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Method for maintaining packet service quality in optical network when optical chain-circuit fault

A technology for packet services and failures, applied in data switching networks, optical multiplexing systems, selection devices for multiplexing systems, etc., and can solve problems such as unoptimized capacity usage

Inactive Publication Date: 2007-05-02
舍费尔德科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In existing technologies, Internet Protocol (IP) treats the optical layer as a simple point-to-point connection without optimizing capacity usage to match the QoS level of Internet Protocol (IP)

Method used

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  • Method for maintaining packet service quality in optical network when optical chain-circuit fault
  • Method for maintaining packet service quality in optical network when optical chain-circuit fault
  • Method for maintaining packet service quality in optical network when optical chain-circuit fault

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Embodiment Construction

[0038] Fig. 3 shows a ring network including optical fiber as the physical medium. The network comprises two optical rings and three routers connected to the optical rings via optical interfaces (OIF). Rings provide high availability in the event of a failure while being topologically simple. Although links may fail due to fiber cuts and nodes may fail due to power outages or equipment failures, the ring network is resilient to failures because it provides at least two links between any pair of nodes. an independent path. The path does not have any common nodes or links other than the source and destination nodes.

[0039] Referring to Fig. 3, the traffic between routers 1 and 2 is protected by 1+1: optical fiber 21 is a working optical fiber, and optical fiber 23 is a protection optical fiber. Parallel fibers with traffic in the same direction can be replaced by a single fiber capable of carrying multiple optical channels. For example, wavelength division multiplexing (WD...

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PUM

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Abstract

This invention discloses a method for preventing packet service from faulting in an optical network containing multiple routers, multiple fibers and optical switches connecting them, the method includes: sorting the packet into multiple priorities, setting different protection kinds for different optical links so that said different optical links can have different protection grades according to the PRI of said packet transmitted by said optical link, in which, each link includes at least two parallel fibers, and the packet is routed to said optical link at the transmitting route according to the PRI to carry out the protection plan responding to the optical fault according to the PRI influenced by said fault.

Description

[0001] This application was filed by Nokia Corporation on January 4, 2001, with the application number 01821781.8 and the title of the invention as a divisional application for the case of "Maintaining the Quality of Packet Services in Optical Networks When Optical Links Break down". technical field [0002] The present invention relates generally to supporting packet traffic within an optical network, and more particularly to protecting Internet traffic in the event of failure of an optical network link. Background technique [0003] Figure 1 shows the OSI and TCP / IP communication models. The seven-layer OSI model originated from the work of the standard committee, while the four-layer TCP / IP built on the hardware layer was born from actual research. The session layer and presentation layer functions defined by the OSI model are omitted in the TCP / IP model, and the functions are performed by different TCP / IP protocols when required. [0004] In the TCP / IP model, users and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/00H04J14/02H04L12/56H04L12/437H04B10/08H04B10/02H04L45/24H04L45/28H04Q11/00
CPCH04J14/0241H04J14/029H04J14/0283H04Q2011/0084H04J14/0291H04L45/62H04J14/0227H04Q2011/0073H04L45/22H04Q2011/0081H04Q11/0071H04L45/28H04L45/306H04J14/0295H04L45/243
Inventor 马尔库·奥克萨宁安蒂·皮耶蒂莱宁罗纳德·布郎阿基·格罗恩雷约·尤沃宁哈拉尔德·卡亚阿里·特尔沃宁
Owner 舍费尔德科技有限责任公司
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