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Planning the Virtual Chassis

Before installing EX4200 switches in a Virtual Chassis configuration, you must consider

the following factors:

■ The number of switches in the Virtual Chassis and location—You can interconnect

two to ten EX4200 switches to form a Virtual Chassis. You can stack the switches

in a single rack or install them on multiple racks. For information on the size

and strength of racks, see “Rack Requirements for EX3200 and EX4200 Switches”

on page 87. See “Chassis Physical Specifications for EX3200 and EX4200

Switches” on page 7 for the dimensions and weights of the switch models.

■ Cabling requirements for Virtual Chassis—You can interconnect the EX4200

switches in a Virtual Chassis configuration through Virtual Chassis ports (VCPs)

using the 0.5 meter long VCP cable supplied in the package. Depending on the

Virtual Chassis configurations you have, you might need cables of different

lengths. If you need longer cables, you can purchase them separately. The

maximum length allowed for a Virtual Chassis cable is 5 meters. To connect

switches that are installed farther apart, you must configure the uplink module

ports as Virtual Chassis ports and use them to interconnect the switches.

NOTE: If you order Virtual Chassis cables separately, you should reuse the locking

covers provided with the original cable or order Virtual Chassis cable locking covers

also separately.

■ Clearance on the rear of the switch—You must have access to the rear of the

switch if you plan to interconnect switches to form a Virtual Chassis.

■ Power supply—You must plan the installation site to meet the power requirements

of the EX Series switches in a Virtual Chassis. The input power requirements

vary depending on the number of Power over Ethernet (PoE) ports in a switch.

See “Power Supply in EX3200 and EX4200 Switches” on page 26 for the power

requirements for the various configurations of PoE ports in EX4200 switches.

Related Topics ■ Understanding Virtual Chassis Components

■ Virtual Chassis Ports Connector Pinout Information for EX4200 Switches on

page 74

■ Understanding Virtual Chassis Hardware Configuration on an EX4200 Switch on

page 101

■ Virtual Chassis Cabling Configuration Examples for EX4200 Switches on page 103

■ Clearance Requirements for Airflow and Hardware Maintenance for EX3200 and

EX4200 Switches on page 91

102 ■ Planning the Virtual Chassis

Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches

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Juniper Networks EX3200 Bedienungsanleitung Seite 128