YD/T 4634-2023
NFV and SDN collaborative management and orchestration technical requirements for telecom cloud resource pool scenarios (English Version)

Standard No.

YD/T 4634-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 4634-2023

Introduction

Analysis of the core content of the standard

Technical Dimension	Traditional NFV Architecture	SDN Enhanced Architecture
Network Control Method	Distributed Control Plane	Centralized SDN Controller
Orchestration Object	VNF Lifecycle Management	VNF+Network Policy Collaborative Orchestration
Interface Extension	Or-Vi/Vi-Vnfm Basic Interface	Added 12 types of enhanced interfaces such as BGP/TAP/VPC

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Architecture Evolution Analysis

The standard has three core extensions based on the ETSI NFV MANO architecture:

1. Control plane reconstruction: Add a SDN controller module, and use the VIM plug-in to take over the Neutron component function
2. Interface enhancement: Extend the Or-Vi interface to support network policy transparent transmission, and add parameters such as Trunk subnet to the Vi-Vnfm interface
3. Template specification: Introduce ExtCP files to clearly define VNF external network requirements, and support TOSCA format NSD multi-DF design

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Key technology implementation

Network service instantiation process enhancement

Take the deployment of 5G user plane as an example:

1. NFVO parses the VXLAN network definition in NSD
2. Create vRouter and ECMP routing by enhancing the Or-Vi interface
3. Dynamically configure BFD detection parameters (detection time ≤ 50ms)
4. Deploy TAP Service on demand to achieve signaling collection

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Implementation suggestions

• Heterogeneous compatibility: It is recommended to use standardized ExtCP files to implement cross-vendor VNFD network requirements analysis
• Gray release: Support smooth transition between old and new versions through the NSD multi-DF feature
• Operation and maintenance optimization: Use the VNFLifecycleChangeNotification interface to achieve real-time synchronization of topology changes

YD/T 4634-2023 Referenced Document

• YD/T 3938-2021 Network Functions Virtualization Orchestrator (NFVO) Technical Requirements Overall Requirements

YD/T 4634-2023 history

• 2023 YD/T 4634-2023 NFV and SDN collaborative management and orchestration technical requirements for telecom cloud resource pool scenarios

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