Ethernet switching method and device incorporating circuit switching and packet switching

Abstract

The invention relates to a method for switching an Ethernet integrating circuit switching and packet switching, wherein an output slot of an output-port part of the Ethernet is divided according to unit transmission time of a fixed-length Ethernet frame and each output slot is flexibly appointed to participate the packet switching or a time division switching; after the input-port part of the Ethernet receives the fixed-length Ethernet frame, corresponding list items forwarded according to L2 / L3 of a switching unit is to switch the participate time division switching fixed-length Ethernet frame to the appointed slot of the appointed Ethernet port or to switch the participate packet switch ,the output-port part of the Ethernet port sends the fixed-length Ethernet frame according to serial number of the output slot under coordination of synchronization information. And a corresponding Ethernet switching device (500) consists of a switching unit (510), a forwarding table (520), at least two Ethernet ports (530) which are time-division multiplexed according to the unit transmission time of the fixed-length Entherent and a synchronization unit (540) used for keeping network synchronization.

Description

technical field [0001] The present invention relates to the network field, in particular to the Ethernet field; more specifically, the present invention relates to an Ethernet switching method and equipment for simultaneously realizing circuit switching and packet switching on the Ethernet by utilizing the existing Ethernet switching mechanism. Background technique [0002] According to different implementation mechanisms of data exchange, this patent application document divides data exchange services in the existing network field into two categories: time-division services and burst services. [0003] Time-division services refer to data services that require constant rate transmission and have relatively small end-to-end transmission delay and jitter. Moreover, a link needs to be established before the transmission of the time-division service, and the allocated link is exclusively occupied during the transmission. Traditionally, one or more of the TDM (Time Division Mul...

AI Technical Summary

Problems solved by technology

But, the shortcoming of existing TDM exchange is: owing to generally exchange with byte or a part of byte as time slot unit, the rate of TDM interface is lower; Need to borrow some kind of encapsulation format for encapsulation / decapsulation

[0023] In the above-mentioned EoS, Ethernet uses SDH / SONET network point-to-point channel for data transmission, which requires EoS encapsulation / decapsulation, and the bandwidth utilization rate is low

In addition, Ethernet packet switching, which is good at burst services, and SDH / SONET circuit switching, which is good at time-division services, are independent switching functional units. Unable to make full use of the bandwidth multiplexing characteristics of burst services, and cannot flexibly set each virtual container (Virtual Container, VC) in SDH / SONET to carry time division services and / or Ethernet burst services

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