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PTX5000 Packet Transport Router Description

The PTX5000 Packet Transport Router provides 10-Gigabit Ethernet, 40-Gigabit Ethernet, and 100-Gigabit Ethernet interfaces for large networks and network applications, such as those supported by ISPs. The packet transport router accommodates up to eight Flexible PIC Concentrators (FPCs), each of which can be configured with a variety of network media types.

The system architecture cleanly separates control operations from packet forwarding operations. This design eliminates processing and traffic bottlenecks, permitting the packet transport router to achieve high performance.

  • Control operations are performed by the host subsystem, which runs the Junos operating system (Junos OS) to handle routing protocols, traffic engineering, policy, policing, monitoring, and configuration management.
  • Forwarding operations are performed by the Packet Forwarding Engines, which consist of hardware, including ASICs, designed by Juniper Networks. The application-specific integrated circuits (ASICs) are a definitive part of the hardware design and enable the packet transport router to achieve data forwarding rates that match current fiber-optic capacity. The PTX5000 Packet Transport Router with FPCs that have four Packet Forwarding Engines provides up to a total of 4800 million packets per second (Mpps) of forwarding. In a PTX5000 Packet Transport Router with FPCs that have eight Packet Forwarding Engines, the forwarding capacity increases to 9600 Mpps.

Figure 1 and Figure 2 illustrate the front and rear of a PTX5000 Packet Transport Router.

Figure 1: Front View of the PTX5000 Packet Transport Router

Front View of the PTX5000 Packet
Transport Router
  1
Front-mounting flange
  6
FPCs and PICs
  2
Craft interface
  7
ESD point
  3
Upper horizontal fan tray
  8
Lower horizontal fan tray
  4
Cable management system
  9
Horizontal air filter
  5
Vertical fan tray and vertical air filter
10
Power supply module door and power supply modules air filter

Figure 2: Rear View of the PTX5000 Packet Transport Router

Rear View of the PTX5000 Packet
Transport Router
  1
Center-mounting bracket
  6
Control board CB1 and Routing Engine RE1
  2
Air exhaust
  7
ESD point
  3
Centralized Clock Generators (CCGs)
  8
Power distribution units (PDUs)
  4
Switch interface boards (SIBs)
  9
Chassis grounding points
  5
Control board CB0 and Routing Engine RE0
 

Published: 2014-11-18