A kind of pcie switching system, device and switching method

Abstract

Disclosed are a PCIE switching system, an apparatus and a switching method. The system comprises: a plurality of the PCIE, switched to cell switching converter bridges (PECB), and a plurality of cell switching modules, each PECB of the plurality of PECB being in communication connection with each cell switching module of the plurality of cell switching modules; a first PECB of the plurality of PECB, used for receiving transaction layer packet packets, converting the transaction layer packet packets into cells, and sending the cells to at least one cell switching module of the plurality of cell switching modules; and the at least one cell switching module of the plurality of cell switching modules, used for receiving the cells sent from the first PECB, and forwarding the cells to a second PECB according to the ID number, which is contained in the cell, of the second PECB in the plurality of PECB. According to the present invention, it is possible to improve the reliability of the PCIE switching system, and solve the problem of bandwidth bottleneck between switches.

Description

technical field [0001] The present invention relates to the communication field, in particular to a PCIE switching system, device and switching method. Background technique [0002] PCI Express (Peripheral Component Interconnect Express, external component fast interconnection bus, hereinafter referred to as PCIE) protocol, its transport layer is based on TLP (Transaction Layer Packet, transaction layer package) message for data exchange, using point-to-point communication mode, from RC ( Root Complex (root node) to EP (End Point, leaf node) is a tree network structure, RC can be directly connected to EP or connected to EP by connecting one or more switches (Switch), please refer to figure 1 . In the tree structure, there is only one path between any RC and EP. When the path fails, the RC and EP at both ends of the path cannot exchange data, resulting in poor system reliability. [0003] In addition, if there are many EPs connected to the PCI Express switch, the bandwidth ...

AI Technical Summary

Problems solved by technology

In the tree structure, there is only one path between any RC and EP. When the path fails, the RC and EP at both ends of the path cannot exchange data, resulting in poor system reliability.

[0003] In addition, if there are many EPs connected to the PCI Express switch, the bandwidth that each EP can occupy is limited by the total bandwidth of the switch.

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