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

network system

A network system and network technology, applied in the field of network systems with redundant structures, can solve problems such as network system failures, and achieve the effects of improving fault resistance, simple structure, and improving redundancy

Active Publication Date: 2017-03-22
MITSUBISHI ELECTRIC CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, if a loop is formed in the network due to redundancy, when a broadcast frame is transmitted, the broadcast frame repeats the loop, and eventually the communication band is used up, causing the network system to fail

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
  • network system
  • network system
  • network system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] figure 1 It is a figure which shows the structural example of the network system of Embodiment 1. Such as figure 1 As shown, the network system of this embodiment includes a trunk network 100 and a sub-network 200 connected to the trunk network 100 at two places. The trunk network 100 includes switching devices 1 and 2 . Subnetwork 200 includes switching devices 3 - 5 . This subnetwork 200 is a linear network in which each switching device is arranged linearly (also referred to as a chain). The switch devices 1 to 5 are Ethernet (registered trademark) switches. In addition, the switching devices constituting the trunk network 100 are not limited to two. Three or more switch devices may constitute the trunk network 100 . Likewise, the number of switch devices constituting the subnetwork 200 is not limited to three.

[0029] The switch devices 3 and 5 positioned at both ends of the linear network comprise physical ports as endpoints of the linear network, the physi...

Embodiment approach 2

[0044] Figure 4 It is a figure which shows the structural example of the network system of Embodiment 2. In the network system of this embodiment, the network system described in Embodiment 1 (see figure 1 ) of the trunk network 100 is replaced by a trunk network 101. In this embodiment, only the parts different from Embodiment 1 will be described.

[0045] The trunk network 101 adds the switching device 10 to the trunk network 100 included in the network system according to the first embodiment. The switching device 10 is connected to the switching device 1 and the switching device 2, and the switching devices 1, 2, and 10 of the trunk network 101 form a loop. These switch devices 1, 2, and 10 correspond to the Ethernet ring protocol, and even if one switch device constituting the trunk network 101 fails, transmission of the trunk network other than the failed switch can be maintained.

[0046] One of the switch devices 1 and 2 disconnects when a packet of a specific log...

Embodiment approach 3

[0049] Figure 5 It is a figure which shows the structural example of the network system of Embodiment 3. In the network system of this embodiment, the network system described in Embodiment 1 (see figure 1 ) trunk network 100 is replaced by trunk network 100a. In this embodiment, only the parts different from Embodiment 1 will be described.

[0050] In the trunk network 100a, the switch devices 1 and 2 of the trunk network 100 included in the network system according to the first embodiment are replaced with the switch devices 1a and 2a. The connection relationship between the switching devices 1 a and 2 a is the same as that of the switching devices 1 and 2 in the first embodiment. In addition, the connection relationship between the main network 100a and the sub-network 200 is the same as the connection relationship between the main network 100 and the sub-network 200 in the first embodiment.

[0051] In the network system of this embodiment, the switching devices 1a an...

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

The network system of the present invention includes: a trunk network formed by combining a plurality of switch devices; The trunk network is connected, and among the physical ports of the switch device constituting the trunk network, one of the two physical ports connected to the subnet, that is, the first physical port, cuts off a packet of a specific logical port number arriving from a specific direction, While allowing other packets to pass, the second physical port, which is the other of the two physical ports, passes a packet of a specific logical port number arriving from a specific direction, and blocks other packets.

Description

technical field [0001] The present invention relates to a network system of redundant structure. Background technique [0002] In order to improve the availability of the network, the redundancy of the network is generally carried out. Here, redundancy refers to additionally securing network devices and network lines and making them stand by as a backup system. In the event of a failure of a network device or network line in operation, it can continue to operate without causing a network failure by switching to a standby system. Redundant network systems are widely used. [0003] In the case of making the network redundant in this way, although availability can be improved, it is necessary to appropriately perform redundancy. That is, if a loop is formed in the network due to redundancy, when a broadcast frame is transmitted, the broadcast frame repeats the loop, and eventually the communication band is used up, causing the network system to fail. This phenomenon is call...

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 Patents(China)
IPC IPC(8): H04L12/42H04L45/18
CPCH04L12/42H04L12/462H04L45/18H04L43/0817H04L43/10H04L41/0654
Inventor 重枝哲也
Owner MITSUBISHI ELECTRIC CORP
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com