Link state self consulting method

Abstract

A link status self negotiation method is used for data transmission link state negotiation between transmitting end and receiving end. It contains receiving end receiving data according to right sequence through querying serial number in cell head; through cell head link gateway bit and line error bit to transfer link status; increasing link status list at receiving end and transmitting end; in link fault occurrence and link recover process through receiving end and transmitting end transmitting / receiving state to control data receiving and transmitting, to complete link self negotiation process. In link status self negotiation process, said invention also complete link self negotiation process through querying and configuring parallel-series / series-parallel convert on off state list. The present invention raises negotiation efficiency and systematical reliability.

Description

technical field

[0001] The present invention relates to a link self-negotiation method (mechanism), in particular to an extensible link self-negotiation method which transmits the link state by adding an overhead in a cell. Background technique

[0002] With the increasing bandwidth requirements of the network, the interface of the switching network often requires a bandwidth of up to 10G or even 40G. However, there is no such fast serial bus at present. The industry's practice is to combine several 2.5G or 3.125G Serdes ( SERializer / DESerializer, parallel serial / serial parallel converter) bundled to provide a 10G or 40G port, in order to provide a port with a service bandwidth of 10G, eight 2.5G Serdes need to be bundled to support, the bandwidth of 40G is Need 32 2.5G Serdes to support. For a 10G interface, the current general practice is to bundle eight 2.5G Serdes to provide it.

[0003] like figure 1 as shown, figure 1 The left side of the figure represents the traf...

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