Stacking system, PE device and message forwarding method

Abstract

The present application provides a stacking system, a PE device, and a message forwarding method. The PE device in the system includes at least two switching chips that are not interconnected with each other. Each switching chip includes a first port and a second port. There is at least one service aggregation port, and the service aggregation port includes at least two second ports that are not on the same switching chip. Each switching chip records the identification of the member port of the service aggregation port to which the second port on the switching chip belongs, so that when receiving a message sent to any forwarding domain by the member port belonging to the service aggregation port, Ports other than the service aggregation port determine the forwarding egress of the message. In this way, on the basis of realizing no interconnection of switching chips, it is possible to avoid the flooding of messages caused by the fact that the switching chip does not know whether there is a second port belonging to the same service aggregation port as the second port of this chip on other switching chips. The service aggregation port where the source port is located is forwarded.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular, to a stacking system, a PE device, and a message forwarding method. Background technique [0002] The stacking system based on the 802.1BR protocol logically includes: CB (Controlling Bridge, control bridge) equipment and PE (Port Extender, port extension) equipment, wherein, the CB equipment is used to connect and manage the PE equipment. The PE device operates as a remote service board of the CB device, which is equivalent to a service board inserted into a designated slot of the CB device. [0003] Currently, a plurality of interconnected switching chips are usually set in one PE device to increase port density. However, the interconnection of the switch chips will inevitably occupy some ports on the switch chip, resulting in reduced bandwidth. However, if the switch chips are not interconnected with each other, for the downlink port belonging to any aggre...

AI Technical Summary

Problems solved by technology

However, the interconnection of switch chips will inevitably occupy some ports on the switch chip, resulting in reduced bandwidth

However, if the switch chips are not interconnected with each other, for the downlink port belonging to any aggregation port on the switch chip, the switch chip cannot know whether there is also a downlink port belonging to the aggregation port on other switch chips in the PE device. As a result, when the switch chip receives a message sent from the member port of the aggregation port on another switch chip to any forwarding domain, it will send the message from the member port of the aggregation port on the switch chip, that is, switch The chip cannot filter out the source port of the message when multicasting or broadcasting the message

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