Unlock instant, AI-driven research and patent intelligence for your innovation.

Communication apparatus and network system

A technology of communication device and connection port, which is applied in the direction of transmission system, network interconnection, digital transmission system, etc.

Inactive Publication Date: 2015-03-04
MITSUBISHI ELECTRIC CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that communication between networks with different VLAN settings cannot be performed even if it is physically connected to one communication device.

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
  • Communication apparatus and network system
  • Communication apparatus and network system
  • Communication apparatus and network system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] figure 1 It is a diagram showing a configuration example of a network system including a communication device according to the present embodiment. figure 1 The physical connections of the various devices are shown. In the network system, communication devices 1 and 2 are connected by a trunk link (Trunk Link) 3, and the communication device 1 is connected to an information management device 4 connected to a VLAN#0 set port. In addition, a VVVF (Variable Voltage Variable Frequency) 11 connected to the VLAN#1 setting port, an air conditioner 12, and a guiding device 21 connected to the VLAN#2 setting port are connected to the communication device 1. ,twenty two. Also, VVVF 13 connected to the VLAN#1 setting port, the air conditioner 14 , and guidance devices 23 and 24 connected to the VLAN#2 setting port are connected to the communication device 2 . The communication devices 1 and 2 include a plurality of connection ports, and can perform a plurality of (here, three) V...

Embodiment approach 2

[0029] In Embodiment 1, the case where the information management apparatus directly performs data communication with devices connected to each VLAN has been described. In this embodiment, the information management device performs data communication with the control device connected to each VLAN. Portions different from Embodiment 1 will be described.

[0030] image 3 It is a diagram showing a configuration example of a network system including a communication device according to the present embodiment. image 3 The physical connections of the various devices are shown. In the network system, the communication devices 5 and 6 are connected by a trunk link 7, and the communication device 5 is connected to an information management device 8 connected to a VLAN#10 set port. In addition, the communication device 5 is connected to the destination control device 31 and the destination display device 32 connected to the VLAN#3 setting port, the destination control device 41 and ...

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

Provided is a communication apparatus for performing communications between train cars. The communication apparatus comprises two or more connection ports, and each of a plurality of VLAN numbers assigned to the respective connection ports can be used to establish two or more VLANs. When having received a particular type of packet that cancels the VLAN establishment, the communication apparatus regards two or more established VLANs as the same network for the particular type of packet and then transfers the packet to a device, which is a desired destination established in one of the VLANs, independently of the VLAN establishment.

Description

technical field [0001] The present invention relates to a communication device and network system for communication using VLAN. Background technique [0002] Conventionally, communication has been performed using a VLAN (Virtual Local Area Network: Virtual Local Area Network). In a system that shares a network, VLAN can be used by dividing the network. For example, in a system where multiple communication devices (hubs) are connected, VLANs are set for the connection ports of each communication device (hub), so that although one network is physically configured, it can be logically configured as multiple networks. to use. Such techniques are disclosed in Patent Documents 1 to 3 below. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2007-5892 [0006] Patent Document 2: Japanese Patent Laid-Open No. 2003-198588 [0007] Patent Document 3: Japanese Patent Laid-Open No. 2004-72160 Contents of the inventi...

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
IPC IPC(8): H04L12/46H04L45/243
CPCH04L12/4641H04L12/465H04L12/4675H04L45/245H04L49/70
Inventor 重枝哲也本田新吾
Owner MITSUBISHI ELECTRIC CORP