Router exchange structure for supporting uniform exchange and service quality guarantee method

Abstract

An exchange structure of route supporting uniform exchange is prepared as connecting input port formed by input buffer area and dispatcher to output port through exchange kernel, setting buffer area at each cross point of said kernel, corresponding one input buffer area to one type of stream, sending cell of stream in input buffer area to said kernel by dispatcher and buffer-storing cell of specific stream in buffer area at cross point, enabling to store four cells in each buffer area at cross point, multiplexing cell in buffer area at corresponding cross point to be a stream and outputting it by dispatcher on output port.

Description

technical field [0001] The present invention relates to a core device router for network interconnection, in particular to a router switching structure supporting uniform switching. Background technique [0002] With the increasing bandwidth requirements of the Internet and the rapid development of optical fiber transmission technology, routers have become the bottleneck of network development. As the core component of the router architecture, the switching fabric plays a key role in improving the switching capacity of the router and ensuring the quality of service. [0003] The switching structure of a router usually has an input port, an output port, and a switching core. During the switching process of a router, cells arriving from multiple input ports may compete for the same output port at the same time. In order to avoid this situation, it is necessary to Cells perform enqueue management. There are mainly two existing queuing strategies: (1) output queuing (Output Qu...

AI Technical Summary

Problems solved by technology

With the increase of wire speed and delay, the demand for the capacity of the intersection buffer also increases sharply, which brings great difficulties to hardware implementation.

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