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SD-WAN Requirements

 

The key components of an SD-WAN solution center around application awareness, visibility, and performance. An SD-WAN solution must generally provide the following types of functionality:

  • Multiple connection types – MPLS, Internet, LTE, ADSL, etc.

  • Secure site-to-site connectivity - tunneling and VPNs

  • An intuitive interface for managing WAN connections

  • Ability to make use of all available uplink paths

  • Ability to optimize use of WAN connection for cost savings

  • Application-aware performance monitoring over WAN links

  • Dynamic spoke/endpoint learning and reachability

In addition, modern SD-WAN solutions have evolved to offer even broader capabilities, including:

  • Automation of end-to-end solution provisioning

  • Enterprise network modeling, network definition

  • Zero touch provisioning (ZTP) of on-premises devices, including establishing connectivity

  • Provisioning of multiple node types (spoke, hub, concentrators, etc.)

  • Dynamic path selection, and ability to load balance across multiple WAN connections

  • End-to-end, application-level SLAs through continuous path measurement

  • Dynamic application steering to counteract link degradation

  • End-to-end visibility and monitoring of devices, connectivity, and application performance

  • Support for 3rd-party services

  • Intent-based policy creation to define traffic treatment

  • Security through enterprise-wide policies

Juniper Networks Contrail SD-WAN solution, as described in this document, provides a full, end-to-end solution that aims to offer all of the above functionality.