Juniper EX9200

The EX9200 campus and data center core Ethernet switches share a number of architectural elements. The Routing Engines employed by these switches run Junos OS, which processes all Layer 2 and Layer 3 protocols, while the Switch Fabric modules manage the chassis and provide switching functionality for data traffic coming from line cards.

The EX9200 line cards, which are common across all EX9200 platforms, include Packet Forwarding Engines (PFEs) that process network traffic, as well as a line-card processor that provides scalable local control.

In the data center, the EX9200 architecture is designed for very large deployments, with no head-of-line blocking, a single tier low latency switch fabric, efficient multicast replication handling, and deep buffering to ensure performance at scale. The EX9200 chassis midplane distributes the control and management signals over independent paths to the various system components and distributes power throughout the system. Data plane signals pass directly from the EX9200 line cards to the EX9200 Switch Fabric modules via a unique pass-through connector system that provides unparalleled signal quality for future generations of fabric ASICs.

To maintain uninterrupted operation, the EX9200’s fan trays cool the line cards, Routing Engine, and Switch Fabric modules with redundant, variable speed fans. In addition, the EX9200 power supplies convert building power to the internal voltage required by the system.

All EX9200 components are hot-swappable, and all central functions are available in redundant configurations, providing high operational availability by allowing continuous system operation during maintenance or repairs.