Method and device for dynamically detecting forward capability

Abstract

The invention discloses a method and a device for realizing the transmitting ability dynamical detection. In the invention, through detecting memory status identification state of memory spaces corresponding to the side of a CPU, current treatment ability of the CPU can be detected, thereby the transmitting ability of the CPU can be acquired. The outgoing interface CPU transmitting ability is noticed to each corresponding ingress interface, and the outgoing interface CPU transmitting ability is used by ingress interfaces to determine message flow being sent to the outgoing interface from the ingress interfaces, thereby realizing effectively the flow control among plates, ensuring that the sum of the message flow of all corresponding ingress interfaces does not go beyond the CPU transmitting ability of the outgoing interface, and providing the guarantee for preventing the file bag from being lost at the outgoing interface and avoiding the waste of the exchange network flow. Furthermore, while the memory status identification of the used state at the side of the CPU is less than a certain number, ingress interfaces can be noticed to increase the transmitting message flow to prevent the waste of the transmitting ability of the Cpu of the outgoing interface.

Description

technical field [0001] The invention relates to flow control technology in data transmission, in particular to a method for realizing dynamic detection of forwarding capability and a device for realizing dynamic detection of forwarding capability. Background technique [0002] An existing distributed routing system based on switching network technology includes multiple routing devices, and each routing device is connected to other routing devices through a switching network. [0003] Among them, each routing device can be used as the incoming interface of the distributed routing system, receiving messages from outside the system, and transmitting them to other routing devices as outgoing interfaces through the switching network in the system, and then the routing device as the outgoing interface Forward the message outside the system. [0004] FIG. 1 is an exemplary structural diagram of an existing distributed routing system. As shown in Figure 1, the system includes thr...

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Problems solved by technology

[0015] It can be seen that in the existing distributed routing system based on switching network technology, since the CPU forwarding capability of the outgoing interface board cannot be known, it cannot be guaranteed that the sum of the message traffic of all corresponding incoming interfaces will not exceed (or will not exceed for a long time) ) the CPU forwarding capability of the outbound interface, it is impossible to avoid packet loss at the outbound interface, resulting in waste of switching network traffic

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