Hybrid WAN

MPLS is a widely deployed, reliable and secure technology for building a fixed-path VPN over an IP network between branch and head offices. However, when it come to the traffic such as SaaS or branch-to-branch, MPLS architecture seems to lack the agility and flexibility. Adding bandwidth to a MPLS is costly as the service itself is an expensive service, and thus meeting the bandwidth requirements and keeping up the IT budget are sometimes hard to make a choice. Moreover, with MPLS service, it is highly impossible to provide network connectivity to pop-up stores, mobile offices or temporary projects.




To remedy the drawback of MPLS, an enterprise WAN composed of multiple transports is increasingly common today. Perhaps this WAN configuration already helped leverage both MPLS and broadband circuits at all business locations, and gave increased application performance by defining the usage for WAN transports based on types of traffic. However, it comes with some downsides, including possible inefficient use of bandwidth and session drop on failover. Besides, dynamically selecting the optimum path for every application is still a unsolved challenge in this case.



Q-Balancer Hybrid WAN enables shared use of both private and Internet circuits at all business locations. In Q-Balancer Hybrid WAN, an edge appliance is deployed at branch office, while a network controller appliance is deployed at head office. Both appliances is then connected with a single virtual leased line, which is made up of multiple overly tunnels between them across both public and private WAN networks. Both head and branch office networks can send and receive traffic at the same time.

Flexible and Scalable

All WAN can be set active based on policy routing. Enterprise can flexibly employ broadband technologies to expand network capacity, while reserving the expensive private lines bandwidth for critical applications. Also, the capability of combining hybrid WAN networks enables the branches to access headquarters at a greater speeds than via a single link, and to increase bandwidth capacity by adding broadband lines when needed.

Best Is Always Selected

With Q-Balancer Hybrid WAN, business is able to direct business-critical applications to MPLS networks, while sending general traffic across the Internet VPN. Policies can be put in place to have latency-sensitive applications such as VoIP to get highest priority and be transmitted over the network links with the lowest packet loss and latency. The mechanism makes the critical applications run over the best possible network with the highest quality.

MPLS Offload

Cloud applications can be sent to the public cloud via the aggregated broadband circuits, delivering the maximum possible capacity, while latency-sensitive application such as VoIP and Video can be transmitted to corporate network via MPLS lines that comes with lowest packet loss and latency.

Lower Upfront Investment

Money can be wasted on expensive MPLS bandwidth in order to cope with the unexpected and uncertain traffic spikes in a traditional hybrid network, where MPLS line works as a primary circuit and broadband line works as a standby backup. With Q-Balancer's Hybrid WAN solution, traffic can be sent over the combined capacity of MPLS and broadband lines. Besides, later on, bandwidth can be upgraded quickly by adding more public Internet links, which are cheaper with more bandwidth capacity.

Data Security

Q-Balancer’s VPN includes 128- or 256-bit AES encryption to prevent packets on a public Internet circuit from being read or modified. Plus, Q-Balancer's XBond chops encrypted VPN session into the packet level, and then sends the packets over multiple Internet circuits, and reassembles the packets at the receiving end. This makes it virtually impossible for hackers or intruders to trap data and decrypt confidential information.


  • WAN resiliency
  • Assuring application performance
  • Faster application delivery
  • Lowering bandwidth and management costs
  • Enabling service provider independence
  • MPLS offload
  • Lowering upfront investment
  • Data security