Method, device and system for learning MAC (Media Access Control) address

A MAC address and address technology, applied in the field of MAC address learning, can solve the problems of large MAC table specifications, insufficient processing capacity, and limited network scale, and achieve the effects of improving processing capacity, reducing specifications, and reducing delay

Active Publication Date: 2011-08-03
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] The embodiment of the present invention provides a method, device and system for learning a MAC address to solve the problems in the prior art that the MAC

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  • Method, device and system for learning MAC (Media Access Control) address
  • Method, device and system for learning MAC (Media Access Control) address
  • Method, device and system for learning MAC (Media Access Control) address

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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] The embodiment of the present invention provides a MAC address learning method, which includes: receiving a free address resolution protocol ARP message from a local virtual host VM, and updating the local ARP table and the local media access control MAC table according to the free ARP message, And terminate the gratuitous ARP message; receive an address relationship learning message; when the address relationship learning message ...

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Abstract

The embodiment of the invention discloses a method, device and system for learning an MAC (Media Access Control) address. The method comprises the steps of: receiving a free address resolution protocol (ARP) message from a local virtual host machine (VM), updating a local ARP table and a local media access control (MAC) table according to the free ARP, and ending the free ARP message; receiving an address relational learning message; and when the address relational address learning message is an ARP request message from a network side, inquiring a local ARP table according to the ARP request message, when the local ARP table has a matching table entry, updating the local ARP table and the local MAC table, and ending the ARP request message. By adopting the technical scheme provided by the embodiment of the invention, load of network equipment can be lightened, processing capacity of the network equipment is improved, delay of the message in a transmission process is reduced, the specification of the MAC table in a data center network is lowered, an oversized network is configured, i.e. a large two-layer network becomes possible.

Description

technical field [0001] The present invention relates to the field of network communication, in particular to a method, device and system for learning MAC addresses. Background technique [0002] Such as figure 1 As shown, it is a schematic diagram of a layer 2 network in a data center. The root switch is usually an aggregation switch, and the leaf switch is usually an access switch. The data center has a large number of servers, and each server can virtualize multiple virtual hosts (Virtual Machine, VM ). In the IP (Internet Protocol, Internet Protocol) network environment, each host is assigned a 32-bit IP address. The IP address is a logical address that identifies the host in the Internet range. In order to allow the message to be transmitted on the physical network, It is necessary to know the physical address and MAC (MediaAccess Control, Media Access Control) address of the other party’s destination host, which requires a set of services at the network layer to conve...

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Application Information

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IPC IPC(8): H04L12/56H04L29/12H04L45/74
Inventor 张益波尹国理
Owner HUAWEI TECH CO LTD
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