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Method for using a network processor for the control plane of a core optical network

IP.com Disclosure Number: IPCOM000008311D
Publication Date: 2002-Jun-04
Document File: 2 page(s) / 119K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for using a network processor (NP) for the control plane of a core optical network. Benefits include improved performance.

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Method for using a network processor for the control plane of a core optical network

Disclosed is a method for using a network processor (NP) for the control plane of a core optical network. Benefits include improved performance.

Background

              A network processor is a device that includes a processing core and a number of processing engines. They classify and process the protocol packets.

              The conventional approach is to have a local microcontroller that handles the data path configuration and locally generated events.  It passes all other control plane information, which is carried through the transport layer overhead to central control. This solution has some indentified problems, including:

·        NP code developers are different from microcode developers.

·        Central management is required for control data that passes through overhead (OH) channels.

·        All decisions must be made at the central management level and communicated back to the local controller and the OH channels.

General description

              The disclosed method uses an NP as a local processing unit that can handle all control-plane data. The processing core handles data path configuration and locally generated events. The processing engines handle all other control-plane information that is carried through the transport layer overhead.

              This approach minimizes the amount of interaction required with the central management unit and may support completely distributed control and management.

Advantages

              The disclosed method provides...