Product Documentation

Building a SD-WAN Network

Aug 09, 2017

To build an SD-WAN overlay network without the need to statically build SD-WAN overlay route tables:

     1. Create a WAN Path tunnel across each WAN link between two SD-WAN appliances.

     2. Configure Virtual IP to represent the endpoint for each WAN link. You can establish encrypted WAN paths through the current L3 Network.

     3. Aggregate 2, 3, and 4 WAN paths (physical links) into a single Virtual Path allowing packets to traverse the WAN utilizing the SD-WAN overlay network instead of the existing underlay which is least intelligent and cost inefficient.

SD-WAN Routing Components and Network Topology

     •    Local – subnet resides at this site (advertised to SD-WAN environment)

     •    Virtual Path – sent through Virtualized Path to the selected site appliance

     •    Intranet – sites with no SD-WAN appliance

     •    Internet – internet bound traffic

     •    Pass-through – untouched traffic, in one bridge interface out the other

     •    Default route (0.0.0.0/0) defined.  Used for pass-through traffic not captured by the SD-WAN overlay route table, or utilized at the MCN to instruct clients sites to forward all traffic back to MCN node for back-haul of internet traffic.

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