Juniper EX9200-RE-BLANK Switches

The Routing Engine module (RE module) is an Intel-based platform that runs Juniper Networks Junos operating system (Junos OS). Software processes that run on the RE module maintain the routing tables, manage the routing protocols used on the switch, control the router interfaces and some of the chassis components, and provide the interface for system management and user access to the switch. In an EX9204, EX9208, or EX9214 switch, you can install one or two RE modules in the Switch Fabric modules (SF modules) that are installed in slots on the front panel of the switch. If you install two RE modules, one functions as the primary and the other functions as the backup. If the primary RE module fails or is removed and the backup is configured appropriately, the backup takes over as the primary. The backup RE module is hot-insertable and hot-removable, whereas the primary RE module is only hot-insertable. See Figure 1 and Figure 2. A USB port on the RE module accepts a USB memory card that loads the Junos OS.