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Dec 16

Benefits of SD-WAN over MPLS

Posted on December 16th, by Sourabh Rathore 0 Comments

Benefits of SD-WAN over MPLS

With the changing business requirements and to keep in pace with the fast-transforming world, there is a need to distance oneself from the traditional approaches and make a move towards newer ones. This blog aims to tell how the newer wide area network approach (SD-WAN technology) is on the upper-ground as compared to the traditional MPLS.

What is traditional MPLS?

MPLS stands for Multiprotocol Label Switching is a routing technique used in high-performing networks that redefines traffic flows across enterprises WAN and service provider networks, to avoid complex lookups in the routing table.

It is a technique to speedily transport the data of any protocol and shaping network flow. Simply, one can say that MPLS is used to perform traffic engineering in IP networks to provide efficient usage of network resources.

One of the prominent advantages of traditional MPLS is that it delivers packets providing high QoS, Quality of service and proficiently manages and avoids packet loss. But bandwidth cost is one of the biggest disadvantages encountered with MPLS. MPLS megabyte costs exceptionally more than a broadband megabyte monthly. 

What is SD-WAN?

Going by the name itself, SD-WAN is a specific application of Software Defined Network(SDN) which is applied to WAN connections. Enterprises which are looking forward to flexible, open, cloud-based WAN technologies are making their move towards SD-WAN. SD-WAN is an application that enables the enterprises to connect seamlessly branch offices and data centers globally (over large geographic distances). It has emerged as the cost effective solution to control connection efficiency during times of high network demand. Cost factor along with network efficiency is one of the reasons why this move has accelerated these days. 

Let us have a look at what benefits SD-WAN bring over MPLS. 


  • Bandwidth Issues : As discussed above, MPLS has higher bandwidth utility issues, making monthly circuits costs over the top. On the other hand, SD-WAN utilizes multiple, high-bandwidth internet connection of the organization. No doubt, this will enable the enterprises to experience faster internet but at lowered costs. 
  • Connectivity options in MPLS include dual MPLS (active and backup) in SD-WAN, it’s a combination of MPLS, broadband and LTE. 
  • Enhanced Performance : MPLS provides one network connection with static Class of Service (CoS). Class of Service is a way to manage multiple traffic profiles over a network depending upon traffic priority. 
    With SD-WAN, if an enterprise has multiple ISP connections, the traffic will be sent across the circuit with the fastest route. The ability to send traffic along the best path consequently leads to better performance. 
  • SD-WAN possesses the ability to prioritize applications to enhance the user experience. SD-WAN is on the top of the network and ties underlying MPLS and other internet connections together which help them route business-critical traffic down the best available path. 
  • SD-WAN being Provider Agnostic : SD-WAN provides the same benefits irrespective of which Internet Service Provider (ISP) that your enterprise is using. The enterprise can add and remove ISPs at anytime and at any site without any hassle, making it much more scalable.  
    If your organization is located in different sites, then MPLS surely does not fit there. For instance, if in an international site, their MPLS provider may not be serviceable there. MPLS may have the same service provider at all sites. 
    In that case, the enterprises may encounter performance issues with no option but to send traffic through IP sec VPN. 
    So, if your office has multiple sites, make sure to opt for SD-WAN technology over MPLS. 
  • Talking about security, in MPLS, there are dedicated lines and internet traffic is backhauled to data center for inspection. In SD-WAN, there is embedded security such as firewalls, auto VPN and network segmentation. 
  • If in SD-WAN, there is direct access to cloud, while in MPLS, it is backhauled to data center and then to cloud. 
Sourabh Rathore
Written by Sourabh Rathore
Sourabh is Manager – Enterprise Sales at TaraSpan. He has domain expertise in Contact Centre Technology along with rich knowledge in Unified Communication & Video Conferencing solutions.


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