HPE JH390A User manual

HPE FlexFabric 5940 Switch Series
Installation Guide
Part number: 5200-2842b
Document version: 6W105-20171215

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i
Contents
Preparing for installation ····································································1
Safety recommendations ·············································································································2
Examining the installation site·······································································································2
Temperature/humidity ··········································································································2
Cleanliness ························································································································3
EMI ··································································································································3
Laser safety ·······················································································································4
Installation tools·························································································································4
Installation accessories ···············································································································4
Installing the switch ··········································································7
Installing the switch in a 19-inch rack ·····························································································8
Installation accessories·········································································································8
Rack-mounting procedures at a glance ·················································································· 10
Attaching the mounting brackets, chassis rails, and grounding cable to the chassis ························· 11
Attaching the slide rails to the rack ························································································ 16
Mounting the switch in the rack ···························································································· 17
Grounding the switch ················································································································ 21
Grounding the switch with a grounding strip ············································································ 21
Grounding the switch by using the AC power cord ···································································· 22
Installing/removing a fan tray ······································································································ 23
Installing a fan tray ············································································································ 23
Removing a fan tray··········································································································· 25
Installing/removing a power supply ······························································································ 26
Installing a power supply····································································································· 26
Removing a power supply ··································································································· 27
Connecting the power cord ········································································································ 29
Connecting an AC power cord······························································································ 29
Connecting a DC power cord ······························································································· 29
Installing/removing an interface module ························································································ 30
Installing an interface module······························································································· 30
Removing an interface module ····························································································· 32
Verifying the installation············································································································· 32
Accessing the switch for the first time ················································· 33
Setting up the configuration environment ······················································································ 33
Connecting the console cable ····································································································· 33
Serial console cable··········································································································· 33
USB mini console cable ······································································································ 34
Connection procedure ········································································································ 34
Setting terminal parameters ······································································································· 36
Powering on the switch ············································································································· 36
Setting up an IRF fabric ···································································38
IRF fabric setup flowchart ·········································································································· 38
Planning IRF fabric setup··········································································································· 39
Planning IRF fabric size and the installation site······································································· 39
Identifying the master switch and planning IRF member IDs ······················································· 39
Planning IRF topology and connections·················································································· 40
Identifying physical IRF ports on the member switches ······························································ 41
Planning the cabling scheme ······························································································· 41
Configuring basic IRF settings ···································································································· 42
Connecting the physical IRF ports ······························································································· 42
Accessing the IRF fabric to verify the configuration ········································································· 43
Maintenance and troubleshooting ······················································44
Power supply failure ················································································································· 44

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Fan tray failure ························································································································ 44
Configuration terminal problems·································································································· 45
No display on the configuration terminal ················································································· 45
Garbled display on the configuration terminal ·········································································· 45
Appendix A Chassis views and technical specifications ··························46
Chassis views ························································································································· 46
HPE 5940 32QSFP+·········································································································· 46
HPE 5940 48SFP+ 6QSFP+································································································ 47
HPE 5940 48XGT 6QSFP+ ································································································· 48
HPE 5940 48SFP+ 6QSFP28 ······························································································ 49
HPE 5940 48XGT 6QSFP28································································································ 50
HPE FlexFabric 5940 2-slot ································································································· 51
HPE FlexFabric 5940 4-slot ································································································· 52
Technical specifications············································································································· 54
Appendix B FRUs and compatibility matrixes ······································· 58
Power supplies ························································································································ 59
Fan trays································································································································ 60
Interface modules ···················································································································· 61
Appendix C Ports and LEDs ····························································· 64
Ports ····································································································································· 64
Console port····················································································································· 64
Management Ethernet port ·································································································· 64
USB port ························································································································· 65
SFP+ port ························································································································ 66
QSFP+ port······················································································································ 68
QSFP28 port ···················································································································· 71
1/10GBASE-T autosensing Ethernet port················································································ 74
LEDs····································································································································· 74
System status LED ············································································································ 74
SFP+ port LED ················································································································· 74
QSFP+ port LED ··············································································································· 75
QSFP28 port LED ············································································································· 75
Management Ethernet port LEDs·························································································· 76
1/10GBASE-T autosensing Ethernet port LEDs ······································································· 76
Fan tray alarm LEDs ·········································································································· 77
Appendix D Cooling system······························································78
Document conventions and icons ······················································79
Conventions ··························································································································· 79
Network topology icons ············································································································· 80
Support and other resources ···························································· 81
Accessing Hewlett Packard Enterprise Support ·············································································· 81
Accessing updates ··················································································································· 81
Websites ························································································································· 82
Customer self repair··········································································································· 82
Remote support ················································································································ 82
Documentation feedback ···································································································· 83
Index ···························································································84

1
Preparing for installation
Table 1 describes HPE FlexFabric 5940 Switch Series models, power supplies, and fan trays.
Table 1 HPE FlexFabric 5940 Switch Series models, power supplies, and fan trays
Product code HPE description Alias
HPE FlexFabric 5940 switches
JH390A HPE FlexFabric 5940 48SFP+ 6QSFP28 Switch HPE 5940 48SFP+ 6QSFP28
JH391A HPE FlexFabric 5940 48XGT 6QSFP28 Switch HPE 5940 48XGT 6QSFP28
JH394A HPE FlexFabric 5940 48XGT 6QSFP+ Switch HPE 5940 48XGT 6QSFP+
JH395A HPE FlexFabric 5940 48SFP+ 6QSFP+ Switch HPE 5940 48SFP+ 6QSFP+
JH396A HPE FlexFabric 5940 32QSFP+ Switch HPE 5940 32QSFP+
JH397A HPE FlexFabric 5940 2-slot Switch HPE 5940 2-slot
JH398A HPE FlexFabric 5940 4-slot Switch HPE 5940 4-slot
Power supplies
JC680A HPE 58x0AF 650W AC Power Supply 650W AC
JH336A HPE FlexFabric Switch 650W 48V Hot Plug
NEBS-compliant DC Power Supply 650W DC
JG900A HPE A58x0AF 300W AC Power Supply 300W AC
JG901A HPE A58x0AF 300W DC Power Supply 300W DC
Fan trays
JC682A HPE 58x0AF Back (Power Side) to Front (Port
Side) Airflow Fan Tray LSWM1FANSC
JC683A HPE 58x0AF Front (Port Side) to Back (Power
Side) Airflow Fan Tray LSWM1FANSCB
JG552A HPE X711 Front (Port Side) to Back (Power Side)
Airflow High Volume Fan Tray LSWM1HFANSCB
JG553A HPE X712 Back (Power Side) to Front (Port Side)
Airflow High Volume Fan Tray LSWM1HFANSC
JH185A HPE 5930 4-slot Back (Power Side) to Front (Port
Side) Airflow Fan Tray LSWM1BFANSC
JH186A HPE 5930 4-slot Front (Port Side) to Back (Power
Side) Airflow Fan Tray LSWM1BFANSCB
For regulatory identification purposes, the HPE FlexFabric 5940 Switches are assigned Regulatory
Model Numbers (RMNs). The RMNs for these products are listed below.
Product code RMN Description
JH390A BJNGA-AD0068 HPE FlexFabric 5940 48SFP+ 6QSFP28 Switch
JH391A BJNGA-AD0069 HPE FlexFabric 5940 48XGT 6QSFP28 Switch
JH394A BJNGA-AD0061 HPE FlexFabric 5940 48XGT 6QSFP+ Switch
JH395A BJNGA-AD0060HPE FlexFabric 5940 48SFP+ 6QSFP+ Switch

2
Product code RMN Description
JH396A BJNGA-AD0022 HPE FlexFabric 5940 32QSFP+ Switch
JH397A BJNGA-AD0049 HPE FlexFabric 5940 2-slot Switch
JH398A BJNGA-AD0050 HPE FlexFabric 5940 4-slot Switch
Safety recommendations
To avoid any equipment damage or bodily injury caused by incorrect use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
•Before cleaning the switch, remove all power cords from the switch. Do not clean the switch
with wet cloth or liquid.
•Do not place the switch near water or in a damp environment. Prevent water or moisture from
entering the switch chassis.
•Do not place the switch on an unstable case or desk. The switch might be severely damaged in
case of a fall.
•Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the
switch free of obstruction.
•Connect the yellow-green protection grounding cable before power-on.
•Make sure 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, including power supplies, interface modules, and fan trays, wear an
ESD wrist strap to avoid damaging the units.
Examining the installation site
The HPE FlexFabric 5940 switches must be used indoors.
Mount your switch in a rack and verify the following items:
•Adequate clearance is reserved at the air inlet and outlet vents for ventilation.
•The rack has a good ventilation system.
•Identify the hot aisle and cold aisle at the installation site, and make sure ambient air flows into
the switch from the cold aisle and exhausts to the hot aisle.
•Identify the airflow designs of neighboring devices, and prevent hot air flowing out of the bottom
device from entering the top device.
•The rack is sturdy enough to support the switch and its accessories.
•The rack is reliably grounded.
To ensure correct 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 leakage, mechanical
property change of materials, and metal corrosion.

3
•Lasting low relative humidity can cause washer contraction and ESD and cause problems
including loose 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 of different switch models, see "Appendix A Chassis
views and technical specifications."
Cleanliness
Dust buildup on the chassis might 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 2 Dust concentration limit in the equipment room
Substance Concentration limit (particles/m³)
Dust ≤3 x 104 (no visible dust on the tabletop over three days)
NOTE:
Dust diameter ≥5 μm
The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion
and premature aging of components, as shown in Tab l e 3 .
Table 3 Harmful gas limits in the equipment room
Gas Maximum concentration (mg/m3)
SO20.2
H2S 0.006
NH30.05
Cl20.01
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application
system, adversely affect the switch in the following ways:
•A conduction pattern of capacitance coupling.
•Inductance coupling.
•Electromagnetic wave radiation.
•Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•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.
•To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning
strikes, route interface cables only indoors.

4
Laser safety
WARNING!
Do not stare into any fiber port when the switch has power. The laser light emitted from the optical
fiber might hurt your eyes.
The HPE FlexFabric 5940 switches are Class 1 laser devices.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself:
•Phillips screwdriver.
•ESD wrist strap.
•Marker.
Installation accessories
Table 4 Installation accessories
Product
code Description Quantity Applicable models
5066-0850
1 U mounting bracket kit (including one
pair of mounting brackets and eight M4
countersunk screws)
1 kit All HPE FlexFabric 5940
switches
5190-0719
Mounting brackets for the HPE 5940
2-slot switch
1 kit HPE 5940 2-slot
5190-0720
Mounting brackets for the HPE 5940
4-slot switch
1 kit HPE 5940 4-slot

5
Product
code Description Quantity Applicable models
5185-8681
1U short slide rail kit (including one pair
of slide rails and four M4 countersunk
screws)
1 kit
•HPE 5940 32QSFP+
•HPE 5940 48XGT
6QSFP28
•HPE 5940 48XGT
6QSFP+
5185-8684
2U short slide rail kit (including one pair
of slide rails and four M4 countersunk
screws)
1 kit •HPE 5940 4-slot
5185-8713
1 U long slide rail kit (including one pair
of slide rails and four M4 countersunk
screws)
1 kit
•HPE 5940 48SFP+
6QSFP28
•HPE 5940 48SFP+
6QSFP+
5184-6723
Grounding cable
1 All HPE FlexFabric 5940
switches
5185-9579
Grounding screw
2 All HPE FlexFabric 5940
switches
5003-2403
Interface module filler module
1
•HPE 5940 2-slot
•HPE 5940 4-slot
5190-1773
Power supply filler panel
1 All HPE FlexFabric 5940
switches
5185-8688
5400-0249
DC power cord
The power cord color code scheme is for
illustration only. The cable delivered for
your country or region might use a
different color scheme.
1 650W DC power supply


6
Product
code Description Quantity Applicable models
5185-8748
Removable cable tie
1 All power supplies
5185-8627
Console cable
1 All HPE FlexFabric 5940
switches
5187-9022
QSFP+ dust plug
As required HPE 5940 32QSFP+


7
Installing the switch
CAUTION:
Keep the tamper-proof seal on a mounting screw on the chassis cover intact, and if you want to open
the chassis, contact Hewlett Packard Enterprise for permission. Otherwise, Hewlett Packard
Enterprise shall not be liable for any consequence caused thereby.
Figure 1 Hardware installation flow

8
Installing the switch in a 19-inch rack
IMPORTANT:
To install an HPE FlexFabric 5940 switch (except HPE 5940 48SFP+ 6QSFP+ and HPE 5940
48SFP+ 6QSFP28 switches) in a 19-inch rack, make sure the rack depth is a minimum of 1000 mm
(39.37 in) so that the rack door can be closed easily.
Installation accessories
Table 5 Installation accessories
Switch model Mounting
brackets
(provided)
Cable
management
brackets
Rack mounting rail kit
(provided)
•HPE 5940 32QSFP+
•HPE 5940 48XGT 6QSFP+
•HPE 5940 48XGT
6QSFP28
1U high, one pair.
See Figure 2. N/A
1U high, including one pair of
chassis rails and one pair of slide
rails. See Figure 5.
•HPE 5940 48SFP+
6QSFP+
•HPE 5940 48SFP+
6QSFP28
1U high, one pair.
See Figure 2. N/A
1U high, including one pair of
chassis rails and one pair of long
slide rails. See Figure 7.
HPE 5940 2-slot 1U high, one pair.
See Figure 3. N/A
1U high, including one pair of
chassis rails and one pair of slide
rails. See Figure 5.
HPE 5940 4-slot 2U high, one pair.
See Figure 4.
One pair
(provided).
See Figure 4.
2U high, including one pair of
chassis rails and one pair of slide
rails. See Figure 6.
Figure 2 Mounting brackets

9
Figure 3 Mounting brackets for the HPE 5940 2-slot switch
Figure 4 Mounting brackets for the HPE 5940 4-slot Switch
(1) Cable management bracket (2) Mounting bracket
Figure 5 1U chassis rail and short slide rail
(1) Chassis rail (2) Slide rail
1 2

10
Figure 6 2U chassis rail and short slide rail
(1) Chassis rail (2) Slide rail
Figure 7 1U chassis rail and long slide rail
(1) Chassis rail (2) Long slide rail
Rack-mounting procedures at a glance
Figure 8 Rack-mounting procedure
NOTE:
If a rack shelf is available, you can put the switch on the rack shelf, slide the switch to an appropriate
location, and attach the switch to the rack with the mounting brackets.
•Follow these guidelines when you install the switch in a 19-inch rack:
•The distance between the front and rear posts of the rack must meet the requirements
described in Table 6.
•Tosecure the switch to the rack, you must install not only mounting brackets, but also chassis
rails and slide rails.

11
Table 6 Distance requirements between the front and rear rack posts
Switch
model Installation method
Minimum distance
between the front and rear
rack posts
Maximum distance
between the front and
rear rack posts
HPE 5940
32QSFP+
Using mounting
brackets and short
slide rails (provided)
405 mm (15.94 in) 834 mm (32.83 in)
HPE 5940
48SFP+
6QSFP+
Using mounting
brackets and long
slide rails (provided)
621 mm (24.45 in) 854 mm (33.62 in)
Using mounting
brackets and short
slide rails (optional)
401 mm (15.79 in) 634 mm (24.96 in)
HPE 5940
48XGT
6QSFP+
Using mounting
brackets and short
slide rails (provided)
405 mm (15.94 in) 834 mm (32.83 in)
HPE 5940
48SFP+
6QSFP28
Using mounting
brackets and long
slide rails (provided)
621 mm (24.45 in) 854 mm (33.62 in)
Using mounting
brackets and short
slide rails (optional)
401 mm (15.79 in) 634 mm (24.96 in)
HPE 5940
48XGT
6QSFP28
Using mounting
brackets and short
slide rails (provided)
405 mm (15.94 in) 834 mm (32.83 in)
HPE 5940
2-slot
Using mounting
brackets and slide
rails (provided)
520 mm (20.47 in) 769 mm (30.28 in)
HPE 5940
4-slot
Using mounting
brackets and slide
rails (provided)
518 mm (20.39 in) 858 mm (33.78 in)
Attaching the mounting brackets, chassis rails, and
grounding cable to the chassis
The switch has one mounting position near the network ports and one mounting position near the
power supplies for mounting brackets.
The HPE 5940 48SFP+ 6QSFP28, HPE 5940 48XGT 6QSFP28, HPE 5940 48XGT 6QSFP+, HPE
5940 48SFP+ 6QSFP+,HPE 5940 4-slot, and HPE 5940 32QSFP+ switches provide three
grounding points: primary grounding point (with a grounding sign), auxiliary grounding point 1, and
auxiliary grounding point 2. The HPE 5940 2-slot switch provides two grounding points: primary
grounding point (with a grounding sign) and auxiliary grounding point 1.
The mounting brackets and chassis rails installation procedures are the same for All HPE FlexFabric
5940 switches.

12
Figure 9 Mounting and grounding positions on the HPE 5940 32QSFP+ switch
(1) Auxiliary grounding point 2 (2) Power supply-side mounting position
(3) Primary grounding point (4) Auxiliary grounding point 1
(5) Network port-side mounting position
Figure 10 Mounting and grounding positions on the HPE 5940 48SFP+ 6QSFP+ switch
(1) Auxiliary grounding point 2 (2) Power supply-side mounting position
(3) Primary grounding point (4) Auxiliary grounding point 1
(5) Network port-side mounting position

13
Figure 11 Mounting and grounding positions on the 5940 2-slot switch
(1) Power supply-side mounting position (2) Primary grounding point
(3) Auxiliary grounding point 1 (4) Network port-side mounting position
Attaching the mounting brackets and chassis rails to the chassis
1. Align the mounting brackets with the screw holes in the chassis. Use M4 screws (provided) to
attach the mounting brackets to the chassis.
{To install the mounting brackets at the power supply-side mounting position, see Figure
12, Figure 14, and Figure 16.
{To install the mounting brackets at the network port-side mounting position, see Figure
13, Figure 15, and Figure 17.
2. Align the chassis rails with the rail mounting holes in the chassis:
{If the mounting brackets are in the power supply-side mounting position, align the chassis
rails with the screw holes at the front of the side panels (see Figure 12, Figure 14,
and Figure 16).
{If the mounting brackets are in the network port-side mounting position, align the chassis
rails with the screw holes at the rear of the side panels (see Figure 13, Figure 15, and Figure
17).
3. Use M4 screws (provided) to attach the chassis rails to the chassis.
NOTE:
•Secure the mounting brackets and chassis rails to both sides of the chassis in the same way.
•To install the mounting brackets at the network port-side mounting position on the HPE 5940
2-slot and HPE 5940 4-slot switches, use the four screw holes nearest to the network port side.
To install the mounting brackets at the power supply-side mounting position on the HPE 5940
2-slot and HPE 5940 4-slot switches, use the four screw holes nearest to the power module side.

14
Figure 12 Attaching the mounting brackets and chassis rails to the HPE 5940 32QSFP+
switch (power supply-side mounting position for the mounting brackets)
Figure 13 Attaching the mounting brackets and chassis rails to the HPE 5940 32QSFP+
switch (network port-side mounting position for the mounting brackets)
Figure 14 Attaching the mounting brackets and chassis rails to the HPE 5940 2-slot switch
(power supply-side mounting position for the mounting brackets)

15
Figure 15 Attaching the mounting brackets and chassis rails to the HPE 5940 2-slot switch
(network port-side mounting position for the mounting brackets)
Figure 16 Attaching the mounting brackets and chassis rails to the HPE 5940 4-slot switch
(power supply-side mounting position for the mounting brackets)
Figure 17 Attaching the mounting brackets and chassis rails to the HPE 5940 4-slot switch
(network port-side mounting position for the mounting brackets)

16
Connecting the grounding cable to the chassis
CAUTION:
Select grounding points as required. The primary grounding point and auxiliary grounding point 1 are
located on the left side panel. If you use one of these grounding points, you must connect the
grounding cable to the grounding point before you mount the switch in the rack.
As a best practice, use the primary grounding point or auxiliary grounding point 1 because the
grounding cable and grounding screw that come with the switch are suitable only for these two
grounding points.
To use auxiliary grounding point 2, prepare a grounding cable yourself.
This section uses the primary grounding point on the HPE 5940 32QSFP+ switch as an example.
To connect the grounding cable to a grounding point:
1. Choose a grounding point.
2. Unpack the grounding cable and grounding screws.
You can use the cable and screws shipped with the switch only for connecting to the primary
grounding point or auxiliary grounding point 1.
3. Align the two-hole grounding lug at one end of the cable with the grounding holes of the
grounding point, insert the grounding screws into the holes, and tighten the screws with a
screwdriver, as shown in Figure 18.
Figure 18 Attaching the grounding cable to the primary grounding point on the HPE 5940
32QSFP+ switch
Attaching the slide rails to the rack
The procedures are the same for attaching 1U and 2U slide rails to the rack. This section uses the 1U
slide rails as an example.
To attach the slide rails to the rack:
1. Identify the rack attachment position for the slide rails.
2. Install cage nuts (user-supplied) in the mounting holes in the rack posts.
3. Align the screw holes in one slide rail with the cage nuts in the rack post on one side, and use
screws (user-supplied) to attach the slide rail to the rack, as shown in Figure 19.
4. Repeat the preceding steps to attach the other slide rail to the rack post on the other side.
Keep the two slide rails at the same height so the slide rails can attach into the chassis rails.