Message forwarding method and device thereof

Abstract

An embodiment provided a message forwarding method and a device thereof, wherein the message forwarding method and the device thereof relate to the field of communication technology. The method and the device can save MAC address table capacity and ensures normal message forwarding by a router. The method comprises the steps of dividing every two ports on an SFU card to a port set; the SFU card can receive an Ether message to be forwarded, the message head of the Ether message to be forwarded comprises a target MAC address and port indicating information, and the SFU card can determine the target port set according to the target MAC address and the MAC address table; and selecting the target port by the SFU card according to the port indicating information for outputting the Ether messageto be forwarded. The message forwarding method and the device therefore are used for message forwarding.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a message forwarding method and device. Background technique [0002] With the rapid development of communication technology, the rapid increase of communication traffic urgently requires high-performance and high-capacity network equipment. Taking the routing device as an example, because the router needs to complete a large amount of data forwarding, the requirements for the forwarding capability of the router are getting higher and higher. [0003] Usually the router includes a switching matrix unit (full English name: Switch fabric unit, English abbreviation: SFU) card and multiple line processing unit (English full name: line processing unit, English abbreviation: LPU) cards, each SFU includes multiple The multiple ports correspond to and connect to multiple LPU cards one by one. When the router forwards the message, all the messages communicated between the ...

AI Technical Summary

Problems solved by technology

[0004] If the number of LPU cards in the router is n, the combination of all LPU cards (that is, the combination of all ports on the SFU card) is 2 n When n is greater than 15, for example, when n=16, there are 2 multicast MAC addresses 16 One possibility, because the capacity of the MAC address table stored in the MAC address table is limited by the hardware conditions of the switch chip in the SFU card, it can support up to 32K (thousand) multicast MAC addresses (that is, the switch chip can store up to 32,000 multicast MAC addresses). Correspondence between broadcast MAC address and port), 2 16 It is greater than 32K, so the capacity of the MAC address table stored in the SFU (that is, the multicast MAC address) cannot satisfy the combination of all LPU cards, so that the router may not be able to forward packets normally

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