Story image

SD-WAN puts traditional routers on notice

SD-WAN technologies are becoming mainstream as distributed organisations experience the benefits of plentiful internet bandwidth, prioritised access to critical applications, and the ease of centralised management. 

Leading IT organisations are deploying SD-WAN solutions with software-based routing and displacing traditional branch router architectures. 

Over time, Doyle Research expects significant disruption of the branch router market, with SD-WAN becoming the primary platform.

The popularity of SaaS-based applications, hybrid cloud deployments, and pervasive mobility continues to drive a shift in WAN traffic patterns. 

In addition to a significant growth in WAN bandwidth requirements (20% per year), traffic is now flowing directly from branch/mobile locations to cloud-based applications. 

This reduces the reliance on the traditional MPLS networks connecting the branch to the centralised data centre. 

Backhauling internet-bound traffic from the branch, back to headquarters and then out to the internet to access SaaS or web applications is inefficient in connecting a distributed workforce to the cloud.

The SD-WAN architecture enables a radical shift in branch network architectures. SD-WAN provides the routing required to connect the branch to appropriate WAN links, including MPLS, Ethernet, internet broadband, cable, and 4G LTE—thus enabling IT organisations to displace (retire) existing branch routers. 

Replacing the router simplifies branch network operations by eliminating the need to manually reprogram every router whenever traffic patterns, application QoS, or security policies change. SD-WAN’s centralised, simplified management system provides for easy deployment and automated control of application traffic flows.

SD-WAN supports additional functionality at the branch, including WAN optimisation and stateful firewall. 

This eliminates the need for a separate WAN optimisation appliance and provides IT organisations with the option to distribute or centralise branch network security. 

For example, the Silver Peak Unity EdgeConnect SD-WAN solution incorporates a stateful firewall and enables granular internet breakout with the first-packet iQ to identify and to automatically steer trusted SaaS and web applications directly to the internet. 

Unknown or suspicious application traffic can be quickly and easily service-chained to next-generation firewalls or cloud-based security services for further inspection.

The popularity of SD-WAN, with its benefits of improved bandwidth economics, application prioritisation, and centralised management, is rapidly reshaping the branch network architecture. Distributed IT organisations can now implement an application-driven WAN Edge architecture that provides a flexible branch network deployment model. 

IT leaders should select SD-WAN technologies that, while fully compatible with existing routers and firewalls, can enable the transition to a “thin” branch network architecture—one without traditional routers or firewalls. 

The new WAN edge architecture will deliver consistent application performance, robust security and operational efficiencies.

Over the next few years, Doyle Research expects SD-WAN to dominate the branch network conversation and, over time, to replace traditional routers and provide branch-based network security. 

Click here to learn more about how SD-WAN is fast becoming the architecture of choice for the branch in the cloud era.

Three ways to achieve data security whilst enabling BYOD
"A mobility strategy is now more important than ever before, that said, selecting the right one is often no small task."
Mobile Infrastructure market sees fastest growth since 2014
The report from Dell’Oro shows that while the vendor rankings for the top three vendors remained unchanged with Huawei, Ericsson, and Nokia leading.
HPE unveils AI-driven operations for ProLiant, Synergy and Apollo servers
With global learning and predictive analytics capabilities based on real-world operational data, HPE InfoSight supposedly drives down operating costs.
How IoT and hybrid cloud will change in 2019
"Traditional VPN software solutions are obsolete for the new IT reality of hybrid and multi-cloud."
Enterprises to begin closing their data centres
Dan Hushon predicts next year companies will begin bidding farewell (if they haven't already) to their onsite data centres.
Citrix acquires micro app platform Sapho
Sapho’s micro applications improve employee productivity by consolidating access to tools, activities and tasks in a simple and unified work feed.
HPE expands AI-driven operations
HPE InfoSight extends select predictive analytics and recommendation capabilities to HPE servers, enabling smarter, self-monitoring infrastructure.
Dimension Data nabs three Cisco partner awards
Cisco announced the awards, including APJ Partner of the Year, at a global awards reception during its annual partner conference.