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Product Overview
Service providers need a high density platform for their core networks. The platform needs to support a dense, cost optimized, highly available, and simplified network architecture. Juniper Networks PTX Series Packet Transport Switch addresses service provider supercore needs while improving total cost of ownership (TCO), optimizing power use, and significantly reducing space utilization.

Product Description
Service providers today are faced with significant challenges. Bandwidth utilization is increasing exponentially, while revenue per bit is dropping. This is causing margins to diminish and increasing the need for technology that will help providers streamline their operations and reduce their total cost of operations. • Network Complexity: The service provider core network funnels all traffic and is critical to avoiding network disruptions. The technology for the core should have a simple architecture, be automated, and function with minimal configuration changes. Providers also need technology that delivers the highest possible redundancy. • Static Architecture: Today’s services and traffic patterns are unpredictable. Network requirements change frequently with the introduction of new services. Architectures need to be flexible and dynamic in order to adapt to these changes in traffic patterns and services. • Power Challenges: For service provider core networks, power is one of the most important considerations. The total cost of power over a few years exceeds the cost of implementing the network infrastructure for some service providers. This means that efficient power utilization needs to be designed into new systems. • Facility Challenges: Service providers cannot keep on growing their facilities exponentially. They need technology that can scale to support traffic growth without having to expand their facilities. Also, with an increase in facility size, the cost of power distribution and cooling can become prohibitively high. In order to address these challenges, service providers need a new kind of core product that is much denser and more scalable, power efficient, automated, and redundant compared to currently available products. With Juniper Networks® PTX Series Packet Transport Switch, Juniper is introducing a product that meets these requirements and can fit into the service provider network supercore, as illustrated in Figure 1.

PTX Series
PTX Series Packet Transport Switches are a portfolio of high-performance platforms that are designed for the service provider supercore. These switches deliver powerful capabilities based on innovative silicon and forwarding architecture focused on MPLS and Ethernet. PTX Series Packet Transport Switches are designed to deliver several critical core functionalities, including game changing density and scalability, cost optimization, high availability, and network simplification.


A PTX Series switch working in conjunction with Juniper Networks T Series Core routers allows a service provider to build a core network that is flexible enough to accommodate dynamically changing traffic patterns for applications. and applications. adapt to rapid changes in both traffic pattern and volume. The edge network is focused on delivering intelligent services and subscriber management capabilities to business and residential customers. seamless management. It supports up to 8 FPCs. Architecture and Key Components The phenomenal growth in service provider network traffic makes fundamental changes in the architecture essential. mobility. even an increase in bandwidth intensive applications such as HD video. The PTX9000 can be used as a switch for the supercore delivering statistical multiplexing and dynamic LSP creation and management. and it includes optical transport capabilities. and dynamic LSP creation and management. and restoration of multiservice core networks deploying PTX Series platforms. planning. scale. and cloud-based services. The integration of optical transport further improves the economics of the core network. provisioning. The PTX5000 can be used to build a Converged Supercore with a higher capacity compared to a core router. support automation. The modular power design allows power efficiency on the order of 1 watt per Gbps. PTX9000 can also function as a packet optical node delivering functionality for multiple layers in a single Junos OS-based platform. This is less than half the requirements of competitive platforms. statistical multiplexing. PTX5000 Juniper Networks PTX5000 is a 28 rU 8 slot system. part of the Junos One family of processors. cost optimization. It supports up to 16 FPC with each FPC supporting 2 PICs. and cost optimization. The supercore is laser focused on speed. and supercore networks. simulation. The seamless integration of IP/MPLS and optical control plane facilitates modeling. The platforms are built from the ground up for speed. The PTX Series product is designed to scale up to 2 Tbps per slot and provides significant cost reduction over traditional core transport solutions. users. It is comprised of edge. allowing service providers to manage their supercore networks more efficiently. and dynamic label-switched path (LSP) creation and management. data center consolidation.Converged Supercore T4000 T4000 MX Series PTX5000 IP services T4000 T4000 PTX9000 MX Series IP services Junos Trio • Subscriber scale • Services scale • Bandwidth scale Junos Express • Speed • Scale • Cost Junos Trio • Subscriber scale • Services scale • Bandwidth scale Figure 1: requirements for service provider supercore The PTX Series Packet Transport Switch is based on Juniper Networks Junos® Express chipset. The PTX Series provides a unique combination of hardware and software features. The PTX Series adapts to rapidly changing traffic patterns for video. Juniper’s vision for the new network architecture is depicted in Figure 1. PTX5000 can also function as a packet optical node delivering functionality for multiple layers in a single Juniper Networks Junos operating system-based platform. with each FPC supporting 2 PICs. PTX9000 Juniper Networks PTX9000 is a 36 rU 16 slot system. It is the first supercore packet switch in the industry that supports a single chassis with 8 and 16 Tbps capacity. The PTX9000 can be used to build a Converged Supercore with a higher capacity compared to a core router. The core network needs to be capable of routing functions for high traffic volumes. Express uses state-of-the-art 40 nm fabrication technology and is built with “no packet drop” assurance. The PTX5000 can be used as a switch for the supercore delivering statistical multiplexing 2 . mobility for devices. core. and most importantly be simple to ensure operational efficiency and manageability. The architecture must deliver needed functionality with fewer nodes. and it includes optical transport capabilities.

performance. Chassis management delivers a faster master switchover. The architecture is designed to scale up to 2 Tbps per slot. 40GbE. The FPCs provide packet forwarding on a single board with a 480 Gbps full duplex aggregate capacity. In case of a SIB failure. Simplified Management The PTX Series simplifies the management function based on the elegance and simplicity of Junos operating system. Routing Engine/Control Board Complex The Control Board (CB) along with the rE provides control plane and chassis management functionality. • PTX9000 scales to 768 10GbE interfaces. MPLS has traditionally been deployed in the network backbone. 3 . reduced power consumption for partly populated systems. SIB There are a total of nine SIBs which are all used in active mode by the PTX Series fabric. This is a critical characteristic for service providers. The PTX Series supports a wide range of MPLS features and functionality. while reducing the cost of service delivery with a highperformance. routing engines. allowing coordinated provisioning. Unparalleled packet processing scale Enabled by new silicon innovation. and Switch Interface Board (SIB). PTX Series scalability. 192 40GbE interfaces. as they cope with an ever changing environment of new applications. and restoration of the multiservice supercore network. The architecture is designed to scale up to 2 Tbps per slot. High availability (HA) is critical for the service provider supercore which carries all service provider traffic. and SIB). Software will be the key component for the seamless integration of the IP/MPLS and optical control planes. The first PICs available are a 24x10GbE PIC and a 2x100GbE PIC. The rE communicates with the CB via a pair of 10GbE links and a Peripheral Component Interconnect (PCI) bus. while the protocols running on the switch control all of the interfaces. simplified.The architecture of the supercore needs to be highly flexible to accommodate changes in traffic characteristics. enhanced power budgeting with a modular power management. traffic is switched to the active SIB. Features and Benefits The following is a summary of the features that are available on the PTX Series products. Each FPC supports up to two PICs. power supply. Multiplexing and aggregation need to happen at the packet level. The FPC is designed to house different types of PICs simultaneously. routing Engine (rE). and it runs Junos OS. Modeling has indicated that the supercore needs to be packet-based to be most efficient. management. including 10GbE. and cloud services expansion. The key hardware components of the PTX Series Packet Transport Switch are the FPC. with one acting as the master and the other acting as the standby ready to takeover in case of failure. and 96 40GbE interfaces in a single chassis. resilient operating system that supports HA features such as graceful routing Engine switchover (GrES). data center consolidation. The rE/CB is designed to communicate with Juniper Networks JCS1200 Control System using small formfactor pluggable transceiver (SFP+) ports. Superior packet processing capabilities help alleviate the challenge of scaling the network as traffic increases. 32 100GbE interfaces. High availability hardware High availability software Fully redundant hardware (cooling. and integration of the optical and packet layers is needed to optimize the economics of the supercore. nonstop active routing (NSr) and unified in-service software upgrade (unified ISSU) for high availability. FPC and PIC The FPC cards are based on the Express chipset. manage chassis functions. Software processes running on the rE manage the routing tables. Chassis Management The PTX Series delivers powerful Junos OS chassis management that allows environmental monitoring and field-replaceable unit (FrU) control. PTX Series Features and Benefits FEATuRE DESCRIPTION BENEFIT System capacity • PTX5000 scales to 384 10GbE interfaces. where it provides traffic engineering and allows efficient transport of Layer 2 and Layer 3 traffic. granular control over FrU power-on. control board. Table 1. multi-zone cooling with better fan speed control for reduced noise. the PTX Series delivers an unparalleled packet processing capability of 720 Mpps per slot—defining the architecture of the service provider supercore and the dynamics of service delivery. PTX Series supports game-changing 50 ms redundancy switchover under load. PIC. and density allow service providers to increase capacity without expanding their network and facility footprint. and 100GbE interfaces. MPLS is the technology of choice for packet transport. and provide interface for system management and user access. Junos OS supports HA features that allow software upgrades and changes without disrupting network traffic. The packet flow is restored after switchover. and eight SIBs are capable of carrying line-rate traffic. and cost optimized architecture. The system can house two rE/CB complexes. MPLS is critical for handling dynamic bursty traffic and for dynamically aggregating traffic. and 64 100GbE interfaces in a single chassis. and CPU leveling during monitoring intervals.

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