US Patent Application 17804333. Optimizing IPSec for Hierarchical SD-WAN simplified abstract

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Optimizing IPSec for Hierarchical SD-WAN

Organization Name

Cisco Technology, Inc.

Inventor(s)

Samir Thoria of Saratoga CA (US)

Ram Dular Singh of Cupertino CA (US)

Laxmikantha Reddy Ponnuru of San Ramon CA (US)

Optimizing IPSec for Hierarchical SD-WAN - A simplified explanation of the abstract

This abstract first appeared for US patent application 17804333 titled 'Optimizing IPSec for Hierarchical SD-WAN

Simplified Explanation

The abstract describes a method performed by a software defined wide area network (SD-WAN) edge router in a hierarchical SD-WAN network.

  • The method involves originating a SD-WAN system route that includes an encryption key associated with the edge router.
  • The system route is then transmitted to one or more SD-WAN border routers.
  • The method also includes receiving a packet that is at least partially encrypted with the encryption key from one of the SD-WAN border routers.
  • The received packet is decrypted by the edge router.


Original Abstract Submitted

According to some embodiments, a method is performed by a software defined wide area network (SD-WAN) edge router in a hierarchical SD-WAN network comprising a plurality of edge routers and a plurality of border routers. The method comprises: originating a SD-WAN system route for advertising reachability to the edge router, the system route comprising an encryption key associated with the edge router; and transmitting the system route to one or more SD-WAN border routers. The method may further comprise: receiving a packet destined for the edge router from one of the one or more SD-WAN border routers, wherein the packet is at least partially encrypted with the encryption key associated with the edge router; and decrypting the received packet.