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EX4550 Switches Hardware Overview

Juniper Networks EX4550 Ethernet Switches providehigh-density 10-gigabit ports for aggregation layers and data centertop-of-rack deployments, and provide options for data center optimizedairflow (hot aisle/cold aisle). EX4550 switches have a base port densityof 32 fixed 10-Gigabit SFP+ or 10-Gigabit Ethernet BASE-T (10GBASE-T)ports that you can scale up to 48 ports by installing the optionalexpansion modules. You can configure EX4550 switches in a Virtual Chassis, or in a mixed Virtual Chassis withJuniper Networks EX4200 Ethernet Switches or Juniper Networks EX4500Ethernet Switches or both, in a total of up to 10 members.

You can expand the number of ports on an EX4550 switch by installingup to two optional expansion modules in the module slots on eitherside of the chassis.

The optional modules for an EX4550 switch are:

• 8-port 10-Gigabit SFP+ expansion module—Provideseight ports for eight 1-gigabit small form-factor pluggable (SFP)transceivers or eight 10-gigabit small form-factor pluggable (SFP+)transceivers. You can install a total of eight SFP and SFP+ transceiversin any combination in these eight ports.

• 8-port 10GBASE-T expansion module—Provides eightports for 100-Megabit Ethernet BASE-T, 1-Gigabit Ethernet BASE-T,or 10-Gigabit Ethernet BASE-T RJ-45 connectors.

• 2-port 40-Gigabit QSFP+ expansion module—Providestwo ports for 40-gigabit quad small form-factor pluggable (QSFP+)transceivers.

• 128-Gigabit Virtual Chassis module—Provides twodedicated Virtual Chassis ports (VCPs) for connecting the switch ina Virtual Chassis. You can also connect Virtual Chassis members usingthe SFP+ network ports, SFP+ expansion module ports, 10GBASE-T networkports, 10GBASE-T expansion module ports, and QSFP+ expansion moduleports configured as VCPs.

You can manage EX4550 switches by using the same interfacesthat you use for managing other devices running Juniper Networks Junosoperating system (Junos OS)—the CLI, the J-Web graphicalinterface, and Junos Space.

Benefits of the EX4550 Switch

Compact solution—The EX4550 switch supports up to 48 10-GigabitEthernet ports in a 1 rack unit (1 U) chassis.

Support for Virtual Chassis—EX4550 switches support VirtualChassis technology. You can interconnect up to 10 EX4200 switches,EX4500 switches, or EX4550 switches to form a Virtual Chassis.

Energy efficiency—The 10-Gigabit Ethernet fiber portsconsume less than five watts and the 10-Gigabit Ethernet copper portsconsume less than nine watts, thereby offering a low power solutionfor top-of-rack, end-of-row, and aggregation deployments.

Software

Juniper Networks EX Series Ethernet Switches run Junos OS, whichprovides Layer 2 and Layer 3 switching, routing, and security services.The same Junos OS code base that runs on EX Series switches also runson all Juniper Networks M Series, MX Series, and T Series routers,and SRX Series Services Gateways. For information about installingsoftware for your switch, see Software Installation.

EX4550 Switches First View

EX4550 switches provide connectivity for high-density 10-GigabitEthernet data center top-of-rack, enterprise, and campus aggregationand core deployments. EX4550 switches can be used in large branchoffices, campus wiring closets, and data centers where they can bepositioned as the top device in a rack to provide connectivity forall devices in the rack.

EX4550 switches are available in two base switches—a 32-portSFP+ based switch (EX4550-32F), which provides 32 fixed 10-GigabitSFP+ ports in which you can install 1-gigabit SFP or 10-gigabit SFP+transceivers and a 32-port 10GBASE-T based switch (EX4550-32T), whichprovides 32 fixed 10-Gigabit Ethernet BASE-T ports in which you caninstall 100-Megabit, 1-Gigabit, or 10-Gigabit BASE-T connectors. See EX4550 Switch Models.

EX4550 switches have different airflow directions in the chassis.EX4550 switches provide two module slots, each of which can houseany one of the following optional modules:

• 8-port 10-Gigabit SFP+ expansion module

• 8-port 10GBASE-T expansion module

• 2-port 40-Gigabit QSFP+ expansion module

• 128-Gigabit Virtual Chassis module

Figure 1 shows the frontpanel of an EX4550-32F switch.

Figure 2 shows the frontpanel of an EX4550-32T switch.

Figure 3 shows the rear panelof an EX4550 switch withpower supplies and fan modules installed.

To provide carrier-class reliability, EX4550 switches include:

• Dual redundant, load-sharing power supplies that are hot-insertableand hot-removable field-replaceable units.

• Three fan modules, which are field-replaceable units (FRUs).

• Redundant Routing Engines in a Virtual Chassis configuration.This redundancy enables graceful Routing Engine switchover (GRES).

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

Optional Modules

EX4550switches support four types of optional modules: an 8-port 10-GigabitEthernet SFP+ expansion module, an 8-port 10GBASE-T expansion module,a 2-port 40-Gigabit Ethernet QSFP+ expansion module, and a 128-GigabitVirtual Chassis module. You can install up to two modules, in anycombination of these modules, one in each of the module slots. Thereis one module slot on the front panel and one on the rear panel ofthe switch.

Table 1 shows the modulemodel numbers, names of the optional modules with a short description,and the Junos OS release in which each module was released.

Table 1: Optional Modules in EX4550Switches

Virtual Chassis

You can interconnect the EX4550 switch with EX4200, EX4500,or EX4550 switches to form a Virtual Chassis. You can operate theseinterconnected switches as a single, logical device with a singleIP address.

You can interconnect a maximum of 10 EX4550 switches to forma Virtual Chassis composed exclusively of EX4550 switches. You caninterconnect EX4200 switches or EX4500 switches or both with EX4550switches to form a mixed Virtual Chassis that has a maximum of 10switches. See Understanding EX4200, EX4500, and EX4550 Virtual Chassis Hardware Configurations.

You can use the following ports to connect an EX4550 switchin a Virtual Chassis:

• Dedicated VCPs on the Virtual Chassis module installedin the switch

• SFP+ network ports and SFP+ expansion module ports configuredas VCPs

• 10GBASE-T Ethernet network ports or 10GBASE-T expansionmodule ports configured as VCPs

• QSFP+ expansion module ports configured as VCPs

You can use the 10GBASE-T Ethernet network ports, 10GBASE-Texpansion module ports, and QSFP+ expansion module ports configuredas VCPs to interconnect only EX4550 switches in a Virtual Chassis.These ports cannot be used to connect an EX4550 switch with an EX4200switch or an EX4500 switch in a Virtual Chassis.

Installing the Virtual Chassis module is not mandatory for usingan EX4550 switch in a Virtual Chassis configuration.

For information about understanding and configuring VirtualChassis, see EX2200, EX3300, EX4200, EX4500 and EX4550 Virtual Chassis.

Power Supplies

EX4550 switchessupport AC or DC power supplies with different airflow directions.Power supplies for the EX4550 switch are hot-removable and hot-insertableFRUs. All the EX4550 switch models, except the EX4550-32F-S switchesare shipped with one power supply pre-installed in the rear panelof the switches. EX4550-32F-S switches are not shipped with pre-installedpower supplies; you must order them separately.

You caninstall a second AC or DC power supply in the EX4550 switches. See AC Power Supply in EX4550 Switches and DC Power Supply in EX4550 Switches

Each power supply has a label—AFO—on the faceplate of the powersupply that indicates the direction of airflow. AFO labels indicate front-to-back airflow. See Cooling System and Airflow in an EX4550 Switch.

Do not mix:

• AC and DC power supplies in the same chassis.

• Power supplies with different airflow labels (AFO) in the same chassis.

Fan Modules

Fan modules forthe EX4550 switches are hot-insertable and hot-removable field-replaceableunits (FRUs).

All the EX4550 switchmodels, except the EX4550-32F-S switches are shipped with three fan modules pre-installed in therear panel of the switches. EX4550-32F-S switches are not shipped with pre-installed fanmodules; you must order them separately.

Two variants of fan modules are available, each with a differentairflow direction—back-to-front airflow, indicated by the label AIR OUT (AFO). See Cooling System and Airflow in an EX4550 Switch.

Do not mix fan modules with different airflow labels (AIR OUT (AFO)) inthe same chassis.

Components on the EX4550 Switch

Figure 4 shows the componentson the front panel of an EX4550-32F switch (with the module slot coverpanel installed).

Figure 5 shows the componentson the front panel of an EX4550-32T switch (with the module slot coverpanel installed).

Figure 6 shows the componentson the rear panel of an EX4550 switch (with the module slot coverpanel, an AC power supply, and three fan modules installed).

The protective earthing terminal is located on the left sideof the chassis. See Connect Earth Ground to an EX Series Switch.

EX4550 Switch Models

Table 2 lists the availableEX4550 switches.

Table 2: EX4550Switch Model Number, Shipped Components, and Supported Junos OS Release

The optional modules, the Virtual Chassis cable, the VirtualChassis cable connector retainers, and transceivers are not part ofthe EX4550 switch shipping configuration. If you want to purchaseany of these components, power supplies, or fan modules for yourswitch, you must order them separately.

Identifying EX4550 Switch Models

Purpose

Identify the model number of your EX4550 switch.

Action

Check the value of the FRU Model Numberfield in the Routing Engine section in the output of the show chassis hardware extensive CLI command.

user@switch> show chassis hardwareextensive

Nintendo Switch Virtual Console Game List

The model number of your switch is one of the following:

Switch Virtual Console Games

• EX4550-32F-AFI

• EX4550-32F-AFO

• EX4550-32F-DC-AFI

• EX4550-32F-DC-AFO

• EX4550-32T-AFI

• EX4550-32T-AFO

• EX4550-32T-DC-AFI

• EX4550-32T-DC-AFO

Meaning

• The 32F or 32T in the model number indicates:

  • 32F—The switch has 32 1G/10G SFP+ Ethernet networkports.

  • 32T—The switch has 32 100M/1G/10G BASE-T Ethernetnetwork ports.

• AFI or AFO in the model number indicates:

  • AFI indicates that the switch is shipped with three fanmodules, each bearing an AFI label.

  • AFO indicates that the switch is shipped with three fanmodules, each bearing an AFO label.

  The labels on the fan modules and power supplies indicate thedirection of airflow in the switch. AIR IN (AFI) labels indicate back-to-front airflow, and AIR OUT (AFO) labels indicatefront-to-back airflow.

• The DC in the model number indicates that the switch workson DC power supply. Switches that do not have DC in their model numberswork on AC power supply.

EX4550 Switch Hardware and CLI Terminology Mapping

This topic describes the hardware terms used in EX4550 switchdocumentation and the corresponding terms used in the Junos OS CLI.See Table 3.

Table 3: CLI Equivalents of Terms Usedin the Documentation for EX4550 Switches