Message forwarding method based on forwarding table of medium access control and system

Abstract

The invention discloses a message forwarding method based on a forwarding table of medium access control, comprising the following steps of: carrying out MAC network level division to all nodes in the network; setting MAC network segments of all MAC network levels, MAC mask codes of all MAC network segments and virtual MAC addresses of all nodes according to the division to the MAC network levels; converging into the MAC forwarding table according to the set MAC network segments, the set MAC mask codes and the set virtual MAC addresses; and after the nodes receive the message, forwarding the message by inquiring the converged MAC forwarding table. The invention also discloses a message forwarding system based on the MAC forwarding table correspondingly, comprising a network division unit, a set unit, a converging unit and a message forwarding unit. The invention converges the existing plurality of entries into one entry, thus saving network resource; in addition, as the entries are reduced, the times for inquiring the entries are correspondingly reduced when a switch forwards the message, thus improving the forwarding efficiency of the message.

Description

Technical field [0001] The invention relates to a message forwarding technology, in particular to a message forwarding method and system based on a media access control (MAC, Media Access Control) forwarding table. Background technique [0002] In traditional networks, there are two ways for Ethernet to establish a MAC forwarding table: the first is to establish a dynamic MAC forwarding table by flooding; the second is to manually configure a static MAC forwarding table. Among them, the dynamic MAC forwarding table established by flooding is generally used in a local area network. If it is applied to a large-scale carrier-grade network, it will easily lead to a broadcast storm of the network, which does not meet the requirements of a carrier-grade network. This is because the sites connected to the local area network are very small, that is, the small business traffic of an office, but the carrier-grade Ethernet belongs to the metropolitan area Ethernet, which is located at the c...

AI Technical Summary

Problems solved by technology

Among them, the dynamic MAC forwarding table established by flooding is generally used in the local area network. If it is applied to a large-scale carrier-class network, it will easily cause a broadcast storm on the network, which does not meet the requirements of the carrier-class network.

This is because the site connected to the LAN is very small, that is, the small business traffic of an office, but the carrier-class Ethernet belongs to the metropolitan area Ethernet, which is located at the aggregation layer of the telecom operator and aggregates from several cities to hundreds of For the huge business volume in the city, if the MAC forwarding table is established by flooding in the carrier Ethernet, it will broadcast and forward the huge unknown unicast traffic to all the carrier Ethernet switches in the city, thus causing the operator's telecom network Shock, causing a network storm

[0003] Manually configured static MAC forwarding tables are used in carrier-class networks, such as PBT carrier-class networks, although they will not cause broadcast storms in the network, but because they use manual establishment of static MAC forwarding tables and close the MAC self-learning function, therefore, In the case of a large-scale carrier-class network, the number of MAC forwarding tables that need to be stored will be very large. In this way, when the message is forwarded, the network's search efficiency for the MAC forwarding table will be greatly reduced, and the packet Forwarding efficiency

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