Distributed packet switching system and distributed packet switching method of expanded switching bandwidth

Abstract

The invention discloses a distributed packet switching system and a distributed packet switching method of expanded switching bandwidth. A packet switching chip divides hardware ports thereof into at least two groups and respectively provides data packet switching support for each group of the hardware ports, wherein, each group of the hardware ports provides one hardware port for various wire clip boards respectively for connection; the wire clip boards distribute flow rate of the wire clip boards to different hardware port groups for data packet switching by selecting routes based on trafficflow; and the wire clip boards control flow rate based on the hardware port groups respectively. The distributed packet switching system and the distributed packet switching method of expanded switching bandwidth can help effectively expand switching capacity among the plates based on the existing packet switching chip hardware, and have the advantages of simple and practical operation and lowercost.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a distributed packet switching system for expanding switching bandwidth and a distributed packet switching method. Background technique [0002] In order to meet the rapidly increasing bandwidth requirements of the network, the structure of the middle layer routing and switching equipment has undergone fundamental changes, gradually transitioning from the traditional bus-based and central processor architecture to the distributed architecture, so that data can be improved through the switching fabric (switch fabric). Communication speed; Among them, the distributed packet switching structure with IP data packets as the scheduling unit is widely used in networks based on Ethernet technology. [0003] figure 1 A structural block diagram of a distributed packet switching system is shown; the distributed packet switching system includes a plurality of line card boards #1, #2...#N a...

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Problems solved by technology

[0005] It can be said that compared with the traditional bus-central processing unit architecture, the distributed packet switching system in the prior art can achieve higher data throughput and bandwidth utilization; however, because each line card board #1, #2... ...#N is connected to a port of the packet switching chip 300 through the Ethernet bus, so its interface bandwidth is fixed; for example, for the packet switching chip 300 of the 10Gbps port, it can provide receiving and Send each 10Gbps bandwidth; if line card board #1, line card board #2 and line card board #N perform packet exchange, because line card board #N is limited by port bandwidth: line card board #1 and line card board #2 simultaneously The traffic sent to line card #N cannot exceed 10Gbps; conversely, the sum of the traffic sent to line card #1 and line card #2 by line card #N cannot exceed 10Gbps;

[0006] Obviously, the inter-board switching capability of the existing distributed packet switching system is limited by the ports of the packet switching chip, and it is difficult for network equipment manufacturers to meet customer requirements by upgrading the hardware ports of the packet switching chip at any time; therefore, How to achieve higher inter-board switching capability based on the existing packet switching chip hardware platform has become a problem that those skilled in the art are working hard to solve

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