The MX304 Universal Routing Platform features the following components. Routing Engine Dual redundant Routing Engines (REs) on the MX304 run Junos OS, where they manage all routing protocol processes,
router interface control, and control plane functions such as chassis operations, system management, and user access to the
router. These processes run on top of a kernel that interacts with the Packet Forwarding Engine (PFE) on Modular Interface Cards
(MICs) via dedicated high-bandwidth management channels, providing a clean separation between the control and forwarding planes.
Modular Interface Cards Powered by the sixth-generation programmable Trio chipset, the MX304 offers unprecedented bandwidth in a
dense form factor with MICs providing broad routing, switching, inline services, subscriber management, hierarchical quality of
service (HQoS), and a host of other features. The MICs allow users to mix-and-match 10GbE, 25GbE, 40GbE, 50GbE, 100GbE, and 400GbE
interfaces to flexibly and efficiently address their unique connectivity requirements.