Ptx10003 System Architecture; Ptx10003 System Software - Juniper PTX10003-80C Hardware Manual

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Figure 4: PTX10003-80C FRU Panel
For more information about the components on the FRU panel, see "PTX10003 Field-Replaceable Units
Panel" on page 36.

PTX10003 System Architecture

Using Juniper Networks custom ExpressPlus silicon, the PTX10003 system architecture cleanly separates
control operations from packet forwarding operations. This design eliminates processing and traffic
bottlenecks, permitting the PTX10003 to achieve high performance.
Control operations are performed by the Routing Engine, which runs Junos OS Evolved. The Routing
Engine handles routing protocols, traffic engineering, policy, policing, monitoring, and configuration
management. Junos OS Evolved is pre-installed on the PTX10003 internal solid-state drives (SSDs).
Forwarding operations are performed by the Packet Forwarding Engines (PFE) to deliver inline MACsec
on all ports and high density high density 10 GbE, 40 GbE, 100 GbE, 200 GbE, and 400 GbE.

PTX10003 System Software

The PTX10003 runs Junos OS Evolved, which provides Layer 2 and Layer 3 switching, routing, and security
services. Junos OS Evolved runs natively on Linux, giving it direct access to all the Linux utilities and
operations. It is designed to be modular, allowing for upgrades to be done on a component-by-component
basis without a system reboot. Only those components changed are restarted. Junos OS Evolved is easily
portable and minimal work is required to make it work on any platform. It has the same CLI user interface,
the same code base for applications and features, and the same management and automation tools as
Junos OS. However, the Junos OS Evolved infrastructure is entirely modernized, giving you the high
availability, portability, faster innovation, and simplified upgrades you need. Junos OS Evolved software
is installed on the PTX10003 200 GB internal NAND solid state flash drive.
For information about which features are supported on PTX Series devices, see Feature Explorer.