Technical Analysis of Network Plug-in Flannel for Containers

doi:10.3969/j.issn.1673-5188.2017.04.006

ZTE Communications ›› 2017, Vol. 15 ›› Issue (4): 43-46.DOI: 10.3969/j.issn.1673-5188.2017.04.006

收稿日期:2017-07-26 出版日期:2017-10-25 发布日期:2019-12-02

Technical Analysis of Network Plug-in Flannel for Containers

YANG Yong, DONG Xiugang, DONG Zhenjiang

Nanjing R&D Center, ZTE Corporation, Nanjing 210012, China

Received:2017-07-26 Online:2017-10-25 Published:2019-12-02
About author:YANG Yong (yang.yong3@zte.com.cn) works with ZTE Corporation and focuses on ICT application R&D and software architecture technology research. His research interests include service platforms, capability opening, multimedia technologies, and cloud computing.|DONG Xiugang (dong.xiugang20@zte.com.cn) works with ZTE Corporation. His research interests include the Web and container technologies (including the micro service and container cluster management technologies) and their application, and natural language processing.|DONG Zhenjiang (dong.zhenjiang@zte.com.cn) works with ZTE Corporation. His research interests include security technologies , cloud computing and artificial intelligence.

摘要/Abstract

Abstract:

The development of cloud computing has made container technology a hot research issue in recent years. The container technology provides a basic support for micro service architecture, while container networking plays an important role in application of the container technology. In this paper, we study the technical implementation of the Flannel module, a network plug-in for Docker containers, including its functions, implementation principle, utilization, and performance. The performance of Flannel in different modes is further tested and analyzed in real application scenarios.

Key words: container technology, Docker, network plug-in, Flannel

. [J]. ZTE Communications, 2017, 15(4): 43-46.

YANG Yong, DONG Xiugang, DONG Zhenjiang. Technical Analysis of Network Plug-in Flannel for Containers[J]. ZTE Communications, 2017, 15(4): 43-46.

图/表 6

Figure 1. Implementation principle of flannel network.

Figure 2. A json file in UDP mode for sending packets.

Figure 3. Wireshark analysis for UDP mode.

Figure 4. Wireshark analysis for VXLAN mode.

Figure 5. Wireshark analysis for host-GW mode.

Table 1 Performance comparision of direct data transmission between two hosts with UDP/VXLAN/host-GW-based transmission through Flannel.

Mode	Rate (M/s)	Description
Direct transmission between two hosts	94.3	There is a normal performance loss in direct transmission between two hosts.
UDP	92.7	There is greater performance loss.
VXLAN	91.2	There is greater performance loss.
Host-GW	94.3	The performance is approximate to that of direct transmission between two hosts.

参考文献 12

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