Software defined networking systems and methods via a path computation and control element

Patent metadata

Field	Value
Publication number	US-8942226-B2
Application number	US-201213646032-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 5, 2012
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

Software Defined Networking systems and methods are described via a Path Computation and Control Element (PCCE) that is based in part on a Path Computation Element (PCE). A common, simple interface is designed based on an existing PCE interface that allows a centralized entity (i.e., a Path Computation and Control Element or PCCE) to control the initiation of new connections or tunnels and by default to manage the state of these connections or tunnels once established. In particular, the systems and methods create an extension to the PCE architecture to allow a centralized application or applications to control the creation, rerouting and deletion of connections within a network.

First claim

What is claimed is:

1. A path computation and control method, comprising:
receiving a request for a new connection in a network at a Path Computation and Control Element (PCCE);
computing a path through the network based on a network graph of current topology in the network and applying computational constraints;
sending an update message to one of a source network element and a Path Computation Client (PCC) with the path and a new connection identifier for the path, wherein t…

Assignees

• Ciena Corp

Inventors

• Ong Lyndon Y

Classifications

• H04L45/44

  Electricity · mapped topic

• H04L45/42

  Electricity · mapped topic

• H04L41/12 Primary

  Electricity · mapped topic

• H04L65/1069

  Electricity · mapped topic

• H04L41/40

  Electricity · mapped topic