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The Network Cloud blueprints deploy Rover and unicycle pods at multiple edge locations driven by a regional controller. As such the networking architecture spans the WAN between the RC and edge pods as well as the edge sites themselves. 

Clearly it is not desirable to span L2 broadcast domains over the WAN nor is it desirable to span L2 domains between edge sites. Thus the networking architecture allows for deployment using local isolated L2 domains at each edge site as well as support for IP connectivity only across the WAN.

Layer 2 Architecture

LAG Considerations

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