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Juniper PTX5000
Part # FPC3-PTX-U3-L
PTX5000 3rd generation 3 Tbps FPC3 for LSR application
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| Manufacturer | Part # | Description | QTY |
| Juniper | FPC3-PTX-U3-L | PTX5000 3rd generation 3 Tbps FPC3 for LSR application | Contact for current inventory |
PTX5000
The Juniper Networks PTX5000 Packet Transport Router transforms the core network with physical and virtual innovations for unprecedented scale and cost. Service providers now have the freedom to create new virtualized services anywhere in the network and elastically create a Converged Supercore architecture with precise traffic control without sacrificing the service experience. The PTX5000, for the first time, lets service providers seamlessly scale IP/MPLS traffic without sacrificing performance and deployability, the contributors to eroding TCO analysis for service providers. The PTX5000 focus is on the Converged Supercore architecture for service providers, which is optimized for LSR, Internet backbone, peering, and dense 100 Gbps optical-coherent DWDM applications for large, high-speed, massive-scale networks. As such, for the first time, service providers can match traffic demand with optimized core router performance and deployability. The PTX5000, the only core router that can be deployed in a standard 19-inch telecommunications rack, stands 36U high with eight line-card slots, two redundant route engine slots, and nine switch fabric slots. At 3 Tbps per line-card slot, the PTX5000 supports 24 Tbps of total system capacity. Powered by the Juniper ExpressPlus Silicon, the PTX5000 offers predictable IP/MPLS packet performance and functionality, eliminating the complex sawtooth packet profile found in elaborate overengineered NPUs deployed in other core routers. The PTX5000 supports 240 x 100GbE interfaces (in QSFP28 optic form factors) in a single chassis, delivering the scale required to match expanding traffic demand.
The PTX5000 also supports the industry’s densest 100GbE-coherent DWDM linecard with 1 Tbps capacity, blending best-of-class IP/MPLS performance with optical transport to flatten network layers.
Benefits of the PTX5000
Increased Scalability
The PTX5000 scales to 24 Tbps in a single chassis, supporting up to 1536 10-Gigabit Ethernet interfaces, 384 40-Gigabit Ethernet interfaces, and 240 100-Gigabit Ethernet interfaces, giving service providers the performance and scalability needed as networks grow. The purpose-built ASICs in the PTX5000 provide enhanced packet processing for both full IP functionality and MPLS transport, accommodating scale as traffic continues to increase and optimizing IP/MPLS transit functionality.
Always-on Infrastructure Base
The PTX5000 is engineered with full hardware redundancy for cooling, power, Routing Engines, Control Boards, and Switch Interface Boards (SIBs), allowing service providers to meet stringent service-level agreements across the core.
Nondisruptive Software Upgrades
The PTX5000 features a resilient operating system that supports high availability (HA) features such as graceful Routing Engine switchover (GRES), nonstop active routing (NSR), and unified in-service software upgrade (unified ISSU), providing software upgrades and changes without disrupting network traffic.
Juniper FPC3-PTX-U3-L
System Overview
The PTX5000 occupies 36 rack units (36 U) and accommodates up to eight Flexible PIC Concentrators (FPCs), each of which can be configured with two Physical Interface Cards (PICs) to support a variety of network media types.
The system architecture of the PTX5000 cleanly separates control operations from packet forwarding operations. This design eliminates processing and traffic bottlenecks, permitting the PTX5000 to achieve high performance.
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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.
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Forwarding operations are performed by the Packet Forwarding Engines, which consist of hardware, including ASICs, designed by Juniper Networks. The ASICs are a definitive part of the hardware design and enable the PTX5000 to achieve data forwarding rates that match current fiber-optic capacity.
PTX5000 System Architecture Description
The PTX5000 has two main architectural components:
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Routing Engine—One or more Routing Engines provide Layer 3 routing services and network management.
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Packet Forwarding Engines—These high-performance, ASIC-based components provide packet forwarding, route lookups, and Layer 2 and Layer 3 packet switching.
The Routing Engines and the Packet Forwarding Engines perform their primary tasks independently, but communicate through multiple links. This arrangement streamlines forwarding and routing control and runs Internet-scale backbone networks at high speeds.
PTX5000 Packet Forwarding Engine Architecture
The Packet Forwarding Engines provide Layer 2 and Layer 3 packet switching, forwarding, and route lookup functions.
The Packet Forwarding Engines are implemented in ASICs that are physically located on the FPCs. Each Packet Forwarding Engine consists of the following components:
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Lookup ASICs, which provide the route lookup function, control functions, Layer 2 and Layer 3 encapsulation and de-encapsulation, and manage the division and reassembly of packets within the PTX5000.
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Queuing and Memory Interface ASICs, which manage the buffering of data cells in memory and the queueing of notifications.
The fabric ASICs, located on the Switch Interface Boards (SIBs), extract the route lookup key and manage the flow of data cells across the switch fabric.
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