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Use of sub path maintenance elements (SPMES) for multiprotocol label switching (MPLS) shared mesh protection

A multi-protocol label and sub-path technology, applied in the field of shared grid protection, can solve the problem of shared protection domain imposition

Active Publication Date: 2014-01-01
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] 3) Packet pipelines are infinitely elastic, and thus, the question of what paths to preempt in favor of the preferred path becomes a more complex problem, and is one that has to be coordinated at all preemption points so that all selectors match, and this is important for Constraints can be imposed on how shared protection domains can be established

Method used

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  • Use of sub path maintenance elements (SPMES) for multiprotocol label switching (MPLS) shared mesh protection
  • Use of sub path maintenance elements (SPMES) for multiprotocol label switching (MPLS) shared mesh protection
  • Use of sub path maintenance elements (SPMES) for multiprotocol label switching (MPLS) shared mesh protection

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Embodiment Construction

[0019] In the following description, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known circuits, structures and techniques have not been shown in detail in order not to obscure the understanding of this description. However, one skilled in the art will recognize that the present invention may be practiced without such specific details. In other instances, control structures, gate level circuits and full software instruction sequences have not been shown in detail in order not to obscure the invention. Those skilled in the art, with the included description, will be able to implement appropriate functionality without undue experimentation.

[0020] References in the specification to "one embodiment," "an embodiment," "example embodiment" etc. indicate that the described embodiment may include a particular feature, structure, or characteristic but ...

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Abstract

Embodiments of the invention include a computer-implemented method of shared backup path computation in an multiprotocol label switching (MPLS) network, the shared backup path to be used upon a failure of at least one working path of the MPLS network.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 466,861, filed March 23, 2011, which is hereby incorporated by reference. technical field [0003] Embodiments of the invention relate to shared mesh protection in Multiprotocol Label Switching (MPLS) networking. Background technique [0004] Shared Mesh Protection (SMP) is a common protection and restoration mechanism in transport networks where multiple paths can share the same set of network resources for protection purposes. Shared mesh protection allows paths that do not share a common point of failure to share protection resources. This is based on the assumption that the likelihood of simultaneous multiple failures or failures within the repair window is low. [0005] When considering control plane based recovery mechanisms, it is possible to provide the necessary communication and coordination between nodes to enact preemption in a share...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L45/24H04L45/28H04L45/50
CPCH04L45/50H04L45/28H04L45/22
Inventor 戴维·伊恩·艾伦
Owner TELEFON AB LM ERICSSON (PUBL)
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