Multi-way parallel MAC address learning and address lookup device and method

Abstract

The invention discloses a multi-way parallel MAC address learning and address lookup device and method. The device comprises a receiving dispatching module, multi-way parallel lookup-table modules, a learning result polling module, a synchronous update table cache, an update module, an aging deleting module and an address selection module. The receiving dispatching module adds time identifiers to data subgroups sequentially and sends the subgroups to the multi-way parallel lookup-table modules. The modules carry out address learning and address lookup in parallel. The learning result polling module successively receives various ways of learning results and sends the learning results to the synchronous update table cache; the update module reads synchronous update table items and updates multi-way address tables at the same time; when the update module does not update the address tables, the address selection module selects connection with the aging deleting module; and the aging deleting module deletes the aged address tables. According to the method and the device, the switching capacity and working efficiency of a switch are improved; and the method and the device are applied to a high speed large capacity switch network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a device and method for MAC address learning and address search, which can be applied to high-speed and large-capacity Ethernet switching networks. Background technique [0002] With the increasing development and wide application of communication technology, people's requirements for data transmission rate are getting higher and higher. As an important network device, the performance of the switch directly affects the network speed of the network where it is located. Ethernet technology is easy to use, low in price, and its bandwidth can be continuously improved. It has been widely used no matter as a service or as a network structure. [0003] The main research content of Ethernet technology includes physical layer and MAC sublayer. The learning and searching function of MAC address is the basis for developing network interconnection devices such as bridges ...

AI Technical Summary

Problems solved by technology

[0012] 1) During the learning process of the MAC address, it is necessary to look up the address table to determine whether the address has been learned, while traditional switches use the strategy of learning the MAC address first and then searching. This serial workflow not only limits the speed of MAC address lookup, It also limits the efficiency of the switch

[0013] 2) With the introduction of 10G, 40G and 100G Ethernet standards, large-capacity and high-speed Ethernet switching technology has become a research hotspot, but the single-channel MAC address learning and MAC address lookup methods used in traditional Ethernet switching have greatly limited large-scale Development of Capacity High Speed ​​Ethernet Switching Technology

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