DYNAMIC CONTROL CHANNEL ESTABLISHMENT FOR SOFTWARE-DEFINED NETWORKS HAVING CENTRALIZED CONTROL

摘要

Dynamic control channel establishment for an access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a network to access nodes. For example, a method includes receiving, by the centralized controller, a discover message originating from a network node, which includes an intermediate node list that specifies a plurality of network nodes the discover message traversed from the network node to an edge node, determining, based on the plurality of nodes specified by the discover message, a path from the edge node to the network node, allocating each of a plurality of Multi-protocol Label Switching (MPLS) labels to a respective outgoing interface of each of the plurality of network nodes, and outputting one or more control messages for configuring the network node, wherein the control messages are encapsulated within a label stack comprising the allocated plurality of labels.

主权项

1. A method comprising:
receiving, by a centralized controller, a discover message originating from a network node, wherein the discover message includes an intermediate node list that specifies a plurality of network nodes the discover message traversed from the network node to an edge node; determining, by the centralized controller and based on the plurality of nodes specified by the discover message, a path from the edge node to the network node; allocating, by the centralized controller, each of a plurality of Multi-protocol Label Switching (MPLS) labels to a respective outgoing interface of each of the plurality of network nodes; and outputting, by the centralized controller, one or more control messages for configuring the network node, wherein the control messages are encapsulated within a label stack comprising the allocated plurality of labels.