Hybrid WAN

Traditional WAN

MPLS is a widely deployed, reliable and secure technology for building a fixed-path VPN over an IP network between branch offices and headquarters. 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 expensive as it is an expensive service, and thus meeting the bandwidth requirements and keeping up the IT budget are sometimes hard to make a choice. Moreover, MPLS service does not provide the deployment agility for mobile offices or temporary sites.

Hybrid WAN

To overcome the drawback of MPLS, a WAN composed of MPLS and one or more broadband links in business is increasingly common today. Perhaps this WAN configuration already helped leverage both MPLS and Internet circuits at all business locations, and gave you increased efficiencies in business application performance by selecting Internet paths for some traffic. However, it comes with some downsides, including possible inefficient use of bandwidth and session drop on failover. Besides, selecting the optimum path for every application at the right time is still a challenge in this case.

Q-Balancer’s Hybrid WAN enables shared use of both private and Internet circuits at all business locations. In Q-Balancer’s Hybrid WAN, an edge appliance is deployed at branch office and a controller appliance is deployed at head office. Both appliances create a single logical VPN connection made up of multiple secure VPN connections between each other across both the public and private networks. Both networks at different locations can send traffic to and receive traffic from one another at the same time.

Flexible and Scalable

Q-Balancer XBond VPN bonding technology can be set up based on policy routing. You can flexibly use broadband lines to offload bulk traffic to the public network, while saving your critical traffic for private lines. Also, the capability of combining hybrid networks enables the branches to access headquarters at a greater speeds than via a single link, and to increase bandwidth capacity by adding WAN lines when needed.

Best Path Is Always Selected

With Q-Balancer's hybrid WAN solution, business can restrict business-critical traffic to MPLS networks, while directing less critical traffic across the Internet VPN. Policies can be put in place to have real-time quality sensitive applications such as VoIP to get highest priority and be transmitted over the network links with the lowest packet loss and latency whether the link is MPLS or broadband. The mechanism makes the critical applications run over the best possible network with the highest quality.

Use Bandwidth Effectively

Cloud applications can be sent over the aggregated capacity of all broadband circuits, delivering the maximum possible capacity. Site-to-site traffic can be transmitted over 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.


  • Assure application performance
  • Best path is always selected
  • Use bandwidth efficiently
  • Lower upfront investment
  • Uncompromised data security