Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Self-adaptive Ethernet single-loop network algorithm

An Ethernet, self-adaptive technology, applied in the field of network communication, can solve the problems of long self-healing time that cannot meet industrial requirements, redundant backup, long self-healing time, etc.

Inactive Publication Date: 2014-03-26
WUHAN MAIWEI SHIDA SOFTWARE
View PDF14 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The switch is the core network device for building the Ethernet. Generally, the switches are directly connected by a linear connection, but the linear connection has a disadvantage: when a line failure in the linear connection will cause the entire network communication to be interrupted
Switches connected with a ring topology generally use a private ring network protocol and a standard RSTP protocol. The standard RSTP protocol has redundant backup and link switching functions, but the link switching time is between several seconds to tens of seconds, and the self-healing time Too long to meet industrial requirements
The private ring network protocol requires the administrator to set the root switch and ring ports, which is inconvenient to use
Switch ports can cause network storms if operators mistakenly connect
[0004] In order to overcome the shortcoming that the traditional RSTP protocol self-healing time is too long, the present invention proposes an adaptive Ethernet single-ring network algorithm. This algorithm supports ring topology, has redundant backup and link switching functions, and can automatically select the ring-forming switch. At the same time, select a switch in the ring network as the root switch automatically or according to the settings of the administrator

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-adaptive Ethernet single-loop network algorithm
  • Self-adaptive Ethernet single-loop network algorithm
  • Self-adaptive Ethernet single-loop network algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The algorithm of the present invention is mainly executed on the switch, and appropriate switch chips need to be selected, such as 6095F, 6061F and other chips of Marvell, and BCM53242 and BCM53262 of Broadcom. The chip must have BPDU management frames, and a specific network driver needs to be written to process BPDU management frames. BPDU management frames are different from ordinary data frames, and the network driver can process these two different data frames at the same time. Optimize the network to increase the priority of BPDU data frames, open the QOS function of the switch, and set its priority to be the highest. At the same time, in order to ensure that the CPU has enough time and resources to process BPDU frames, you can configure the switch to limit the speed at which unknown multicast and broadcast packets flood into the CPU port.

[0038] When the switch is initialized, all ports are in the blocking state and send a link up message. If the message sent ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A self-adaptive Ethernet single-loop network algorithm is operated on a dual-layer interchanger. According to the algorithm, a special BPDU (Bridge Protocol Data Unit) report is designed, and a linkup message in the BPDU report performs forwarding and comparing in a loop network to determine two ports of a root interchanger and the loop network. When the interchanger is started or is connected with the port, the linkup message is sent to judge the looped end port and the root interchanger; the own linkup message is received, and two looped ports are calculated; whether the interchanger is the root interchanger or not is judged, if yes, the root interchanger sends a finishing message and a notification message, and if not, the notification message is sent. The message is forwarded after the notification message is received, and the linkup message is sent to determine the own loop network port; the connected port is set to be in the forwarding state after the finishing message is received, a mac (media access control) address table is emptied, and the message is forwarded. The interchanger regularly scans the continuous change, a linkdown message is sent if a looped port is offline, the message is processed according to the interchanger and a responding message is sent.

Description

technical field [0001] The invention is an adaptive Ethernet single-ring network algorithm and belongs to the field of network communication. Specifically, it relates to a software algorithm running on an Ethernet switch. Background technique [0002] It is more and more common to use Ethernet as the transmission network in the modern industrial communication environment. Industrial communication has high requirements on the stability and reliability of data transmission. The industrial communication network built on the basis of Ethernet switches must make certain improvements to meet this requirement. kind of request. The invention designs an adaptive Ethernet single-ring network algorithm to ensure the stability and reliability of communication. The self-adaptive Ethernet single-ring network algorithm works on the data link layer, mainly runs on the switch, supports the single-ring topology between the switches, uses the specific functions of the switching chip and the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/933
Inventor 周厚明崔磊
Owner WUHAN MAIWEI SHIDA SOFTWARE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products