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PTX Series Packet
Transport Switch
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.
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Converged
Supercore
T4000
T4000
MX Series
PTX5000
PTX9000
MX Series
IP services
IP services
T4000
T4000
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, part of the Junos One family
of processors. Express uses state-of-the-art 40 nm fabrication
technology and is built with “no packet drop” assurance. The PTX
Series product is designed to scale up to 2 Tbps per slot and provides
significant cost reduction over traditional core transport solutions.
The PTX Series provides a unique combination of hardware and
software features, allowing service providers to manage their
supercore networks more efficiently. The platforms are built from
the ground up for speed, scale, and cost optimization. The PTX
Series adapts to rapidly changing traffic patterns for video, mobility,
and cloud-based services. It is the first supercore packet switch
in the industry that supports a single chassis with 8 and 16 Tbps
capacity. The modular power design allows power efficiency on the
order of 1 watt per Gbps. This is less than half the requirements of
competitive platforms.
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, data center
consolidation, mobility for devices, users, and applications, even
an increase in bandwidth intensive applications such as HD video.
The integration of optical transport further improves the economics
of the core network. The seamless integration of IP/MPLS and
optical control plane facilitates modeling, planning, simulation,
provisioning, seamless management, and restoration of multiservice
core networks deploying PTX Series platforms.
PTX5000
Juniper Networks PTX5000 is a 28 RU 8 slot system. It supports up
to 8 FPCs, with each FPC supporting 2 PICs. The PTX5000 can be
used as a switch for the supercore delivering statistical multiplexing
and dynamic label-switched path (LSP) creation and management.
PTX5000 can also function as a packet optical node delivering
functionality for multiple layers in a single Juniper Networks Junos
operating system-based platform. The PTX5000 can be used to
build a Converged Supercore with a higher capacity compared to a
core router, and it includes optical transport capabilities.
PTX9000
Juniper Networks PTX9000 is a 36 RU 16 slot system. It supports
up to 16 FPC with each FPC supporting 2 PICs. The PTX9000
can be used as a switch for the supercore delivering statistical
multiplexing and dynamic LSP creation and management.
PTX9000 can also function as a packet optical node delivering
functionality for multiple layers in a single Junos OS-based
platform. The PTX9000 can be used to build a Converged
Supercore with a higher capacity compared to a core router, and it
includes optical transport capabilities.
Architecture and Key Components
The phenomenal growth in service provider network traffic makes
fundamental changes in the architecture essential. The architecture
must deliver needed functionality with fewer nodes, adapt to rapid
changes in both traffic pattern and volume, support automation,
and most importantly be simple to ensure operational efficiency
and manageability.
Juniper’s vision for the new network architecture is depicted in
Figure 1. It is comprised of edge, core, and supercore networks.
The edge network is focused on delivering intelligent services and
subscriber management capabilities to business and residential
customers. The core network needs to be capable of routing
functions for high traffic volumes. The supercore is laser focused
on speed, cost optimization, statistical multiplexing, and dynamic
LSP creation and management.
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The architecture of the supercore needs to be highly flexible
to accommodate changes in traffic characteristics. This is a
critical characteristic for service providers, as they cope with
an ever changing environment of new applications, data center
consolidation, and cloud services expansion. Modeling has
indicated that the supercore needs to be packet-based to be most
efficient. Multiplexing and aggregation need to happen at the
packet level, and integration of the optical and packet layers is
needed to optimize the economics of the supercore. MPLS is the
technology of choice for packet transport.
Software will be the key component for the seamless integration
of the IP/MPLS and optical control planes, allowing coordinated
provisioning, management, and restoration of the multiservice
supercore network. MPLS is critical for handling dynamic
bursty traffic and for dynamically aggregating traffic. MPLS has
traditionally been deployed in the network backbone, where it
provides traffic engineering and allows efficient transport of Layer
2 and Layer 3 traffic. The PTX Series supports a wide range of
MPLS features and functionality.
The key hardware components of the PTX Series Packet Transport
Switch are the FPC, PIC, Routing Engine (RE), and Switch Interface
Board (SIB).
FPC and PIC
The FPC cards are based on the Express chipset. Each FPC
supports up to two PICs, including 10GbE, 40GbE, and 100GbE
interfaces. The first PICs available are a 24x10GbE PIC and a
2x100GbE PIC. The FPC is designed to house different types of
PICs simultaneously. The FPCs provide packet forwarding on a
single board with a 480 Gbps full duplex aggregate capacity.
Routing Engine/Control Board Complex
The Control Board (CB) along with the RE provides control plane and
chassis management functionality, and it runs Junos OS. Software
processes running on the RE manage the routing tables, while the
protocols running on the switch control all of the interfaces, manage
chassis functions, and provide interface for system management and
user access. The system can house two RE/CB complexes, with one
acting as the master and the other acting as the standby ready to
takeover in case of failure. The RE/CB is designed to communicate
with Juniper Networks JCS1200 Control System using small formfactor
pluggable transceiver (SFP+) ports. The RE communicates
with the CB via a pair of 10GbE links and a Peripheral Component
Interconnect (PCI) bus.
SIB
There are a total of nine SIBs which are all used in active mode by
the PTX Series fabric. In case of a SIB failure, traffic is switched to
the active SIB. The packet flow is restored after switchover, and
eight SIBs are capable of carrying line-rate traffic.
Chassis Management
The PTX Series delivers powerful Junos OS chassis management
that allows environmental monitoring and field-replaceable unit
(FRU) control. Chassis management delivers a faster master
switchover, enhanced power budgeting with a modular power
management, reduced power consumption for partly populated
systems, granular control over FRU power-on, multi-zone cooling
with better fan speed control for reduced noise, and CPU leveling
during monitoring intervals.
Simplified Management
The PTX Series simplifies the management function based on the
elegance and simplicity of Junos operating system.
Features and Benefits
The following is a summary of the features that are available on the PTX Series products.
Table 1. PTX Series Features and Benefits
Feature Description Benefit
System capacity
High availability hardware
High availability software
Unparalleled packet
processing scale
• PTX5000 scales to 384 10GbE interfaces, 32 100GbE
interfaces, and 96 40GbE interfaces in a single chassis.
The architecture is designed to scale up to 2 Tbps per slot.
• PTX9000 scales to 768 10GbE interfaces, 192 40GbE
interfaces, and 64 100GbE interfaces in a single chassis.
The architecture is designed to scale up to 2 Tbps per slot.
Fully redundant hardware (cooling, power supply, routing
engines, control board, and SIB).
Resilient operating system that supports HA features such
as graceful Routing Engine switchover (GRES), nonstop
active routing (NSR) and unified in-service software
upgrade (unified ISSU) for high availability.
PTX Series supports game-changing 50 ms redundancy
switchover under load.
Enabled by new silicon innovation, 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 scalability, performance, and density allow
service providers to increase capacity without expanding
their network and facility footprint.
High availability (HA) is critical for the service provider
supercore which carries all service provider traffic.
Junos OS supports HA features that allow software
upgrades and changes without disrupting network traffic.
Superior packet processing capabilities help alleviate
the challenge of scaling the network as traffic increases,
while reducing the cost of service delivery with a highperformance,
simplified, and cost optimized architecture.
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Juniper Networks Services and Support
Juniper Networks is the leader in performance-enabling services
and support, which are designed to accelerate, extend, and
optimize your high-performance network. Our services allow
you to bring revenue-generating capabilities online faster so
you can realize bigger productivity gains and faster rollouts of
new business models and ventures. At the same time, Juniper
Networks ensures operational excellence by optimizing your
network to maintain required levels of performance, reliability, and
availability. For more details, please visit www.juniper.net/us/en/
products-services.
Ordering Information
For more information, please contact your Juniper Networks
representative.
About Juniper Networks
Juniper Networks is in the business of network innovation. From
devices to data centers, from consumers to cloud providers,
Juniper Networks delivers the software, silicon and systems that
transform the experience and economics of networking. The
company serves customers and partners worldwide. Additional
information can be found at www.juniper.net.
PTX Series Packet Transport Switch
Specifications
Table 2. PTX Series Specifications
PTX5000
PTX9000
Physical dimensions
(W x H x D)
17.5 x 33.1 x 62.5 in
(44.5 x 84.1 x 158.8 cm)
34.5 x 33.1 x 72 in
(87.6 x 84.1 x 182.9 cm)
Maximum weight 1,000 lbs 2,000 lbs
Mounting
Front or center
Rack mount
Front or center
Directly mountable
units
Power system rating 480 A @ 48 VDC 840 A @ 48 VDC
Typical power
consumption*
Operating
temperature
11 KW 20 KW
32° to 86° F
(0° to 30° C)
32° to 86° F
(0° to 30° C)
*These numbers are power supply ratings; actual power usage is much lower.
Corporate and Sales Headquarters
APAC Headquarters
EMEA Headquarters
To purchase Juniper Networks solutions,
Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, CA 94089 USA
Phone: 888.JUNIPER (888.586.4737)
or 408.745.2000
Fax: 408.745.2100
www.juniper.net
Juniper Networks (Hong Kong)
26/F, Cityplaza One
1111 King’s Road
Taikoo Shing, Hong Kong
Phone: 852.2332.3636
Fax: 852.2574.7803
Juniper Networks Ireland
Airside Business Park
Swords, County Dublin, Ireland
Phone: 35.31.8903.600
EMEA Sales: 00800.4586.4737
Fax: 35.31.8903.601
please contact your Juniper Networks
representative at 1-866-298-6428 or
authorized reseller.
Copyright 2011 Juniper Networks, Inc. All rights reserved. Juniper Networks, the Juniper Networks logo, Junos,
NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United States and other
countries. All other trademarks, service marks, registered marks, or registered service marks are the property of
their respective owners. Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper
Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice.
1000364-001-EN Feb 2011
Printed on recycled paper
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