| 虚拟网络功能迁移研究综述 |
| Research on virtual network function (VNF) migration |
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| DOI： |
| 中文关键词: 虚拟网络功能；迁移；负载均衡 |
| 英文关键词:virtual network function(VNF); migration; load balancing |
| 基金项目:国家科技重大专项（2017ZX03001008）、国家自然科学基金（61372125）和江苏省高校自然科学研究重大项目（16KJA510005）资助项目 |
| 作者 | 单位 | | 朱晓荣 | 南京邮电大学 通信与信息工程学院，江苏南京210003 | | 王一忠 | 南京邮电大学 通信与信息工程学院，江苏南京210003 |
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| 中文摘要: |
| SDN和NFV技术在解决传统网络中存在的问题的同时也引入新的问题——网络流量负载失衡，因此引入VNF迁移。VNF迁移的优势在于可以实现故障快速恢复、负载均衡以及弹性应用；但VNF迁移与传统的虚拟机迁移存在着很大的区别，因此迁移过程中需要考虑更多的问题。文中针对VNF迁移，介绍了其产生背景、基本概念、分类标准以及迁移时需要考虑的问题，并给出目前业内VNF迁移的实现方法。最后对VNF迁移带来的消极影响，如服务降级等，给出可能的解决方案——VNF迁移和VNF复制协同进行网络负载均衡，这还需要进一步的研究。 |
| 英文摘要: |
| SDN and NFV may bring many new problems while solving the problems in the traditional networks, such as unbalanced traffic load and so on. Virtual network functions(VNF )migration is introduced to solve these problems. The benefits of VNF migration include rapid failure recovery, load balancing and resilient applications. However, there are many differences between VNF migration and traditional virtual machine migration, so more elements need to be considered during the migration. This paper presents the background of VNF migration, basic concepts, classification criteria, and the issues considered during the migration of VNF. A method for realizing the VNF migration in the industry is proposed. Finally, a possible solution to the negative impact of VNF migration is given. The network load balancing can be accomplished through VNF migration and VNF replication without degrading the service, thus it needs further study. |
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