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Data transmitting method and apparatus based on virtual LAN

A data sending method and a technology of a data sending device, which are applied in the direction of data exchange network, data exchange through path configuration, network interconnection, etc., and can solve problems such as ineffectiveness and inability to meet the safety network

Inactive Publication Date: 2007-01-31
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In this way, even if the switch realizes the division of VLANs, it does not play a corresponding role in the security network isolation and controlled security protection forwarding between various departments in the enterprise, and obviously cannot meet the needs of users' security networks.

Method used

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  • Data transmitting method and apparatus based on virtual LAN
  • Data transmitting method and apparatus based on virtual LAN
  • Data transmitting method and apparatus based on virtual LAN

Examples

Experimental program
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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] The present invention is based on the forwarding of virtual local area network VLAN data on the three-layer switch, aiming at the isolation and controlled forwarding of VLANs in the enterprise and realizing the forwarding method of VLAN data. The flow of the present invention will be described in detail below.

[0041]When configuring VLANs in the present invention, it is necessary to configure the security level identification (safety factor) of each VLAN and the security strategy corresponding to the security level identification. Each VLAN has its own security factor, which is set according to the security requirements of clients in the VLAN. For example, it can be defined in the range of 1-100. The VLAN with a security factor of 1 has the lowest security level, and the VLAN with a security factor of 100 has a security level. Highest. Since the safety fac...

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Abstract

The invention discloses a VLAN-based data transmitting method and device. And the method comprises: it sets safety grade IDs and safety policies for VLANs and VLAN port receives data message and determines whether to transmit in the same VLAN: if yes, transmitting the data message in the same VLAN and otherwise comparing safety grade ID of a destination VLAN with that of the message-sending VLAN: if the safety grade of the latter is higher or equal to that of the former, directly transmitting the data message and otherwise calling safety policy of the destination VLAN to make safe filtration on the data message. And it implements inter-VLAN safety data communication and assures data safety of high-grade VLAN client machines.

Description

technical field [0001] The invention relates to a method and device for safely sending network data, in particular to a method and device for sending data based on a virtual local area network. Background technique [0002] The development of economy and society requires communication and resource sharing among users, and a group of computers need to be connected into a network, which implies the risk of information leakage, and also contains great vulnerability and complexity. With the expansion of the scope of network applications, the problem of information leakage has become increasingly serious. Therefore, the security of computer networks has become more and more important. In the computer network, in order to solve the problem of lack of IP addresses and the needs of information sharing, the local area network is the most widely used one. It adopts the broadcast method, and all the information packets transmitted on the local area network can be intercepted in the sam...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L12/28
Inventor 王松波李颖和施鸿殊
Owner NEW H3C TECH CO LTD
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