US 11,057,292 B1
Border node traffic convergence
Prakash Jain, Fremont, CA (US); Sanjay K. Hooda, Pleasanton, CA (US); and Victor Moreno, Carlsbad, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Sep. 10, 2019, as Appl. No. 16/566,714.
Claims priority of provisional application 62/858,876, filed on Jun. 7, 2019.
Int. Cl. H04L 12/66 (2006.01); H04L 12/751 (2013.01); H04L 29/06 (2006.01); H04L 12/707 (2013.01)
CPC H04L 45/02 (2013.01) [H04L 12/66 (2013.01); H04L 45/22 (2013.01); H04L 63/0227 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
transmitting, from a first border node in a network, a registration message for a first external traffic connection to a mapping function in the network, wherein the mapping function is an independent function, and wherein the mapping function maintains multiple extranet policies for the network;
receiving, from the mapping function, a first map notification indicating a second border node in the network is registered for a second external traffic connection;
establishing a first backup path from the first border node to the second border node for the first external traffic connection;
detecting, at the first border node, a change in the first external traffic connection;
routing, at the first border node, network traffic for the first external traffic connection via the first backup path; and
transmitting a deregistration message for the first external traffic connection to the mapping function in the network.