Building a Business Intelligent WAN

> Application-Aware Routing
Demand for cloud applications has been quickly growing since its emergence. Technologies such as desktop virtualization, SaaS, IaaS, and IoT are very often delivered to branch networks via enterprise WANs. To keep or even increase business productivity, enterprises WAN needs to be transformed because the requirements today have gone beyond the traditional destination-based routing. To embrace with this growing trend, building better network connectivity with application intelligence is required.

The Q-Balancer SD-WAN is a solution for enterprises that already have private WAN services in place, e.g. MPLS. The solution has the ability to make good use of expensive private links and ensure performance for business applications. With its inbuilt ability of path monitoring, the solution is able to track network and path characteristics, including packet loss, latency, jitter, load, and bandwidth capacity.The Q-Balancer application-aware routing understands the paths applications need to take. It works in conjunction with path monitoring and policy-based load balancing. With the information collected by path monitoring, the application-aware routing has the ability to selectively directs application flows on the most optimal paths. The Q-Balancer Application-aware routing consists of three elements:

Identification– The Q-Balancer solution is incorporated with the technology of deep packet inspection (DPI) that goes beyond port-level approaches used today. It is also able to identify user-defined web domains as many as needed with the ability of policy‐based routing (PbR) using FQDN. This enables the edge appliance to intelligently direct traffic to the correct paths in compliance with business intent. 

Path Monitoring– Path monitoring continuously monitor the data traffic on the data plane tunnels between devices, and periodically measures the performance characteristics of the tunnel. For overlay tunnels, path monitoring looks for traffic loss and latency by looking at the one-way and round-trip traffic traveling over the tunnel. These measurements might indicate a blackout or brownout condition. Path monitoring also checks the underlay network connectivity for an IP address or group of IP addresses (path group). The active peer sends ICMP pings to verify that one or more destination IP addresses can be reached. 

Application Steering– Application steering is to map the application traffic to the path(s) that provides the desired performance for the application. The decision of path selection is made based on the results of path monitoring and rules specified in policy-based application-aware routing.

Top Benefits

  • Increased network performance without having to upgrade bandwidth

  • Assured application delivery by dynamically routing traffic among multiple circuits

  • Optimized application performance as best path is always selected by the required levels of packet loss, latency, and jitter defined in an application’s SLA.

  • Reduced network costs with the ability to precisely offload the internet-bound traffic from the expensive private networks.

  • IT management and monitoring are simplified through the automation of dynamic traffic steering