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Automatic updating method for IP address of terminal and Ethernet access device

An IP address and automatic update technology, applied in transmission systems, electrical components, etc., can solve the problems of cumbersome network access settings, and achieve the effect of improving user experience.

Active Publication Date: 2015-05-13
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for automatically updating the terminal IP address and an Ethernet access device, so as to solve the problem of cumbersome network access settings caused by manually updating the IP address when the terminal authentication status changes in the traditional technology. question

Method used

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  • Automatic updating method for IP address of terminal and Ethernet access device
  • Automatic updating method for IP address of terminal and Ethernet access device
  • Automatic updating method for IP address of terminal and Ethernet access device

Examples

Experimental program
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Embodiment

[0054] The detailed process of automatically updating the terminal IP address according to the present invention with the switching of the 802.1X authentication state will be described in detail below with an example.

[0055] Phase one:

[0056] Such as figure 2 As shown, the port directly connected between DHCP Server A and the access switch is assigned to the GUEST-VLAN. When the user terminal is not authenticated or the authentication fails, it belongs to the GUEST-VLAN. Assume that the address of DHCP Server A is 192.168.1.1, and the GUEST-VLAN is 2. Therefore, when a user terminal initiates a DHCP request, only DHCP Server A can receive the DHCP Discover message sent by the terminal. DHCP Server A responds to the request and assigns the address 192.168.1.2 to the terminal. At this time, the user can access the corresponding network resources. The access device enables the DHCP Snooping function, monitors the entire DHCP process, intercepts and saves necessary informat...

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Abstract

The invention belongs to the field of network communication, and aims at solving the problem that when a VLAN, to which a client belongs, changes, the client cannot update the IP address automatically and thereby cannot visit the network. According to an automatic updating method for the IP address of a terminal and an Ethernet access device provided by the invention, 802.1X is combined with DHCP Snooping, and a DHCP Snooping module is extended. The DHCP Snooping monitors the whole process of DHCP, and stores basic information of a DHCP server, a DHCP client and Translation ID and the like. When a 802.1X authentication module detects that the authentication state of the terminal changes and the VLAN to which the terminal belongs is switched, the DHCP Snooping module is informed, the DHCP Snooping simulates that the DHCP server sends a DHCP ACK message with lease of zero to the DHCP client according to the stored information, to allow the client to actively release the current IP address and initiating a new DHCP request. The automatic updating method is applicable to Ethernet switches.

Description

technical field [0001] The invention belongs to the terminal IP automatic acquisition technology in the field of network communication, and in particular relates to a terminal IP address automatic update method and an Ethernet access device. Background technique [0002] The 802.1X protocol is widely used in Ethernet as a common access control mechanism for LAN ports, and it mainly solves the problems of authentication and security in Ethernet. The 802.1x protocol is an access control and authentication protocol based on Client / Server. It can restrict unauthorized users / devices from accessing LAN / WLAN through the access port. The DHCP (Dynamic Host Configuration Protocol, namely Dynamic Host Configuration Protocol) protocol provides addresses and configuration parameters for hosts in the network. DHCP is based on the Client / Server working mode. The DHCP server assigns IP addresses to hosts and provides host configuration parameters. Dynamic host configuration protocol mon...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06
CPCH04L61/5014
Inventor 王宗磊
Owner MAIPU COMM TECH CO LTD
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