Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of DCQCN data transmission system and transmission method based on SDN

A technology of a data transmission system and a transmission method, which is applied to the SDN-based DCQCN data transmission system and the field of transmission, can solve problems such as not considering CNP messages, aggravating congestion and deterioration, and achieve the effect of improving quality and improving time efficiency

Active Publication Date: 2022-06-07
PURPLE MOUNTAIN LAB
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The implementation of the DCQCN protocol does not consider the efficiency of the CNP message reaching the sender’s network card. If the CNP message encounters congestion during transmission, the sender’s network card will not be able to respond in a timely manner and reduce the speed, thus aggravating the degree of congestion in a short time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of DCQCN data transmission system and transmission method based on SDN
  • A kind of DCQCN data transmission system and transmission method based on SDN
  • A kind of DCQCN data transmission system and transmission method based on SDN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like figure 1 As shown, the SDN-based DCQCN data transmission system provided by the present invention includes several SDN controllers, host-side systems, and intelligent network cards; wherein,

[0038] The SDN controller is used to provide the NETCONF protocol service, and carries the sending and sending functions of the intelligent network card information through the NETCONF protocol;

[0039] The smart network card is used to collect data information, set VxLAN information, encapsulate VxLAN information, and send VxLAN information including CNP messages to source IP and destination IP;

[0040] The host-side system and the SDN controller establish a NETCONF link, obtain mapping information of the host-side and other smart network cards in the data center, and set the host-side smart network card information.

[0041] The main functions of the SDN controller are as follows:

[0042] (1) NETCONF protocol server function. As the NETCONF protocol server, the SDN co...

Embodiment 2

[0059] The business process of the SDN-based DCQCN data transmission system is mainly divided into two parts. The first part is the initial configuration part, that is, after the data center system equipment is powered on, it starts to collect all the smart network card information in the data center through SDN control and issue settings. Effective; the second part is that when the data center is actually running, when data congestion occurs, the DCQCN protocol takes effect, and the generated CNP packets are encapsulated by VxLAN and then transmitted through the management network and take effect in time.

[0060] like figure 2 As shown, based on the SDN-based DCQCN data transmission system in Embodiment 1, the data flow of the control plane of the system, that is, the key business flow of smart network card information reporting and delivery is as follows:

[0061] (1) After the system equipment is initially powered on, firstly, according to the configuration command on the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an SDN-based DCQCN data transmission system and transmission method. The data transmission system includes a plurality of SDN controllers, a host side system, and an intelligent network card; wherein, the SDN controller is used to provide NETCONF protocol services, and carry intelligent network card information through the NETCONF protocol. The function of uploading and sending; the smart network card is used to collect data information, set the VxLAN information, encapsulate the VxLAN information, and send the VxLAN information including the CNP message to the source IP and destination IP; the host-side system and the SDN controller establish NETCONF link to obtain the mapping information of the host side and other smart network cards in the data center, and set the smart network card information on the host side. The present invention proposes the idea of ​​separation of control and forwarding based on SDN to ensure that key control messages can be sent to the sender in time. Secondly, the control channel can also reduce the number of hops for CNP message forwarding, thereby further shortening the time for CNP messages from the sender to the sender. Receiver time, more timely response to speed reduction.

Description

technical field [0001] The invention belongs to the technical field of intelligent network cards, and in particular relates to an SDN-based DCQCN data transmission system and transmission method. Background technique [0002] The DC-QCN algorithm is based on the combination of Data Center TCP (DCTCP) and Quantized Notification Algorithm (QCN). The original algorithm was presented in the SIGCOMM'15 paper "Congestion control for large scale RDMA deployments". The DC-QCN algorithm relies on ECN marking on the switch side. ECN is a common feature of commercial data center switches, and two bits in the Differentiated Services field in the IP header of the data packet are used to indicate congestion. Once congestion occurs on the switch side, these two bits are set to "11" (CE). The ECN-marked packet is propagated to the receiver's NIC, which creates a CNP packet and sends it to the sender of the ECN-marked packet. The CNP packet includes the information of the marked QP. Whe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/02H04L12/46H04L67/141H04L69/16H04L69/22H04L9/40H04L47/10
CPCH04L12/02H04L12/4641H04L67/141H04L69/16H04L69/22H04L63/12H04L47/10Y02D30/50
Inventor 朱华兴汪硕黄韬
Owner PURPLE MOUNTAIN LAB