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Method for a flexible and scalable Ethernet over SDH/SONET equipment, based on an IXP network processor and other components

IP.com Disclosure Number: IPCOM000012354D
Publication Date: 2003-Apr-30
Document File: 5 page(s) / 208K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a flexible and scalable Ethernet over synchronous digital hierarchy (SDH), synchronous optical network (SONET) equipment (ITU-T Recommendation X.86 Ethernet Over LAPS), based on an Internet Exchange Processor (IXP) network processor and other Internet Exchange Architecture (IXA) components. Benefits include improved functionality and improved performance.

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Method for a flexible and scalable Ethernet over SDH/SONET equipment, based on an IXP network processor and other components

Disclosed is a method for a flexible and scalable Ethernet over synchronous digital hierarchy (SDH), synchronous optical network (SONET) equipment (ITU-T Recommendation X.86 Ethernet Over LAPS), based on an Internet Exchange Processor (IXP) network processor and other Internet Exchange Architecture (IXA) components. Benefits include improved functionality and improved performance.

Background

              With the rapid growth of the Internet, data traffic has surprised the voice traffic community in many areas. As a result, telecommunication equipment manufacturers (TEMs) plan to upgrade their existing SDH/SONET transmission equipment to become accessible by Ethernet. Alternatively, TEMs plan to develop a new device that can seamlessly combine the legacy voice-oriented network with the data-oriented network.

              As SDH/SONET is the most widely constructed transport network around the world, SDH/SONET is the typical way to carry data traffic. The conventional method is Internet Protocol (IP) over SDH/SONET using application-specific integrated circuits (ASICs) or field-programmable gate arrays (FPGAs).

General description

              The disclosed method is a flexible and scalable Ethernet over SDH/SONET equipment, based on an IXP network processor and other IXA components. The primary goal of the disclosed method is a reference design that can execute in either simulation mode or in hardware mode. As the key part of the architecture, the IXP network processor and microcode perform the following functions:

•             Packet receiving

•             Protocol conversion

•             Layer-2 bridging

•             Packet queuing and transmitting

Advantages

              The disclosed method provides advantages, including:

•             Improved functionality due to integrating the Ethernet and SDH/SONET network traffic

•             Improved functionality due to protecting carrier’s investments and providing new services in legacy networks

•             Improved performance due to improving the complexity for format and protocol conversion to consolidate LAN, MAN and WAN networks together to form an end-to-end Ethernet connection within the whole network

•             Improved performance due to improving bandwidth utilization

•             Improved cost effectiveness due to extending the usefulness of legacy networks

Detailed description

      The disclosed method provides a flexible and scalable Ethernet over SDH/SONET equipment based on an IXP network processor and other components. The architecture of the disclosed method includes the following components (see Figure 1):

•             8-Port Ethernet Medi...