• Space eciency—The compact form-factor of the PTX3000 meets ETSI 300 mm standards, thus
meeng installaon requirements for colocaons, central oces, and regional networks in emerging
markets and transport-focused environments.
• Always-on infrastructure base—The PTX3000 is engineered with full hardware redundancy for
cooling, power, switch fabric, and host subsystems—either the Roung Engines and Control Boards
or the Roung and Control Boards (RCBs) and RCB companion cards—allowing service providers to
meet stringent service-level agreements across the core.
•Nondisrupve soware upgrades—The Junos operang system on the PTX3000 supports high
availability (HA) features such as graceful Roung Engine switchover (GRES), nonstop acve roung
(NSR), and unied in-service soware upgrade (unied ISSU), providing soware upgrades and
changes without disrupng network trac.
• Integrated deployment of opcal and IP/MPLS—The opcal transport opons provided by the
PTX3000 allow service providers to deploy a single router rather than deploying opcal equipment
and IP/MPLS routers separately, reducing network management requirements and operaonal
complexies.
System Overview
The PTX3000 router occupies 22 rack units (22 U) and accommodates up to eight Flexible PIC
Concentrators (FPCs), each of which supports one PIC. The PTX3000 also accommodates up to 16
integrated photonic line cards
(
IPLC
base modules) or up to 8 base modules and 8 expansion modules.
The IPLCs are installed in any of the FPC or PIC slots.
A PTX3000 with SIB-SFF-PTX-240 Switch Interface Boards (SIBs) and rst-generaon FPCs (FPC-SFF-
PTX-P1 and FPC-SFF-PTX-T) provides up to 1.9 Tbps, full duplex (3.8 Tbps of any-to-any, nonblocking,
half-duplex) switching. A PTX3000 with SIB3-SFF-PTX SIBs and third-generaon FPCs (FPC3-SFF-PTX)
provides up to 8 Tbps, full-duplex (16 Tbps of any-to-any, nonblocking, half-duplex) switching.
The system architecture cleanly separates control operaons from packet forwarding operaons. This
design eliminates processing and trac bolenecks, perming the PTX3000 to achieve high
performance.
• Control operaons are performed by the host subsystem, which runs Junos OS to handle roung
protocols, trac engineering, policy, policing, monitoring, and conguraon management.
• Forwarding operaons are performed by the Packet Forwarding Engines, which consist of hardware,
including ASICs, designed by Juniper Networks. The ASICs are a denive part of the hardware
design, and enable the PTX3000 to achieve data forwarding rates that match current ber-opc
capacity.
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