Juniper EX4550 Quick Start

EX4550 Switch Quick Start
See the complete EX Series documentation at http://www.juniper.net/techpubs/ .
To install and perform initial configuration of a Juniper Networks EX4550 Ethernet
Switch, you need:
Two mounting brackets and eight mounting screws (provided)
Screws to secure the chassis to the rack or cabinet (not provided)
Phillips (+) screwdriver, number 2 (not provided)
For AC systems—an AC power supply and an AC power cord with a plug appropriate
for your geographical location—both provided
For DC systems—A DC power supply (provided) and DC power source cables (14–16
AWG—not provided) with ring lugs (Molex 190700069 or equivalent—not provided)
attached
For grounding the switch—a grounding cable (minimum 14 AWG (2 mm²), minimum
90°C wire), a grounding lug (Panduit LCD6-14BH-L or equivalent), a pair of
10-32x.25-in. screws, and a pair of flat washers—none provided
Ethernet cable with an RJ-45 connector attached (provided)
RJ-45 to DB-9 serial port adapter (provided)
Management host, such as a PC, with an Ethernet port (not provided)
Part 1: Mount the Switch on Two Posts of a Rack
Two people are required for this procedure.
1. Place the rack or cabinet 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 weight order.
2. Position the mounting brackets along the side panels of the chassis aligning them
with the LCD panel side, the power supply side, or with the center of the side panels
depending on how do you want to mount the switch.
3. Attach the brackets to the chassis with the mounting screws. Tighten the screws.
NOTE: The switch with one power supply installed in it weighs approximately 19.4 lb (8.8
kg). Installing the switch requires one person to lift it and a second person to secure it to
the rack.
4. 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
the chassis is level.
5. Have the second person secure the switch to the rack by using the appropriate
screws. Tighten the screws.
Part 2: Connect Power to the Switch
NOTE: Grounding is required for DC systems and recommended for AC systems. An
AC-powered switch gets additional grounding when you plug the power supply in the
switch into a grounded AC power outlet using the power cord.
To connect power to an AC-powered switch:
1. Insert the coupler end of the power cord into the AC power cord inlet on the AC
power supply faceplate.
2. Push the power cord retainer onto the power cord.
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3. If the AC power source outlet has a power switch, set it to the OFF (0) position.
4. Insert the power cord plug into the power source outlet.
5. If the AC power source outlet has a power switch, set it to the ON (|) position.
6. Verify that the AC and the DC LEDs are lit green and on steadily.
To connect power to a DC-powered switch:
The DC power supply has four 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.
1. Connect one end of the grounding cable to a proper earth ground.
CAUTION: A licensed electrician must attach the lug to the grounding cable.
2. Secure the grounding lug over the earthing terminal (located on the left side of the
chassis) with washers and screws using the Phillips (+) screwdriver, number 2.
3. Remove the terminal block cover. The terminal block cover is a piece of clear plastic
that snaps into place over the terminal block.
4. Remove the screws on the terminals using the screwdriver. Save the screws.
5. Connect each power supply to the power
sources. Secure power source cables to the
power supplies by screwing the ring lugs
attached to the cables to the appropriate
terminals by using the screw 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 using the screwdriver. Do not
overtighten—apply between 5 in-lb (0.56 Nm) and 6 in-lb (0.68 Nm) of torque to
the screws.