公开(公告)号：US11909716B1

公开(公告)日：2024-02-20

申请号：US18063314

申请日：2022-12-08

Applicant: Nokia Solutions and Networks Oy

Inventor： Randeep Bhatia ,  Steven Benno ,  Fang Hao ,  Yu Mi ,  T V Lakshman

IPC: G06F7/02 ,  H04L45/586 ,  H04L61/5007 ,  H04L61/5046

CPC classification number: H04L61/5007 ,  H04L61/5046

Abstract: Leaf nodes of a tree structure, also having a root node and intermediate nodes, communicate with endpoints via access networks and store mappings from permanent virtual IP (VIP) addresses for the endpoints to physical IP (PIP) addresses for the endpoints on the access networks. The root node and intermediate nodes store pointers for the endpoints' leaf nodes and associated access networks. When a connection setup request (CSR) for a destination endpoint is received from a corresponding node, the receiving leaf node passes the CSR up through the tree structure to a lowest common ancestor (LCA) node for the receiving leaf node and one or more destination leaf nodes associated with the destination endpoint. The LCA node uses its pointers to pass the CSR down towards the one or more destination leaf nodes, which use the corresponding VIP-to-PIP mappings to forward the CSR to the destination endpoint.