Method and system for realizing proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception

A technology of ARP request and function, applied in the direction of transmission system, digital transmission system, electrical components, etc., can solve the problems of incommunicability, equipment failure to detect target IP reachability, etc., and achieve the effect of ensuring intercommunication

Active Publication Date: 2012-07-04
北京神州数码云科信息技术有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The defect of proxy ARP is that the device does not detect the reachability of the target IP and directly sends an ARP response to the requesting end. If there is a mapping relationship between the IP of the t...

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
  • Method and system for realizing proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception
  • Method and system for realizing proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception
  • Method and system for realizing proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The main idea of ​​the technical solution of the present invention is that the aggregation layer switch confirms whether the target host of the received ARP request message exists by collecting the binding information obtained by all the access layer switches of the downlink through DHCP snooping, thereby ensuring that the request Intercommunication between the terminal and the target terminal.

[0029] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0030] figure 1 It is a schematic flowchart of a method for implementing a proxy ARP function based on DHCP snooping provided by a specific embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0031] In step S101, the access layer switch enables the DHCP snooping function, the aggregation layer switch enables the proxy ARP function, and configures the IP address o...

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 invention discloses a method and a system for realizing a proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception. The method comprises the following steps that: a DHCP interception function is started up in an access layer switch, the proxy ARP function is started up in an aggregation layer switch, and the IP (Internet Protocol) address of the aggregation layer switch is configured in the access layer switch; the access layer switch intercepts a DHCP requesting process of a client-side, creates and stores binding information, and uploads the binding information to the aggregation layer switch; the aggregation layer switch stores the binding information into a binding information table; and the client-side sends an ARP requesting message to the aggregation layer switch, and the aggregation layer switch queries the binding information table, and sends an ARP response message to the client-side when the binding information table contains the destination IP address of the ARP requesting message. With the adoption of the technical scheme provided by the invention, the accessibility in the detection of the destination IP address by using proxy ARP equipment can be achieved, so that the communication between a requesting terminal and a destination terminal is ensured.

Description

technical field [0001] The invention relates to the field of computer data communication, in particular to a method and system for realizing proxy ARP function based on DHCP snooping. Background technique [0002] Dynamic Host Configuration Protocol (DHCP) is a LAN network protocol, using UDP protocol to work, mainly for two purposes: to automatically assign IP addresses to users for internal networks or network service providers to internal network administrators as A means of centrally managing all computers. [0003] The DHCP snooping (SNOOPING) function refers to the process that the switch monitors the DHCP client to obtain an IP address through the DHCP protocol. It prevents DHCP attacks and privately sets up DHCP servers by setting trusted ports and untrusted ports. DHCP messages received from trusted ports can be forwarded without verification. A typical setup is to connect trusted ports to a DHCP server or DHCP relay agent. When an untrusted port is connected to...

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): H04L12/26H04L29/06
Inventor 梁小冰
Owner 北京神州数码云科信息技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap