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Method and system of shortest path bridging (SPB) enhanced resilience with loop mitigation

A shortest path bridging, shortest path technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as exponential increase, network collapse, etc.

Active Publication Date: 2015-11-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Worse case, for multicast frame forwarding, forwarding loops can be disastrous, especially when a loop feeds back into another loop, causing an exponential increase in the bandwidth consumed in the network, and causing near-instantaneous network " collapse"

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  • Method and system of shortest path bridging (SPB) enhanced resilience with loop mitigation
  • Method and system of shortest path bridging (SPB) enhanced resilience with loop mitigation
  • Method and system of shortest path bridging (SPB) enhanced resilience with loop mitigation

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Embodiment Construction

[0023] Numerous specific details are set forth in the following description. It is understood, however, 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, it will be understood by those skilled in the art that the present invention may be practiced without such specific details. From the included description, those skilled in the art will be able to implement the appropriate functionality without undue experimentation.

[0024] References in the specification to "one embodiment," "an embodiment," "an example embodiment," etc. mean that the described embodiments may include a particular feature, structure, or characteristic but that not every embodiment may necessarily include the particular feature, structure, or characteristic. feature, structure or characteristic. Moreover, ...

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Abstract

A method forward Ethernet frames at a node in a network supporting an implementation of shortest path bridging (SPB) protocol is disclosed. The method starts with a shortest path computation for the node (referred to as the computing node). The shortest path computation selects at least a shortest path to each destination node in the network, where a neighboring node on the shortest path to reach each node is recorded. Then it computes a downstream loop-free alternate (LFA) node for a destination node, where the LFA node is downstream of the computing node but not on the selected shortest path to the destination node from the computing node. Then when connectivity to the neighboring node on the computed shortest path is detected to be abnormal, the node forwards an Ethernet frame with a destination media access control (MAC) address corresponding to the destination node through the LFA node.

Description

technical field [0001] Embodiments of the invention relate to the field of frame forwarding in Ethernet networks. More specifically, embodiments of the invention relate to methods and systems for enhancing the resiliency of connectivity with loop suppression in Ethernet networks supporting implementations of the Shortest Path Bridging (SPB) protocol. Background technique [0002] Ethernet is today the dominant computer networking technology for local area networks (LANs). With Ethernet gaining popularity among enterprises, carriers, and cloud service providers, Ethernet architectures transform LAN segments from merely being implemented as passive shared media to being implemented as actively switched networks. In Ethernet's actively switched networks, resilient acyclic frame forwarding is indispensable for efficient data communication, and the Shortest Path Bridging (SPB) protocol is the latest evolutionary step in already standardized Ethernet networking. On March 29, 201...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/705H04L12/703H04L12/753H04L45/02H04L45/16H04L45/18H04L45/28H04L45/74
CPCH04L45/16H04L45/18H04L45/28H04L45/48H04L45/66H04L45/745H04L45/02H04L45/12
Inventor D.I.艾伦P.萨尔特西迪斯J.法卡斯A.恰萨尔E.坦特苏拉
Owner TELEFON AB LM ERICSSON (PUBL)
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