Moor Insights and Strategy
Moor Insights and Strategy
Moor Insights and Strategy
Executive Summary
For too long, enterprises have been locked in a world where the advanced Wide Area Network (WAN)
functionality that was required to help expand their businesses and make them more agile has been
unattainable due to cost or complexity (or both). As the global business environment continues to speed
up, and companies need to be more agile to either gain a competitive edge or just keep up, the need for
an automated WAN orchestration has gone from a dream to a necessity. With bandwidth being pushed
to its limits, the high cost and relatively low bandwidth of Multiprotocol Label Switching (MPLS) lines are
being challenged by broadband for businesses. But broadband does not offer the same features or
dependability that enterprises have come to rely on with MPLS for their WAN services. Just as Software
Defined Networks are bringing an opportunity to redefine the structure and economics of the data center,
can Software Defined WANs do the same for the WAN space? Glue Networks is one vendor that is
delivering a solution in this space that merits a close look if your enterprise is relying on Cisco routing
today and you demand more flexibility or better performance from your WAN.
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Within the network and outside of the network, the new mix of devices, data types and services is
driving the need for a more flexible solution. The phrase all business is global is becoming more and
more relevant as companies, even smaller enterprises, are finding that from their supply chain to their
end customers, location is becoming less relevant. And in these circumstances, connectivity becomes
more crucial to every transaction.
Trends within the data center, such as bring your own device, unified compute/storage networks, VoIP
and mobility (from both a device and an employee standpoint) are pushing the limits of what can be
done with traditional WANs.
But as enterprise IT needs to move faster to grasp opportunity in the changing business landscape, this
static network environment is clearly out of sync with the needs of the business. When new
opportunities present themselves, suppliers become competitors or acquisitions/mergers change the
competitive landscape, a company needs to be able to take action. Dealing with competition today is
challenging enough for companies, but if competitors are utilizing lower cost broadband solutions
instead of MPLS and are able to successfully shield the broadband limitations from the end customer,
those businesses running MPLS WANs are at a distinct disadvantage from both a cost perspective as well
as a speed/agility perspective. Often the WAN limitations are holding enterprises back.
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allows Chicago to somewhat ease congestion with reversible lanes that can add extra capacity in one
direction based on inflows and outflows into the city. But with the typical MPLS circuit, the extra
bandwidth needed to handle peak traffic, or the new patterns that are emerging, remains too expensive
and does not provide enough bandwidth to truly change the equation for businesses. Broadband
options are available, but while there is dramatically more bandwidth, the QoS for these connections
will not reach the level of MPLS, leaving enterprise IT in a conundrum do you route all of your traffic
over the more expensive MPLS, incurring a stiff penalty to your budget (if you can afford it at all) or do
you risk some quality/features in moving to a broadband solution? Hybrid solutions, that employ both,
have been too difficult to manage because of the changing traffic patterns, application needs and the
shifting device and endpoint strategies.
Further complicating this challenge is the emergence of the internet of things, a device and sensorrich strategy that businesses are beginning to employ in order to capture more data about their
businesses. If you can imagine the complexity of WAN traffic today, just imagine the geometric
explosion of data and traffic as devices around the world all start calling home or tens of thousands of
products in multiple warehouses around the world can all communicate, be tracked and be correlated in
big data systems. Suddenly the explosion of endpoints and trackable components will drive even more
unique traffic and access challenges for companies around the world. All of this traffic is driving even
greater need for security and privacy as this data is directly tied to the health and condition of a
company, bringing a real-time pulse that could have huge implications if WAN configuration errors led to
a breach of this data. The need to lock down and secure data as it moves over the WAN is putting
additional pressure on IOT deployments. Recent high profile security breaches at retailers Target Stores
and Neiman-Marcus clearly illustrate the real business costs of keeping data secure.
Change management for todays WANs is a critical process for IT and as complexity of the network and
endpoints increase, the complexity of the change management goes up exponentially. Todays manual
change management processes cant keep pace with the changing needs of the business, nor the
velocity with which business is moving and evolving. With todays offices becoming less of a physical
environment and more of a virtual environment, companies are looking to mobility and telecommuting
to drive down the physical costs of facilities as well as put their employees closer to the action. This
drive to mobility is causing an impact on the WAN as companies need to provision for new mobile users
and provide for services like Microsoft Lync that unify their phones, chat and teleconference presence
on a single device over a WAN connection. The conversations that used to happen over the conference
room table are now happening over the WAN, with application sharing, rich data and video all being the
norm rather than the exception. Users expect these tools to work outside the office just as they work
from within the firewall with the same bandwidth and quality. Companies can save millions on PBX
capabilities through these new collaboration tools, but the stress on the IP network and maintaining call
level quality increases cost on the other end there is no free lunch.
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a dream for most IT teams simply because the tools were not readily available in the past and those that
did try to automate ran the risk of an increased number of errors as reconfiguration process was always
an opportunity to introduce unwanted or incorrect elements into the process.
The software-based WAN orchestration of WAN optimization makes far more sense as it allows
enterprise IT to leverage the investment that they have in existing hardware, provides more flexibility,
removes the variability of the hardware from the discussion and helps scale faster than people and
processes are able to scale.
Emerging full stack providers utilizing Software Defined WAN technology along with customized
hardware platforms focus on integration of their software with their physical platform, leaving solutions
limited from a feature perspective or isolated from the rest of their network. These solutions end up
with a rip and replace methodology that makes enterprise IT uneasy as they have to make decisions
up front with an impact that may last far beyond the current lifespan of the companies offering the
platforms. One company offering a pure software-based solution is a company called Glue Networks.
Glue Networks
Glue Networks claims to deliver the capabilities required for an agile company looking to automate their
WAN infrastructure. Glue was recently recognized by Gartner as a 2013 Cool Vendor and their Branch
Wide Area Software-Defined Network solution was identified as a 2013 Top 3 Use Case choice for the
Open Networking User Group. While Glue is a newcomer on the scene, they are positioning the
company with two benefits that they claim will put them at the front of the pack:
Software-only solution: For enterprise IT this greatly reduces the risk as there is no hardware to change
in your data center. There is little chance of ending up supporting orphaned platforms or having to
replace unamortized hardware because the vendor has either vanished or been swallowed up by a
larger entity that is not aligned with your IT plans and directions.
Focused on Cisco: Glue Networks products are Cisco certified, on the Cisco price list and sold by Cisco
partners & resellers. This alignment removes much of the risk for the decision, and allows enterprise IT
to leverage their existing Cisco investments. More importantly, it can work with Cisco routers (for
support levels, click here.)
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need to be comprehended in the process, giving enterprises more flexibility in the deployment. The
investment that companies have made in Cisco training and certification is not lost as that investment
can continue to be leveraged because the physical hardware layer is still intact.
Through Glue Networks intelligent WAN optimization, a central policy-based orchestration engine
handles the main tasks of managing the policies and configurations to the Cisco routers. Through this
centralized resource, traffic patterns and usage can be coordinated across a number of devices. The
orchestration engine handles all of the automation and also performs all of the error checking tasks to
ensure that there are no issues with the configurations.
Gluware applications plug in to the solution; initially a SOHO automation and Next Generation WAN
application were available, and in January 2014 Glue Networks launched a new IWAN application.
Zero touch provisioning allows the Central Policy Orchestration engine to provision the Cisco routers on
the network without user intervention.
The App Aware Dynamic WAN is a fluid environment that can react to the demands of the business,
changing the routing parameters to support the business at an application, traffic and quality of service
level. For instance, setting a QoS level for a communications application at a certain level may require
reducing the available bandwidth for certain lower priority applications to ensure that level of service
over the WAN to remote locations. Because there are agents talking directly to the Gluware engine,
Gluware can help manage this, changing router configurations on the fly to adapt and enforce this
policy.
What enterprise IT should see from this solution is a tunable WAN fabric that can monitor and manage
performance levels as well as automate the data handling based on network conditions or events. This
expert system sits on top of the lower level architecture and enables a hybrid WAN environment which
allows enterprise IT to utilize both MPLS and broadband connections. This strategy aligns application
needs to bandwidth, latency and quality parameters of each connection. Remote routers can call
home to the Glue cloud for provisioning, so companies can not only optimize those routers in their data
center, but also those that are located in the remote branch offices. This helps ensure that both sides of
the WAN are provisioned and optimized for optimal traffic handling. Along with the unified monitoring
and lifecycle management, Glue can give enterprise IT a holistic view into their WAN from an application
level.
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The Glue technology is designed to integrate with a data center SDN controller via the RESTful API. This
helps ensure that WAN health is taken care of while Gluware enables a dynamic and programmable
network connected with the data center. While one may think that data center SDN tools may also be
extended out to the router, network environments are very different from WAN environments. It
makes no sense to use data center SDN tools as they are designed for dealing with a different type of
environment that has different characteristics. WANs are typically bandwidth-starved, so effectively
managing the bandwidth is a key requirement where data center services typically have more available
bandwidth, resulting in tools that are less likely to be optimized for optimization.
Gluware is designed to directly orchestrate, utilizing current WAN routers or leverage new SDN WAN
controller architectures. In the SDN WAN controlled model, Gluware is an expert system app that is able
to sit on top of the Cisco Application Policy Infrastructure Controller (APIC) Enterprise Module and
leverage this new controller as an alternative way to orchestrate the WAN devices. Gluware is able to
offer enterprises a migration strategy from a controller-less architecture to a controlled architecture
without needing to build their own orchestration in-house and validate advanced WAN architectures.
Gluware is promoting the fact that enterprises can have a faster time to market, minimize risk, and build
a future proofed architecture that works with current routers as well as SDN controller architectures.
One advanced feature of Cisco routers is Performance Routing (PfR), a capability that is a part of most
modern models, but something rarely utilized by enterprise IT to its fullest extent because of the
complexity in configuration and monitoring. Why try to take advantage of a feature that allows for
optimizing the performance if you do not have the resources on your staff to actively manage the
feature? Glue Networks has designed their products to allow enterprise IT to take advantage of PfR,
utilizing a feature that they have been paying for all along in the hardware. With Gluware, enterprise IT
can set watermarks and the Gluware Central Policy Based Orchestration Engine is designed to work with
the Cisco APIC Enterprise Module or directly with WAN routers to monitor/manage to keep quality of
service within those metrics.
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Target Environments
Software Defined WANs and WAN orchestration can clearly benefit business, but, just as in SDN, the
devil is always in the details as to whether a deployment is going to meet your business needs. A key
discussion to have with any vendor is not only around their product, but also the associated services
that are required to successfully deploy the solution.
For optimization of software-based WAN solutions, multi-site businesses and those with heavy WAN
traffic are the types of organizations most likely to see benefit from these products. Here are the use
cases that we find most interesting for these types of solutions:
Enterprises with a large number of remote branch offices
Branch office automation and remote users are the primary use case for Software Defined
WANs. As numbers of sites or users increase, so does the complexity of communications, driving
up the need for a more flexible solution. Glue Networks claims that the best ROI for their
solution starts at around 50 locations, with the sweet spot being around 100 or more locations.
In addition to the number of sites the makeup of the IT staff itself matters; those with lean IT
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staffs and more generalists or those with larger staffs that have too many projects are prime
examples of the environments where this technology makes sense.
Enterprises looking to reduce the cost of their MPLS service
Those enterprises that are keen to reduce their transport costs by replacing some (or all) of their
transport capability can utilize a hybrid WAN to bring lower cost bandwidth options. Glue
Networks claims the transport savings can be up to 60-80% and OPEX savings can be 40-70%
versus a manual build.
Enterprises expanding into richer network configurations (voice, video, etc.)
For companies looking at expanding their networks with richer content or more bandwidthconsuming traffic like voice and video over the WAN, looking at Software Defined WANs can
leverage lower cost, higher bandwidth hybrid transport options.
Enterprises in highly volatile markets where change is a necessity
Businesses that need to react quickly to changing environments or deal with spikes in traffic at
either a seasonal or event-driven cadence can utilize Software Defined WANs to better manage
their expansion while keeping pricing in check.
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hard to choose the winners and losers, which is why most enterprises are still on the fence with their
plans nobody wants to deploy this generations 8-track tape.
Glue Networks is delivering a solution today that is worth customers investigating if they are running on
a Cisco platform and needing additional bandwidth or increased flexibility. Customers should look into
Glue and take the time to do an ROI assessment (including the services aspect) to see whether a Glue
solution is right for them.
A key decision point in any architecture decision, beyond the standard ROI metrics, is the impact that it
will have on your existing infrastructure. With an investment in both hardware and software today,
most of which is probably not fully amortized, it truly makes sense to understand how any investment
fits in with your current environment. Solutions that replace your current environment should be viewed
with extreme caution as the track record for these products generally is far from being proven.
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