EX9204-CHAS-S Juniper EX9204 4-slot Chassis
Juniper EX9204-CHAS-S 4-Slot Switch Chassis
Compact and Scalable Modular Core for Enterprise Campus Networks
The Juniper EX9204-CHAS-S is a compact yet powerful modular Ethernet switch chassis designed for high-performance campus core and data center aggregation networks. Developed by Juniper Networks, this 4-slot chassis delivers scalable switching capacity, programmable network services, and advanced virtualization capabilities in a space-efficient 6RU form factor.
Built as part of the EX9200 Series, the EX9204-CHAS-S supports a wide range of high-performance line cards that provide 1GbE, 10GbE, 40GbE, and 100GbE connectivity, enabling organizations to build flexible and scalable network architectures. With up to 1.6 Tbps switching capacity and 1.2 billion packets per second forwarding performance, the chassis provides the throughput required for modern high-bandwidth enterprise and data center environments.
At the core of the platform is the Juniper One programmable ASIC architecture, which allows new networking features and protocols to be introduced through software updates. This programmability helps organizations extend the lifespan of their infrastructure while adapting to evolving network requirements.
The EX9204 chassis supports redundant Routing Engines and Switch Fabric modules, ensuring uninterrupted operation and high availability. Combined with Graceful Routing Engine Switchover (GRES), the system maintains control-plane stability during maintenance or failover events, minimizing network disruption.
Designed for modern network virtualization, the EX9204-CHAS-S fully supports EVPN-VXLAN fabrics, enabling scalable and standards-based network segmentation across campus and data center environments. It also supports Junos Fusion Enterprise, allowing the chassis to manage multiple satellite access switches as a single logical system, simplifying operations and network management.
With its compact design, programmable architecture, and high-density connectivity support, the Juniper EX9204-CHAS-S provides a scalable switching foundation for enterprise campus cores, high-performance aggregation layers, and virtualization-ready network infrastructures.
Product Specifications – Juniper EX9204-CHAS-S Modular Ethernet Switch Chassis
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| Specification | Details |
|---|---|
| Manufacturer | Juniper Networks |
| Product Name | Juniper EX9204-CHAS-S |
| Product Type | Modular Ethernet Switch Chassis |
| Product Series | Juniper EX9200 Series |
| Part Number | EX9204-CHAS-S |
| Form Factor | 6RU rack-mount chassis |
| Total Slots | 4 slots |
| Line Card Slots | 2 dedicated slots for line cards |
| Fabric / Routing Engine Slots | 2 slots for Switch Fabric and Routing Engine modules |
| Switching Capacity | Up to 1.6 Tbps |
| Packet Forwarding Rate | Up to 1.2 billion packets per second (Bpps) |
| ASIC Architecture | Juniper One programmable chipset |
| Supported Interfaces | 1GbE, 10GbE, 40GbE, and 100GbE via line cards |
| Network Virtualization | EVPN-VXLAN support |
| Campus Fabric Support | Yes |
| Operating System | Junos OS |
| Power Supply Support | Up to 3 power supply modules |
| Power Supply Types | AC or DC |
| Power Supply Design | Hot-swappable |
| Cooling System | Redundant fan modules |
| Airflow | Side-to-side airflow |
| High Availability | Redundant Routing Engines and Switch Fabric modules |
| HA Features | Graceful Routing Engine Switchover (GRES) |
| Management | Junos CLI, SNMP, Junos telemetry |
| Automation | Junos automation and APIs |
| Deployment | Campus core, data center aggregation layer |
| Network Architecture | Junos Fusion Enterprise support |
| Typical Use Cases | Enterprise campus cores, high-density aggregation, virtualization-ready networks |
FAQs:
Q1. How many interface slots are available for line cards?
In the EX9204, two slots are dedicated to the Switch Fabric/Routing Engine (SF/RE) modules. This leaves the remaining two slots available for Ethernet line cards.
Q2. What are the cooling requirements for the EX9204?
The chassis uses a side-to-side airflow pattern. It is critical to ensure that the rack has sufficient clearance on both sides to allow for proper intake and exhaust to prevent overheating.
Q3. Does this chassis support 100G interfaces?
Yes. When equipped with the appropriate line cards and the EX9200-SF2 or SF3 Switch Fabric, the EX9204 supports high-density 100GbE QSFP28 connectivity.
Q4. Is this part number a complete switch?
No. The EX9204-CHAS-S is the base chassis. To have a functional switch, you must add at least one Switch Fabric/Routing Engine, one power supply, a fan tray, and the desired line cards.
Q5. Can this chassis be used in a Virtual Chassis configuration?
Yes. The EX9200 series supports Virtual Chassis technology, allowing multiple modular chassis to be managed as a single logical entity to simplify operations.
