Management method and equipment of MAC (Media Access Control) table entry

Abstract

The invention discloses a management method and equipment of an MAC (Media Access Control) table entry. The method comprises the steps that a second MAC address corresponding to an IP (Internet Protocol) multicast address when querier equipment determines that a first MAC address conflicts; the querier equipment transmits an MAC confliction correction message to two-layer access equipment; the two-layer access equipment maintains a mapping relationship between the IP multicast address and the second MAC address; the querier equipment transmits a specific group query message to a multicast receiver; the multicast receiver re-transmits a report message; and after receiving the report message, the two-layer access equipment records correspondence among the IP multicast address, the second MAC address and a receiving port of the report message in the MAC table entry by using the mapping relationship and deletes correspondence among the IP multicast address, the first MAC address and the receiving port of the report message from the MAC table entry. According to the method and the equipment, when the MAC address is found to have confliction, the querier equipment corrects the MAC address having the confliction, so that multicast data using the same MAC address can be forwarded precisely in a network.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and equipment for managing MAC entries. Background technique [0002] IP multicast, also known as IP multicast, means that multicast data is generated by a multicast source and sent to one or more multicast receivers through various network devices (such as routers) in the network. IP multicast neither designates clear multicast receivers nor distributes multicast data to all hosts in the network. The multicast source does not care about the location of the multicast receiver, as long as the multicast data is sent to the multicast destination address, the rest of the work is handed over to each network device in the network to complete the multicast data. Data is sent to all multicast receivers. In order to realize the above functions, each network device needs to collect the on-demand information of the multicast receivers, and use the on-demand informat...

AI Technical Summary

Problems solved by technology

Based on this, when the IP multicast address of the multicast data ordered by the multicast receiver is different, but the MAC address is the same, each network device will find that the MAC address conflicts after collecting the IP multicast address and MAC address. The network device cannot use the IP multicast address and MAC address of the on-demand multicast data to establish a correct distribution path, resulting in the inability to accurately forward the multicast data

Images