Sponsored By: 128 Technology
Software-defined wide area networking (SD-WAN) is a hot networking trend because it replaces traditional WAN routers and supports multiple transport technologies like MPLS and internet. SD-WAN also allows load sharing of traffic across multiple WAN connections making it more efficient.
But a new white paper based upon market research conducted by CIMI Corp. says that the current thinking around SD-WAN falls short of realizing the technology’s potential. The paper, Software-Defined WAN in the Age of Virtualization— identifies the requirements that are essential to fulfilling the technology’s real mission.
Specifically, the white paper stresses the importance of having a flexible edge element that delivers a Service Centric Fabric in the SD-WAN environment— a recent necessity that has not been addressed by most SD-WAN providers.
Requirements for building a Service Centric Fabric —and moving SD-WAN forward in the real world—are:
- Session Awareness—The “session” that bounds a message context has to be treated as a whole
when disconnecting and reconnecting, exercising firewall protection, or doing load balancing. Absent session awareness, chaos ensues.
- Explicit Logical Name Support— If IP addresses are what a user or resource are known by, then changing them changes who the user/resource is. The use of a logical name is fundamental to address mediation because it establishes user identity outside the IP address space.
- Application Service Awareness—SD-WAN needs to support meaningful application prioritization so that they are useful in conjunction with virtualization and cloud computing.
- SD-WAN-as-a-Service Model—A software-based SD-WAN solution that can be deployed on standardized servers, on cloud servers, or in edge appliances is a more versatile approach.
- Self-Federating—A good SD-WAN solution must be able to federate all of the global policy, naming, and addressing elements through the entire WAN automatically.