collect the following information:
Product model names and numbers
Technical support registration number (if applicable)
Product serial numbers
Error messages
Operating system type and revision level
Detailed questions

Subscription service

HP recommends that you register your product at the Subscriber's Choice for Business website:
http://www.hp.com/go/wwalerts
After registering, you will receive email notification of product enhancements, new driver versions, firmware updates, and other product resources.

Related information

Documents

To find related documents, browse to the Manuals page of the HP Business Support Center website:
http://www.hp.com/support/manuals
For related documentation, navigate to the Networking section, and select a networking category.
For a complete list of acronyms and their definitions, see HP A-Series Acronyms.

Websites

HP.com http://www.hp.com
HP Networking http://www.hp.com/go/networking
HP manuals http://www.hp.com/support/manuals
HP download drivers and software http://www.hp.com/support/downloads
HP software depot http://www.software.hp.com
HP Education http://www.hp.com/learn
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