Juniper EX4650 Series Manual de usuario

Quick Start Guide

EX4650 Switch Quick Start Guide

IN THIS GUIDE

System Overview | 1

Tools and Parts Required for Installation | 2

Part 1: Install a Power Supply | 3

Part 2: Install a Fan Module | 4

Part 3: Mount the Switch on Four Posts of a Rack | 5

Part 4: Connect Power to the Switch | 7

Part 5: Perform Initial Configuration | 10

Guidelines for Using EX4650 RMA Replacement Chassis | 12

Safety Warnings Summary | 12

Contacting Juniper Networks | 13

System Overview

The EX4650 line of Ethernet switches delivers high scale, high availability, and high performance for campus distribution

deployments. Featuring 48 wire-speed 10-Gigabit Ethernet/25 Gigabit Ethernet small form-factor pluggable and pluggable

plus transceiver (SFP/SFP+/SFP28) ports and 8 wire-speed 40 Gigabit Ethernet/100 Gigabit Ethernet quad SFP+ transceiver

(QSFP+/QSP28) ports in a compact platform, the EX4650 provides the flexibility to support mixed environments. The

EX4650 switches run standard Junos operating system (OS). QFX5120-48Y switches also support virtual chassis technology.

You can interconnect up to two EX4650-48Y switches in a EX4650-48Y virtual chassis.

•The EX4650-48Y switch offers 48 small-form factor pluggable (SFP+) ports that operate at 1-Gbps, 10-Gbps, and

25-Gbps speeds along with 8 quad small form-factor pluggable (QSFP28) ports that operate at 40-Gbps (with QSFP+

transceivers) and 100-Gbps speeds (with QSFP28 transceivers).

NOTE: By default, the EX4650-48Y switch offers 10-Gbps speed. You need to configure to set 1-Gbps and

25-Gbps speeds.

•Eight 100-Gigabit Ethernet ports that can operate at 40-Gbps or 100-Gbps speed and support QSFP+ or QSFP28

transceivers. When these ports operate at 40-Gbps speed, you can configure four 10-Gbps interfaces and connect

breakout cables, increasing the total number of supported 10-Gbps ports to 80. When these ports operate at 100-Gbps

speed, you can configure four 25-Gbps interfaces and connect breakout cables, increasing the total number of supported

25-Gbps ports to 80.

A total of four models are available: two featuring AC power supplies and front-to-back or back-to-front airflow and two

featuring DC power supplies and front-to-back or back-to-front airflow.

Tools and Parts Required for Installation

NOTE: See the complete documentation at https://www.juniper.net/documentation/product/en_US/ex4650.

To mount a Juniper Networks EX4650 Ethernet switch on a rack, you need:

•Two front-mounting brackets and twelve screws to secure the brackets to the chassis—provided

•Two rear-mounting brackets—provided

•Screws to secure the chassis to the rack—not provided

•Phillips (+) screwdriver, number 2—not provided

•Electrostatic discharge (ESD) grounding strap—not provided

•Fan module—preinstalled

To connect the switch to earth ground, you need:

•A grounding cable (minimum 12 AWG (2.5 mm²), minimum 90° C wire, or as permitted by the local code), a grounding

lug (Panduit LCD10-10A-L or equivalent), a pair of 10-32 x .25-in. screws with #10 split-lock washers, and a pair of #10

flat washers—none provided

To connect power to the switch, you need:

•For models that are powered by AC power—An AC power cord with a plug appropriate for your geographical location,

and a power cord retainer

•For models that are powered by DC power—DC power source cables (12 AWG—not provided) with ring lugs (Molex

190700069 or equivalent—not provided) attached

To perform initial configuration of the switch, you need:

•An Ethernet cable with an RJ-45 connector attached—provided

•An RJ-45 to DB-9 serial port adapter—provided

•A management host, such as a PC, with an Ethernet port—not provided

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.

The fan modules and the power supplies in the EX4650 switches are hot-removable and hot-insertable field-replaceable

units (FRUs) installed in the rear panel of the switch. You can remove and replace them without powering off the switch

or disrupting switch functions.

CAUTION:

•AC and DC power supplies in the same chassis.

•Power supplies with different airflow directions in the same chassis.

•Power supplies and fan modules with different airflow airflow directions in the same chassis.

WARNING: Ensure that you understand how to prevent ESD damage. Wrap and fasten one end of

an ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point

on the switch.

NOTE: Power supplies and fan modules must have the same airflow direction. The airflow direction on the

power supplies must match the respective airflow direction on the fan modules.

Part 1: Install a Power Supply

NOTE: Each power supply must be connected to a dedicated power source outlet. The power supply slots are

on the rear panel.

To install a power supply (see Figure 1 and Figure 2):

Figure 1: Installing an AC Power Supply in the EX4650 Switch

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Figure 2: Installing a DC Power Supply in the EX4650 Switch

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1. If the power supply slot has a cover panel on it, loosen the captive screws on the cover panel by using your fingers or

the screwdriver. Hold the screws and gently pull the cover panel outward to remove the cover panel. Save the cover

panel for later use.

2. Without touching the power supply pins, leads, or solder connections, remove the power supply from the bag.

3. Using both hands, place the power supply in the power supply slot on the rear panel of the switch and slide it in until

it is fully seated and the ejector lever fits into place.

Part 2: Install a Fan Module

NOTE: The fan module slots are on the rear panel of the switches.

To install a fan module (see Figure 3).

Figure 3: Installing a Fan Module in the EX4650 Switch

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1. Remove the fan module from its bag.

2. Hold the handle of the fan module with one hand and support the weight of the module with the other hand. Place

the fan module in the fan module slot on the rear panel of the switch and slide it in until it is fully seated.

3. Tighten the screws on the faceplate of the fan module by using a screwdriver.

Part 3: Mount the Switch on Four Posts of a Rack

You can mount an EX4650 switch on four posts of a 19-in. rack or an ETSI rack. This guide describes the procedure to

mount the switch on a 19-in. rack.

Mounting an EX4650 switch requires one person to lift the switch and a second person to install the mounting screws to

secure the switch to the rack.

NOTE: The EX4650-48Y switch with two power supplies and fans installed in it weighs approximately 23.7 lb

(10.75 kg).

1. Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the

building structure.

NOTE: While mounting multiple units on a rack, mount the heaviest unit at the bottom and mount the other

units from the bottom to the top in decreasing order of weight.

2. Place the switch on a flat, stable surface.

3. Position the front-mounting brackets along the side panels of the chassis, aligning them with the front panel.

4. Attach the brackets to the chassis by using the mounting screws. Tighten the screws (see Figure 4).

Figure 4: Attaching Front-Mounting Brackets to the EX4650-48Y Chassis

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5. Position the mounting brackets along the side panels of the chassis aligning them with the front panel side.

6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the mounting bracket

holes with the threaded holes in the rack rail. Align the bottom hole in each mounting bracket with a hole in each rail,

making sure that the chassis is level. See Figure 5.

7. Have a second person secure the switch to the rack by inserting the screws appropriate for your rack through the

bracket and the threaded holes on the rack.

Figure 5: Securing the EX4650-48Y Switch to the Rack

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8. On the rear of the switch chassis, slide the rear-mounting brackets into the front-mounting brackets on either side of

the chassis until the rear-mounting brackets contact the rack rails (see Figure 6).

Figure 6: Connecting the Rear-Mounting Brackets to the EX4650 Switch

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9. Secure the rear-mounting brackets to the rear posts by using the screws appropriate for your rack.

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

on the rear posts of the rack.

Part 4: Connect Power to the Switch

Depending on the model, you can use either AC or DC power supplies. The power supplies install in the slots on the rear

panel.

CAUTION: Do not mix AC and DC power supplies in the same switch.

NOTE: Grounding is required for models that use DC power supplies and recommended for models that use

AC power supplies. An AC-powered switch gets additional grounding when you connect the power supply in

the switch to a grounded AC power source outlet by using the power cord.

Before you connect power to the switch, wrap and fasten one end of an ESD wrist strap around your bare wrist,

and connect the other end of the strap to the ESD point on the switch.

To connect earth ground to a switch:

1. Before you connect power to the switch, wrap and fasten one end of an ESD wrist strap around your bare wrist, and

connect the other end of the strap to the ESD point on the switch.

To connect power to an AC-powered switch (see Figure 7):

Figure 7: Connecting Power to a EX4650 Switch Powered by AC Power Supply

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1. Push the end of the retainer strip into the hole next to the inlet on the power supply faceplate until it snaps into place.

2. Press the tab on the retainer strip to loosen the loop. Slide the loop until you have enough space to insert the power

cord coupler into the inlet.

3. Insert the power cord coupler firmly into the inlet.

4. Slide the loop toward the power supply until it is snug against the base of the coupler.

5. Press the tab on the loop and draw out the loop into a tight circle.

6. 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 switch.

7. Insert the power cord plug into the power source outlet.

8. Verify that the AC and DC LEDs on the power supply are lit green. If the fault LED is lit, remove power from the power

supply, and replace the power supply.

To connect power to a DC-powered EX4650-48Y switch (see Figure 8):

Figure 8: Connecting Power to a EX4650 Switch Powered by DC Power Supply

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The DC power supply has terminals labeled V-, V–, V+, and V+ for connecting DC power source cables labeled positive (+)

and negative (–).

WARNING: Ensure that the input circuit breaker is open so that the cable leads will not become active

while you are connecting DC power.

CAUTION: Ensure that you install the power supply first and then connect DC power source cables,

before closing input breaker ON.

1. Remove the terminal block cover. The terminal block cover is a piece of clear plastic that snaps into place over the

terminal block.

2. Remove the screws on the terminals by using the screwdriver. Save the screws.

3. Connect each power supply to a power source. Secure power source cables to the power supplies by screwing the

ring lugs attached to the cables to the appropriate terminals by using the screws from the terminals.

•Secure the ring lug of the positive (+) DC power source cable to the V+ terminal on the DC power supply.

•Secure the ring lug of the negative (–) DC power source cable to the V– terminal on the DC power supply.

•Tighten the screws on the power supply terminals by using an appropriate screwdriver. Do not overtighten—apply

between 5 lb-in. (0.56 Nm) and 6 lb-in. (0.68 Nm) of torque to the screws.

4. Replace the terminal block cover.

5. Close the input circuit breaker.

6. Verify that the IN OK and the OUT OK LEDs on the power supply are lit green and on steadily. See Figure 9

Figure 9: Connecting Power to a DC-Powered QFX5120-48Y Switch

Part 5: Perform Initial Configuration

1. Before you begin, set the following parameter values in the console server or PC:

•Baud rate—9600

•Flow control—none

•Data—8

•Parity—none

•Stop bits—1

•DCD state—disregard

2. Connect the console port on the rear panel of the switch to a laptop or PC by using the RJ-45 to DB-9 serial port

adapter. The console (CON) port is located on the management panel of the switch.

3. 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.

4. Start the CLI.

root@% cli

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

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