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Flow protection method and device for shortest path bridging network

A shortest path bridge and bridge device technology, applied in network interconnection, data exchange network, data exchange through path configuration, etc., can solve the problems of unreliable traffic forwarding path, long packet loss time, and traffic loss.

Active Publication Date: 2015-01-14
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the period from failure to traffic switching, the traffic forwarding path in the SPB domain is unreliable, which may cause traffic loss for a certain period of time, and the time of traffic failure is related to the speed of system convergence, the longer the convergence time The packet loss time will be longer

Method used

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  • Flow protection method and device for shortest path bridging network
  • Flow protection method and device for shortest path bridging network
  • Flow protection method and device for shortest path bridging network

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Embodiment Construction

[0068] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0069] figure 2 The flowchart of the traffic protection method in the SPB network provided by the embodiment of the present invention, such as figure 2 As shown, the specific steps are as follows:

[0070] Step 201: Deploy a protection path for the Ethernet Switch Path (ESP, Ethernet Switch Path) path of the bridge device in the SPB network, the protection path only includes the link protection path, or only includes the node protection path, or includes both link protection The path and the node protection path, the bridge device generates an association relationship between the ESP path and the protection path.

[0071] Bridge devices in the SPB network include: BEB devices and BCB devices.

[0072] Wherein, the link protection path is deployed for a link between two devices, and the start node and end node of the link protecti...

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Abstract

The invention provides a flow protection method and device for a shortest path bridging network. The method comprises the steps that a protection path is deployed for an ESP path in a bridge device in the SPB network, wherein the protection path comprises a link protection path and / or a node protection path; when the bridge device discovers that the ESP path breaks down, flow on the ESP path is switched onto the protection path, and meanwhile link status updating messages are spread to neighbor bridge devices so that devices in the network can carry out SPT calculation again to generate new forwarding paths. By means of the flow protection method and device, loss of the flow of a user is reduced.

Description

technical field [0001] The present invention relates to the technical field of Shortest Path Bridging (SPB, Shortest Path Bridging), in particular to a flow protection method and equipment in an SPB network. Background technique [0002] SPB is one of the Ethernet standards defined by the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.1aq, and is a further extension of the Multiple Spanning Tree Protocol (MSTP, Multiple Spanning Tree Protocol). Non-blocking Layer 2 network, using the SPB-Intermediate System to Intermediate System (ISIS, Intermediate System to Intermediate System) protocol to share the link status in the network. [0003] SPB is mainly developed to solve the problem of wasting bandwidth by blocking links in Spanning Tree Protocol (STP, Spanning Tree Protocol). It uses Layer 2 (L2, Layer 2) ISIS as its control plane protocol for topology learning and calculation. Currently, it mainly uses SPB (S...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/46H04L29/12H04L45/28
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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