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Accelerating Application Delivery in
the High-Performance Business
As an IT manager, you have every right to be
concerned. After all, you’re responsible for two
seemingly contradictory goals: increasing employee
productivity and reducing the cost of running the
business. On the one hand, you’re expected to provide
consistent application performance across your
geographically dispersed business for all employees
(headquarters, branch office, remote), as well as
suppliers, manufacturers, and contractors. Your
business runs on these applications and by improving
overall performance, you help the people who use
them every day do more meaningful work in less time,
improving productivity and making your business more
At the same time, you’re also expected to implement
strategic cost-cutting initiatives such as centralizing
servers and Web-enabling existing client-server
applications. Consolidating these resources into
a single data center greatly simplifies system
administration, management, and regulatory
compliance, and can also dramatically reduce costs.
Herein lies the dilemma. While resource consolidation can help you achieve your costcutting goals, it often does so at the expense of application performance by placing more
pressure on existing data center and WAN resources.
For instance, while Web-enabled applications reduce client software support costs, they
also create a capacity crunch on the WAN, since Web-based applications are nowhere near
as bandwidth-efficient as their client/server counterparts. Buying more bandwidth is an
option, but that will drive up costs and won’t fix all of your problems. The distance between
the data center and remote and branch-office users imposes application-killing latency—a
fact that all the bandwidth in the world can’t overcome. Any global business that has
extended its centralized business applications to distributed branch office and remote users
has learned that latency is the number one cause of poor application performance.
Regulatory compliance adds another dimension to the challenge. Making sure that
email, files, and other data are retained isn’t easy, given the disparate devices currently
installed at far-flung locations. In short, you’re faced with a compliance and application
performance challenge that requires a strategic, proven, and straightforward solution,
one that gives remote and branch office users the same response times they get from
local servers. You also deserve a set of tools that provide a holistic view of the distributed
enterprise and the applications running over it. Your WAN services and application
licenses cost a lot of money, so understanding exactly how these strategic assets are
performing is absolutely critical.
A number of trends and environmental changes threaten to transform the distributed
enterprise from a strategic asset into a potential liability. These trends and changes are
legitimate responses to evolving business needs. And because they have occurred over
time, they have resulted in a patchwork of solutions that have added complexity to the
Globalization and Distributed Applications
To remain competitive in an increasingly global business environment, organizations have
established branch offices in locations around the world. In order to give their branch
office staffs the same level of application performance as corporate headquarters,
companies have created mini data centers at each branch, deploying application, file, and
email servers at these remote sites.
While this resource proliferation gets the job done, it also has several serious drawbacks.
• It drives up capital costs, because the only way to keep pace with corporate expansion
is to buy and deploy servers on an as-needed basis, making it impossible to leverage
economies of scale.
• Deploying equipment at remote locations requires IT personnel for maintenance and
support, increasing headcount and adding operational costs.
• Deploying applications in this distributed manner makes end-to-end management,
backup, and recovery virtually impossible. A lack of visibility into remote locations also
makes troubleshooting and problem resolution more difficult, affecting both availability
and productivity.
• Security is also an issue; as device counts climb, so does the potential for a security
Web-Enabling Business Operations
Similar resource proliferation is occurring in the data center, though for different reasons.
• As the Internet became a strategic corporate productivity tool, IT execs added a “Web
tier” that initially consisted of Web servers in front of their centralized application
servers to support Web-based versions of their business applications. These Webbased applications not only provided universal access to all employees, they also
reduced costs by centralizing operations and eliminating the need to install and support
client software on individual user desktops.
• As dependence on these Web-enabled applications grew, however, the Web tier
expanded to include server load balancers (SLBs), SSL accelerators, cache appliances,
authentication servers, and other equipment to keep the applications running smoothly
for the swelling ranks of users.
• With each successive Web application deployment, complexity grew, driving up costs
and impacting performance. Management became difficult, and the initial benefits of
Web-based applications—universal access, centralized maintenance, and support—
were compromised.
Data Center Consolidation and Application Acceleration
On the heels of these changes, IT is now being tasked with a number of new initiatives to
curb costs and regain control over the ever-expanding enterprise.
To satisfy this objective, many organizations are eliminating their distributed branch office
data centers and centralizing servers in one or two locations. This centralization saves
considerable cost by reducing the number of servers required to support the workforce,
eliminating the need for local IT personnel, and simplifying system management.
Unfortunately, these solutions also subject the distributed enterprise to even greater
stress by forcing application sessions to run over notoriously slow wide area links. The
result is poor application performance and response times for remote, mobile, and branch
office users – the very problem the distributed data centers were designed to avoid.
In short, data center consolidation and server centralization has presented IT managers
with a whole new set of challenges, including:
• WAN Capacity: WAN links offer limited bandwidth, and this is a considerable handicap
as users attempt to send more rich content across the distributed enterprise. Webenabling conventional applications exacerbates the problem by consuming at least
10 times more bandwidth than traditional client/server applications. New application
rollouts—inevitable in any large organization—consume even more. With the pressure on
to constrain costs, IT managers can’t expect to buy their way out of this problem with
additional bandwidth.
• Latency: Latency is the silent killer of applications. Chatty protocols such as TCP,
HTTP, and HTTPS, as well as delay-sensitive solutions such as VoIP and the protocols
used by applications such as Microsoft Exchange and Microsoft file services, are
significantly impacted by even modest latency on wide area links. The result is poor
response times for users.
• Availability: Without a connection to the data center and the rest of the enterprise, work
simply stops. Creating an application-fluent infrastructure that understands the content
and transactions at Layers 4 through 7 is an absolute necessity to delivering transaction
completeness. Equally necessary in the always-on workplace are multiple paths connecting
branch office and remote users to ensure business processes continue uninterrupted.
• Contention: According to a recent survey, enterprise IT managers are running more than
100 applications across their WAN connections. Approximately one-quarter of these
applications are considered business-critical. When these applications compete for a
fixed amount of bandwidth, all of them suffer.
• Security: Nearly 60 percent of today’s workforce operates outside corporate
headquarters. These employees need secure access to business-critical applications
and other centralized resources. In many cases, secure access must also be extended to
“outsiders” such as customers and business partners.
• Manageability: You can’t manage what you can’t see. If IT managers don’t know what’s
happening across the distributed enterprise, they can’t see clearly how to improve
performance. Historically, monitoring and reporting application performance on the
WAN has been difficult to do on a corporate IT budget. With application licenses, WAN
services, and headcount consuming most of the budget, it’s time for a better solution.
Addressing Enterprise Initiatives
Each of these challenges impacts the major initiatives facing IT managers today. These
initiatives, which essentially define the evolving enterprise, include the following:
• Web-enabling: Off-the-shelf (SAP, Oracle) and custom-developed client/server
business applications to lower branch office management costs and simplify
connections by replacing private lines with virtual private networks (VPNs).
This application migration, however, raises a number of security, bandwidth, and
transaction completion issues. While client/server applications use proven methods to
ensure that transactions have been completed successfully, the Web-enabled versions
lack any such technique. Plus, they may be accessed over the public Internet, presenting
security and capacity problems.
• New applications: Continually deployed both to reduce costs and to deliver new
capabilities to end users. VoIP, for example, represents a cost-effective communication
tool, while Microsoft’s SharePoint and converged applications such as combined voice/
Instant Messenger (IM) are being used to enhance collaboration.
Applications like VoIP, however, have special requirements such as extremely low
latency, jitter, and loss. As congestion grows, VoIP calls could be dropped, making it
absolutely critical for IT to set and enforce quality of service (QoS) policies, and closely
monitor activity on WAN connections.
• Server centralization: While an effective cost-cutting initiative, server centralization also
presents performance issues for users accessing centralized applications from remote sites.
IT must be able to guarantee sufficient performance for remote users, and understanding
how WAN links behave, and how applications perform over these links, is critical.
• Regulatory compliance: Simply put, it’s difficult for IT to gather and retain email and
data for the required length of time if the enterprise is a patchwork of diverse devices
and point products distributed around the globe.
• Data replication: As businesses establish backup data centers farther away from the
primary location, they are typically unable to deliver the high-bandwidth, low-latency
services that permit the continuous replication of data that is so critical to disaster
recovery and high availability. Enterprises must overcome this obstacle to avoid data
loss and enable smooth cutover in the event of a disaster.
Juniper Networks Application Acceleration
Solutions for the Distributed Enterprise
Juniper Networks® WXC Series Application Acceleration Platforms and WX Client give IT
managers a holistic solution to problems in the data center and on WAN links, as well
as a cost-effective way to comply with new corporate initiatives—without sacrificing
performance across the distributed enterprise.
The WXC Series Family: Overcoming WAN Limitations
Server centralization leaves branch office employees at the mercy of the WAN when it
comes to application performance. The WXC Series Application Acceleration Platforms
accelerate mission-critical applications over wide area links, making branch office
users feel local again. The product family includes the WXC250, WXC1800, WXC2600,
WXC500, WXC590, WXC3400, and the WXC Stack. Each provides the full feature set
and runs the same WXOS software. WXC Series products provide a range of compressed
output, from 2 Mbps to 155 Mbps rates. They also differ in the number of remote sites they
can link to, ranging from two to 840. Multiple communities of WXC Series devices can be
configured to support an unlimited number of locations.
The WXC Series Framework
The WXC Series Framework is unique in that it delivers the full complement of capabilities
needed to enhance every aspect of the global enterprise:
• Compression and caching: To reduce the amount of data actually flowing across wide
area links by eliminating redundant data patterns and boosting connection capacity to
accommodate a greater volume of traffic
• Acceleration techniques: To speed the performance of specific applications and
protocols over the WAN, cutting response times and optimizing traffic flows to deliver a
more LAN-like experience for remote office users
• Application control: QoS, bandwidth management, and Policy-Based Multipath
features ensure that applications make the most efficient use of available links and
informed capacity planning and configuration decisions, as well as to quickly detect,
Poli ed
Bas ath
Se of
Redu nce
Sequ cula
Web ice nt
Dev eme
Flo et
Ne uence
q hing Accele w
S ac
WXC Series
how all WAN endpoints are performing, providing the information needed to make
• Visibility into WAN links and application performance: To enable IT to understand
p li
Ap Flow
bandwidth to optimize performance and prioritize mission-critical data traffic
isolate, and resolve performance problems
Real-World Benefits
Sequence Reduction (MSR) compression technology, for
instance, reduces application data flows across WAN links by
60 to 75 percent, which translates into a capacity increase
of up to four times. This “extra” capacity can be used for new
application rollouts without having to invest in additional
bandwidth. The Network Sequence Caching technology, which
100s GB
Network Sequence Caching
100s MB
Molecular Sequence Reduction
overcome their toughest wide area challenges. Molecular
Pattern Storage Size
WXC Series Framework capabilities help IT professionals
uses hard disks to store larger data patterns for longer periods
of time, reduces traffic flows up to 99 percent—a 50 to 100
10s Kb
LZ Compression
times capacity increase—again, without having to re-provision
a single link.
1 Byte
Acceleration techniques boost application response times at
branch offices by 5 to 10 times on average. Working with generic protocols such as TCP
and specific applications such as Microsoft Exchange (MAPI), Microsoft File Services
(CIFS) and Web servers (HTTP/HTTPS) and SSL, the WXC Series brings performance
gains of up to 100 times—more than sufficient to justify the centralization of critical
application servers.
100s Bytes
10s Kb
Pattern Granularity
Increased Bandwidth: The Sequence Caching
and MSR technologies benefit different
traffic types in their compression and caching
capabilities. Both provide far broader advantages
than file caching or traditional compression.
QoS assures application delivery by effectively managing bandwidth and establishing and
enforcing prioritization policies. Business-critical and delay-sensitive applications always
get the bandwidth they need, without interfering with other applications. And Juniper’s
Policy-Based Multipath technology lets IT assign application traffic to specific links when
more than one is available, providing an additional level of control to assure effective
application delivery.
WXOS Operating System Software
The WX Operating System (WXOS) software is the foundation of the Juniper Networks
WXC Series Application Acceleration Platforms. Supporting the interdependent
technologies of the WXC Series Framework that provide powerful compression, caching,
acceleration, application control, and visibility for the WXC Series products, the WXOS
software enables LAN-like application delivery across the WAN.
WX Central Management System (WX CMS) Software
One of the most critical issues to address in WAN optimization is visibility into an
enterprise’s distributed network and applications. All too often, IT does not have—and
cannot get the budget to buy—the tools needed to really understand what is traversing
the WAN. More than any other single feature of the WXC Series Framework, the WX CMS
software is tightly woven into every other function, providing IT with aggregated reporting
of WAN and application performance, and control over the parameters that affect
business policies.
The WX CMS software provides the following benefits for any deployment of multiple
WXC Series platforms:
• Visibility into WAN applications and performance, with unique customizable portal:
The WX CMS software gives IT a complete view into what is happening on their WAN
with deep visibility on applications distribution, performance, optimization and health.
• Centralized and simplified configuration: The WX CMS software creates a single
location from which to manage and monitor as many as 2,000 WXC Series platforms.
• Global policies and monitoring: The WX CMS software allows network managers to
centrally manage and modify global configuration settings on all WXC Series platforms.
IT can also monitor the distributed platforms, with status reports providing at-a-glance
summaries of device health, configuration status, and data on compression, sequence
caching, and acceleration results.
• Content distribution: The WX CMS software allows IT to selectively pre-populate
distributed WXC Series devices with large files, providing content delivery network
(CDN)-like capabilities without actually deploying a dedicated CDN solution.
• Automated deployment and license management: Using the WX CMS software, IT
can automate configuration and license management of remote WXC Series platforms,
greatly simplifying the set up of tens or hundreds of distributed platforms.
• Simplified problem resolution: The WX CMS Event Management Console provides a
summary of system and performance events, enabling IT to proactively find and resolve
network problems. The system can be configured to send email alerts when events are
detected for more rapid resolution.
The WX CMS software runs on Microsoft Windows 2000 and 2003 servers and can be
accessed securely from any browser connection via HTTPS.
WX Client: Application Acceleration for mobile users and
small offices
The WX Client provides a completely transparent and cost-effective way to boost the
productivity of mobile and small office users.
Easy to install and requiring little or no end user intervention, the WX Client is a Windowsbased desktop application (Windows 2000 and XP) that works transparently in the
background without interfering with other applications such as IPsec/VPN and personal
WXC Series
Files Servers, etc
WX Client deployment
WX WX Client
Optimized and
Accelerated Traffic
firewalls that may be installed on the end user’s machine. The WX Client improves
application performance over the WAN by recognizing and eliminating redundant
transmissions, and accelerating TCP and application-specific protocols.
The WX Client is unique in the industry because of its integration with Juniper Networks
SA Series SSL VPN Appliances. A key challenge for IT administrators in deploying software
on hundreds or thousands of end user machines is managing the distribution of the
software and maintaining software version control. Juniper solves this by integrating the
WX Client with the SA Series; when a user connects to their
SA Series appliance, the WX Client is auto-installed on the end user’s machine and for
all subsequent SA Series sessions, a check is performed by the SA Series appliance
to determine if the WX Client software and configuration version is current. Also most
software clients must be manually started to accelerate traffic, which in turn requires that
the end user remembers to start their software client when they are remote. Juniper solves
this in its integrated solution with a WX Client that can be automatically started once the
end user’s SA Series connection is established.
Combining the WX Client with SA Series products provides automated download and
WX Client management via a feature rich authentication and policy platform, providing IT
administrators with a simple way to ensure that all remote end user traffic is both secure
and accelerated.
Integration Advantages
Through the integration of advanced capabilities in the WXC Series, IT can proceed
with server centralization and data center consolidation initiatives to simplify network
architecture and reduce capital outlays. WXC Series platform deployment is completely
automated, so no IT expertise is required at the branch office when a new platform is
installed. Local users simply power the device and connect it to the network; the platform
takes it from there, downloading and installing the necessary configuration data from a
WX Central Management System (WX CMS) server at the central location.
Finally, because the WCX Series platforms are deployed symmetrically, with one at each
end of the wide area link, they are in a perfect position to monitor and assess exactly how
applications are performing over the WAN. IT managers gain full visibility into WAN links
between the data center and branch offices; in some cases, the IT staff can take advantage
of monitoring functions at the branch office that would be otherwise unavailable.
WXC Series
WXC Series
WX Client
WXC Series
WXC Series
WXC Series reduce application traffic on the WAN, opening up capacity and improving response times for
remote and branch-office users.
Juniper Networks is the leader in
performance-enabling services
and support, which are designed to
Planning, Implementation, and Deployment
The WXC Series products integrate seamlessly with existing LAN and WAN designs and
operate fully transparently, independent of other network equipment, applications,
servers, clients, and WAN topology and interfaces. WXC Series devices are deployed at
both ends of a WAN link, enhancing the WAN and application knowledge of each.
accelerate, extend, and optimize your
IT can place a WXC Series platform either directly in the flow of traffic between a LAN
high-performance network. Our services
switch and WAN router or attach it to a port on the switch or router. This off-path
allow you to bring revenue-generating
deployment option provides IT the flexibility required to support LANs designed with
capabilities online faster so you can
collapsed backbone switch/routers or with so many redundant connections among the
realize bigger productivity gains and
LAN switch and WAN router that inline deployments would be impractical.
faster rollouts of new business models
and ventures. At the same time,
The WXC Series provide a number of redundancy, high-availability, and load-balancing
Juniper Networks ensures operational
features. All data center WXC Series products include redundant power supplies, and all
excellence by optimizing your network to
WXC Series platforms support fail-safe operation. In the event of a failure of any kind,
maintain required levels of performance,
including total loss of power, the WXC Series interfaces automatically convert to a bypass
reliability, and availability. For more
mode in which all traffic simply passes through the device untouched.
details, please visit
WXC Series platforms operate in communities that dynamically exchange information such
as topology, reachability, and path performance metrics, providing IT with distributed stateful
intelligence about local and wide area network conditions. IT also has the option to partition
large WXC Series deployments into separate domains, increasing operational scalability.
WXC Series devices support a multitude of redundant deployment modes. WXOS
software works with routers configured with redundancy protocols, and WXC Series can
also be deployed in tandem at a single location, with both platforms active or with one
in standby mode. WXC Series devices also work effectively alongside VPN servers or
firewalls. The WXC Series sit on the trusted side of the security device and optimize traffic
before it is encrypted, avoiding any conflict with the security devices.
In contrast to many WAN optimization platforms that involve cumbersome configuration,
the WXC Series are fast and easy to install. Central devices can be configured within
10 minutes, and IT can use the WX CMS software to automate deployment of devices
at remote locations, which typically have no local IT staff. Corporate IT simply defines
centralized configuration templates and notes which locations will use them. At boot up,
remote WXC Series automatically obtain a network address, locate the WX CMS server
through the Domain Name System (DNS), request configuration from the WX CMS server,
download the appropriate configuration file, and begin operation.
IT can also use the WX CMS software to monitor and manage multiple WXC Series
devices as a group, or they can use the embedded secure WebView or command-line
interface (CLI) to manage each device separately. WXC Series products are available in a
range of capacities to meet the needs of various sizes of enterprise locations.
With application acceleration, high-performance businesses are figuring out that they no
longer need to make a significant compromise between IT and user requirements. In fact,
discriminating organizations are going a step further by recognizing the added long term
benefit of making an application acceleration solution part of a broader high-performance
network driven strategy.
The Juniper Networks WXC Series Application Acceleration Platforms and WX Client
deliver best-in-class application delivery across the wide area network, restoring global
networks to their rightful place as a strategic business tool. By simultaneously targeting
both the data center and the WAN, Juniper’s application acceleration platforms deliver
fast and consistent application response—ensuring uncompromised access to missioncritical applications and services. They enable IT managers to make the most efficient
use of existing resources while radically simplifying the data center and branch-office
architectures, streamlining applications, and delivering unprecedented visibility into
network performance. Finally, for the high performing enterprise, WXC Series Application
Acceleration Platforms and WX Client enable IT to achieve the greatest success in
meeting business goals by providing:
• Fast, consistent, and uncompromised access to important applications and services
across the WAN
• Broad application support
• Performance and scale to support large application deployments
• A comprehensive management system for central management, monitoring, and
• Flexible application acceleration deployment
• Solutions that build competitive advantage
The WXC Series Framework provides the foundation for the WXC Series Application
Acceleration Platforms, making it easy and cost-effective for IT to provide the enterpriseclass application acceleration and delivery needed to support new applications and
branch office access to centralized resources.
About Juniper Networks
Juniper Networks, Inc. is the leader in high-performance networking. Juniper offers a highperformance network infrastructure that creates a responsive and trusted environment for
accelerating the deployment of services and applications over a single network. This fuels
high-performance businesses. Additional information can be found at
Corporate and Sales Headquarters
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
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Juniper Networks (Hong Kong)
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Phone: 852.2332.3636
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EMEA Headquarters
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
Copyright 2009 Juniper Networks,
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Printed on recycled paper
Oct 2009
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