Juniper QFX5220-128C Manuale utente

Quick Start Guide

QFX5220-128C Quick Start Guide

IN THIS GUIDE

System Overview | 1

Tools and Parts Required for Installation | 2

Part 1: Mount the Switch into a 4-Post Rack | 3

Part 2: Ground the Chassis and Connect Power | 5

Connect Power to the Switch | 6

Part 3: Connect the QFX5220-128C to the Network and Perform the Initial Configuration | 8

QFX5220-128C Safety Warning Summary | 10

System Overview

The QFX5220-128C offers 128 ports of 100-Gigabit Ethernet in a 4 U form factor. With 12.8 Tbps bandwidth, the

QFX5220-128C is optimally designed as data aggregation or top of rack switch in small to medium size data centers and

MSDC (Massively Scalable Data Center) deployments. The 100 Gigabit Ethernet ports can be configured either for

100-Gbps or 40-Gbps speeds. The 100-Gbps ports can also be channelized into 2 x 50 Gbps, 4 x 25 Gbps, or 4 x 10 Gbps.

There are two dedicated small form factor plus (SFP+) for 10-Gigabit Ethernet support.

An Intel Xeon D-1500 processor drives the QFX5220 control plane, which runs the Junos OS Evolved software. The Junos

OS Evolved software image is stored on two internal 50 GB solid-state drives (SSDs). The QFX5220-128C is available

with ports-to-FRUs airflow, (airflow out), and with AC or DC power supplies.

Tools and Parts Required for Installation

The Quick Start Guide is designed to show the basic installation and startup procedures. For complete instructions see

the QFX5220 Hardware Guide at QFX5220 Switch Hardware Guide.

Gather the tools and equipment listed in Table 1 for installing the switch in a 4 post rack.

Table 1: Inventory of Components Supplied with a QFX5220-128C Device

Provided/Not ProvidedComponent

ProvidedChassis, including 4 power supply modules and 6 fans

ProvidedRack mount kit for QFX5220-128C, including 2 mounting rails

(right and left), 2 mounting blades, 2 flanges, 6 Phillips M4 x 8 mm

flathead screws, and 24 Phillips M4 x 6 mm flathead screws

ProvidedRJ-45 cable and RJ-45 to DB-9 adapter

ProvidedC13 AC power cords with plugs appropriate to your geographical

location (AC systems only)

Not ProvidedElectrostatic discharge (ESD) grounding strap

Not ProvidedA Phillips (+) screwdriver, number 2

Not providedSixteen screws to secure the chassis and rear installation blades

to the rack

Not providedGrounding lug, Panduit LCD10-10A-L or equivalent, two 10-32

x 0.25 screws with #10 split-lock washers to secure the grounding

lug to the grounding lug bracket protective earthing terminal

Not ProvidedA Management host, such as a laptop or PC, with an Ethernet port

addition or change to the installation base or if the installation base is moved. Juniper Networks will not be held accountable

for not meeting the hardware replacement service-level agreement for products that do not have registered serial numbers

or accurate installation base data.

Update your install base at https://www.juniper.net/customers/csc/management/updateinstallbase.jsp.

Part 1: Mount the Switch into a 4-Post Rack

CAUTION: A QFX5220-128C requires two people for installation, one person to lift the device into

place and another person to attach the device to the rack. If you are installing the QFX5220 above 60

in. (152.4 cm) from the floor, you can remove the power supplies and fan modules to minimize the weight

before attempting to install the device or use a mechanical lift.

CAUTION: If you are mounting multiple devices on a rack, mount the device in the lowest position of

the rack first. Proceed to mount the rest of the devices from the bottom to the top of the rack to minimize

the risk of the rack toppling.

You can mount QFX5220 switches on a four-post 19-in. rack or cabinet using the rack mount kit provided with the switch.

To mount the QFX5220-128C on a four post rack using the provided rack mount kit:

1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.

2. Decide whether the Field Replaceable Unit (FRU) end of the switch or the port end is to be placed at the front of the

rack. Position the device in such a manner that the AIR IN labels on components are next to the cold aisle and AIR

OUT labels on components are next to the hot aisle.

3. Align the holes in the flange with the holes closest to the port panel.

Figure 1: Attaching the Flange to the QFX5220-128C Chassis

QFX5220-128C

g051182

4. Use the Phillips number 2 screwdriver to attach the flange to the chassis using two M4 x 6 mm flathead screws in the

top and bottom holes. Tighten the screws. See Figure 1.

5. Repeat steps 3and 4and attach the second flange to the opposite side of the chassis.

6. Align the holes in the left mounting rail with the holes on the side of the chassis and in the flange. See Figure 2 to see

the proper alignment for the QFX5220-128C.

NOTE: There is a left mounting rail, stamped LEFT, and a right mounting rail, stamped RIGHT. The mounting

rails are not interchangable.

Figure 2: Attaching Mounting Rails to the QFX5220-128C Chassis

g051183

QFX5220-128C

Right mounting rail Left mounting rail

7. Use the Phillips number 2 screwdriver to attach the front of the mounting rail to the flange and chassis using three

M4 x 8 mm flathead screws. These slightly longer screws are needed to attach the mounting bracket through the flange

to the chassis. Tighten the screws.

8. Use eight of the shorter, M4 x 6 mm, flathead screws to complete the attachment of the mounting rail to chassis.

Tighten the screws using the Phillips number 2 screwdriver.

9. Repeats steps 6through 8for the right mounting bracket on the opposite side of the switch.

10. Use a mechanical lift or have one person grasp both sides of the switch, lift it, and position it in the rack so that the

front bracket is aligned with the rack holes.

11. Have a second person secure the front of the switch to the rack using eight mounting screws (and cage nuts and

washers if your rack requires them.) Tighten the screws. See Figure 3 for an example of connecting the mounting rails

and mounting blades to a QFX5220-128C.

Figure 3: Attach QFX5220-128C to Rack

g051184

QFX5220-128C

12. Continue to support the switch while sliding the two mounting blades into the two mounting rails. Secure the mounting

blades to the rack using the eight remaining mounting screws (and cage nuts and washers if your rack requires them).

Tighten the screws. See Figure 4.

Figure 4: Slide Mounting Blade into Mounting Rail

g051185

QFX5220-128C

13. Ensure that the switch chassis is level by verifying that all the screws on the front of the rack are aligned with the

screws at the back of the rack.

14. We recommend that you insert dust covers in any unused ports.

Part 2: Ground the Chassis and Connect Power

To connect earth ground to a QFX5220-128C:

1. Use two 10-32 x 0.25 screws with #10 split-lock washers (not provided) to secure the grounding lug and attached

cable (not provided) to the FRU panel of the chassis. The posts on the grounding lug should point to the right. See

Figure 5.

Figure 5: Connecting a Grounding Cable to a QFX5220-128C

g051191

2. Connect the remaining end of the grounding cable to a proper earth ground, such as the rack in which the switch is

mounted.

3. Dress the grounding cable and ensure that it does not touch or block access to other device components and that it

does not drape where people could trip over it.

Connect Power to the Switch

The QFX5220-128C is shipped from the factory with four power supplies. Each power supply is a hot-removable and

hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install a

replacement power supply in either of the two slots next to the fan modules without powering off the switch or disrupting

the switching function.

To connect AC power to a QFX5220-128C:

1. Attach the grounding strap to your bare wrist and to a site ESD point.

2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure.

3. Locate the power cords shipped with the switch; the cords have plugs appropriate for your geographical location.

For each power supply:

a. Ensure the loop on the power cord retainer is open and there is enough space to insert the power cord coupler into

the inlet. If the loop is closed, press the small tab on the retainer to loosen the loop.

b. Thread the power cord coupler through the power cord retainer loop.

c. Insert the power cord coupler firmly into the AC inlet on the power supply faceplate.

d. Slide the power cord retainer loop towards the power supply until it is snug against the base of the coupler.

e. Press the tab on the loop and draw out the loop to enclose the power cord. See Figure 6.

Figure 6: Attaching the Power Cord Retainer

g051161

WARNING: Ensure that the power cord does not block access to device components or drape where

people can trip on it.

4. If the AC power source outlet has a power switch, set it to the OFF (O) position.

NOTE: The switch powers on as soon as power is provided to the power supply. There is no power switch on

the device.

5. Insert the power cord plug into an AC power source outlet.

6. If the AC power source outlet has a power switch, set it to the ON (|) position.

7. Verify that the AC and DC LEDs on each power supply are lit green.

If the amber fault LED is lit, remove power from the power supply, and replace the power supply (see How to Remove

a Power Supply from a QFX5220). Do not remove the power supply until you have a replacement power supply ready:

the power supplies must be installed in the switch to ensure proper airflow.

CAUTION: Replace a failed power supply with a new power supply within three minutes of removal

to prevent chassis overheating.

Part 3: Connect the QFX5220-128C to the Network and

Perform the Initial Configuration

Connect the QFX5220-128C to your network for out-of-band management:

1. Connect one end of the Ethernet cable to the management port (labeled Mgmt) on the QFX5220-128C.

2. Connect the other end of the Ethernet cable to the management device.

You must perform the initial configuration of the QFX5220 through the console port using the CLI or through Zero Touch

Provisioning (ZTP). In order to use ZTP to provision the device, you must have access to a Dynamic Host Control Protocol

(DHCP) server, and a File Transfer Protocol (anonymous FTP), Hypertext Transfer Protocol (HTTP), or Trivial File Transfer

Protocol (TFTP) server on which the software image and configuration files are stored. For more information about using

ZTP for provisioning the device, see Understanding Zero Touch Provisioning in the Installation and Upgrade Guide.

Before you begin connecting and configuring a QFX5220, set the following parameter values on the console server or

PC:

•Baud Rate—9600

•Flow Control—None

•Data—8

•Parity—None

•Stop Bits—1

•DCD State—Disregard

To connect and configure the switch from the console:

1. Connect the console port to a laptop or PC using the supplied RJ-45 cable and RJ-45 to DB-9 adapter. The console

(CON) port is located on the top right corner of the port panel.

2. Log in as root. There is no password. If the software booted before you connected to the console port, you might need

to press the Enter key for the prompt to appear.

3. Start the CLI.

root@% cli

4. Enter configuration mode.

root> configure

5. Add a password to the root administration user account.

[edit]

root@# set system root-authentication plain-text-password

New password: password

Retype new password: password

6. (Optional) Configure the name of the switch. If the name includes spaces, enclose the name in quotation marks (“ ”).

[edit]

root@# set system host-name host-name

7. Configure the IP address and prefix length for the switch management interface.

[edit]

root@# set interfaces re0:mgmt-0 unit 0 family inet address address/prefix-length

CAUTION: Although the CLI permits you to configure two management Ethernet interfaces within

the same subnet, only one interface is usable and supported.

NOTE: On the QFX5220-128C, the management port re0:mgmt-0 is the bottom RJ-45 port on the right side

of the port panel and is labeled MGMT.

8. Create the mgmt_junos routing instance.

[edit]

root@# set routing-instances mgmt_junos

9. Configure the static routes to remote prefixes with access to the management port.

[edit]

root@# set routing-options static route remote-prefix next-hop destination-ip

10. Enable the management instance.

[edit]

root@# set system management-instance

11. Enable telnet service.

[edit]

root@# set system services telnet

NOTE: When Telnet is enabled, you cannot log in to a QFX5220 switch through Telnet using root credentials.

Root login is allowed only for SSH access.

12. Enable SSH service for root login.

[edit]

root@# set system services SSH

13. Commit the configuration to activate it on the switch.

[edit]

root@# commit

QFX5220-128C Safety Warning Summary

This is a summary of safety warnings. For a complete list of warnings, including translations, see the QFX5220 hardware

documentation at https://www.juniper.net/documentation/product/en_US/qfx5220.

WARNING: Failure to observe these safety warnings can result in personal injury or death.

•Permit only trained and qualified personnel to install or replace switch components

•Perform only the procedures described in this quick start and the QFX5220 documentation. Other services must be

performed only by authorized service personnel.

•Before installing the switch, read the planning instructions in the QFX5220 documentation to make sure that the site

meets power, environmental, and clearance requirements for the switch.

•Before connecting the switch to a power source, read the installation instructions in the QFX5220 documentation.

•The QFX5220-128C weighs approximately 76 lbs (34.5 kg.) We recommend using a mechanical lift for installations

above 60 inches (152.4 cm). Manually installing the QFX5220-128C in a rack or cabinet at a height above 60 in. (152.4

cm) requires two people to lift the switch and a third person to install the mounting screws. To prevent injury, keep your

back straight and lift with your legs, not your back.

•If the rack or cabinet has stabilizing devices, install them in the rack before mounting or servicing the switch in the rack

or cabinet.

•Before installing or after removing an electrical component, always place it component-side up on a flat antistatic mat

or in an antistatic bag.

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