Method for sending address analytic protocol request message into specific object in local area network

A technology with a specific target and a local area network, which is applied in the field of dynamic scheduling of the access of online hosts to devices in the local area network.

Inactive Publication Date: 2004-10-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause all of these hosts to switch to this gateway
Therefore, the conventional method of broadcasting ARP packets cannot solve the problem of scheduling online hosts well.

Method used

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  • Method for sending address analytic protocol request message into specific object in local area network
  • Method for sending address analytic protocol request message into specific object in local area network
  • Method for sending address analytic protocol request message into specific object in local area network

Examples

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Embodiment Construction

[0046] refer to Figure 2 ~ Figure 4 An example of one embodiment of the present invention is described in detail.

[0047] exist figure 2 In the example shown, the gateway is used as an example of the service device in the local area network for illustration. Each host in the LAN is configured with the same gateway address, that is, the virtual IP address: 10.1.1.3, and the forwarding of data packets is completed through two gateways (gateway 1 and gateway 2).

[0048] Assume that gateway 1 is the active gateway and gateway 2 is the backup gateway. The active gateway receives all packets whose destination MAC address is virtual MAC address A: 00.00.00.00.00.03, and backup gateway 2 is responsible for receiving and processing all packets whose destination MAC address is virtual MAC address A: MAC address B: message of 00.00.00.00.00.04; when host 2 wants to send a data message to the WAN, it must first send an ARP request to the gateway, which is a broadcast message,...

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Abstract

The invention provides a method for sending single-cast or multicast ARP application message to special target in local area network and a method for using the former method to dispatch on-line computer to access the device in local area network, the devices in the local area network has the same virtual IP address, the method includes: it sets the target MAC address packaged by Ethernet of the application message with MAC address of the known devices, and sends the message. By using the method, it can adjust the access of on-line computer to device in local area network dynamically, thus achieves the aim of adjusting network burden share dynamically.

Description

field of invention [0001] The present invention relates to network communication technology, in particular to a method for unicasting or multicasting an ARP (Address Resolution Protocol) request message to a specific target in a local area network, and using the unicast or multicast method of the ARP request message to an online host A method for dynamically scheduling access to devices in a local area network. Background technique [0002] In the network communication technology based on TCP / IP (Transmission Control Protocol and Internet Protocol), the main purpose of ARP is to implement address resolution, that is, to obtain the correspondence between IP addresses and MAC (Media Access Control) addresses. For the format of the ARP request message, please refer to the IETF RFC826 protocol. figure 1 Shows the general format of ARP request packets. For example: [0003] Ethernet transmission layer (Ethernet transmission layer): [0004] 48.bit: destination MAC address ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/16H04L12/24H04L12/26H04L12/28H04Q3/00H04Q3/545
Inventor 阎长江
Owner HUAWEI TECH CO LTD
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