Low latency Ethernet repeater and low latency Ethernet forwarding method based on T structure

Abstract

The invention provides a low latency Ethernet repeater and a low latency Ethernet forwarding method based on a T structure, which are used for solving the wiring redundancy problem in the existing switch and the problems that the time delay is larger and the time delay is uncertain in the existing forwarding method. The repeater comprises a port in T-type distribution and a processing unit; the processing unit comprises a left port frame processing module, a right port frame processing module, a user port frame processing module, an address learning and search module, a special protocol processing module and a user port adapter module. A forwarding method comprises the following steps: judging a link state; caching a data frame; identifying and classifying frames; reconstructing a link; classifying PAUSE frames; configuring the repeater; learning and searching an address; building an output queue; building the PAUSE frames; and outputting the PAUSE frames to the port. The low latency Ethernet repeater and the low latency Ethernet forwarding method based on the T structure provided by the invention can fully reduce the user access wiring redundancy, reduce the forwarding delay and guarantee the forwarding delay certainty, and can detect and reconstruct a network link timely during a network link failure, so that the low latency Ethernet repeater and the low latency Ethernet forwarding method can be used for building a high speed real-time access network.

Description

technical field [0001] The invention belongs to the technical field of communications, and relates to a network forwarding device and a forwarding method, in particular to a T-shaped structure-based low-delay Ethernet forwarding device and method, which can be used to build a high-speed real-time access network. Background technique [0002] Ethernet is a common network connection method in a local area network. Users generally connect to switching devices in the network, such as switches or routers, and then connect to other networks through the switching devices. Ethernet switches are designed to meet the needs of data exchange when multiple users access the network at the same time. Traditional Ethernet switches are usually multi-port switches. When multiple users access the switch, a switch-centered star network is adopted. It needs to be connected to the user interface of the switch through an independent cable. In some occasions that require simple wiring, such as airp...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the defects of traditional Ethernet switching technology, and propose a low-delay Ethernet forwarding device and method based on T-shaped structure, which is used to solve the problems of wiring redundancy, long delay and Uncertain delay problem

Images