EX4200 System Overview

 

EX4200 Switches Hardware Overview

Juniper Networks EX Series Ethernet Switches provide scalable connectivity for the enterprise market, including branch offices, campus locations, and data centers. The switches run the Juniper Networks Junos operating system (Junos OS), which provides Layer 2 and Layer 3 switching, routing, and security services. The same Junos OS code base that runs on EX Series switches also runs on all Juniper Networks M Series, MX Series, and T Series routers and SRX Series devices.

Benefits of the EX4200 Switch

Compact solution—The EX4200 switch is a modular single rack unit device that is an apt solution for crowded wiring closets and access switch locations such as data center, campus, and branch office environments. It provides carrier-class reliability of modular systems with the economics and flexibility of stackable platforms.

Support for Virtual Chassis—EX4200 switches support Virtual Chassis technology. You can interconnect up to 10 EX4200 switches to form a Virtual Chassis and manage and operate them as a single network entity.

EX4200 Switches

Juniper Networks EX4200 Ethernet Switches provide connectivity for medium- and high-density environments and scalability for growing networks. These switches can be deployed wherever you need high density of Gigabit Ethernet ports (24 to 480 ports) or redundancy. Typically, EX4200 switches are used in large branch offices, campus wiring closets, and data centers where they can be positioned as the top device in a rack to provide connectivity for all the devices in the rack.

You can connect individual EX4200 switches together to form one unit and manage the unit as a single chassis, called a Virtual Chassis. You can add more member switches to the Virtual Chassis as needed, up to a total of 10 members.

EX4200 switches are available in models with 24 or 48 ports with either all ports equipped for Power over Ethernet (PoE/PoE+) or only 8 ports equipped for PoE. All models provide ports that have 10/100/1000Base-T Gigabit Ethernet connectors and optional 1-gigabit small form-factor pluggable (SFP) transceivers, 10-gigabit small form-factor pluggable (SFP+) transceivers, or 10-gigabit small form-factor pluggable (XFP) transceivers for use with fiber connections.

Additionally, a 24-port model provides 100Base-FX/1000Base-X SFP ports. This model is typically used as a small distribution switch.

All EX4200 switches have dedicated 64-Gbps Virtual Chassis ports (VCPs) that enable you to connect the switches to each other. You can also use optional uplink module ports to connect members of a Virtual Chassis across multiple wiring closets.

To provide carrier-class reliability, EX4200 switches include:

  • Dual redundant power supplies that are field-replaceable and hot-swappable. An optional additional connection to an external power source is also available.

  • A field-replaceable fan tray with three fans. The switch remains operational if a single fan fails.

  • Redundant Routing Engines in a Virtual Chassis configuration. This redundancy enables graceful Routing Engine switchover (GRES) and nonstop active routing (NSR).

  • Junos OS with its modular design that enables failed system processes to gracefully restart.

EX4200 switches have these features:

  • Run under Junos OS for EX Series switches

  • Have options of 24-port and 48-port models

  • Have options of full (all ports) PoE/PoE+ capability or partial (8 ports) PoE capability

  • Have optional uplink modules that provide connection to distribution switches

Uplink Modules

Optional uplink modules are available for all EX4200 switches. Uplink modules provide two ports for installing 10-gigabit small form-factor pluggable (XFP) transceivers, four ports for installing 1-gigabit small form-factor pluggable (SFP) transceivers, two ports for installing 10-gigabit small form-factor pluggable (SFP+) transceivers. You can use XFP, SFP, or SFP+ ports to connect an access switch to a distribution switch or to interconnect member switches of a Virtual Chassis across multiple wiring closets.

EX4200 switches also support an SFP+ Media Access Control Security (MACsec) uplink module starting in Junos OS Release 13.2X50-D10. The SFP+ MACsec module provides four MACsec-capable ports and can be configured to support up to four 1-gigabit SFP transceivers or up to two 10-gigabit small form-factor pluggable (SFP+) transceivers.

Power over Ethernet Ports

PoE ports provide electrical current to devices through the network cables so that separate power cords for devices such as IP phones, wireless access points, and security cameras are unnecessary.

PoE was first defined in the IEEE 802.3af standard. Starting with Junos OS Release 11.1, EX4200 switches support enhanced PoE, a Juniper Networks extension to the IEEE 302.3af PoE standard that increases the amount of power per PoE port. A later standard, IEEE 802.3at, defined PoE+. An IEEE 802.3af powered device operates normally when connected to an IEEE 802.3at (PoE+) power sourcing equipment.

EX4200 switches with an AC power supply installed have options of full (all 24 or 48 ports) PoE/PoE+ capability or partial (8 ports) PoE capability. EX4200 switches with a DC power supply installed do not provide PoE. For more information, see EX4200 Switch Models.

Full PoE/PoE+ models are primarily used in IP telephony environments. Partial PoE models are used in environments where, for example, only a few ports for wireless access points or security cameras are required.

EX4200 Switch Models

The EX4200 switch is available with 24 or 48 ports and with partial or full Power over Ethernet (PoE) capability. EX4200 switches with a DC power supply installed do not provide PoE.

Note

This topic uses the term PoE to refer to both PoE and PoE+ unless there is a need to distinguish between the two.

Table 1 lists the EX4200 switch models.

Table 1: EX4200 Switch Models

Model

Number and Type of Ports

Number of PoE-enabled Ports

Fan Tray

Power Supply (Minimum)

Junos OS Release Required

EX4200-24T

24 Gigabit Ethernet

First 8 ports

One fan tray with three fans.

320 W

9.0R2 or later

EX4200-24T-DC

24 Gigabit Ethernet

One fan tray with three fans.

190 W

9.0R2 or later

EX4200-24P

24 Gigabit Ethernet

All 24 ports

One fan tray with three fans.

600 W

9.0R2 or later

EX4200-24PX

24 Gigabit Ethernet

All 24 ports (PoE+)

One fan tray with three fans.

930 W

11.2R1 or later

EX4200-24F

24 small form-factor pluggable (SFP)

One fan tray with three fans.

320 W

9.0R2 or later

EX4200-24F-S

24 SFP

Fan tray for this model is not shipped by default; you must order it separately.

Power supplies for this model are not shipped by default; you must order them separately.

12.3R4 or later

EX4200-24F-DC

24 SFP

One fan tray with three fans.

190 W

9.0R2 or later

EX4200-48T

48 Gigabit Ethernet

First 8 ports

One fan tray with three fans.

320 W

9.0R2 or later

EX4200-48T-S

48 Gigabit Ethernet

First 8 ports

Fan tray for this model is not shipped by default; you must order it separately.

Power supplies for this model are not shipped by default; you must order them separately.

12.3R4 or later

EX4200-48T-DC

48 Gigabit Ethernet

One fan tray with three fans.

190 W

9.0R2 or later

EX4200-48P

48 Gigabit Ethernet

All 48 ports

One fan tray with three fans.

930 W

9.0R2 or later

EX4200-48PX

48 Gigabit Ethernet

All 48 ports (PoE+)

One fan tray with three fans.

930 W

11.2R1 or later

Caution

Mixing different types (AC and DC) of power supplies in the same chassis is not supported.

EX4200 Switch Hardware and CLI Terminology Mapping

This topic describes the hardware terms used in EX4200 switch documentation and the corresponding terms used in the Junos OS CLI. See Table 2.

Table 2: CLI Equivalents of Terms Used in Documentation for EX4200 Switches

Hardware Item (CLI)

Description (CLI)

Value (CLI)

Item in Documentation

Additional Information

Chassis

One of the following:

  • EX4200-24T

  • EX4200-24P

  • EX4200-24PX

  • EX4200-24F

  • EX4200-48T

  • EX4200-48P

  • EX4200-48PX

Switch chassis

Chassis Physical Specifications for EX4200 Switches

Routing Engine (n)

One of the following:

  • EX4200-24T, 8 PoE

  • EX4200-24P, 24 PoE

  • EX4200-24PX, 24 PoE+

  • EX4200-24F

  • EX4200-48T, 8 PoE

  • EX4200-48P, 24 PoE

  • EX4200-48PX, 48 PoE+

n is a value in the range of 0–1. The value corresponds to the slot number.

Routing Engine

FPC (n)

On EX4200 standalone switches:

Abbreviated name of the Flexible PIC Concentrator (FPC)

One of the following:

  • EX4200-24T

  • EX4200-24P

  • EX4200-24PX

  • EX4200-24F

  • EX4200-48T

  • EX4200-48P

  • EX4200-48PX

Value of n is always 0.

The switch does not have actual FPCs. In this case, the FPC refers to the switch itself.

Understanding Interface Naming Conventions

On EX4200 Virtual Chassis:

  • Member ID of the switch within the Virtual Chassis

n is a value in the range of 0–9.

In this case, the FPC number refers to the member ID assigned to the switch.

Understanding Virtual Chassis Components

PIC (n)

Abbreviated name of the Physical Interface Card (PIC).

n is a value in the range of 0–1.

The switch does not have actual PIC devices; see entries for PIC 0 through PIC 1 for the equivalent item on the switch.

Understanding Interface Naming Conventions

 

One of the following:

  • 24x 10/100/1000 Base-T

  • 24x 100 Base-FX/1000 Base-X

  • 48x 10/100/1000 Base-T

PIC 0

Built-in network ports on the front panel of the switch

Front Panel of an EX4200 Switch

 

One of the following:

  • 2x 10GE SFP+

  • 4x GE SFP

  • 2x 10GE XFP

PIC 1

Uplink module installed on the front panel of the switch

Uplink Modules in EX4200 Switches

Xcvr (n)

Abbreviated name of the transceiver

n is a value equivalent to the number of the port in which the transceiver is installed.

Optical transceivers

Pluggable Transceivers Supported on EX4200 Switches

Power supply (n)

One of the following:

  • PS 320W AC

  • PS 600W AC

  • PS 930W AC

  • PS 190W DC

n is a value in the range of 0–1. The value corresponds to the power supply slot number.

AC or DC power supply

Power Supply in EX4200 Switches

Fan tray

Fan tray

Fan tray

EX4200 Cooling System

Chassis Physical Specifications for EX4200 Switches

The EX4200 switch chassis is a rigid sheet-metal structure that houses the hardware components. Table 3 summarizes the physical specifications of the EX4200 switch chassis.

Table 3: Physical Specifications of the Switch Chassis

Description

Value

Chassis height

1.75 in. (4.45 cm)

Chassis width

  • 17.25 in. (43.82 cm)

  • 19 in. (48.2 cm) with mounting brackets attached

Chassis depth

  • Without power supply installed—17 in. (43.18 cm)

  • With power supply installed:

    • 320 W AC power supply or 190 W DC power supply installed—17 in. (43.18 cm)

    • 600 W or 930 W AC power supply installed—19.25 in. (48.9 cm)

Weight

  • 320 W AC power supply: 2.5 lb (1.1 kg)

  • 600 W and 930 W AC power supplies: 3.1 lb (1.4 kg)

  • 190 W DC power supply: 2.5 lb (1.1 kg)

Note

The weight of an EX4200 switch with one power supply installed is between 16–18 lb (7.2–8.2 kg).

Field-Replaceable Units in EX4200 Switches

Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in the switch are:

  • Power supply

  • Fan tray

  • Uplink module

  • Transceivers

Note

Uplink modules are not part of the standard package and must be ordered separately.

The fan tray, uplink module, and transceivers are hot-removable and hot-insertable: You can remove and replace them without powering off the switch or disrupting switch functions.

Note

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.