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Related Documentation
- Connecting and Configuring an EX9200 Switch (CLI Procedure)
- Field-Replaceable Units in an EX9200 Switch
- Line Card Model and Version Compatibility in an EX9200 Switch
EX9204 Switch Hardware Overview
Juniper Networks EX9204 Ethernet Switches provide high performance, scalable connectivity, and carrier-class reliability for high-density environments such as campus-aggregation and data-center networks. The EX9204 switch has a throughput of up to 1.6 terabits per second (Tbps) or up to 240 gigabits per second (Gbps) per slot full duplex. The EX9204 switch is a modular system that provides high availability and redundancy for all major hardware components, including Routing Engine modules (RE modules), Switch Fabric modules (SF modules), fan tray (with three redundant fans), and power supplies.
You can manage EX9204 switches by using the same interfaces that you use for managing other devices running the Juniper Networks Junos operating system (Junos OS)—the CLI, the Network and Security Manager (NSM), and Junos Space.
Software
Juniper Networks EX Series Ethernet Switches run Junos OS, which provides Layer 2 and Layer 3 switching, routing, and security services.
Chassis Physical Specifications
The EX9204 switch is five rack units (5 U) in size. Nine EX9204 switches can fit in a standard 48 U rack. Each EX9204 switch is designed to optimize rack space and cabling. See Figure 3, Figure 4, and Figure 5.
Figure 3: Front View of an EX9204 Switch
Figure 4: Rear View of an EX9204 Switch with AC Power Supplies
Figure 5: Rear View of an EX9204 Switch with DC Power Supplies
Host Subsystem
Switching and routing functionality, system management, and system control functions of an EX9204 switch are performed by the host subsystem. The host subsystem consists of a Routing Engine functioning together with a Switch Fabric.
An EX9204 is a 4-slot chassis that provides two dedicated slots—labeled 1 and 2—for line cards, one dedicated slot—labeled 0—for a host subsystem, and one multifunction slot—labeled 1|0—for either a line card or a host subsystem.
You can install either one or two host subsystems in an EX9204 switch. A base-configuration EX9204 switch has one host subsystem. A redundant-configuration EX9204 switch has a second host subsystem. For more information, see EX9204 Switch Configurations.
Line Cards
Line cards are field-replaceable units (FRUs) that you can install in the line card slots and in the multifunctional slot on the front of the switch chassis. All line cards are hot-removable and hot-insertable.
You can install up to three line cards in an EX9204 switch. Each EX9204 switch has two dedicated line card slots—labeled 1 and 2—and a multifunction slot—labeled 1|0—that you can use for either a line card or a host subsystem.
The line cards in EX9204 switches combine a Packet Forwarding Engine and Ethernet interfaces in a single assembly. Table 15 lists the line cards available for EX9204 switches.
Table 15: Line Cards Available for EX9204 Switches
Model | Description | Additional Information |
|---|---|---|
EX9200-2C-8XS | A line card with two 100-Gigabit Ethernet ports and eight 10-Gigabit Ethernet ports | |
EX9200-4QS | A line card with four 40-Gigabit Ethernet ports | EX9200-4QS Line Card |
EX9200-6QS | A line card with six 40-Gigabit Ethernet ports and 24 10-Gigabit Ethernet ports | |
EX9200-MPC | A modular line card that accepts any of the following MICs:
| EX9200-MPC Line Card |
EX9200-12QS | A line card with six 40-Gigabit Ethernet rate-selectable ports, each of which can house transceivers | |
EX9200-32XS | A line card with 32 10-Gigabit Ethernet ports | |
EX9200-40T | A line card with 40 10/100/1000BASE-T ports that support RJ-45 connectors | EX9200-40T Line Card |
EX9200-40F | A line card with 40 1-Gigabit Ethernet ports | EX9200-40F Line Card |
EX9200-40F-M | A line card with 40 1-Gigabit Ethernet ports with Media Access Control Security (MACsec) capability | EX9200-40F-M Line Card |
EX9200-40XS | A line card with 40 10-Gigabit Ethernet ports with Media Access Control Security (MACsec) capability, each of which can house 10-gigabit small form-factor pluggable plus (SFP+) transceivers |
Cooling System
The cooling system in an EX9204 switch is a field-replaceable unit (FRU). It consists of a hot-removable and hot-insertable fan tray. The fan tray contains three fans. The fan tray installs vertically on the right back of the chassis and provides side-to-side chassis cooling. See Cooling System and Airflow in an EX9204 Switch.
Power Supplies
Power supplies for the EX9204 switch are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs. Each EX9204 switch chassis can hold up to four AC or up to two DC power supplies.
Table 16 shows the details of the power supplies available for EX9204 switches.
Table 16: Power Supplies Supported on EX9204 Switches
Power Supply | Input Voltage | Output Power |
|---|---|---|
2520 W AC | Low-voltage line (100–120 VAC) | 1027 W |
High-voltage line (200–240 VAC) | 1590 W | |
2400 W DC | –40 VDC through –70 VDC | 2400 W to 2600 W |
A base-configuration EX9204 switch ships with two low-line (100–120 VAC) AC power supplies or one high-line (200–240 VAC) AC power supply. An AC-powered, redundant-configuration EX9204 switch ships with four low-line (100–120 VAC) or two high-line (200–240 VAC) AC power supplies. See AC Power Supply in an EX9204 Switch.
A DC-powered, redundant-configuration EX9204 switch ships with two DC power supplies. See DC Power Supply in an EX9204 Switch.
 | Caution: Do not mix AC and DC power supplies in the same chassis. |
Related Documentation
- Connecting and Configuring an EX9200 Switch (CLI Procedure)
- Field-Replaceable Units in an EX9200 Switch
- Line Card Model and Version Compatibility in an EX9200 Switch
