Data transmission method, stacking equipment and stacking system

Abstract

The application discloses a data transmission method, stacking equipment and a stacking system, and is applied to an annular stacking system including a plurality of pieces of stacking equipment. Thedata transmission method includes the following steps: stacking equipment selects a stacking link from two stacking links from itself to other stacking equipment as an optimal link, and the other stacking link is a non-optimal link; when new data need forwarding, if current remaining bandwidth of the optimal link is sufficient, the stacking equipment utilizes the optimal link to forward data to other stacking equipment; and if the current remaining bandwidth of the optimal link is insufficient, the non-optimal ink is activated to forward data to other stacking equipment. According to the datatransmission method provided by the application, when the bandwidth of the optimal link is insufficient, the non-optimal link is used as a complement to forward data, thereby solving the problem of effective data transmission when the bandwidth is insufficient in an annular stacking system, reducing forwarding delay, and improving the bandwidth utilization rate of the stacking system.

Description

technical field [0001] The present invention relates to but not limited to data communication network technology, and in particular to a data transmission method, stacking equipment and a stacking system. Background technique [0002] With the rapid development of information technology and the rapid expansion of network scale, it is often difficult to accurately predict the future network scale in the current network planning. When the number of planned switch ports is not enough to meet the needs of network applications, it is best The number of ports of the switch can be increased without changing the original network planning topology, and at the same time, the burden of the network management is not increased. In order to meet the above requirements, the switch stacking technology came into being. The so-called switch stacking refers to connecting multiple stackable switches with cables through the stacking interface, so as to realize the expansion of the number of port...

AI Technical Summary

Problems solved by technology

In this case, if the devices at both ends of the inactive stack link need to communicate (for example, the incoming port of the message is on the A device, and the outgoing port is on the E device), the data needs to be transmitted from one end of the entire stacking system to the other. For forwarding (A-B-C-D-E) at one end, too many stacking devices pass through, which wastes the stacking link bandwidth, and there is also a forwarding delay problem that data cannot be forwarded in time when a link bandwidth is insufficient

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