HPE FlexFabric 7900 Switch Series Installation Guide

Part number: 5200-1869bDocument version: 6W108-20181025

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Contents

Preparing for installation ···································································· 1 Safety recommendations ············································································································· 1 Examining the installation site ······································································································· 1

Temperature and humidity ····································································································· 2 Cleanliness ························································································································ 2 EMI ·································································································································· 2 Laser safety ······················································································································· 3

Installation accessories ··············································································································· 3 Installing the switch ·········································································· 5

Installing the switch in a 19-inch rack ····························································································· 5 Mounting brackets and cable management bracket ···································································· 5 Rack mounting rail kit ··········································································································· 8 Rack-mounting clearance requirements ··················································································· 9 Rack-mounting procedures at a glance ·················································································· 10 Installing the installation accessories for the HPE 7904 switch or HPE 7904 TAA switch ··················· 11 Installing the installation accessories for the HPE 7910 switch or HPE 7910 TAA switch ··················· 13 Rack-mounting the HPE 7904 switch or HPE 7904 TAA switch ··················································· 14 Rack-mounting the HPE 7910 switch or HPE 7910 TAA switch ··················································· 17

Grounding the switch ················································································································ 20 Installing FRUs ·············································································· 22

Attaching an ESD wrist strap ······································································································ 22 Installing switching fabric modules for the HPE 7910 switch or HPE 7910 TAA switch ···························· 22

Installing one switching fabric module ···················································································· 23 Installing two switching fabric modules ··················································································· 23

Installing fan trays ···················································································································· 24 Installing the HPE 7904 fan tray ··························································································· 24 Installing the HPE 7910 fan tray ··························································································· 25

Installing a power supply ··········································································································· 27 Connecting the power cord ········································································································ 29

Connecting an AC power cord to the switch ············································································ 29 Installing an LPU ····················································································································· 29 Verifying the installation ············································································································· 31

Replacing FRUs ············································································· 32 Replacing a fan tray·················································································································· 32

Replacing the HPE 7904 fan tray ·························································································· 32 Replacing the HPE 7910 fan tray ·························································································· 33

Replacing a switching fabric module ···························································································· 33 Replacing a power supply ··································································································· 34 Replacing an LPU ············································································································· 35

Accessing the switch for the first time ················································· 37 Setting up the configuration environment ······················································································ 37 Connecting the console cable ····································································································· 37 Setting terminal parameters ······································································································· 38 Powering on the switch ············································································································· 38 Configuring the switch ··············································································································· 39

Configuring login authentication modes ·················································································· 39 Configuring the basic access function ···················································································· 39 Configuration example ········································································································ 40 Verifying the network configuration ························································································ 40

Connecting the switch to the network ··························································································· 41 Connecting the switch to the network through an optical fiber ····················································· 41

Testing connectivity ·················································································································· 42

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Setting up an IRF fabric ··································································· 43 IRF fabric setup flowchart ·········································································································· 43 Planning IRF fabric setup ··········································································································· 44

Planning IRF fabric size and the installation site ······································································· 44 Identifying the master switch and planning IRF member IDs ······················································· 44 Planning IRF topology and connections·················································································· 45 Identifying physical IRF ports on the member switches ······························································ 45

Installing IRF member switches ··································································································· 45 Configuring basic IRF settings ···································································································· 45 Connecting the physical IRF ports ······························································································· 46 Verifying the IRF fabric configuration ···························································································· 46

Maintenance and troubleshooting ······················································ 47 Configuration terminal problems ·································································································· 47

No display on the configuration terminal ················································································· 47 Garbled display on the configuration terminal ·········································································· 47

Power supply failure ················································································································· 48 Fan tray failure ························································································································ 48 Switching fabric module failure ···································································································· 49 LPU failure ····························································································································· 49 Interface failure ······················································································································· 49

Document conventions and icons ······················································ 51 Conventions ··························································································································· 51 Network topology icons ············································································································· 52

Support and other resources ···························································· 53 Accessing Hewlett Packard Enterprise Support ·············································································· 53 Accessing updates ··················································································································· 53

Websites ························································································································· 54 Customer self repair ··········································································································· 54 Remote support ················································································································ 54 Documentation feedback ···································································································· 54

Appendix A Chassis views and technical specifications ·························· 56 Chassis views ························································································································· 56

HPE 7904/HPE 7904 TAA ··································································································· 56 HPE 7910/HPE 7910 TAA ··································································································· 57

Technical specifications ············································································································· 58 Weights ··························································································································· 58 Dimensions ······················································································································ 59 Ports and slots ·················································································································· 59 Power consumptions ·········································································································· 60 Heat dissipation ················································································································ 61 Temperature and humidity ··································································································· 61 Noise ······························································································································ 61

Other specifications ·················································································································· 62 Cooling system ························································································································ 62

Cooling system for the HPE 7904 switch and HPE 7904 TAA switch ············································ 62 Cooling system for the HPE 7910 switch and HPE 7910 TAA switch ············································ 63

Appendix B FRUs and compatibility matrixes ······································· 65 LPUs ····································································································································· 65 Switching fabric modules ··········································································································· 66 Power supplies ························································································································ 67 Fan trays ································································································································ 68 Transceiver modules ················································································································ 69

Appendix C Ports and LEDs ····························································· 74 Ports ····································································································································· 74

Console port ····················································································································· 74

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Management Ethernet port ·································································································· 74 USB port ························································································································· 74

LEDs ····································································································································· 74 HPE 7904 or HPE 7904 TAA chassis LEDs ············································································ 74 HPE 7910 or HPE 7910 TAA switching fabric module LEDs ······················································· 76 LPU LEDs ························································································································ 77 Power supply LEDs ··········································································································· 78

Index ··························································································· 79

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Preparing for installation The HPE FlexFabric 7900 Switch Series includes the models in Table 1.

Table 1 HPE FlexFabric 7900 Switch Series models

Product code HPE description RMN Alias JG682A HPE FlexFabric 7904 Switch Chassis BJNGA-AC0012 HPE 7904

JG841A HPE FlexFabric 7910 Switch Chassis BJNGA-AC0013 HPE 7910

JH122A HPE FlexFabric 7904 TAA-compliant Switch Chassis BJNGA-AC0012 HPE 7904 TAA

JH123A HPE FlexFabric 7910 TAA-compliant Switch Chassis BJNGA-AC0013 HPE 7910 TAA

IMPORTANT: For regulatory identification purposes, the switches are assigned regulatory model numbers (RMNs). These regulatory numbers should not be confused with the marketing names HPE 7904, HPE 7904 TAA, HPE 7910, and HPE 7910 TAA or the product codes JG682A, JH122A, JG841A, and JH123A.

Safety recommendations To avoid equipment damage and bodily injury, 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. • 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. • Make sure the input 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 cards, power supplies, and fan trays, wear an ESD wrist strap to avoid ESD damage. For information about wearing an ESD wrist strap, see "Attaching an ESD wrist strap."

Examining the installation site Make sure the installation site meets the following requirements: • Adequate clearance is reserved at the air inlet and outlet vents for ventilation. • The rack has a good ventilation system. • The rack has enough space to accommodate the switch. For information about switch

dimensions and requirements for the rack, see "Installing the switch."

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• 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 the switch, install it in an environment that meets the requirements described in the following subsections.

Temperature and humidity Maintain temperature and humidity in the equipment room as described in "Appendix A Chassis views and technical specifications." • 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 aging of insulation materials and significantly lower the

reliability and lifespan of the switch.

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 limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table 3.

Table 3 Harmful gas limits in the equipment room

Gas Maximum concentration (mg/m3) SO2 0.2

H2S 0.006

NH3 0.05

Cl2 0.01

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.

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• 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 to make sure the EMI levels do not exceed the compliant range. • Use electromagnetic shielding when necessary. For example, use shielded interface cables. • To prevent signal ports from getting damaged by over-voltage or over-current caused by

lightning strikes, only route interface cables indoors.

Laser safety

WARNING! Do not stare into any fiber ports when the switch has power. The laser light emitted from the optical fiber might hurt your eyes.

Installation accessories Table 4 Installation accessories

Product code Description Quantity Applicable models

5189-7975

7904 mounting bracket kit

1 kit 7904 switch

5189-8696

7910 mounting bracket kit

1 kit 7910 switch

5185-8684

Rack mounting rail kit

1 kit 7904 switch

JH042A

HP FlexFabric 7910 Bottom-Support Rails

1 kit 7910 switch

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Product code Description Quantity Applicable models

5185-8965 M6 screw and floating nut

8 kits All 7900 switches

5184-6723

Grounding cable

1 All 7900 switches

5185-8765

ESD wrist strap

1 All 7900 switches

5185-9579 Grounding screw

2 All 7900 switches

5185-8676

Power supply filler module

As required All 7900 switches

5185-8748 Power supply removable cable tie

As required All 7900 switches

5185-8627

Console cable

1 All 7900 switches

5185-8722

SFP/SFP+ dust plug

As required All 7900 switches

5187-9022

QSFP+ dust plug

As required All 7900 switches

5

Installing the switch CAUTION:

Keep the tamper-proof seal on a mounting screw on the HPE 7904 switch or HPE 7904 TAA switch 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.

Figure 1 Hardware installation flow

IMPORTANT: For the HPE 7910 switch or HPE 7910 TAA switch, install switching fabric modules before you install fan trays.

Installing the switch in a 19-inch rack Mounting brackets and cable management bracket

Mounting brackets are attached to the two sides of the switch chassis to secure the chassis to the rack. The cable management bracket is used to manage cables for LPUs. • HPE 7904 switch and HPE 7904 TAA switch

Start

Install the switch

Install FRUs

Ground the switch

Connect the power cords

Verify the installation

Power on the switch

Operating correctly? Power off the switchNo

Troubleshoot the switch

Yes

End

6

The HPE 7904 switch and HPE 7904 TAA switch each come with a pair of mounting brackets and a cable management bracket attached together, as shown in Figure 2.

Figure 2 Mounting bracket and cable management bracket kit for the HPE 7904 switch or HPE 7904 TAA switch

(1) Cable management bracket (2) Mounting bracket

• HPE 7910 switch and HPE 7910 TAA switch The HPE 7910 switch and HPE 7910 TAA switch each come with a pair of mounting

brackets, as shown in Figure 3.

Figure 3 Mounting brackets for the HPE 7910 switch or HPE 7910 TAA switch

No cable management bracket is provided with the HPE 7910 switch or HPE 7910 TAA switch. As a best practice, use the HPE FlexFabric 7910 Cable Management Frame (JH041A) as shown in Figure 4. It includes the mounting rail and cable frame. To purchase the cable management frame, contact the Hewlett Packard Enterprise marketing personnel or local representative.

1 2

7

Figure 4 HPE 7910 cable management frame

(1) Cable frame (2) Mounting rail (3) Screw

As shown in Figure 5, Figure 6, and Figure 7, the HPE 7910 cable management frame can be in the following length if you attach the mounting rail to different positions on the cable frame: − 90 mm (3.54 in). − 111.5 mm (4.39 in). − 150 mm (5.91 in).

Figure 5 Attaching the mounting rail to the cable frame (1)

Figure 6 Attaching the mounting rail to the cable frame (2)

1

2

3

90mm(3.54in)

111.5mm(4.39in)

8

Figure 7 Attaching the mounting rail to the cable frame (3)

Rack mounting rail kit • HPE 7904 switch and HPE 7904 TAA switch

A pair of chassis rails and a pair of slide rails are provided with the HPE 7904 switch or HPE 7904 TAA switch.

Figure 8 Rack mounting rail kit for the HPE 7904 switch or HPE 7904 TAA switch

(1) Chassis rail (2) Slide rail

• HPE 7910 switch and HPE 7910 TAA switch No rack mounting rail kit is provided with the HPE 7910 switch or HPE 7910 TAA switch. As a best practice, use the HPE FlexFabric 7910 Bottom-Support Rails (JH042A). The HPE 7910 bottom-support rails have an adjustment range of 630 mm (24.80 in) to 900 mm (35.43 in). The bottom-support rails do not occupy rack space and apply to racks that have the distance between the front and rear rack posts in the length range of the bottom-support rails. To purchase the bottom-support rails, contact the Hewlett Packard Enterprise marketing personnel or local representative.

150mm(5.91in)

1 2

9

Figure 9 Left bottom-support rail

(1) Front mark (2) Guide rail (3) Installation hole

Rack-mounting clearance requirements Table 5 Rack-mounting clearance requirements

Model Router dimensions Rack requirements

• HPE 7904

• HPE 7904 TAA

• Height—88.1 mm (3.47 in) (2 RU). • Width—440 mm (17.32 in). • Total depth—876 mm (34.49 in).

720 mm (28.35 in) for the chassis. 90 mm (3.54 in) for the cable

management bracket at the chassis front.

66 mm (2.60 in) for the components at the chassis rear.

• IEC-compliant. • A minimum of 1 m (3.28 ft) in depth. • 607 mm (23.90 in) to 1014 mm (39.92

in) between the front and rear rack posts.

• A minimum of 100 mm (3.94 in) between the front rack post and the front door.

• A minimum of 840 mm (33.07 in) between the front rack post and the rear door.

• HPE 7910

• HPE 7910 TAA

• Height—220 mm (8.66 in) (5 RU). • Width—440 mm (17.32 in). • Total depth—807.1 mm (31.78 in).

760 mm (29.92 in) for the chassis. 21.1 mm (0.83 in) for the card

ejector levels at the chassis front. 26 mm (1.02 in) for the

components at the chassis rear.

• IEC-compliant. • A minimum of 1 m (3.28 ft) in depth. • 630 mm (24.80 in) to 900 mm (35.43

in) between the front and rear rack posts.

• A minimum of 100 mm (3.94 in) between the front rack post and the front door.

• A minimum of 840 mm (33.07 in) between the front rack post and the rear door.

2 RU

1 RU (Rack Unit) = 44.45 mm (1.75 in)3 2

1

10

Figure 10 HPE 7904 and HPE 7904 TAA dimensions

(1) Power supply handle (2) Cable management bracket (3) Fan tray handle

Figure 11 HPE 7910 and HPE 7910 TAA dimensions

(1) Fan tray handle (2) Card handle (3) Power supply handle

Rack-mounting procedures at a glance You can install the HPE 7904 switch or HPE 7904 TAA switch in a 19-inch rack by using the mounting brackets and rack mounting rail kit as described in Figure 12.

Figure 12 Rack-mounting procedure for the HPE 7904 switch and HPE 7904 TAA switch

You can install the HPE 7910 switch or HPE 7910 TAA switch in a 19-inch rack by using the mounting brackets and slide rails as described in Figure 13.

Figure 13 Rack-mounting procedure for the HPE 7910 switch and HPE 7910 TAA switch

To support the weight of the chassis, you can prepare a pair of slides rails or rack shelf yourself for the switch. Make sure the slide rails or rack shelf has the following load-bearing capacities: • HPE 7904 switch or HPE 7904 TAA switch—A minimum of 40 kg (88.18 lb).

720mm (28.35 in)90mm(3.54 in)

66mm(2.60 in)

13

2

760 mm (29.92 in)21.1 mm(0.83 in)

26 mm(1.02 in)

3

21

Determine the mounting position for the mounting

brackets

Attach the mounting

brackets to the switch

Attach the chassis rails to the switch

Connect the grounding cable to the grounding point

Attach the slide rails to

the rack

Mount the

switch in the rack

Determine the mounting position for the mounting

brackets

Attach the mounting

brackets to the switch

Connect the grounding cable to the grounding point

Attach the slide rails to

the rack

Mount the

switch in the rack

11

• HPE 7910 switch or HPE 7910 TAA switch—A minimum of 70 kg (154.32 lb).

Installing the installation accessories for the HPE 7904 switch or HPE 7904 TAA switch

The HPE 7904 switch and HPE 7904 TAA switch each have one front mounting position (near the network ports) and one rear mounting position (near the power supplies). The switch also has one primary grounding point (with a grounding sign) and one auxiliary grounding point. Determine the positions for the mounting brackets and grounding cable before installation.

Figure 14 Installation positions for the mounting brackets and grounding cable

(1) Rear mounting position (power supply side) (2) Primary grounding point (3) Auxiliary grounding point (4) Front mounting position (network port side)

Attaching the mounting brackets and chassis rails to the HPE 7904 switch or HPE 7904 TAA switch

1. Align the screw holes in the mounting brackets with the screw holes in the mounting position, as shown in Figure 15. This example uses the rear mounting position.

2. Use the M4 countersunk screws supplied with the switch to attach the mounting brackets to the chassis.

3. Determine the installation positions for the chassis rails based on the rack depth. 4. Align the screw holes in the chassis rails with the rail mounting holes in the chassis. 5. Use the M4 screws supplied with the switch to attach the chassis rails to the chassis, as shown

in Figure 15.

1

3

2

4

12

Figure 15 Attaching the mounting brackets and chassis rails to the HPE 7904 switch or HPE 7904 TAA switch

Connecting the grounding cable to the HPE 7904 switch or HPE 7904 TAA switch

CAUTION: The primary grounding point and auxiliary grounding point 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.

To connect the grounding cable to a chassis grounding point, for example, the primary grounding point: 1. Unpack the grounding cable and grounding screws. 2. Use the grounding screws to attach the two-hole grounding lug of the grounding cable to the

grounding point, as shown in Figure 16.

13

Figure 16 Connecting the grounding cable to the HPE 7904 switch or HPE 7904 TAA switch

Installing the installation accessories for the HPE 7910 switch or HPE 7910 TAA switch

The HPE 7910 switch and HPE 7910 TAA switch each have one front mounting position (near the network ports) and one rear mounting position (near the power supplies). The switch also has one primary grounding point (with a grounding sign) and one auxiliary grounding point. Determine the positions for the mounting brackets and grounding cable before installation.

Figure 17 Installation positions for the mounting brackets and grounding cable

(1) Front mounting position (network port side) (2) Auxiliary grounding point (3) Primary grounding point (4) Rear mounting position (power supply side)

1 2

34

14

Attaching the mounting brackets and grounding cable to the HPE 7910 switch or HPE 7910 TAA switch

CAUTION: The primary grounding point and auxiliary grounding point are located on the right 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.

To install the mounting brackets and grounding cable on the HPE 7910 switch or HPE 7910 TAA switch: 1. Determine the installation positions for the mounting brackets and the grounding cable. 2. Align the screw holes in the mounting brackets with the screw holes in the mounting position, as

shown in Figure 18. This example uses the front mounting position.

3. Use the M4 countersunk screws supplied with the switch to attach the mounting brackets to the chassis.

4. Unpack the grounding cable and grounding screws. 5. Use the grounding screws to attach the two-hole grounding lug of the grounding cable to the

grounding point, as shown in Figure 18.

Figure 18 Attaching the mounting brackets and grounding cable to the HPE 7910 switch or HPE 7910 TAA switch

Rack-mounting the HPE 7904 switch or HPE 7904 TAA switch Attaching the slide rails to the rack

1. Determine the position on the rack for installing the slide rails. 2. Install cage nuts (user-supplied) in the mounting holes in the rear rack posts.

15

3. Align the screw holes in one slide rail with the cage nuts in a rear post, and use screws (user supplied) to attach the slide rail to the post, as shown in Figure 19.

4. Repeat the same steps to attach the other slide rail to the other rear post. Keep the two slide rails at the same height.

Figure 19 Installing the slide rails

Mounting the HPE 7904 switch or HPE 7904 TAA switch in the rack This task requires two people. To mount the switch in the rack: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Verify that the mounting brackets and chassis rails have been securely attached to the switch. 3. Verify that the slide rails have been correctly attached to the rear rack posts. 4. Install cage nuts (user-supplied) to the front rack posts and make sure they are at the same

level as the slide rails. 5. Supporting the bottom of the switch, align the chassis rails with the slide rails on the rack posts,

as shown in Figure 20. Work with another person to slide the chassis rails along the slide rails until the mounting brackets are flush with the rack posts.

6. Use screws (user-supplied) to attach the mounting brackets to the rack, as shown in Figure 21. To secure the switch in the rack, make sure the front ends of the slide rails reach out of the chassis rails.

16

Figure 20 Mounting the HPE 7904 switch or HPE 7904 TAA switch in the rack (1)

Figure 21 Mounting the HPE 7904 switch or HPE 7904 TAA switch in the rack (2)

17

Rack-mounting the HPE 7910 switch or HPE 7910 TAA switch

The HPE 7910 switch or HPE 7910 TAA switch is heavy with FRUs. Before you install the switch in the rack or remove the switch from the rack, remove the FRUs and filler panels from the switch.

Attaching the bottom-support rails to the rack 1. Read the mark on a bottom-support rail to identify the front and rear ends, as shown in Figure 9. 2. Mark the position on the rack for installing the bottom-support rail, as shown in Figure 22.

a. Insert the positioning tab at the bottom of the bottom-support rail into the lowest square hole within the 2 U space on the rack post. Ensure that the installation holes on the bottom-support rail are aligned with the square holes on the rack post.

b. Each rack post requires four screws to secure the bottom-support rail. You only need to mark the uppermost square hole and lowermost square hole for installation.

c. Mark the square holes at the same height on the other three rack posts.

Figure 22 Locating the rack position for installing the bottom-support rails

(1) Positioning tab (2) Lowest square hole within the 2U space on the rack post

3. Install four cage nuts on the square holes on each rack post. 4. Do the following as shown in Figure 23:

a. Align the installation holes on the front end of the bottom-support rail with the cage nuts on the front rack post.

b. Compress the bottom-support rail, making sure the positioning tabs at both ends of the bottom-support rail are inserted into the lowest square holes within the 2U space on the rack posts.

c. Use screws to secure the bottom-support rail to the rack posts.

1 RU

1 RU

1 RU

1 RU

1 21 2

18

Figure 23 Attaching the bottom-support rail to the cage nuts with screws

(1) Compress the bottom-support rail, making sure the positioning tabs are inserted into the square holes (2) Install fastening screws

TIP: Install a screw in each mounting hole of the bottom-support rail to ensure its weight bearing capacity.

5. Repeat step 4 to install the other bottom-support rail. Make sure the two bottom-support rails are at the same height so the device can be placed on them horizontally.

1

2

2

1

19

Figure 24 Installed bottom-support rails

Mounting the HPE 7910 switch or HPE 7910 TAA switch in the rack This task requires two people. To mount the switch in the rack: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Verify that the mounting brackets and grounding cable have been securely attached to the

switch. 3. Verify that the bottom-support rails have been correctly attached to the rack posts. 4. Install cage nuts to the front rack posts. 5. Use two people to lift the chassis into position between the rack posts. 6. Place the chassis on the guide rails of the bottom-support rails and slide the chassis slowly into

the rack until the mounting brackets are flush with the front rack posts, as shown in Figure 25. 7. Use screws provided with the switch to attach the mounting brackets to the front rack posts, as

shown in Figure 25.

20

Figure 25 Mounting the HPE 7910 switch or HPE 7910 TAA switch in the rack

Grounding the switch WARNING!

Reliably connecting the switch grounding cable is crucial to lightning protection and EMI protection.

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 by using a grounding strip at the installation site.

NOTE: The power and grounding terminals in this section are for illustration only.

WARNING! Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a fire main or lightning rod.

To connect the grounding cable: 1. Attach the two-hole grounding lug at one end of the grounding cable to a grounding point on the

switch chassis (see "Connecting the grounding cable to the HPE 7904 switch or HPE 7904 TAA switch").

2. Remove the hex nut of a grounding post on the grounding strip.

1

2

2

21

3. Attach the ring terminal at the other end of the grounding cable to the grounding strip through the grounding post, and fasten the ring terminal with the removed hex nut.

Figure 26 Connecting the grounding cable to a grounding strip

(1) Hex nut (2) Ring terminal (3) Grounding post (4) Grounding strip

1 2 3 4

22

Installing FRUs Table 6 FRUs for the switch models

FRU Applicable switch model

Switching fabric modules • HPE 7910 • HPE 7910 TAA

HPE 7904 fan trays • HPE 7904 • HPE 7904 TAA

HPE 7910 fan trays • HPE 7910 • HPE 7910 TAA

Power supplies HPE 7900 Switch Series

LPUs HPE 7900 Switch Series

As a best practice, connect the power cords after all FRUs are installed.

Attaching an ESD wrist strap The HPE 7910 switch and HPE 7910 TAA switch each come with an ESD wrist trap. No ESD wrist strap is provided with the HPE 7904 switch or HPE 7904 TAA switch. You need to prepare an ESD wrist strap for the HPE 7904 switch or HPE 7904 TAA switch yourself.

To minimize ESD damage to electronic components, wear an ESD wrist strap and make sure it is reliably grounded when installing FRUs.

To attach an ESD wrist strap: 1. Make sure the switch is reliably grounded. 2. Put on the wrist strap. 3. Tighten the wrist strap to keep good skin contact.

Make sure the resistance reading between your body and the ground is between 1 and 10 megohms.

4. Insert the ESD wrist strap into the ESD jack on the switch chassis, or attach it to the grounding screw of the chassis with an alligator clip.

Installing switching fabric modules for the HPE 7910 switch or HPE 7910 TAA switch

CAUTION: Install the switching fabric module before you install a fan tray.

The HPE 7910 switch or HPE 7910 TAA switch come with the lower switching fabric module and fan tray slots empty and a filler panel covering the upper switching fabric module and fan tray slots.

23

Installing one switching fabric module

IMPORTANT: If you install only one switching fabric module for the HPE 7910 switch or HPE 7910 TAA switch, install it in the lower switching fabric module slot. To maintain good ventilation, keep the upper filler panel in position.

To install one switching fabric module for the HPE 7910 switch or HPE 7910 TAA switch: 1. Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. 2. Pull the ejector levers of the switching fabric module outwards. Support the bottom of the

switching fabric module with its PCB up. Gently push the switching fabric module in along the slot guide rails until the brakes on the ejector levers touch the slot edges tightly, as shown by callout 1 in Figure 27. Do not touch the PCB while inserting the switching fabric module.

3. Push the ejector levers inward until they come in contact with the panel and the switching fabric module seats on the backplane, as shown by callout 2 in Figure 27.

4. Fasten the captive screws to secure the switching fabric module in the slot, as shown by callout 3 in Figure 27.

Figure 27 Installing one switching fabric module

Installing two switching fabric modules 1. Follow the procedures in "Installing one switching fabric module" to install a switching fabric

module in the lower switching fabric module slot. 2. Remove the filler panel that covers the upper switching fabric module and fan tray slots.

a. Use a Phillips screwdriver to loosen the screws on the filler panel. b. Insert a flat-blade screwdriver in the groove on the filler panel. Then pry up the screwdriver

and pull the filler panel slowly out along the guide rails.

1

2

3

24

Figure 28 Removing a filler panel

3. Follow the procedures in "Installing one switching fabric module" to install another switching fabric module in the upper switching fabric module slot.

Figure 29 Installing two switching fabric modules

Installing fan trays Installing the HPE 7904 fan tray

CAUTION: You can power on an HPE 7904 switch or HPE 7904 TAA switch only when the switch has two fan trays of the same model installed.

2

1

1

2

3

25

The installing and removing procedures are the same for the HPE FlexFabric 7904 back (power side) to front (port side) airflow fan tray (HPE 7904 back to front fan tray) and The HPE FlexFabric 7904 front (port side) to back (power side) airflow fan tray (HPE 7904 front to back fan tray).

To install an HPE 7904 fan tray: 1. Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. 2. Use a Phillips screwdriver to loosen the captive screws on the filler panel in the fan tray slot. 3. Thread a flat-blade screwdriver through the handle on the filler panel and pull out the filler panel

gently. Keep the filler panel secure for future use.

4. Unpack the fan tray and verify that the fan tray model is correct. 5. Holding the fan tray with both hands with the upside (marked with a "TOP" sign) up, gently push

the fan tray into the slot along the guide rails until the fan tray completely seats into the slot. See callout 1 in Figure 30. To prevent damage to the fan tray or the connectors on the backplane, insert the fan tray gently. If you encounter resistance while inserting the fan tray, pull out the fan tray and insert it again.

6. Use a Phillips screwdriver to tighten the captive screws on the fan tray to make sure the fan tray fully seats into the slot. See callout 2 in Figure 30. If the screws fail to be tightened, verify the installation of the fan tray.

Figure 30 Installing an HPE 7904 fan tray

Installing the HPE 7910 fan tray The installing and removing procedures are the same for the HPE FlexFabric 7910 back (power side) to front (port side) airflow fan tray (HPE 7910 back to front fan tray) and HPE FlexFabric 7910 front (port side) to back (power side) airflow fan tray (HPE 7910 front to back fan tray).

Before you install HPE 7910 back to front/HPE 7910 front to back fan trays on the HPE 7910 switch, follow these guidelines: • Determine the required number of fan trays based on the number of installed switching fabric

modules. If one switching fabric module is installed, one fan tray is required (You must install the fan tray in the lower fan tray slot). If two switching fabric modules are installed, two fan trays are required.

• Make sure the airflow direction of the fan tray meets the ventilation requirement at the installation site.

1

2

26

• Make sure a switching fabric module has been installed in the switching fabric module slot below the target fan tray slot.

• To install two fan trays, make sure the models of the two fan trays are the same.

To install an HPE 7910 fan tray: 1. Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. 2. Unpack the fan tray and verify that the fan tray model is correct. 3. Holding the fan tray with both hands with the upside (marked with a "TOP" sign) up, gently push

the fan tray into the slot along the guide rails until the fan tray is completely seated in the slot. See callout 1 in Figure 31 and Figure 32. To prevent damage to the fan tray or the connectors on the backplane, insert the fan tray gently. If you encounter resistance while inserting the fan tray, pull out the fan tray and insert it again.

4. Use a Phillips screwdriver to fasten the captive screws on the fan tray to secure the fan tray in the slot. See callout 2 in Figure 31 and Figure 32. If the screws fail to be fastened, verify the installation of the fan tray.

Figure 31 Installing one HPE 7910 fan tray

2

1

27

Figure 32 Installing two HPE 7910 fan trays

Installing a power supply The HPE 7904 switch or HPE 7904 TAA switch provides two power supply slots and supports 1+1 power supply redundancy. The HPE 7910 switch or HPE 7910 TAA switch provides four power supply slots and supports N+1 and N+N power supply redundancy. N can be 1 or 2.

You can install one or more power supplies for the switch. For more information about the power supplies available for the switch, see "Appendix B FRUs and compatibility matrixes."

To avoid device damage and bodily injury, follow the procedure in Figure 33 to install and power on the power supply.

Figure 33 Installation procedure

To install a power supply: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Remove the filler panel (if any) before installing the power supply. Thread a flat-blade

screwdriver through the power supply handle and pull out the filler panel gently as shown in Figure 34.

1

2

Install the power supply

Connect the power cord

Switch on the circuit breaker

28

Figure 34 Removing a filler panel

3. Unpack the power supply and verify that the power supply model is as required. 4. Correctly orient the power supply, grasp the handle of the power supply with one hand and

support its bottom with the other, and slide the power supply slowly along the guide rails into the slot until it has firm contact with the connectors on the backplane. To avoid damage to the connector of the power supply, insert the power supply gently. If you encounter resistance while inserting the power supply, pull out the power supply and insert it again.

Figure 35 Installing a power supply

29

NOTE: To ensure good ventilation, install a filler panel into the power supply slot immediately when the slot is empty.

Connecting the power cord IMPORTANT: • Use the power cord and the C15 connector supplied with the power supply. • Switch off the input circuit breaker before you connect the power cord to the switch.

Connecting an AC power cord to the switch 1. Connect one end of the AC power cord to the AC-input power receptacle on the switch. 2. Use cable tie to secure the power cord to the power supply handle, as shown in Figure 36. 3. Connect the other end of the power cord to the AC power outlet.

Figure 36 Connecting the AC power cord to the switch

(1) Cable tie (2) Secure the power cord to the power supply handle using the cable tie

Installing an LPU CAUTION:

Do not touch the surface-mounted components directly with your hands when installing or removing an LPU.

The switch comes with filler panels installed in all LPU slots except slot 1.

For LPUs available for the HPE FlexFabric 7900 Switch Series, see "Appendix B FRUs and compatibility matrixes."

The installing procedures are the same for the LPUs. This guide uses the LSVM1QGS12FX1 LPU as an example.

To install an LPU: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. If the slot has a filler panel, use a Phillips screwdriver to remove the mounting screws on the

filler panel, thread a flat-blade screwdriver through the handle on the filler panel, and pull out the filler panel gently.

12

30

Keep the removed filler panel for future use. 3. Unpack the LPU. 4. Gently push the LPU in along the slot guide rails until the brakes on the ejector levers touch the

slot edges tightly. Make sure the ejector levers are perpendicular to the LPU panel while inserting the LPU.

5. Press the ejector levers inward and continue pushing the LPU until the ejector levers come in contact the panel and the LPU seats on the backplane.

6. Tighten the captive screws with a Phillips screwdriver to secure the LPU in the slot.

Figure 37 Installing an LPU on the HPE 7904 switch or HPE 7904 TAA switch

(1) LPU-pushing direction (2) Ejector lever-closing direction (3) Screw-tightening direction

Figure 38 Installing an LPU on the HPE 7910 switch or HPE 7910 TAA switch

(1) LPU-pushing direction (2) Ejector lever-closing direction (3) Screw-tightening direction

1

2

3

1

2

3

31

Verifying the installation After you complete the installation, verify that: • There is enough space for heat dissipation around the switch. • The grounding cable is connected reliably. • The power supplies are as required. • The power cords are connected correctly.

32

Replacing FRUs CAUTION: • When you hot-swap an FRU, ensure electrical safety. • To avoid device damage and bodily injury, follow the replacing procedures strictly.

The switch adopts the modular architecture and supports hot swapping of FRUs.

Replacing a fan tray Follow these guidelines when you replace a fan tray: • Never touch any part of the fans. • Take out the fan tray after the fans completely stop rotating. • The switch supports 1+1 fan tray redundancy. When one fan tray fails, the device can operate

correctly if the failed fan tray is still in position. You do not need to replace the failed fan tray immediately.

Replacing the HPE 7904 fan tray

CAUTION: • When an HPE 7904 fan tray fails,

Do not remove the fan tray if you cannot replace the fan tray immediately. Finish replacing the fan tray within 5 minutes.

• When both fan trays fail, replace the fan trays one after another. Make sure the device does not operate for more than 3 minutes when no fan trays are installed.

The replacing procedures are the same for the HPE 7904 back to front fan tray and HPE 7904 front to back fan tray.

To replace an HPE 7904 fan tray: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Loosen the captive screws on the fan tray with a Phillips screwdriver until they are completely

disengaged from the switch chassis. 3. Grasp the handle of the fan tray with one hand and pull the fan tray part way out the slot.

Support the fan tray bottom with the other hand, and pull the fan tray slowly along the guide rails out of the slot.

4. Put the removed fan tray into an antistatic bag. 5. Install a new fan tray. For more information, see "Installing the HPE 7904 fan tray."

33

Replacing the HPE 7910 fan tray

CAUTION: When two fan trays are installed, follow these guidelines to replace the fan trays: • If one fan tray fails, the switch can operate correctly if you keep the failed fan tray in position, and

immediate replacement is not required. If you want to replace the failed fan tray, finish the replacement within 3 minutes.

• If both fan trays fail, replace the fan trays one after another. Make sure the device does not operate for more than 2 minutes when no fan trays are installed.

The replacing procedures are the same for the HPE 7910 back to front fan tray and HPE 7910 front to back fan tray.

To replace an HPE 7910 fan tray: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Loosen the captive screws on the fan tray with a Phillips screwdriver until they are completely

disengaged from the switch chassis. 3. Grasp the handle of the fan tray with one hand and pull the fan tray part way out the slot.

Support the fan tray bottom with the other hand, and pull the fan tray slowly along the guide rails out of the slot.

4. Put the removed fan tray into an antistatic bag. 5. Install a new fan tray. For more information, see "Installing the HPE 7910 fan tray."

Replacing a switching fabric module IMPORTANT:

Remove the fan tray in fan tray slot 1 before you remove the switching fabric module in slot 10. Remove the fan tray in fan tray slot 2 before you remove the switching fabric module in slot 11. For more information about replacing fan trays, see "Installing the HPE 7910 fan tray."

CAUTION: To avoid LPU damage, do not make the HPE 7910 switch or HPE 7910 TAA switch operate for more than 5 minutes when the switch has no switching fabric modules installed.

To replace a switching fabric module: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Use a screwdriver to loosen the captive screws from the switching fabric module. Pull the

ejector levers at both sides of the switching fabric module outward and pull the switching fabric module along the guide rails part way out. See Figure 39.

3. Supporting the module bottom, pull the module completely out of the switch chassis. See Figure 40.

4. Install a new switching fabric module. For more information, see "Installing switching fabric modules for the HPE 7910 switch or HPE 7910 TAA switch"

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Figure 39 Removing a switching fabric module (1)

Figure 40 Removing a switching fabric module (2)

Replacing a power supply To avoid device damage and bodily injury, follow the procedure in Figure 41 to replace a power supply.

Figure 41 Removal procedure

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1

1 2

Remove the power cord

Remove the power supply

Switch off the circuit breaker

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To replace a power supply: 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Release the cable tie securing the power cord to the handle and remove the power cord from

the power supply. 3. Push the latch on the power supply to the handle side with your forefinger and clasp your thumb

to the handle on the power supply, and pull the power supply part way out of the slot. 4. Supporting the power supply bottom with one hand, slowly pull the power supply out with the

other hand. 5. Put the removed power supply in an anti-static bag. 6. Install a new power supply. For more information, see "Installing a power supply."

Figure 42 Removing a power supply

(1) Push the latch to the handle side with the forefinger (2) Pull out the power supply

Replacing an LPU 1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded. 2. Use a Phillips screwdriver to loosen the captive screws from the LPU. See callout 1 in Figure 43

and Figure 44. 3. Pull the ejector levers at both sides of the LPU outward, and pull the LPU part way out of the slot.

See callout 2 in Figure 43 and Figure 44. 4. Supporting the LPU bottom with one hand, pull the LPU out of the slot with the other hand. See

callout 2 in Figure 43 and Figure 44. 5. Install a new LPU. For more information, see "Installing an LPU."

1

2

36

Figure 43 Removing an LPU from the HPE 7904 switch or HPE 7904 TAA switch

(1) Direction for loosening the captive screws (2) Direction for opening the ejector lever (3) Direction for pulling out the LPU

Figure 44 Removing an LPU from the HPE 7910 switch or HPE 7910 TAA switch

(1) Direction for loosening the screws (2) Direction for opening the ejector lever (3) Direction for pulling out the LPU

1

2 3

1

2

3

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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, as shown in Figure 45.

Figure 45 Connecting the console port to a terminal

Connecting the 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 46 Console cable

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Table 7 Console port signaling and pinout

RJ-45 Signal DB-9 Signal

1 RTS 8 CTS

2 DTR 6 DSR

3 TXD 2 RXD

4 SG 5 SG

5 SG 5 SG

6 RXD 3 TXD

7 DSR 4 DTR

8 CTS 7 RTS

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. 2. Connect the RJ-45 connector to the console port of the switch.

NOTE: Identify the mark on the console port and make sure you are connecting to the correct port.

Setting terminal parameters To configure and manage the switch through the console port, you must run a terminal emulator program, HyperTerminal or PuTTY, on your configuration terminal. You can use the emulator program to connect a network device, a Telnet site, or an SSH site. For more information about the terminal emulator programs, see the user guides for these programs.

The following are the required terminal settings: • Bits per second—9,600. • Data bits—8. • Parity—None. • Stop bits—1. • Flow control—None.

Powering on the switch Before powering on the switch, confirm the following: • The switch has been securely mounted. • All the cards have been correctly installed. • The unused slots have been installed with filler panels. • All the network cables, fibers, power cords, and grounding cables have been correctly

connected. • The input power voltage meets the requirement of the switch. • The console cable is correctly connected, the terminal used for configuration has started, and

the configuration parameters have been set for the terminal.

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Power on the switch. During the startup process, you can access BootWare menus to perform tasks such as software upgrade and file management. The BootWare interface and menu options differ with software versions. For more information about BootWare menu options, see the software-matching release notes for the switch.

After the startup completes, you can access the CLI to configure the switch.

After powering on the switch, verify the following items: • The cooling system is operating, and you can hear fan rotating and feel air being blown out. • The LEDs show that the system is operating correctly. For more information about LEDs, see

"Appendix C Ports and LEDs."

Configuring the switch The first time you access the switch, you can only log in to the CLI through the console port, and no authentication is required. To increase system security and enable remote management, you can do the following at the first login: • Configure other login methods, for example, Telnet, SSH, or NMS. • Assign user roles. • Configure login authentication modes. • Configure the basic access function.

Configuring login authentication modes You can configure login authentication modes to control access to the switch.

Table 8 describes the Telnet login authentication methods available for a VTY user line.

Table 8 Telnet login authentication methods

Authentication method Feature Application scenarios

None Easy to configure, allows any user to Telnet to your switch, and lowest in security Lab environments and extremely secure network environments

Password Easy to configure, secure, and flat user management Environments that do not need granular privilege management

Username and password Complex to configure, secure, and hierarchical user management

Environments where multiple user roles cooperate to manage the switch

For more information about login methods, see HPE FlexFabric 7900 Switch Series Fundamentals Configuration Guide.

Configuring the basic access function An HPE 7900 switch without any configuration can perform basic data forwarding immediately after it is plugged into a network. To implement more forwarding features, configure the basic network settings in Table 9 on the switch.

Table 9 Basic network settings

Setting Description IP address Enables remote switch management, for example, by using Telnet.

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Setting Description Static routes Implement static routing.

VLANs Divide the LAN into multiple VLANs for data security.

Configuration example Configuring Telnet service

# Enter system view. system-view

# Enable the Telnet server. [Sysname] telnet server enable

# Enter the view of user line VTY 0. [Sysname] user-interface vty 0

# Enable password authentication on the user line. [Sysname-ui-vty0] authentication-mode password

# Set the password to hello in plaintext. [Sysname-ui-vty0] set authentication password simple hello

# Assign user role network-admin through the user line VTY 0. [Sysname-ui-vty0] user-role network-admin

[Sysname-ui-vty0] quit

Configuring the basic network settings • Configure IP addresses

# Create VLAN-interface 1. [Sysname] interface vlan-interface 1

# Assign an IP address, for example, 192.168.0.1, to VLAN-interface 1. [Sysname-Vlan-interface1] ip address 192.168.0.1 24

[Sysname-Vlan-interface1] quit

• Configure static routes # Configure a static route, with the destination IP address 172.16.1.0 and the next hop IP address 192.168.0.2. [Sysname] ip route-static 172.16.1.0 255.255.255.0 192.168.0.2

• Configure VLANs # Create VLAN 10 and enter its view. [Sysname] vlan 10

[Sysname-vlan10]

# Assign port Ten-GigabitEthernet 1/0/1 to VLAN 10. [Sysname-vlan10] port ten-gigabitethernet 1/0/1

[Sysname-vlan10] quit

For more information about these features, see HPE FlexFabric 7900 Switch Series Configuration Guides.

Verifying the network configuration To verify the software version and network configuration, perform display commands in any view.

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Task Command Display the name, model, and system software version of the switch. display version

Display the current configuration of the switch. display current-configuration

Display the interface status and configuration. display interface brief

Display the IP configuration of Layer 3 interfaces. display ip interface brief

Display brief information about active routes in the routing table. display ip routing-table

Display VLAN settings. display vlan

Connecting the switch to the network Before you connect the switch to the network, verify that all its basic network settings are correct.

Connecting the switch to the network through an optical fiber

WARNING! To avoid injury to your eyes, do not stare at the optical ports and optical fiber connectors when connecting optical fibers.

To connect the switch to the network through an optical fiber: 1. Install a transceiver module on the switch and the network access device. 2. Remove the dust cover from the optical fiber connector, and clean the end of the optical fiber. 3. Remove the dust plug from the transceiver module, plug one end of the optical fiber into the

transceiver module on the switch, and plug the other end into the transceiver module on the network access device. For information about how to connect an LC connector, see Figure 47. For information about how to connect an MPO connector, see Figure 48.

Figure 47 Using an LC optical fiber connector to connect an SFP module

LC plug

SFP+ module

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Figure 48 Using an MPO optical fiber connector to connect a QSFP module

4. Verify the connection by examining the port LEDs. For more information about the LEDs, see "Appendix C Ports and LEDs."

Testing connectivity After you plug the switch into the network, use the ping or tracert command to test the network connectivity. For more information about these commands, see HPE FlexFabric 7900 Switch Series Command References.

MPO plug

QSFP+ module

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Setting up an IRF fabric You can use HPE IRF technology to connect and virtualize HPE 7900 switches into a large virtual switch called an "IRF fabric" for flattened network topology, high availability, scalability, and manageability. For more information about IRF, see HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

IRF fabric setup flowchart The setup flow is shown in Figure 49. For the actual procedure, see HPE FlexFabric 7900 Switch Series IRF Configuration Guide for the software release you are using.

Figure 49 IRF fabric setup flowchart

To set up an IRF fabric:

Step Description

1. Plan IRF fabric setup.

Plan the installation site and IRF fabric setup parameters: • Planning IRF fabric size and the installation site • Identifying the master switch and planning IRF member IDs • Planning IRF topology and connections • Identifying physical IRF ports on the member switches

Start

Plan IRF fabric setup

Install IRF member switches

Power on the switches

Log in to the IRF fabric to verify the settings

End

Configure basic IRF settings on each switch in standalone mode

Connect the physical IRF ports

Configure other settings in IRF mode

Enable IRF mode

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Step Description 2. Install IRF member switches. See "Installing IRF member switches."

3. Power on the switches. N/A

4. Configure basic IRF settings on each switch in standalone mode. See HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

5. Connect the physical IRF ports. Connect physical IRF ports on switches.

6. Enable IRF mode. See HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

7. Verify the IRF settings. Log in to the IRF fabric at any member switch and verify that you can configure all member switches as if they were one node.

8. Configure other settings in IRF mode. See HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

Planning IRF fabric setup This section describes issues that an IRF fabric setup plan must cover.

Planning IRF fabric size and the installation site Plan IRF fabric size and the installation site, as follows: 1. Use HPE FlexFabric 7900 Switch Series IRF Configuration Guide as a reference to identify the

number of member switches that your system software version supports for an HPE 7900 IRF fabric.

2. Choose HPE 7900 switch models for your network. An HPE 7900 IRF fabric supports up to two member switches. The member switches must be the same model.

3. Select LPUs that can provide 10-GE/40-GE/100-GE ports. The HPE 7900 switch series requires 10-GE/40-GE/100-GE ports for IRF connection. For more information about the LPUs, see "Appendix B FRUs and compatibility matrixes."

4. Select SFP+/QSFP+/CXP transceiver modules and fibers for long-distance IRF connection. Select SFP+/QSFP+/QSFP+ to SFP+ DAC cables for short-distance IRF connection. For more information about transceiver modules and cables, see "Appendix B FRUs and compatibility matrixes."

5. Plan the installation site.

Identifying the master switch and planning IRF member IDs Determine which switch you want to use as the master for managing all member switches in the IRF fabric.

An IRF fabric has only one master switch. You configure and manage all member switches in the IRF fabric at the CLI of the master. 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 HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

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.

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Planning IRF topology and connections Connect the IRF member switches through IRF ports, the logical interfaces for the connections 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 a minimum of one physical port 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.

A two-member IRF fabric must use the daisy chain topology.

Figure 50 Daisy chain 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.

On HPE 7900 switches, only 10-GE/40-GE/100-GE ports can be used for IRF connection.

The HPE 7900 switches support multi-card link aggregation for IRF ports. You can bind up to eight physical ports to one IRF port.

Installing IRF member switches Step Reference 1. Prepare the installation site. See "Preparing for installation."

2. Mount the IRF member switches to racks. See "Installing the switch."

3. Install modules on IRF member switches. See "Installing FRUs."

Configuring basic IRF settings After you install the IRF member switches, power on the switches, and log in to each IRF member switch (see "Connecting the switch to the network") to configure their member IDs, member priorities, and IRF port bindings.

Follow these guidelines when you configure the switches: • First configure the member IDs, member priorities, and IRF port bindings for the IRF member

switches, save the configuration, connect the member switches, and change the operating mode of the switches to IRF mode.

• 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. • Execute the display irf configuration command to verify the basic IRF settings.

IRF-Port1IRF-Port2

IRF

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For more information about configuring basic IRF settings, see HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

Connecting the physical IRF ports Follow these guidelines when you select transceiver modules and cables: • Use SFP+ transceiver modules and fibers for long-distance connection, or use SFP+ DAC

cables to connect SFP+ ports for short-distance connection. • When connecting SFP+ ports, connect the transmit port of an SFP+ transceiver module at one

end to the receive port of an SFP+ transceiver module at the other end. • Use QSFP+ transceiver modules and fibers for long-distance connection, or use QSFP+ DAC

cables to connect QSFP+ ports for short-distance connection. • Use CXP transceiver modules and fibers to connect CXP ports. • The transceiver modules at the two ends of an IRF link must be of the same type.

Figure 51 Connecting two IRF member switches

Verifying the IRF fabric configuration After you finish configuring basic IRF settings and connecting IRF ports, verify the basic functionality of the IRF fabric, as follows: 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 the IRF fabric and the

remote network management station can reach each other. 3. Use Telnet or SNMP to access the IRF fabric from the network management station. (See HPE

FlexFabric 7900 Switch Series Fundamentals Configuration Guide.) 4. Verify 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 10.

Table 10 Displaying and maintaining IRF configuration and running status

Task Command Display information about the IRF fabric display irf

Display topology information about the IRF fabric display irf topology

To avoid IP address collision and network problems, configure a minimum of one MAD mechanism to detect the presence of multiple identical IRF fabrics and handle collisions. For more information about MAD, see HPE FlexFabric 7900 Switch Series IRF Configuration Guide.

1 2

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Maintenance and troubleshooting To avoid switch failures, maintain the switch as follows: • Clean your switch periodically. • Make sure the switch operates in a compliant environment. • Verify the installation environments against the requirements in "Preparing for installation." • Periodically perform the power-on test for the spare switches.

When the switch fails, you can locate the failures by using related display commands or by LEDs. • Use display commands to examine the configuration for configuration errors or examine

statistics for exceptions. If any configuration error is found, re-configure the switch or restore the factory-default settings. For more information, see HPE FlexFabric 7900 Switch Series Fundamentals Configuration Guide.

• Examine LEDs to locate the faulty component. For more information about the LEDs, see "Appendix C Ports and LEDs."

If you cannot locate failures by following the guidelines in this chapter, contact Hewlett Packard Enterprise Support.

Configuration terminal problems No displ