Increasing Network Speed and Reliability through Various WAN Transports
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 comes to SaaS or branch-to-branch applications, 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 for decision making. Moreover, with MPLS service, it is highly impossible to provide network connectivity to pop-up stores, mobile offices or temporary projects.

Legacy WAN

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 possibly inefficient use of bandwidth and session drop on failover.

Hybrid WAN

> WAN Virtualization
W
AN Virtualization combines various types of Internet lines into a virtual single connection. The technology combines existing private WANs such as MPLS, as well as any kind of Internet WAN links like DSL, cable, fiber, Metro Ethernet, etc., so as to augment and/or replace their expensive MPLS connections. WAN virtualization enables a faster connectivity (the sum of all WAN speed), and it is more open, reliable, resilient, agile and cost-effective to enterprise networks.

 

WAN Virtualization

 

Performance and Reliability – WAN virtualization helps enterprises improve their networks by aggregating multiple WAN connections to provide the highest level of WAN performance and reliability; enterprises are thus allowed to add broadband connections to augment their MPLS network, and achieve greater than 99.99% WAN reliability.

Flexible and Scalable – All connections can be set active based on policy routing whether they are private or public WAN. Enterprise can flexibly employ broadband technologies to expand network capacity, while reserving the expensive private lines bandwidth for critical applications.

Greater Bandwidth Utilization – 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, videoconferencing and VDI / Desktop virtualization over the WAN can be transmitted to corporate network via MPLS lines, which comes with lowest packet loss and latency. The capability of combining hybrid WAN networks enables the branches to access headquarters at a greater speeds.

Lower Upfront Investment – Money can be wasted on expensive MPLS bandwidth in order to cope with the unexpected or uncertain traffic spikes in a traditional enterprise network. With WAN virtualization, bandwidth can be upgraded incrementally by adding more broadband connections as the bandwidth demand grows. This enables enterprises to lower upfront investment on their WAN networks.

Top Benefits

  • Uninterrupted public and private cloud connectivity with WAN resiliency

  • Faster application delivery with efficient utilization of WAN bandwidth

  • High flexibility and scalability to avoid overprovision 

  • Assured delivery for business-critical applications as best path is always selected

  • Lower CAPEX and OPEX

  • Uncompromised data security