Patent ID: 11956142
Assignee: VERSA NETWORKS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A branch node comprising:
a communications interface configured to receive a packet at the branch node in an established session, the packet having a source node and a destination node;
a processor coupled to the communications interface and to a memory, and configured to implement:
a path metrics monitor configured to receive Service Level Agreement (SLA) metrics of links between sites in the SD-WAN topology from at least a portion of the peers of the brand node, the SLA metrics received at the branch node out-of-band in protocol extension packets through secure tunnels of the SD-WAN topology; and
a topology and path selection engine configured to calculate performance of a plurality of possible paths from the source node to the destination node by combining SLA metrics for each link in the respective path, the source node and the destination node being within the SD-WAN topology, and to select a path at the branch node from the source node to the destination node based on the calculated performance.