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Method for shortening network protection time and apparatus

A network protection and network technology, applied in the field of shortening network protection time, can solve problems such as shortening topology change detection time, and achieve the effect of shortening protection switching time, topology change detection time, and small changes

Inactive Publication Date: 2007-06-13
诺基亚西门子通信系统技术(北京)有限公司
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Problems solved by technology

Although the rapid generation number protocol proposes a way to shorten the convergence time of the network, it does not make any improvement in shortening the topology change detection time

Method used

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  • Method for shortening network protection time and apparatus
  • Method for shortening network protection time and apparatus

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Embodiment Construction

[0023] The traditional open system interconnection reference model (Open System Interface; OSI) is a 7-layer abstract reference model of a communication protocol, in which each layer performs a specific task. The purpose of this model is to enable various hardware to communicate with each other at the same level. The 7 layers are: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and Application Layer (Application Layer).

[0024] The Transmission Control Protocol / Internet Protocol (TCP / IP) adopted by the Internet (Internet) does not strictly follow the OSI model in fact, and it is generally recognized that TCP / IP has fewer layers than the 7-layer OSI model (3 to 5 layer), it is generally considered that the TCP / IP protocol is a 4-layer structure, as shown in Figure 1.

[0025] In the network structure of the TCP / IP protocol, some characteristics in the OSI model are ignored, and only the characteristics of some adjacent OSI l...

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Abstract

The network includes at least a network access layer, at least a network layer, at least a transmission layer, and at least an application layer. The network access layer includes at least a physical layer and at least a data link layer. The data link layer includes Ethernet data link layer, and lower data link layer of bearing the Ethernet data link layer. Using lower data link layer as trigger source detects topological change of spanning tree protocol. The invention shortens time for detecting topological change of spanning tree protocol from second order of magnitude to millisecond order of magnitude so as to shorten protection rearrangement time for the spanning tree protocol.

Description

technical field [0001] The present invention relates to a method and device for shortening network protection time, more specifically, a method and device for shortening Ethernet protection time in Ethernet. Background technique [0002] The early Ethernet (Ethernet) bridge (Bridge) used the media access control (Media Access Control; MAC) address to realize the data forwarding mechanism between different ports of the network equipment, and each port corresponds to an Ethernet network. segment, which is an Ethernet broadcast domain. By learning the MAC address table of each port, the bridge only forwards the communication between different ports. Since the bridge relies on the MAC address and port address table existing in the network to forward data, once it receives a data packet with an unknown destination address, it can only address it in the form of broadcast. A large amount of traffic is caused in the network, that is, a "broadcast storm", which leads to network par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/437H04L29/08H04J3/08
Inventor 刘辉
Owner 诺基亚西门子通信系统技术(北京)有限公司
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