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Method and device for updating address resolution information

A technology for updating addresses and IP addresses, applied in the field of network communication, can solve problems such as network paralysis and affect network performance, and achieve the effect of avoiding broadcast, improving network performance, and reducing broadcast traffic.

Active Publication Date: 2014-10-08
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a Layer 2 network of this scale, the propagation of broadcast packets will cause a large amount of traffic, affecting network performance. In severe cases, a broadcast storm may be formed and the network will be paralyzed.

Method used

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  • Method and device for updating address resolution information
  • Method and device for updating address resolution information
  • Method and device for updating address resolution information

Examples

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Embodiment Construction

[0029] A layer 2 Ethernet network structure such as figure 1 As shown, the controller 10 is respectively connected to the forwarding device 31, the forwarding device 32, and the forwarding device 33 through the forwarding device 20, and the host 41 accesses the second layer through the forwarding device 31, the host 42 through the forwarding device 32, and the host 43 through the forwarding device 33. The internet. The controller 10 controls each forwarding device, including adding, deleting, and modifying forwarding entries, querying statistical information, and forwarding messages through the forwarding devices; each forwarding device forwards messages according to the forwarding entries of the machine, and sends The controller 10 reports the packets that do not match the forwarding entry, its own status, and other content that needs to be reported to the controller 10 .

[0030] Among them, the controller 10 and each forwarding device can be a network node with correspondi...

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Abstract

The invention provides a method for updating address resolution information. The method is applied to a controller for controlling forwarding equipment in a network. The method comprises the steps of receiving host computer address updating information, and recording a corresponding relationship between an updated IP (Internet protocol) address and an MAC (media access control) address of a host computer; deleting a forwarding entry comprising the recorded IP address and a forwarding entry comprising the recorded MAC address by using instruction forwarding equipment; after a forwarding message of which a destination address is the position of the host computer and which is uploaded by the forwarding equipment is received, transmitting a message carrying the recorded corresponding relationship between the IP address and the MAC address of the host computer to a source address of the uploaded forwarding message. According to the technical scheme, ARP (address resolution protocol) caches of other host computers can be timely updated when the address of the host computers is changed, and the broadcasting of a free ARP message can be avoided, so that the burst broadcasting traffic is reduced, and the performance of the network is improved.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and device for updating address resolution information. Background technique [0002] In recent years, the scale of the data center area and the demand for business processing have increased, and the application of cluster technology has become more and more. The servers in the cluster need to be in a layer-2 reachable network. At the same time, on the basis of the convenience and flexibility of business deployment brought by the application of virtualization technology, the migration of virtual machines has also become a problem that needs to be considered. In order to ensure the continuity of the services carried by the virtual machine, the IP address of the virtual machine before and after migration usually remains the same. In this case, the migration of the virtual machine also needs to be in the same Layer 2 reachable network. These two tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/757H04L29/12
Inventor 林涛
Owner NEW H3C TECH CO LTD
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