NFV资源池规划与部署方案

doi:10.11959/j.issn.1000-0801.2018200

Abstract

Abstract:

Network function virtualization is the direction of traditional telecommunication network evolution.The telecom network architecture in the future will be based on DC and resource pool.After test and trail,the telecommunication operators will begin NFV commercial deployment soon.An in-depth analysis of the network architecture,network planning and resource division of the NFV resource pool was given and the NFV resource pool planning scheme was discussed,which provided reference and suggestions for the construction of resource pool.

Key words: NFV resource pool, telecommunication cloud, network architecture, resource pool planning

CLC Number:

TN915.81

Lihua WU,Lei SHEN. NFV resource pool planning and deploying scheme[J]. Telecommunications Science, 2018, 34(6): 99-106.

Figures/Tables 9

References 6

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	NFV电信云	IT云
承载应用	通信类网元、业务平台，VNF之间需要组网，接口较多	IT支撑系统、互联网业务平台，IT云各应用之间相对独立
硬件配置需求	网络配置和故障管理要求较高，如网卡配置10~100 Gbit/s	网络配置和故障管理要求不高，如网卡配置1~10 Gbit/s
虚拟层要求	采用物理核绑定、巨页内存等功能打开；CPU、内存超分功能关闭；转发面使用DPDK、SR-IOV等转发加速功能	满足大部分应用的通用性要求
可靠性	99.999%	99.99%
管理平台规范化	ETSI NFV规范	无
管理平台范围	云资源管理+NFV业务生命周期管理	只负责云资源管理

网元分类	网元举例	集中化主要评估因素	集中化难度
信令处理网元	CSCF等	主要考虑用户分布	低
与用户数据相关网元	业务平台、HSS	用户数据和省内特色业务迁移；BOSS开通流程调整和改造	中等
网关类网元	MGCF/关口局、梦网网关等	与外部客户、其他运营商的连接较多，割接难度较大	中等
与无线接入相关的网元	MME	传输网改造支持PTN跨省难度较大；无线调整引起链路调整较复杂	较大

划分维度	划分原则
安全域维度	根据安全隔离要求，对于有物理隔离要求的安全域，需要划分不同的HA，如DMZ和可信任域
节点用途维度	对于同属于信任域的NFVI管理、网元管理和VNF，也可以根据主机上部署的不同应用，划分HA实现物理隔离，如将MANO和EMS划分在管理HA，将VNF划分在业务HA
不同网络模式（OVS/EVS/SR-IOV）维度	不同网络模式（OVS/EVS/SR-IOV）虚拟层配置参数不同，需要分HA部署
硬件规格维度	硬件配置（CPU、内存、硬盘、网络）完全相同的服务器定义为一类HA，如用于控制面网元（如vCSCF、vVoLTE AS）的HA、用于转发面网元的HA

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NFV resource pool planning and deploying scheme

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